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# Copyright 2020 The HuggingFace Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
from collections.abc import Mapping
import numpy as np
import pyarrow as pa
from .. import config
from ..utils.py_utils import map_nested
from .formatting import TensorFormatter
class NumpyFormatter(TensorFormatter[Mapping, np.ndarray, Mapping]):
def __init__(self, features=None, **np_array_kwargs):
super().__init__(features=features)
self.np_array_kwargs = np_array_kwargs
def _consolidate(self, column):
if isinstance(column, list):
if column and all(
isinstance(x, np.ndarray) and x.shape == column[0].shape and x.dtype == column[0].dtype for x in column
):
return np.stack(column)
else:
# don't use np.array(column, dtype=object)
# since it fails in certain cases
# see https://stackoverflow.com/q/51005699
out = np.empty(len(column), dtype=object)
out[:] = column
return out
return column
def _tensorize(self, value):
if isinstance(value, (str, bytes, type(None))):
return value
elif isinstance(value, (np.character, np.ndarray)) and np.issubdtype(value.dtype, np.character):
return value
elif isinstance(value, np.number):
return value
default_dtype = {}
if isinstance(value, np.ndarray) and np.issubdtype(value.dtype, np.integer):
default_dtype = {"dtype": np.int64}
elif isinstance(value, np.ndarray) and np.issubdtype(value.dtype, np.floating):
default_dtype = {"dtype": np.float32}
elif config.PIL_AVAILABLE and "PIL" in sys.modules:
import PIL.Image
if isinstance(value, PIL.Image.Image):
return np.asarray(value, **self.np_array_kwargs)
return np.asarray(value, **{**default_dtype, **self.np_array_kwargs})
def _recursive_tensorize(self, data_struct):
# support for torch, tf, jax etc.
if config.TORCH_AVAILABLE and "torch" in sys.modules:
import torch
if isinstance(data_struct, torch.Tensor):
return self._tensorize(data_struct.detach().cpu().numpy()[()])
if hasattr(data_struct, "__array__") and not isinstance(data_struct, (np.ndarray, np.character, np.number)):
data_struct = data_struct.__array__()
# support for nested types like struct of list of struct
if isinstance(data_struct, np.ndarray):
if data_struct.dtype == object:
return self._consolidate([self.recursive_tensorize(substruct) for substruct in data_struct])
if isinstance(data_struct, (list, tuple)):
return self._consolidate([self.recursive_tensorize(substruct) for substruct in data_struct])
return self._tensorize(data_struct)
def recursive_tensorize(self, data_struct: dict):
return map_nested(self._recursive_tensorize, data_struct, map_list=False)
def format_row(self, pa_table: pa.Table) -> Mapping:
row = self.numpy_arrow_extractor().extract_row(pa_table)
row = self.python_features_decoder.decode_row(row)
return self.recursive_tensorize(row)
def format_column(self, pa_table: pa.Table) -> np.ndarray:
column = self.numpy_arrow_extractor().extract_column(pa_table)
column = self.python_features_decoder.decode_column(column, pa_table.column_names[0])
column = self.recursive_tensorize(column)
column = self._consolidate(column)
return column
def format_batch(self, pa_table: pa.Table) -> Mapping:
batch = self.numpy_arrow_extractor().extract_batch(pa_table)
batch = self.python_features_decoder.decode_batch(batch)
batch = self.recursive_tensorize(batch)
for column_name in batch:
batch[column_name] = self._consolidate(batch[column_name])
return batch
|
datasets/src/datasets/formatting/np_formatter.py/0
|
{
"file_path": "datasets/src/datasets/formatting/np_formatter.py",
"repo_id": "datasets",
"token_count": 1871
}
| 80
|
import copy
import itertools
import sys
from collections import Counter
from copy import deepcopy
from dataclasses import dataclass
from functools import partial
from itertools import cycle, islice
from typing import TYPE_CHECKING, Any, Callable, Dict, Iterable, Iterator, List, Optional, Tuple, Union
import fsspec.asyn
import numpy as np
import pyarrow as pa
from . import config
from .arrow_dataset import Dataset, DatasetInfoMixin
from .features import Features
from .features.features import FeatureType, _align_features, _check_if_features_can_be_aligned, cast_to_python_objects
from .formatting import PythonFormatter, TensorFormatter, get_format_type_from_alias, get_formatter
from .info import DatasetInfo
from .splits import NamedSplit, Split
from .table import cast_table_to_features, read_schema_from_file, table_cast
from .utils.logging import get_logger
from .utils.py_utils import Literal
from .utils.sharding import _merge_gen_kwargs, _number_of_shards_in_gen_kwargs, _shuffle_gen_kwargs, _split_gen_kwargs
if TYPE_CHECKING:
import torch
logger = get_logger(__name__)
Key = Union[int, str]
def identity_func(x):
return x
def _rename_columns_fn(example: Dict, column_mapping: Dict[str, str]):
if any(col not in example for col in column_mapping):
raise ValueError(
f"Error when renaming {list(column_mapping)} to {list(column_mapping.values())}: columns {set(column_mapping) - set(example)} are not in the dataset."
)
if any(col in example for col in column_mapping.values()):
raise ValueError(
f"Error when renaming {list(column_mapping)} to {list(column_mapping.values())}: columns {set(example) - set(column_mapping.values())} are already in the dataset."
)
return {
new_column_name: example[original_column_name]
for original_column_name, new_column_name in column_mapping.items()
}
def add_column_fn(example: Dict, idx: int, name: str, column: List[Dict]):
if name in example:
raise ValueError(f"Error when adding {name}: column {name} is already in the dataset.")
return {name: column[idx]}
def _infer_features_from_batch(batch: Dict[str, list], try_features: Optional[Features] = None) -> Features:
pa_table = pa.Table.from_pydict(batch)
if try_features is not None:
try:
pa_table = table_cast(pa_table, pa.schema(try_features.type))
except (TypeError, pa.ArrowInvalid, pa.ArrowNotImplementedError):
pass
return Features.from_arrow_schema(pa_table.schema)
def _examples_to_batch(examples: List[Dict[str, Any]]) -> Dict[str, list]:
# we order the columns by order of appearance
# to do so, we use a dict as an ordered set
cols = {col: None for example in examples for col in example}
# when an example is missing a column, we set the value to None with .get()
arrays = [[example.get(col) for example in examples] for col in cols]
return dict(zip(cols, arrays))
def _batch_to_examples(batch: Dict[str, list]) -> Iterator[Dict[str, Any]]:
"""Convert a batch (dict of examples) to examples list"""
n_examples = len(batch[next(iter(batch))])
for i in range(n_examples):
yield {col: array[i] for col, array in batch.items()}
def _convert_to_arrow(
iterable: Iterable[Tuple[Key, dict]],
batch_size: int,
drop_last_batch: bool = False,
) -> Iterator[Tuple[Key, pa.Table]]:
"""Convert and group examples in Arrow tables of size `batch_size`.
Args:
iterable (`Iterable[Tuple[Key, dict]]`):
An examples iterable containing tuples (example_key, example) of type (int/str, dict)
batch_size (`Optional[int]`):
Size of each sub-table to yield. If None or <= 0, yields the full table.
drop_last_batch (`bool`, defaults to `False`):
Drop the last batch if it is smaller than `batch_size`.
"""
if batch_size is None or batch_size <= 0:
yield (
"all",
pa.Table.from_pylist(cast_to_python_objects([example for _, example in iterable], only_1d_for_numpy=True)),
)
return
iterator = iter(iterable)
for key, example in iterator:
iterator_batch = islice(iterator, batch_size - 1)
key_examples_list = [(key, example)] + list(iterator_batch)
if len(key_examples_list) < batch_size and drop_last_batch:
return
keys, examples = zip(*key_examples_list)
new_key = "_".join(str(key) for key in keys)
yield new_key, pa.Table.from_pylist(cast_to_python_objects(examples, only_1d_for_numpy=True))
class _BaseExamplesIterable:
"""Base class for the examples iterable used by an IterableDataset"""
def __init__(self) -> None:
self._state_dict: Optional[Union[list, dict]] = None
def __iter__(self) -> Iterator[Tuple[Key, dict]]:
"""An examples iterable should yield tuples (example_key, example) of type (int/str, dict)"""
raise NotImplementedError(f"{type(self)} doesn't implement __iter__ yet")
@property
def iter_arrow(self) -> Optional[Callable[[], Iterator[Tuple[Key, pa.Table]]]]:
return None
def shuffle_data_sources(self, generator: np.random.Generator) -> "_BaseExamplesIterable":
"""
Either shuffle the shards/sources of the dataset, or propagate the shuffling to the underlying iterable.
If the order of the shards must stay fixed (when using .skip or .take for example), then this method returns self.
"""
raise NotImplementedError(f"{type(self)} doesn't implement shuffle_data_sources yet")
def shard_data_sources(self, worker_id: int, num_workers: int) -> "_BaseExamplesIterable":
"""Either keep only the requested shard, or propagate the request to the underlying iterable."""
raise NotImplementedError(f"{type(self)} doesn't implement shard_data_sources yet")
def split_shard_indices_by_worker(self, worker_id: int, num_workers: int) -> List[int]:
return list(range(worker_id, self.n_shards, num_workers))
@property
def n_shards(self) -> int:
raise NotImplementedError(f"{type(self)} doesn't implement n_shards yet")
def _init_state_dict(self) -> dict:
raise NotImplementedError(f"{type(self)} doesn't implement _init_state_dict yet")
def load_state_dict(self, state_dict: dict) -> dict:
def _inner_load_state_dict(state, new_state):
if new_state is not None and isinstance(state, dict):
for key in new_state:
state[key] = _inner_load_state_dict(state[key], new_state[key])
return state
elif new_state is not None and isinstance(state, list):
for i in range(len(state)):
state[i] = _inner_load_state_dict(state[i], new_state[i])
return state
return new_state
return _inner_load_state_dict(self._state_dict, state_dict)
def state_dict(self) -> dict:
if self._state_dict:
return copy.deepcopy(self._state_dict)
raise RuntimeError("State dict is not initialized, please call ex_iterable._init_state_dict() first.")
class ExamplesIterable(_BaseExamplesIterable):
def __init__(self, generate_examples_fn: Callable[..., Tuple[Key, dict]], kwargs: dict):
super().__init__()
self.generate_examples_fn = generate_examples_fn
self.kwargs = kwargs
def _init_state_dict(self) -> dict:
self._state_dict = {"shard_idx": 0, "shard_example_idx": 0}
return self._state_dict
def __iter__(self):
shard_idx_start = self._state_dict["shard_idx"] if self._state_dict else 0
for gen_kwags in islice(_split_gen_kwargs(self.kwargs, max_num_jobs=self.n_shards), shard_idx_start, None):
shard_example_idx_start = self._state_dict["shard_example_idx"] if self._state_dict else 0
for key_example in islice(self.generate_examples_fn(**gen_kwags), shard_example_idx_start, None):
if self._state_dict:
self._state_dict["shard_example_idx"] += 1
yield key_example
if self._state_dict:
self._state_dict["shard_idx"] += 1
self._state_dict["shard_example_idx"] = 0
def shuffle_data_sources(self, generator: np.random.Generator) -> "ExamplesIterable":
return ShuffledDataSourcesExamplesIterable(self.generate_examples_fn, self.kwargs, generator)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "ExamplesIterable":
"""Keep only the requested shard."""
gen_kwargs_list = _split_gen_kwargs(self.kwargs, max_num_jobs=self.n_shards)
shard_indices = self.split_shard_indices_by_worker(worker_id, num_workers)
requested_gen_kwargs = _merge_gen_kwargs([gen_kwargs_list[i] for i in shard_indices])
return ExamplesIterable(self.generate_examples_fn, requested_gen_kwargs)
@property
def n_shards(self) -> int:
return _number_of_shards_in_gen_kwargs(self.kwargs)
class ShuffledDataSourcesExamplesIterable(ExamplesIterable):
def __init__(
self, generate_examples_fn: Callable[..., Tuple[Key, dict]], kwargs: dict, generator: np.random.Generator
):
super().__init__(generate_examples_fn, kwargs)
self.generator = deepcopy(generator)
def _init_state_dict(self) -> dict:
self._state_dict = {"shard_idx": 0, "shard_example_idx": 0}
return self._state_dict
def __iter__(self):
"""Shuffle the kwargs order to shuffle shards"""
rng = deepcopy(self.generator)
kwargs_with_shuffled_shards = _shuffle_gen_kwargs(rng, self.kwargs)
shard_idx_start = self._state_dict["shard_idx"] if self._state_dict else 0
for gen_kwags in islice(
_split_gen_kwargs(kwargs_with_shuffled_shards, max_num_jobs=self.n_shards), shard_idx_start, None
):
shard_example_idx_start = self._state_dict["shard_example_idx"] if self._state_dict else 0
for key_example in islice(self.generate_examples_fn(**gen_kwags), shard_example_idx_start, None):
if self._state_dict:
self._state_dict["shard_example_idx"] += 1
yield key_example
if self._state_dict:
self._state_dict["shard_idx"] += 1
self._state_dict["shard_example_idx"] = 0
def shard_data_sources(self, worker_id: int, num_workers: int) -> "ExamplesIterable":
"""Keep only the requested shard."""
rng = deepcopy(self.generator)
kwargs_with_shuffled_shards = _shuffle_gen_kwargs(rng, self.kwargs)
return ExamplesIterable(self.generate_examples_fn, kwargs_with_shuffled_shards).shard_data_sources(
worker_id, num_workers
)
class ArrowExamplesIterable(_BaseExamplesIterable):
def __init__(self, generate_tables_fn: Callable[..., Tuple[Key, pa.Table]], kwargs: dict):
super().__init__()
self.generate_tables_fn = generate_tables_fn
self.kwargs = kwargs
@property
def iter_arrow(self):
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {"shard_idx": 0, "shard_example_idx": 0}
return self._state_dict
def __iter__(self):
formatter = PythonFormatter()
shard_idx_start = self._state_dict["shard_idx"] if self._state_dict else 0
for gen_kwags in islice(_split_gen_kwargs(self.kwargs, max_num_jobs=self.n_shards), shard_idx_start, None):
shard_example_idx_start = self._state_dict["shard_example_idx"] if self._state_dict else 0
shard_example_idx = 0
for key, pa_table in self.generate_tables_fn(**gen_kwags):
if shard_example_idx + len(pa_table) <= shard_example_idx_start:
shard_example_idx += len(pa_table)
continue
for pa_subtable in pa_table.to_reader(max_chunksize=config.ARROW_READER_BATCH_SIZE_IN_DATASET_ITER):
formatted_batch = formatter.format_batch(pa_subtable)
for example in _batch_to_examples(formatted_batch):
if shard_example_idx >= shard_example_idx_start:
if self._state_dict:
self._state_dict["shard_example_idx"] += 1
yield key, example
shard_example_idx += 1
if self._state_dict:
self._state_dict["shard_idx"] += 1
self._state_dict["shard_example_idx"] = 0
def _iter_arrow(self):
shard_idx_start = self._state_dict["shard_idx"] if self._state_dict else 0
for gen_kwags in islice(_split_gen_kwargs(self.kwargs, max_num_jobs=self.n_shards), shard_idx_start, None):
shard_example_idx_start = self._state_dict["shard_example_idx"] if self._state_dict else 0
shard_example_idx = 0
for key, pa_table in self.generate_tables_fn(**gen_kwags):
shard_example_idx += len(pa_table)
if shard_example_idx <= shard_example_idx_start:
continue
if self._state_dict:
self._state_dict["shard_example_idx"] += len(pa_table)
yield key, pa_table
if self._state_dict:
self._state_dict["shard_idx"] += 1
self._state_dict["shard_example_idx"] = 0
def shuffle_data_sources(self, generator: np.random.Generator) -> "ArrowExamplesIterable":
return ShuffledDataSourcesArrowExamplesIterable(self.generate_tables_fn, self.kwargs, generator)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "ArrowExamplesIterable":
"""Keep only the requested shard."""
gen_kwargs_list = _split_gen_kwargs(self.kwargs, max_num_jobs=self.n_shards)
shard_indices = self.split_shard_indices_by_worker(worker_id, num_workers)
requested_gen_kwargs = _merge_gen_kwargs([gen_kwargs_list[i] for i in shard_indices])
return ArrowExamplesIterable(self.generate_tables_fn, requested_gen_kwargs)
@property
def n_shards(self) -> int:
return _number_of_shards_in_gen_kwargs(self.kwargs)
class ShuffledDataSourcesArrowExamplesIterable(ArrowExamplesIterable):
def __init__(
self,
generate_tables_fn: Callable[..., Tuple[Key, pa.Table]],
kwargs: dict,
generator: np.random.Generator,
):
super().__init__(generate_tables_fn, kwargs)
self.generator = deepcopy(generator)
def _init_state_dict(self) -> dict:
self._state_dict = {"shard_idx": 0, "shard_example_idx": 0}
return self._state_dict
def __iter__(self):
"""Shuffle the kwargs order to shuffle shards"""
rng = deepcopy(self.generator)
kwargs_with_shuffled_shards = _shuffle_gen_kwargs(rng, self.kwargs)
formatter = PythonFormatter()
shard_idx_start = self._state_dict["shard_idx"] if self._state_dict else 0
for gen_kwags in islice(
_split_gen_kwargs(kwargs_with_shuffled_shards, max_num_jobs=self.n_shards), shard_idx_start, None
):
shard_example_idx_start = self._state_dict["shard_example_idx"] if self._state_dict else 0
shard_example_idx = 0
for key, pa_table in self.generate_tables_fn(**gen_kwags):
if shard_example_idx + len(pa_table) <= shard_example_idx_start:
shard_example_idx += len(pa_table)
continue
for pa_subtable in pa_table.to_reader(max_chunksize=config.ARROW_READER_BATCH_SIZE_IN_DATASET_ITER):
formatted_batch = formatter.format_batch(pa_subtable)
for example in _batch_to_examples(formatted_batch):
if shard_example_idx >= shard_example_idx_start:
if self._state_dict:
self._state_dict["shard_example_idx"] += 1
yield key, example
shard_example_idx += 1
if self._state_dict:
self._state_dict["shard_idx"] += 1
self._state_dict["shard_example_idx"] = 0
def _iter_arrow(self):
rng = deepcopy(self.generator)
kwargs_with_shuffled_shards = _shuffle_gen_kwargs(rng, self.kwargs)
shard_idx_start = self._state_dict["shard_idx"] if self._state_dict else 0
for gen_kwags in islice(
_split_gen_kwargs(kwargs_with_shuffled_shards, max_num_jobs=self.n_shards), shard_idx_start, None
):
shard_example_idx_start = self._state_dict["shard_example_idx"] if self._state_dict else 0
shard_example_idx = 0
for key, pa_table in self.generate_tables_fn(**gen_kwags):
shard_example_idx += len(pa_table)
if shard_example_idx <= shard_example_idx_start:
continue
if self._state_dict:
self._state_dict["shard_example_idx"] += len(pa_table)
yield key, pa_table
if self._state_dict:
self._state_dict["shard_idx"] += 1
self._state_dict["shard_example_idx"] = 0
def shard_data_sources(self, worker_id: int, num_workers: int) -> "ArrowExamplesIterable":
"""Keep only the requested shard."""
rng = deepcopy(self.generator)
kwargs_with_shuffled_shards = _shuffle_gen_kwargs(rng, self.kwargs)
return ArrowExamplesIterable(self.generate_tables_fn, kwargs_with_shuffled_shards).shard_data_sources(
worker_id, num_workers
)
class RebatchedArrowExamplesIterable(_BaseExamplesIterable):
def __init__(self, ex_iterable: _BaseExamplesIterable, batch_size: Optional[int], drop_last_batch: bool = False):
super().__init__()
self.ex_iterable = ex_iterable
self.batch_size = batch_size
self.drop_last_batch = drop_last_batch
@property
def iter_arrow(self):
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {
"ex_iterable": self.ex_iterable._init_state_dict(),
"previous_state": None,
"batch_idx": 0,
"num_chunks_since_previous_state": 0,
"cropped_chunk_length": 0,
}
return self._state_dict
def __iter__(self):
yield from self.ex_iterable
def _iter_arrow(self) -> Iterator[Tuple[Key, pa.Table]]:
"""Iterate over sub-tables of size `batch_size`."""
if self._state_dict and self._state_dict["previous_state"]:
self.ex_iterable.load_state_dict(self._state_dict["previous_state"])
if self.ex_iterable.iter_arrow:
iterator = self.ex_iterable.iter_arrow()
else:
iterator = _convert_to_arrow(self.ex_iterable, batch_size=1)
if self.batch_size is None or self.batch_size <= 0:
if self._state_dict and self._state_dict["batch_idx"] > 0:
return
all_pa_table = pa.concat_tables([pa_table for _, pa_table in iterator])
if self._state_dict:
self._state_dict["batch_idx"] = 1
yield "all", all_pa_table
return
keys_buffer = []
chunks_buffer = []
chunks_buffer_size = 0
num_chunks_to_skip = self._state_dict["num_chunks_since_previous_state"] if self._state_dict else 0
chunk_length_to_crop = self._state_dict["cropped_chunk_length"] if self._state_dict else 0
if self._state_dict:
previous_state = self.ex_iterable.state_dict()
self._state_dict["previous_state"] = previous_state
for key, pa_table in iterator:
for num_chunks_since_previous_state, chunk in enumerate(pa_table.to_reader(max_chunksize=self.batch_size)):
if num_chunks_to_skip > 1:
num_chunks_to_skip -= 1
continue
elif num_chunks_to_skip == 1 and chunk_length_to_crop == 0:
num_chunks_to_skip -= 1
continue
elif num_chunks_to_skip == 1 and chunk_length_to_crop > 0:
chunk = chunk.slice(chunk_length_to_crop, len(chunk) - chunk_length_to_crop)
num_chunks_to_skip = 0
chunk_length_to_crop = 0
if len(chunk) == 0:
continue
if chunks_buffer_size + len(chunk) < self.batch_size:
keys_buffer.append(key)
chunks_buffer.append(chunk)
chunks_buffer_size += len(chunk)
continue
elif chunks_buffer_size + len(chunk) == self.batch_size:
keys_buffer.append(key)
chunks_buffer.append(chunk)
new_key = "_".join(str(_key) for _key in keys_buffer)
if self._state_dict:
self._state_dict["batch_idx"] += 1
self._state_dict["num_chunks_since_previous_state"] += len(chunks_buffer)
self._state_dict["cropped_chunk_length"] = 0
yield new_key, pa.Table.from_batches(chunks_buffer)
keys_buffer = []
chunks_buffer = []
chunks_buffer_size = 0
if self._state_dict:
self._state_dict["previous_state"] = previous_state
self._state_dict["num_chunks_since_previous_state"] = num_chunks_since_previous_state + 1
else:
cropped_chunk_length = self.batch_size - chunks_buffer_size
keys_buffer.append(f"{key}[:{cropped_chunk_length}]")
chunks_buffer.append(chunk.slice(0, cropped_chunk_length))
new_key = "_".join(str(_key) for _key in keys_buffer)
if self._state_dict:
self._state_dict["batch_idx"] += 1
self._state_dict["num_chunks_since_previous_state"] += len(chunks_buffer)
self._state_dict["cropped_chunk_length"] = cropped_chunk_length
yield new_key, pa.Table.from_batches(chunks_buffer)
keys_buffer = [f"{key}[{cropped_chunk_length}:]"]
chunks_buffer = [chunk.slice(cropped_chunk_length, len(chunk) - cropped_chunk_length)]
chunks_buffer_size = len(chunk) - cropped_chunk_length
if self._state_dict:
self._state_dict["previous_state"] = previous_state
self._state_dict["num_chunks_since_previous_state"] = num_chunks_since_previous_state
if self._state_dict:
previous_state = self.ex_iterable.state_dict()
if not self.drop_last_batch and chunks_buffer:
new_key = "_".join(str(_key) for _key in keys_buffer)
if self._state_dict:
self._state_dict["previous_state"] = previous_state
self._state_dict["batch_idx"] += 1
self._state_dict["num_chunks_since_previous_state"] = 0
self._state_dict["cropped_chunk_length"] = 0
yield new_key, pa.Table.from_batches(chunks_buffer)
def shuffle_data_sources(self, generator: np.random.Generator) -> "RebatchedArrowExamplesIterable":
return RebatchedArrowExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator), self.batch_size, self.drop_last_batch
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "RebatchedArrowExamplesIterable":
return RebatchedArrowExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers), self.batch_size, self.drop_last_batch
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class SelectColumnsIterable(_BaseExamplesIterable):
def __init__(self, ex_iterable: _BaseExamplesIterable, column_names: List[str]):
super().__init__()
self.ex_iterable = ex_iterable
self.column_names = column_names
@property
def iter_arrow(self):
if self.ex_iterable.iter_arrow:
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = self.ex_iterable._init_state_dict()
return self._state_dict
def __iter__(self):
for idx, row in self.ex_iterable:
yield idx, {c: row[c] for c in self.column_names}
def _iter_arrow(self) -> Iterator[Tuple[Key, pa.Table]]:
for idx, pa_table in self.ex_iterable.iter_arrow():
if len(pa_table) > 0: # empty tables have no schema
yield idx, pa_table.select(self.column_names)
def shuffle_data_sources(self, generator: np.random.Generator) -> "SelectColumnsIterable":
return SelectColumnsIterable(self.ex_iterable.shuffle_data_sources(generator), self.column_names)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "SelectColumnsIterable":
return SelectColumnsIterable(self.ex_iterable.shard_data_sources(worker_id, num_workers), self.column_names)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class StepExamplesIterable(_BaseExamplesIterable):
def __init__(self, ex_iterable: _BaseExamplesIterable, step: int, offset: int):
super().__init__()
self.ex_iterable = ex_iterable
self.step = step
self.offset = offset
# TODO(QL): implement iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = self.ex_iterable._init_state_dict()
return self._state_dict
def __iter__(self):
ex_iterator = iter(self.ex_iterable)
while True:
batch = list(islice(ex_iterator, self.step))
if len(batch) > self.offset:
yield batch[self.offset]
else:
break
def shuffle_data_sources(self, generator: np.random.Generator) -> "StepExamplesIterable":
return StepExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator), step=self.step, offset=self.offset
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "StepExamplesIterable":
return StepExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers), step=self.step, offset=self.offset
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class CyclingMultiSourcesExamplesIterable(_BaseExamplesIterable):
def __init__(
self,
ex_iterables: List[_BaseExamplesIterable],
stopping_strategy: Literal["first_exhausted", "all_exhausted"] = "first_exhausted",
):
super().__init__()
self.ex_iterables = ex_iterables
self.stopping_strategy = stopping_strategy
# if undersampling ("first_exhausted"), we stop as soon as one dataset is exhausted
# if oversampling ("all_exhausted"), we stop as soons as every dataset is exhausted, i.e as soon as every samples of every dataset has been visited at least once
self.bool_strategy_func = np.all if (stopping_strategy == "all_exhausted") else np.any
# TODO(QL): implement iter_arrow
def _get_indices_iterator(self):
# this is an infinite iterator to keep track of which iterator we want to pick examples from
ex_iterable_idx = self._state_dict["ex_iterable_idx"] if self._state_dict else 0
for next_ex_iterable_idx in islice(cycle(range(len(self.ex_iterables))), ex_iterable_idx + 1, None):
if self._state_dict:
self._state_dict["ex_iterable_idx"] = next_ex_iterable_idx
yield ex_iterable_idx
ex_iterable_idx = next_ex_iterable_idx
def _init_state_dict(self) -> dict:
self._state_dict = {
"ex_iterable_idx": 0,
"ex_iterables": [ex_iterable._init_state_dict() for ex_iterable in self.ex_iterables],
"previous_states": [None] * len(self.ex_iterables),
"is_exhausted": [False] * len(self.ex_iterables),
}
return self._state_dict
def __iter__(self):
# we use this to buffer one example of each iterator to know if an iterator is exhausted
nexts = [None] * len(self.ex_iterables)
# because of that, we need to rewind 1 example when reloading the state dict
if self._state_dict:
for i in range(len(self.ex_iterables)):
if self._state_dict["previous_states"][i] is not None:
self.ex_iterables[i].load_state_dict(self._state_dict["previous_states"][i])
iterators = [iter(ex_iterable) for ex_iterable in self.ex_iterables]
indices_iterator = self._get_indices_iterator()
is_exhausted = (
np.array(self._state_dict["is_exhausted"]) if self._state_dict else np.full(len(self.ex_iterables), False)
)
for i in indices_iterator:
# if the stopping criteria is met, break the main for loop
if self.bool_strategy_func(is_exhausted):
break
# let's pick one example from the iterator at index i
if nexts[i] is None:
nexts[i] = next(iterators[i], False)
result = nexts[i]
if self._state_dict:
self._state_dict["previous_states"][i] = deepcopy(self._state_dict["ex_iterables"][i])
nexts[i] = next(iterators[i], False)
# the iterator is exhausted
if nexts[i] is False:
is_exhausted[i] = True
if self._state_dict:
self._state_dict["is_exhausted"][i] = True
# we reset it in case the stopping crtieria isn't met yet
nexts[i] = None
if self._state_dict:
self._state_dict["ex_iterables"][i] = self.ex_iterables[i]._init_state_dict()
self._state_dict["previous_states"][i] = None
iterators[i] = iter(self.ex_iterables[i])
if result is not False:
yield result
def shuffle_data_sources(self, generator: np.random.Generator) -> "CyclingMultiSourcesExamplesIterable":
"""Shuffle each underlying examples iterable."""
ex_iterables = [ex_iterable.shuffle_data_sources(generator) for ex_iterable in self.ex_iterables]
return CyclingMultiSourcesExamplesIterable(ex_iterables, self.stopping_strategy)
@property
def n_shards(self) -> int:
return min(ex_iterable.n_shards for ex_iterable in self.ex_iterables)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "CyclingMultiSourcesExamplesIterable":
"""Either keep only the requested shard, or propagate the request to the underlying iterable."""
return CyclingMultiSourcesExamplesIterable(
[iterable.shard_data_sources(worker_id, num_workers) for iterable in self.ex_iterables],
stopping_strategy=self.stopping_strategy,
)
class VerticallyConcatenatedMultiSourcesExamplesIterable(_BaseExamplesIterable):
"""
VerticallyConcatenatedMultiSourcesExamplesIterable simply chains the input iterables.
It doesn't require the examples iterables to always yield the same columns.
Instead, this is handled by the `IterableDataset` class or `TypedExamplesIterable`.
For information, `IterableDataset` merges the features of all the datasets to concatenate into one.
We use `IterableDataset._resolve_features` to obtain the features of all the datasets to concatenate.
Then for each example, `IterableDataset` and `TypedExamplesIterable` automatically fill missing columns with None.
This is done with `_apply_feature_types_on_example`.
"""
def __init__(self, ex_iterables: List[_BaseExamplesIterable]):
super().__init__()
self.ex_iterables = ex_iterables
@property
def iter_arrow(self):
if all(ex_iterable.iter_arrow is not None for ex_iterable in self.ex_iterables):
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {
"ex_iterable_idx": 0,
"ex_iterables": [ex_iterable._init_state_dict() for ex_iterable in self.ex_iterables],
}
return self._state_dict
def __iter__(self):
ex_iterable_idx_start = self._state_dict["ex_iterable_idx"] if self._state_dict else 0
for ex_iterable in islice(self.ex_iterables, ex_iterable_idx_start, None):
yield from ex_iterable
if self._state_dict:
self._state_dict["ex_iterable_idx"] += 1
def _iter_arrow(self):
ex_iterable_idx_start = self._state_dict["ex_iterable_idx"] if self._state_dict else 0
for ex_iterable in islice(self.ex_iterables, ex_iterable_idx_start, None):
yield from ex_iterable.iter_arrow()
if self._state_dict:
self._state_dict["ex_iterable_idx"] += 1
def shuffle_data_sources(
self, generator: np.random.Generator
) -> "VerticallyConcatenatedMultiSourcesExamplesIterable":
"""Shuffle the list of examples iterable, as well as each underlying examples iterable."""
rng = deepcopy(generator)
ex_iterables = list(self.ex_iterables)
rng.shuffle(ex_iterables)
ex_iterables = [ex_iterable.shuffle_data_sources(generator) for ex_iterable in ex_iterables]
return VerticallyConcatenatedMultiSourcesExamplesIterable(ex_iterables)
@property
def n_shards(self) -> int:
return min(ex_iterable.n_shards for ex_iterable in self.ex_iterables)
def shard_data_sources(
self, worker_id: int, num_workers: int
) -> "VerticallyConcatenatedMultiSourcesExamplesIterable":
"""Either keep only the requested shard, or propagate the request to the underlying iterable."""
return VerticallyConcatenatedMultiSourcesExamplesIterable(
[iterable.shard_data_sources(worker_id, num_workers) for iterable in self.ex_iterables]
)
def _check_column_names(column_names: List[str]):
"""Check the column names to make sure they don't contain duplicates."""
counter = Counter(column_names)
if not all(count == 1 for count in counter.values()):
duplicated_columns = [col for col in counter if counter[col] > 1]
raise ValueError(
f"The examples iterables can't have duplicated columns but columns {duplicated_columns} are duplicated."
)
class HorizontallyConcatenatedMultiSourcesExamplesIterable(_BaseExamplesIterable):
"""
HorizontallyConcatenatedMultiSourcesExamplesIterable merges examples together for the input list of iterables.
It also checks that there are no duplicate columns (otherwise we don't know which one to keep).
This check is done once when yielding the first example.
However it doesn't fill missing columns with None.
Instead, this is handled by the `IterableDataset` class or `TypedExamplesIterable`.
For information, `IterableDataset` merges the features of all the datasets to concatenate into one.
We use `IterableDataset._resolve_features` to obtain the features of all the datasets to concatenate.
Then for each example, `IterableDataset` and `TypedExamplesIterable` automatically fill missing columns with None.
This is done with `_apply_feature_types_on_example`.
"""
def __init__(self, ex_iterables: List[_BaseExamplesIterable]):
super().__init__()
self.ex_iterables = ex_iterables
# TODO(QL): implement iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {"ex_iterables": [ex_iterable._init_state_dict() for ex_iterable in self.ex_iterables]}
return self._state_dict
def __iter__(self):
ex_iterators = [iter(ex_iterable) for ex_iterable in self.ex_iterables]
for i in itertools.count():
keys = []
examples = []
for ex_iterator in list(ex_iterators):
try:
key, example = next(ex_iterator)
keys.append(key)
examples.append(example)
except StopIteration:
ex_iterators.remove(ex_iterator)
if ex_iterators:
if i == 0:
_check_column_names([column_name for example in examples for column_name in example])
new_example = {}
for example in examples:
new_example.update(example)
new_key = "_".join(str(key) for key in keys)
yield new_key, new_example
else:
break
def shuffle_data_sources(
self, generator: np.random.Generator
) -> "HorizontallyConcatenatedMultiSourcesExamplesIterable":
"""Doesn't shuffle the wrapped examples iterable since it would break the alignment between them."""
return self
@property
def n_shards(self) -> int:
return 1
def shard_data_sources(
self, worker_id: int, num_workers: int
) -> "HorizontallyConcatenatedMultiSourcesExamplesIterable":
"""Either keep only the requested shard, or propagate the request to the underlying iterable."""
return HorizontallyConcatenatedMultiSourcesExamplesIterable(
[iterable.shard_data_sources(worker_id, num_workers) for iterable in self.ex_iterables]
)
class RandomlyCyclingMultiSourcesExamplesIterable(CyclingMultiSourcesExamplesIterable):
def __init__(
self,
ex_iterables: List[_BaseExamplesIterable],
generator: np.random.Generator,
probabilities: Optional[List[float]] = None,
stopping_strategy: Literal["first_exhausted", "all_exhausted"] = "first_exhausted",
):
super().__init__(ex_iterables, stopping_strategy)
self.generator = deepcopy(generator)
self.probabilities = probabilities
# TODO(QL): implement iter_arrow
def _get_indices_iterator(self):
rng = deepcopy(self.generator)
num_sources = len(self.ex_iterables)
random_batch_size = 1000
# this is an infinite iterator that randomly samples the index of the source to pick examples from
index_offset = self._state_dict["bit_generator_index_offset"] if self._state_dict else 0
if self._state_dict:
rng.bit_generator.state = self._state_dict["bit_generator_state"]
if self.probabilities is None:
while True:
for i in islice(rng.integers(0, num_sources, size=random_batch_size), index_offset, None):
index_offset = (index_offset + 1) % random_batch_size
if self._state_dict:
self._state_dict["bit_generator_index_offset"] = index_offset
if index_offset == 0:
self._state_dict["bit_generator_state"] = rng.bit_generator.state
yield int(i)
else:
while True:
for i in islice(
rng.choice(num_sources, size=random_batch_size, p=self.probabilities), index_offset, None
):
index_offset = (index_offset + 1) % random_batch_size
if self._state_dict:
self._state_dict["bit_generator_index_offset"] = index_offset
if index_offset == 0:
self._state_dict["bit_generator_state"] = rng.bit_generator.state
yield int(i)
def _init_state_dict(self) -> dict:
self._state_dict = {
"bit_generator_state": self.generator.bit_generator.state,
"bit_generator_index_offset": 0,
"ex_iterables": [ex_iterable._init_state_dict() for ex_iterable in self.ex_iterables],
"previous_states": [None] * len(self.ex_iterables),
"is_exhausted": [False] * len(self.ex_iterables),
}
return self._state_dict
def shuffle_data_sources(self, generator: np.random.Generator) -> "RandomlyCyclingMultiSourcesExamplesIterable":
"""Shuffle the data sources of each wrapped examples iterable."""
ex_iterables = [ex_iterable.shuffle_data_sources(generator) for ex_iterable in self.ex_iterables]
return RandomlyCyclingMultiSourcesExamplesIterable(
ex_iterables,
generator=generator,
probabilities=self.probabilities,
stopping_strategy=self.stopping_strategy,
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "RandomlyCyclingMultiSourcesExamplesIterable":
"""Either keep only the requested shard, or propagate the request to the underlying iterable."""
return RandomlyCyclingMultiSourcesExamplesIterable(
[iterable.shard_data_sources(worker_id, num_workers) for iterable in self.ex_iterables],
self.generator,
self.probabilities,
self.stopping_strategy,
)
class MappedExamplesIterable(_BaseExamplesIterable):
def __init__(
self,
ex_iterable: _BaseExamplesIterable,
function: Callable,
with_indices: bool = False,
input_columns: Optional[List[str]] = None,
batched: bool = False,
batch_size: Optional[int] = 1000,
drop_last_batch: bool = False,
remove_columns: Optional[List[str]] = None,
fn_kwargs: Optional[dict] = None,
formatting: Optional["FormattingConfig"] = None,
):
super().__init__()
self.ex_iterable = ex_iterable
self.function = function
self.batched = batched
self.batch_size = batch_size
self.drop_last_batch = drop_last_batch
self.remove_columns = remove_columns
self.with_indices = with_indices
self.input_columns = input_columns
self.fn_kwargs = fn_kwargs or {}
self.formatting = formatting
# sanity checks
if formatting and formatting.format_type == "arrow":
# batch_size should match for iter_arrow
if not isinstance(ex_iterable, RebatchedArrowExamplesIterable):
raise ValueError(
"The Arrow-formatted MappedExamplesIterable has underlying iterable"
f"that is a {type(ex_iterable).__name__} instead of a RebatchedArrowExamplesIterable."
)
elif ex_iterable.batch_size != (batch_size if batched else 1):
raise ValueError(
f"The Arrow-formatted MappedExamplesIterable has batch_size={batch_size if batched else 1} which is"
f"different from {ex_iterable.batch_size=} from its underlying iterable."
)
@property
def iter_arrow(self):
if self.formatting and self.formatting.format_type == "arrow":
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {
"ex_iterable": self.ex_iterable._init_state_dict(),
"previous_state": None,
"num_examples_since_previous_state": 0,
"previous_state_example_idx": 0,
}
return self._state_dict
def __iter__(self):
if self.formatting and self.formatting.format_type == "arrow":
formatter = PythonFormatter()
for key, pa_table in self._iter_arrow(max_chunksize=1):
yield key, formatter.format_row(pa_table)
else:
yield from self._iter()
def _iter(self):
current_idx = self._state_dict["previous_state_example_idx"] if self._state_dict else 0
if self._state_dict and self._state_dict["previous_state"]:
self.ex_iterable.load_state_dict(self._state_dict["previous_state"])
num_examples_to_skip = self._state_dict["num_examples_since_previous_state"]
else:
num_examples_to_skip = 0
iterator = iter(self.ex_iterable)
if self.formatting:
formatter = get_formatter(self.formatting.format_type)
format_dict = (
formatter.recursive_tensorize if isinstance(formatter, TensorFormatter) else cast_to_python_objects
)
else:
format_dict = None
if self.batched:
if self._state_dict:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
self._state_dict["previous_state_example_idx"] = current_idx
for key, example in iterator:
# If `batched`, first build the batch, if `batch_size` is None or <=0, then the batch is the whole dataset
iterator_batch = (
iterator
if self.batch_size is None or self.batch_size <= 0
else islice(iterator, self.batch_size - 1)
)
key_examples_list = [(key, example)] + list(iterator_batch)
keys, examples = zip(*key_examples_list)
if (
self.drop_last_batch
and self.batch_size is not None
and self.batch_size > 0
and len(examples) < self.batch_size
): # ignore last batch
return
batch = _examples_to_batch(examples)
batch = format_dict(batch) if format_dict else batch
# then apply the transform
inputs = batch
function_args = [inputs] if self.input_columns is None else [inputs[col] for col in self.input_columns]
if self.with_indices:
function_args.append([current_idx + i for i in range(len(key_examples_list))])
transformed_batch = dict(batch) # this will be updated with the function output
transformed_batch.update(self.function(*function_args, **self.fn_kwargs))
# then remove the unwanted columns
if self.remove_columns:
for c in self.remove_columns:
del transformed_batch[c]
if transformed_batch:
first_col = next(iter(transformed_batch))
bad_cols = [
col
for col in transformed_batch
if len(transformed_batch[col]) != len(transformed_batch[first_col])
]
if bad_cols:
raise ValueError(
f"Column lengths mismatch: columns {bad_cols} have length {[len(transformed_batch[col]) for col in bad_cols]} while {first_col} has length {len(transformed_batch[first_col])}."
)
# the new key is the concatenation of the examples keys from the batch
new_key = "_".join(str(key) for key in keys)
# yield one example at a time from the transformed batch
for example in _batch_to_examples(transformed_batch):
current_idx += 1
if self._state_dict:
self._state_dict["num_examples_since_previous_state"] += 1
if num_examples_to_skip > 0:
num_examples_to_skip -= 1
continue
yield new_key, example
if self._state_dict:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
self._state_dict["previous_state_example_idx"] = current_idx
else:
for key, example in iterator:
# If not batched, we can apply the transform and yield the example directly
# first copy the example, since we might drop some keys
example = dict(example)
example = format_dict(example) if format_dict else example
# then apply the transform
inputs = example
function_args = [inputs] if self.input_columns is None else [inputs[col] for col in self.input_columns]
if self.with_indices:
function_args.append(current_idx)
transformed_example = dict(example) # this will be updated with the function output
transformed_example.update(self.function(*function_args, **self.fn_kwargs))
# then we remove the unwanted columns
if self.remove_columns:
for c in self.remove_columns:
del transformed_example[c]
current_idx += 1
if self._state_dict:
self._state_dict["previous_state_example_idx"] += 1
yield key, transformed_example
def _iter_arrow(self, max_chunksize: Optional[int] = None) -> Iterator[Tuple[Key, pa.Table]]:
if self.ex_iterable.iter_arrow:
iterator = self.ex_iterable.iter_arrow()
else:
iterator = _convert_to_arrow(
self.ex_iterable,
batch_size=self.batch_size if self.batched else 1,
drop_last_batch=self.drop_last_batch,
)
if self._state_dict and self._state_dict["previous_state"]:
self.ex_iterable.load_state_dict(self._state_dict["previous_state"])
num_examples_to_skip = self._state_dict["num_examples_since_previous_state"]
else:
num_examples_to_skip = 0
if self._state_dict and max_chunksize is not None:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
current_idx = self._state_dict["previous_state_example_idx"] if self._state_dict else 0
for key, pa_table in iterator:
if (
self.batched
and self.batch_size is not None
and len(pa_table) < self.batch_size
and self.drop_last_batch
):
return
# first build the batch
function_args = [pa_table] if self.input_columns is None else [pa_table[col] for col in self.input_columns]
if self.with_indices:
if self.batched:
function_args.append([current_idx + i for i in range(len(pa_table))])
else:
function_args.append(current_idx)
# then apply the transform
output_table = self.function(*function_args, **self.fn_kwargs)
if not isinstance(output_table, pa.Table):
raise TypeError(
f"Provided `function` which is applied to pyarrow tables returns a variable of type {type(output_table)}. Make sure provided `function` returns a a pyarrow table to update the dataset."
)
# we don't need to merge results for consistency with Dataset.map which merges iif both input and output are dicts
# then remove the unwanted columns
if self.remove_columns:
for column in self.remove_columns:
if column in output_table.column_names:
output_table = output_table.remove_column(output_table.column_names.index(column))
# return output
if max_chunksize is None:
current_idx += len(pa_table)
if self._state_dict:
self._state_dict["previous_state_example_idx"] += len(pa_table)
yield key, output_table
else:
for i, pa_subtable in enumerate(output_table.to_reader(max_chunksize=max_chunksize)):
current_idx += 1
if self._state_dict:
self._state_dict["num_examples_since_previous_state"] += 1
if num_examples_to_skip > 0:
num_examples_to_skip -= 1
continue
yield f"{key}_{i}", pa_subtable
if self._state_dict:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
self._state_dict["previous_state_example_idx"] += len(pa_table)
def shuffle_data_sources(self, generator: np.random.Generator) -> "MappedExamplesIterable":
"""Shuffle the wrapped examples iterable."""
return MappedExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator),
function=self.function,
with_indices=self.with_indices,
input_columns=self.input_columns,
batched=self.batched,
batch_size=self.batch_size,
drop_last_batch=self.drop_last_batch,
remove_columns=self.remove_columns,
fn_kwargs=self.fn_kwargs,
formatting=self.formatting,
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "MappedExamplesIterable":
"""Keep only the requested shard."""
return MappedExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
function=self.function,
with_indices=self.with_indices,
input_columns=self.input_columns,
batched=self.batched,
batch_size=self.batch_size,
drop_last_batch=self.drop_last_batch,
remove_columns=self.remove_columns,
fn_kwargs=self.fn_kwargs,
formatting=self.formatting,
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class FilteredExamplesIterable(_BaseExamplesIterable):
def __init__(
self,
ex_iterable: _BaseExamplesIterable,
function: Callable,
with_indices: bool = False,
input_columns: Optional[List[str]] = None,
batched: bool = False,
batch_size: Optional[int] = 1000,
fn_kwargs: Optional[dict] = None,
formatting: Optional["FormattingConfig"] = None,
):
super().__init__()
self.ex_iterable = ex_iterable
self.function = function
self.batched = batched
self.batch_size = batch_size
self.with_indices = with_indices
self.input_columns = input_columns
self.fn_kwargs = fn_kwargs or {}
self.formatting = formatting
# sanity checks
if formatting and formatting.format_type == "arrow":
# batch_size should match for iter_arrow
if not isinstance(ex_iterable, RebatchedArrowExamplesIterable):
raise ValueError(
"The Arrow-formatted FilteredExamplesIterable has underlying iterable"
f"that is a {type(ex_iterable).__name__} instead of a RebatchedArrowExamplesIterable."
)
elif ex_iterable.batch_size != (batch_size if batched else 1):
raise ValueError(
f"The Arrow-formatted FilteredExamplesIterable has batch_size={batch_size if batched else 1} which is"
f"different from {ex_iterable.batch_size=} from its underlying iterable."
)
@property
def iter_arrow(self):
if self.formatting and self.formatting.format_type == "arrow":
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {
"ex_iterable": self.ex_iterable._init_state_dict(),
"previous_state": None,
"num_examples_since_previous_state": 0,
"previous_state_example_idx": 0,
}
return self._state_dict
def __iter__(self):
if self.formatting and self.formatting.format_type == "arrow":
formatter = PythonFormatter()
for key, pa_table in self._iter_arrow(max_chunksize=1):
yield key, formatter.format_row(pa_table)
else:
yield from self._iter()
def _iter(self):
current_idx = self._state_dict["previous_state_example_idx"] if self._state_dict else 0
if self._state_dict and self._state_dict["previous_state"]:
self.ex_iterable.load_state_dict(self._state_dict["previous_state"])
num_examples_to_skip = self._state_dict["num_examples_since_previous_state"]
else:
num_examples_to_skip = 0
iterator = iter(self.ex_iterable)
if self.formatting:
formatter = get_formatter(self.formatting.format_type)
format_dict = (
formatter.recursive_tensorize if isinstance(formatter, TensorFormatter) else cast_to_python_objects
)
else:
format_dict = None
if self.batched:
if self._state_dict:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
self._state_dict["previous_state_example_idx"] = current_idx
for key, example in iterator:
# If `batched`, first build the batch, if `batch_size` is None or <=0, then the batch is the whole dataset
iterator_batch = (
iterator
if self.batch_size is None or self.batch_size <= 0
else islice(iterator, self.batch_size - 1)
)
key_examples_list = [(key, example)] + list(iterator_batch)
keys, examples = zip(*key_examples_list)
batch = _examples_to_batch(examples)
batch = format_dict(batch) if format_dict else batch
# then compute the mask for the batch
inputs = batch
function_args = [inputs] if self.input_columns is None else [inputs[col] for col in self.input_columns]
if self.with_indices:
function_args.append([current_idx + i for i in range(len(key_examples_list))])
mask = self.function(*function_args, **self.fn_kwargs)
# yield one example at a time from the batch
for key_example, to_keep in zip(key_examples_list, mask):
current_idx += 1
if self._state_dict:
self._state_dict["num_examples_since_previous_state"] += 1
if num_examples_to_skip > 0:
num_examples_to_skip -= 1
continue
if to_keep:
yield key_example
if self._state_dict:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
self._state_dict["previous_state_example_idx"] = current_idx
else:
for key, example in iterator:
# If not batched, we can apply the filtering function direcly
example = dict(example)
inputs = format_dict(example) if format_dict else example
function_args = [inputs] if self.input_columns is None else [inputs[col] for col in self.input_columns]
if self.with_indices:
function_args.append(current_idx)
to_keep = self.function(*function_args, **self.fn_kwargs)
current_idx += 1
if self._state_dict:
self._state_dict["previous_state_example_idx"] += 1
if to_keep:
yield key, example
def _iter_arrow(self, max_chunksize: Optional[int] = None):
if self.ex_iterable.iter_arrow:
iterator = self.ex_iterable.iter_arrow()
else:
iterator = _convert_to_arrow(self.ex_iterable, batch_size=self.batch_size if self.batched else 1)
if self._state_dict and self._state_dict["previous_state"]:
self.ex_iterable.load_state_dict(self._state_dict["previous_state"])
num_examples_to_skip = self._state_dict["num_examples_since_previous_state"]
else:
num_examples_to_skip = 0
if self._state_dict and max_chunksize is not None:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
current_idx = self._state_dict["previous_state_example_idx"] if self._state_dict else 0
for key, pa_table in iterator:
if (
self.batched
and self.batch_size is not None
and len(pa_table) < self.batch_size
and self.drop_last_batch
):
return
# first build the batch
function_args = [pa_table] if self.input_columns is None else [pa_table[col] for col in self.input_columns]
if self.with_indices:
if self.batched:
function_args.append([current_idx + i for i in range(len(pa_table))])
else:
function_args.append(current_idx)
# then apply the transform
mask = self.function(*function_args, **self.fn_kwargs)
# return output
if self.batched:
output_table = pa_table.filter(mask)
elif mask.as_py() if isinstance(mask, pa.BooleanScalar) else mask:
output_table = pa_table
else:
output_table = pa_table.slice(0, 0)
if max_chunksize is None:
current_idx += len(pa_table)
if self._state_dict:
self._state_dict["previous_state_example_idx"] += len(pa_table)
if len(output_table) > 0:
yield key, output_table
else:
for i, pa_subtable in enumerate(output_table.to_reader(max_chunksize=max_chunksize)):
current_idx += 1
if self._state_dict:
self._state_dict["num_examples_since_previous_state"] += 1
if num_examples_to_skip > 0:
num_examples_to_skip -= 1
continue
yield f"{key}_{i}", pa_subtable
if self._state_dict:
self._state_dict["previous_state"] = self.ex_iterable.state_dict()
self._state_dict["num_examples_since_previous_state"] = 0
self._state_dict["previous_state_example_idx"] += len(pa_table)
def shuffle_data_sources(self, seed: Optional[int]) -> "FilteredExamplesIterable":
"""Shuffle the wrapped examples iterable."""
return FilteredExamplesIterable(
self.ex_iterable.shuffle_data_sources(seed),
function=self.function,
with_indices=self.with_indices,
input_columns=self.input_columns,
batched=self.batched,
batch_size=self.batch_size,
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "FilteredExamplesIterable":
"""Keep only the requested shard."""
return FilteredExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
function=self.function,
with_indices=self.with_indices,
input_columns=self.input_columns,
batched=self.batched,
batch_size=self.batch_size,
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class BufferShuffledExamplesIterable(_BaseExamplesIterable):
def __init__(self, ex_iterable: _BaseExamplesIterable, buffer_size: int, generator: np.random.Generator):
super().__init__()
self.ex_iterable = ex_iterable
self.buffer_size = buffer_size
self.generator = generator
# TODO(QL): implement iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = self.ex_iterable._init_state_dict()
self._original_state_dict = self.state_dict()
return self._state_dict
def load_state_dict(self, state_dict: dict) -> dict:
if self._state_dict:
if state_dict != self._original_state_dict:
logger.warning(
"Loading a state dict of a shuffle buffer of a dataset without the buffer content."
"The shuffle buffer will be refilled before starting to yield new examples."
)
return super().load_state_dict(state_dict)
@staticmethod
def _iter_random_indices(rng: np.random.Generator, buffer_size: int, random_batch_size=1000) -> Iterator[int]:
while True:
yield from (int(i) for i in rng.integers(0, buffer_size, size=random_batch_size))
def __iter__(self):
buffer_size = self.buffer_size
rng = deepcopy(self.generator)
indices_iterator = self._iter_random_indices(rng, buffer_size)
# this is the shuffle buffer that we keep in memory
mem_buffer = []
for x in self.ex_iterable:
if len(mem_buffer) == buffer_size: # if the buffer is full, pick and example from it
i = next(indices_iterator)
yield mem_buffer[i]
mem_buffer[i] = x # replace the picked example by a new one
else: # otherwise, keep filling the buffer
mem_buffer.append(x)
# when we run out of examples, we shuffle the remaining examples in the buffer and yield them
rng.shuffle(mem_buffer)
yield from mem_buffer
def shuffle_data_sources(self, generator: np.random.Generator) -> "BufferShuffledExamplesIterable":
"""Shuffle the wrapped examples iterable as well as the shuffling buffer."""
return BufferShuffledExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator), buffer_size=self.buffer_size, generator=generator
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "BufferShuffledExamplesIterable":
"""Keep only the requested shard."""
return BufferShuffledExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
buffer_size=self.buffer_size,
generator=self.generator,
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class SkipExamplesIterable(_BaseExamplesIterable):
def __init__(
self,
ex_iterable: _BaseExamplesIterable,
n: int,
block_sources_order_when_shuffling: bool = True,
split_when_sharding: bool = True,
):
super().__init__()
self.ex_iterable = ex_iterable
self.n = n
self.block_sources_order_when_shuffling = block_sources_order_when_shuffling
self.split_when_sharding = split_when_sharding
# TODO(QL): implement iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {"skipped": False, "ex_iterable": self.ex_iterable._init_state_dict()}
return self._state_dict
def __iter__(self):
ex_iterable_idx_start = 0 if self._state_dict and self._state_dict["skipped"] else self.n
if self._state_dict:
self._state_dict["skipped"] = True
yield from islice(self.ex_iterable, ex_iterable_idx_start, None)
@staticmethod
def split_number(num, n):
quotient = num // n
remainder = num % n
result = [quotient] * n
for i in range(remainder):
result[i] += 1
return result
def shuffle_data_sources(self, generator: np.random.Generator) -> "SkipExamplesIterable":
"""May not shuffle the wrapped examples iterable since it would skip examples from other shards instead."""
if self.block_sources_order_when_shuffling:
return self
else:
return SkipExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator),
n=self.n,
block_sources_order_when_shuffling=self.block_sources_order_when_shuffling,
split_when_sharding=self.split_when_sharding,
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "SkipExamplesIterable":
"""Keep only the requested shard."""
if self.split_when_sharding:
return SkipExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
n=self.split_number(self.n, num_workers)[worker_id],
block_sources_order_when_shuffling=self.block_sources_order_when_shuffling,
split_when_sharding=self.split_when_sharding,
)
else:
return self
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
class TakeExamplesIterable(_BaseExamplesIterable):
def __init__(
self,
ex_iterable: _BaseExamplesIterable,
n: int,
block_sources_order_when_shuffling: bool = True,
split_when_sharding: bool = True,
):
super().__init__()
self.ex_iterable = ex_iterable
self.n = n
self.block_sources_order_when_shuffling = block_sources_order_when_shuffling
self.split_when_sharding = split_when_sharding
# TODO(QL): implement iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = {"num_taken": 0, "ex_iterable": self.ex_iterable._init_state_dict()}
return self._state_dict
def __iter__(self):
ex_iterable_num_taken = self._state_dict["num_taken"] if self._state_dict else 0
for key_example in islice(self.ex_iterable, self.n - ex_iterable_num_taken):
if self._state_dict:
self._state_dict["num_taken"] += 1
yield key_example
@staticmethod
def split_number(num, n):
quotient = num // n
remainder = num % n
result = [quotient] * n
for i in range(remainder):
result[i] += 1
return result
def shuffle_data_sources(self, generator: np.random.Generator) -> "TakeExamplesIterable":
"""May not shuffle the wrapped examples iterable since it would take examples from other shards instead."""
if self.block_sources_order_when_shuffling:
return self
else:
return TakeExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator),
n=self.n,
block_sources_order_when_shuffling=self.block_sources_order_when_shuffling,
split_when_sharding=self.split_when_sharding,
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "TakeExamplesIterable":
"""Keep only the requested shard."""
if self.split_when_sharding:
return TakeExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
n=self.split_number(self.n, num_workers)[worker_id],
block_sources_order_when_shuffling=self.block_sources_order_when_shuffling,
split_when_sharding=self.split_when_sharding,
)
else:
return TakeExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
n=self.n,
block_sources_order_when_shuffling=self.block_sources_order_when_shuffling,
split_when_sharding=self.split_when_sharding,
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
def _apply_feature_types_on_example(
example: dict, features: Features, token_per_repo_id: Dict[str, Union[str, bool, None]]
) -> dict:
example = dict(example)
# add missing columns
for column_name in features:
if column_name not in example:
example[column_name] = None
# we encode the example for ClassLabel feature types for example
encoded_example = features.encode_example(example)
# Decode example for Audio feature, e.g.
decoded_example = features.decode_example(encoded_example, token_per_repo_id=token_per_repo_id)
return decoded_example
def _apply_feature_types_on_batch(
batch: dict, features: Features, token_per_repo_id: Dict[str, Union[str, bool, None]]
) -> dict:
batch = dict(batch)
# add missing columns
n_examples = len(batch[next(iter(batch))])
for column_name in features:
if column_name not in batch:
batch[column_name] = [None] * n_examples
# we encode the batch for ClassLabel feature types for example
encoded_batch = features.encode_batch(batch)
# Decode batch for Audio feature, e.g.
decoded_batch = features.decode_batch(encoded_batch, token_per_repo_id=token_per_repo_id)
return decoded_batch
class TypedExamplesIterable(_BaseExamplesIterable):
def __init__(
self,
ex_iterable: _BaseExamplesIterable,
features: Features,
token_per_repo_id: Dict[str, Union[str, bool, None]],
):
super().__init__()
self.ex_iterable = ex_iterable
self.features = features
self.token_per_repo_id = token_per_repo_id
@property
def iter_arrow(self):
if self.ex_iterable.iter_arrow is not None:
return self._iter_arrow
def _init_state_dict(self) -> dict:
self._state_dict = self.ex_iterable._init_state_dict()
return self._state_dict
def __iter__(self):
# Then for each example, `TypedExamplesIterable` automatically fills missing columns with None.
# This is done with `_apply_feature_types_on_example`.
for key, example in self.ex_iterable:
yield (
key,
_apply_feature_types_on_example(example, self.features, token_per_repo_id=self.token_per_repo_id),
)
def _iter_arrow(self) -> Iterator[Tuple[Key, pa.Table]]:
schema = self.features.arrow_schema
for key, pa_table in self.ex_iterable.iter_arrow():
columns = set(pa_table.column_names)
# add missing columns
for column_name in self.features:
if column_name not in columns:
col = pa.NullArray.from_buffers(pa.null(), len(pa_table), [None])
pa_table = pa_table.append_column(column_name, col)
if pa_table.schema != schema:
pa_table = cast_table_to_features(pa_table, self.features)
yield key, pa_table
def shuffle_data_sources(self, generator: np.random.Generator) -> "TypedExamplesIterable":
"""Shuffle the wrapped examples iterable."""
return TypedExamplesIterable(
self.ex_iterable.shuffle_data_sources(generator),
features=self.features,
token_per_repo_id=self.token_per_repo_id,
)
def shard_data_sources(self, worker_id: int, num_workers: int) -> "TypedExamplesIterable":
"""Keep only the requested shard."""
return TypedExamplesIterable(
self.ex_iterable.shard_data_sources(worker_id, num_workers),
features=self.features,
token_per_repo_id=self.token_per_repo_id,
)
@property
def n_shards(self) -> int:
return self.ex_iterable.n_shards
@dataclass
class FormattingConfig:
format_type: Optional[str]
def __post_init__(self):
if self.format_type == "pandas":
raise NotImplementedError(
"The 'pandas' formatting is not implemented for iterable datasets. You can use 'numpy' or 'arrow' instead."
)
@dataclass
class ShufflingConfig:
generator: np.random.Generator
_original_seed: Optional[int] = None
@dataclass
class DistributedConfig:
rank: int
world_size: int
def _maybe_add_torch_iterable_dataset_parent_class(cls):
"""Add torch.utils.data.IterableDataset as a parent class if 'torch' is available"""
if config.TORCH_AVAILABLE:
import torch.utils.data
if torch.utils.data.IterableDataset not in cls.__bases__:
cls.__bases__ += (torch.utils.data.IterableDataset,)
def _maybe_share_with_torch_persistent_workers(value: Union[int, "torch.Tensor"]) -> Union[int, "torch.Tensor"]:
if config.TORCH_AVAILABLE:
import torch
if isinstance(value, torch.Tensor):
return value.share_memory_()
else:
return torch.tensor(value).share_memory_()
else:
return value
class IterableDataset(DatasetInfoMixin):
"""A Dataset backed by an iterable."""
def __init__(
self,
ex_iterable: _BaseExamplesIterable,
info: Optional[DatasetInfo] = None,
split: Optional[NamedSplit] = None,
formatting: Optional[FormattingConfig] = None,
shuffling: Optional[ShufflingConfig] = None,
distributed: Optional[DistributedConfig] = None,
token_per_repo_id: Optional[Dict[str, Union[str, bool, None]]] = None,
):
if distributed and distributed.world_size > 1 and shuffling and shuffling._original_seed is None:
raise RuntimeError(
"The dataset doesn't have a fixed random seed across nodes to shuffle and split the list of dataset shards by node. "
"Please pass e.g. `seed=42` in `.shuffle()` to make all the nodes use the same seed. "
)
info = info.copy() if info is not None else DatasetInfo()
DatasetInfoMixin.__init__(self, info=info, split=split)
self._ex_iterable = copy.copy(ex_iterable)
self._formatting = formatting
self._shuffling = shuffling
self._distributed = distributed
self._token_per_repo_id: Dict[str, Union[str, bool, None]] = token_per_repo_id or {}
self._epoch: Union[int, "torch.Tensor"] = _maybe_share_with_torch_persistent_workers(0)
self._starting_state_dict: Optional[dict] = None
self._prepared_ex_iterable = self._prepare_ex_iterable_for_iteration()
self._state_dict = self._prepared_ex_iterable._init_state_dict()
_maybe_add_torch_iterable_dataset_parent_class(self.__class__)
def state_dict(self) -> dict:
"""Get the current state_dict of the dataset.
It corresponds to the state at the latest example it yielded.
Resuming returns exactly where the checkpoint was saved except in two cases:
1. examples from shuffle buffers are lost when resuming and the buffers are refilled with new data
2. combinations of `.with_format(arrow)` and batched `.map()` may skip one batch.
Returns:
`dict`
Example:
```py
>>> from datasets import Dataset, concatenate_datasets
>>> ds = Dataset.from_dict({"a": range(6)}).to_iterable_dataset(num_shards=3)
>>> for idx, example in enumerate(ds):
... print(example)
... if idx == 2:
... state_dict = ds.state_dict()
... print("checkpoint")
... break
>>> ds.load_state_dict(state_dict)
>>> print(f"restart from checkpoint")
>>> for example in ds:
... print(example)
```
which returns:
```
{'a': 0}
{'a': 1}
{'a': 2}
checkpoint
restart from checkpoint
{'a': 3}
{'a': 4}
{'a': 5}
```
```py
>>> from torchdata.stateful_dataloader import StatefulDataLoader
>>> ds = load_dataset("deepmind/code_contests", streaming=True, split="train")
>>> dataloader = StatefulDataLoader(ds, batch_size=32, num_workers=4)
>>> # checkpoint
>>> state_dict = dataloader.state_dict() # uses ds.state_dict() under the hood
>>> # resume from checkpoint
>>> dataloader.load_state_dict(state_dict) # uses ds.load_state_dict() under the hood
```
"""
return copy.deepcopy(self._state_dict)
def load_state_dict(self, state_dict: dict) -> None:
"""Load the state_dict of the dataset.
The iteration will restart at the next example from when the state was saved.
Resuming returns exactly where the checkpoint was saved except in two cases:
1. examples from shuffle buffers are lost when resuming and the buffers are refilled with new data
2. combinations of `.with_format(arrow)` and batched `.map()` may skip one batch.
Example:
```py
>>> from datasets import Dataset, concatenate_datasets
>>> ds = Dataset.from_dict({"a": range(6)}).to_iterable_dataset(num_shards=3)
>>> for idx, example in enumerate(ds):
... print(example)
... if idx == 2:
... state_dict = ds.state_dict()
... print("checkpoint")
... break
>>> ds.load_state_dict(state_dict)
>>> print(f"restart from checkpoint")
>>> for example in ds:
... print(example)
```
which returns:
```
{'a': 0}
{'a': 1}
{'a': 2}
checkpoint
restart from checkpoint
{'a': 3}
{'a': 4}
{'a': 5}
```
```py
>>> from torchdata.stateful_dataloader import StatefulDataLoader
>>> ds = load_dataset("deepmind/code_contests", streaming=True, split="train")
>>> dataloader = StatefulDataLoader(ds, batch_size=32, num_workers=4)
>>> # checkpoint
>>> state_dict = dataloader.state_dict() # uses ds.state_dict() under the hood
>>> # resume from checkpoint
>>> dataloader.load_state_dict(state_dict) # uses ds.load_state_dict() under the hood
```
"""
self._prepared_ex_iterable.load_state_dict(state_dict)
self._starting_state_dict = state_dict
def __repr__(self):
return f"IterableDataset({{\n features: {list(self._info.features.keys()) if self._info.features is not None else 'Unknown'},\n n_shards: {self.n_shards}\n}})"
def __getstate__(self):
return self.__dict__
def __setstate__(self, d):
self.__dict__ = d
# Re-add torch shared memory, since shared memory is not always kept when pickling
self._epoch = _maybe_share_with_torch_persistent_workers(self._epoch)
# Re-add torch iterable dataset as a parent class, since dynamically added parent classes are not kept when pickling
_maybe_add_torch_iterable_dataset_parent_class(self.__class__)
def _head(self, n=5):
return _examples_to_batch(list(self.take(n)))
@property
def epoch(self) -> int:
return int(self._epoch)
def _effective_generator(self):
if self._shuffling and self.epoch == 0:
return self._shuffling.generator
elif self._shuffling:
# Create effective seed using self.epoch (we subtract in order to avoir overflow in long_scalars)
effective_seed = deepcopy(self._shuffling.generator).integers(0, 1 << 63) - self.epoch
effective_seed = (1 << 63) + effective_seed if effective_seed < 0 else effective_seed
return np.random.default_rng(effective_seed)
else:
raise ValueError("This dataset is not shuffled")
@property
def n_shards(self) -> int:
if self._distributed and self._ex_iterable.n_shards % self._distributed.world_size == 0:
return self._ex_iterable.n_shards // self._distributed.world_size
return self._ex_iterable.n_shards
def _iter_pytorch(self):
ex_iterable = self._prepare_ex_iterable_for_iteration()
# Fix for fsspec when using multiprocess to avoid hanging in the ML training loop. (only required for fsspec >= 0.9.0)
# See https://github.com/fsspec/gcsfs/issues/379
fsspec.asyn.reset_lock()
# check if there aren't too many workers
import torch.utils.data
worker_info = torch.utils.data.get_worker_info()
if self._is_main_process() and ex_iterable.n_shards < worker_info.num_workers:
logger.warning(
f"Too many dataloader workers: {worker_info.num_workers} (max is dataset.n_shards={ex_iterable.n_shards}). "
f"Stopping {worker_info.num_workers - ex_iterable.n_shards} dataloader workers."
)
logger.info(
f"To parallelize data loading, we give each process some shards (or data sources) to process. "
f"Therefore it's unnecessary to have a number of workers greater than dataset.n_shards={ex_iterable.n_shards}. "
f"To enable more parallelism, please split the dataset in more files than {ex_iterable.n_shards}."
)
# split workload
_log_prefix = f"node#{self._distributed.rank} " if self._distributed else ""
shards_indices = ex_iterable.split_shard_indices_by_worker(worker_info.id, worker_info.num_workers)
if shards_indices:
logger.debug(
f"{_log_prefix}dataloader worker#{worker_info.id}, ': Starting to iterate over {len(shards_indices)}/{ex_iterable.n_shards} shards."
)
ex_iterable = ex_iterable.shard_data_sources(worker_id=worker_info.id, num_workers=worker_info.num_workers)
self._state_dict = ex_iterable._init_state_dict()
if self._starting_state_dict:
ex_iterable.load_state_dict(self._starting_state_dict)
if self._formatting:
formatter = get_formatter(self._formatting.format_type, features=self.features)
format_dict = (
formatter.recursive_tensorize if isinstance(formatter, TensorFormatter) else cast_to_python_objects
)
else:
format_dict = None
if self._formatting and (ex_iterable.iter_arrow or self._formatting == "arrow"):
if ex_iterable.iter_arrow:
iterator = ex_iterable.iter_arrow()
else:
iterator = _convert_to_arrow(ex_iterable, batch_size=1)
for key, pa_table in iterator:
yield formatter.format_row(pa_table)
return
else:
for key, example in ex_iterable:
if self.features:
# `IterableDataset` automatically fills missing columns with None.
# This is done with `_apply_feature_types_on_example`.
example = _apply_feature_types_on_example(
example, self.features, token_per_repo_id=self._token_per_repo_id
)
yield format_dict(example) if format_dict else example
logger.debug(
f"{_log_prefix}dataloader worker#{worker_info.id}, ': Finished iterating over {len(shards_indices)}/{ex_iterable.n_shards} shards."
)
else:
logger.debug(
f"{_log_prefix}dataloader worker#{worker_info.id}, ': Stopping... Number of dataset shards < num_workers ({ex_iterable.n_shards}<{worker_info.num_workers})."
)
def _is_main_process(self):
if self._distributed and self._distributed.rank > 0:
return False
if "torch" in sys.modules:
import torch.utils.data
worker_info = torch.utils.data.get_worker_info()
if worker_info is not None and worker_info.id > 0:
return False
return True
def _prepare_ex_iterable_for_iteration(
self, batch_size: int = 1, drop_last_batch: bool = False
) -> _BaseExamplesIterable:
ex_iterable = self._ex_iterable
if self._formatting and (ex_iterable.iter_arrow or self._formatting.format_type == "arrow"):
ex_iterable = RebatchedArrowExamplesIterable(
ex_iterable, batch_size=batch_size, drop_last_batch=drop_last_batch
)
if self._shuffling:
ex_iterable = ex_iterable.shuffle_data_sources(self._effective_generator())
else:
ex_iterable = ex_iterable
if self._distributed:
rank = self._distributed.rank
world_size = self._distributed.world_size
if ex_iterable.n_shards % world_size == 0:
if self._is_main_process():
n_shards_per_node = ex_iterable.n_shards // world_size
plural = "s" if n_shards_per_node > 1 else ""
logger.info(
f"Assigning {n_shards_per_node} shard{plural} (or data source{plural}) of the dataset to each node."
)
ex_iterable = ex_iterable.shard_data_sources(rank, world_size)
else:
if self._is_main_process():
logger.info(
f"Assigning 1 out of {world_size} examples of the dataset to each node. The others are skipped during the iteration."
)
logger.info(
f"It is more optimized to distribute the dataset shards (or data sources) across nodes. "
f"You can do that by using a dataset with number of shards that is a factor of world_size={world_size}. "
f"The current dataset has {ex_iterable.n_shards} which is not a factor of {world_size}"
)
ex_iterable = StepExamplesIterable(ex_iterable, step=world_size, offset=rank)
self._state_dict = ex_iterable._init_state_dict()
if self._starting_state_dict:
ex_iterable.load_state_dict(self._starting_state_dict)
return ex_iterable
def __iter__(self):
if "torch" in sys.modules:
import torch.utils.data
worker_info = torch.utils.data.get_worker_info()
if isinstance(self, torch.utils.data.IterableDataset) and worker_info is not None:
# We're a torch.utils.data.IterableDataset in a PyTorch worker process
yield from self._iter_pytorch()
return
ex_iterable = self._prepare_ex_iterable_for_iteration()
if self._formatting:
formatter = get_formatter(self._formatting.format_type, features=self.features)
format_dict = (
formatter.recursive_tensorize if isinstance(formatter, TensorFormatter) else cast_to_python_objects
)
else:
format_dict = None
if self._formatting and (ex_iterable.iter_arrow or self._formatting.format_type == "arrow"):
if ex_iterable.iter_arrow:
iterator = ex_iterable.iter_arrow()
else:
iterator = _convert_to_arrow(ex_iterable, batch_size=1)
for key, pa_table in iterator:
yield formatter.format_row(pa_table)
return
for key, example in ex_iterable:
if self.features:
# `IterableDataset` automatically fills missing columns with None.
# This is done with `_apply_feature_types_on_example`.
example = _apply_feature_types_on_example(
example, self.features, token_per_repo_id=self._token_per_repo_id
)
yield format_dict(example) if format_dict else example
def iter(self, batch_size: int, drop_last_batch: bool = False):
"""Iterate through the batches of size `batch_size`.
Args:
batch_size (:obj:`int`): size of each batch to yield.
drop_last_batch (:obj:`bool`, default `False`): Whether a last batch smaller than the batch_size should be
dropped
"""
if self._formatting:
formatter = get_formatter(self._formatting.format_type, features=self.features)
format_dict = (
formatter.recursive_tensorize if isinstance(formatter, TensorFormatter) else cast_to_python_objects
)
else:
format_dict = None
ex_iterable = self._prepare_ex_iterable_for_iteration(batch_size=batch_size, drop_last_batch=drop_last_batch)
if self._formatting and (ex_iterable.iter_arrow or self._formatting == "arrow"):
if ex_iterable.iter_arrow:
iterator = ex_iterable.iter_arrow()
else:
iterator = _convert_to_arrow(ex_iterable, batch_size=batch_size, drop_last_batch=drop_last_batch)
for key, pa_table in iterator:
yield formatter.format_batch(pa_table)
return
iterator = iter(ex_iterable)
for key, example in iterator:
# If batched, first build the batch
examples = [example] + [example for key, example in islice(iterator, batch_size - 1)]
if drop_last_batch and len(examples) < batch_size: # ignore last batch
return
batch = _examples_to_batch(examples)
if self.features:
# `IterableDataset` automatically fills missing columns with None.
# This is done with `_apply_feature_types_on_batch`.
batch = _apply_feature_types_on_batch(batch, self.features, token_per_repo_id=self._token_per_repo_id)
yield format_dict(batch) if format_dict else batch
@staticmethod
def from_generator(
generator: Callable,
features: Optional[Features] = None,
gen_kwargs: Optional[dict] = None,
split: NamedSplit = Split.TRAIN,
) -> "IterableDataset":
"""Create an Iterable Dataset from a generator.
Args:
generator (`Callable`):
A generator function that `yields` examples.
features (`Features`, *optional*):
Dataset features.
gen_kwargs(`dict`, *optional*):
Keyword arguments to be passed to the `generator` callable.
You can define a sharded iterable dataset by passing the list of shards in `gen_kwargs`.
This can be used to improve shuffling and when iterating over the dataset with multiple workers.
split ([`NamedSplit`], defaults to `Split.TRAIN`):
Split name to be assigned to the dataset.
<Added version="2.21.0"/>
Returns:
`IterableDataset`
Example:
```py
>>> def gen():
... yield {"text": "Good", "label": 0}
... yield {"text": "Bad", "label": 1}
...
>>> ds = IterableDataset.from_generator(gen)
```
```py
>>> def gen(shards):
... for shard in shards:
... with open(shard) as f:
... for line in f:
... yield {"line": line}
...
>>> shards = [f"data{i}.txt" for i in range(32)]
>>> ds = IterableDataset.from_generator(gen, gen_kwargs={"shards": shards})
>>> ds = ds.shuffle(seed=42, buffer_size=10_000) # shuffles the shards order + uses a shuffle buffer
>>> from torch.utils.data import DataLoader
>>> dataloader = DataLoader(ds.with_format("torch"), num_workers=4) # give each worker a subset of 32/4=8 shards
```
"""
from .io.generator import GeneratorDatasetInputStream
return GeneratorDatasetInputStream(
generator=generator, features=features, gen_kwargs=gen_kwargs, streaming=True, split=split
).read()
@staticmethod
def from_spark(
df: "pyspark.sql.DataFrame",
split: Optional[NamedSplit] = None,
features: Optional[Features] = None,
**kwargs,
) -> "IterableDataset":
"""Create an IterableDataset from Spark DataFrame. The dataset is streamed to the driver in batches.
Args:
df (`pyspark.sql.DataFrame`):
The DataFrame containing the desired data.
split (`NamedSplit`, *optional*):
Split name to be assigned to the dataset.
features (`Features`, *optional*):
Dataset features.
Returns:
[`IterableDataset`]
Example:
```py
>>> df = spark.createDataFrame(
>>> data=[[1, "Elia"], [2, "Teo"], [3, "Fang"]],
>>> columns=["id", "name"],
>>> )
>>> ds = IterableDataset.from_spark(df)
```
"""
from .io.spark import SparkDatasetReader
if sys.platform == "win32":
raise EnvironmentError("IterableDataset.from_spark is not currently supported on Windows")
return SparkDatasetReader(
df,
split=split,
features=features,
streaming=True,
**kwargs,
).read()
@staticmethod
def from_file(filename: str) -> "IterableDataset":
"""Instantiate a IterableDataset from Arrow table at filename.
Args:
filename (`str`):
File name of the dataset.
Returns:
[`IterableDataset`]
"""
pa_table_schema = read_schema_from_file(filename)
inferred_features = Features.from_arrow_schema(pa_table_schema)
ex_iterable = ArrowExamplesIterable(Dataset._generate_tables_from_cache_file, kwargs={"filename": filename})
return IterableDataset(ex_iterable=ex_iterable, info=DatasetInfo(features=inferred_features))
def with_format(
self,
type: Optional[str] = None,
) -> "IterableDataset":
"""
Return a dataset with the specified format.
Supported formats: "arrow", or None for regular python objects.
The other formats are currently not implemented.
Args:
type (`str`, optional, default None): if set to "torch", the returned dataset
will be a subclass of torch.utils.data.IterableDataset to be used in a DataLoader
"""
type = get_format_type_from_alias(type)
# TODO(QL): add format_kwargs
# TODO(QL): add format_columns and return_all_columns
# TODO(QL): add pandas format
return IterableDataset(
ex_iterable=self._ex_iterable,
info=self._info.copy(),
split=self._split,
formatting=FormattingConfig(format_type=type),
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def map(
self,
function: Optional[Callable] = None,
with_indices: bool = False,
input_columns: Optional[Union[str, List[str]]] = None,
batched: bool = False,
batch_size: Optional[int] = 1000,
drop_last_batch: bool = False,
remove_columns: Optional[Union[str, List[str]]] = None,
features: Optional[Features] = None,
fn_kwargs: Optional[dict] = None,
) -> "IterableDataset":
"""
Apply a function to all the examples in the iterable dataset (individually or in batches) and update them.
If your function returns a column that already exists, then it overwrites it.
The function is applied on-the-fly on the examples when iterating over the dataset.
You can specify whether the function should be batched or not with the `batched` parameter:
- If batched is `False`, then the function takes 1 example in and should return 1 example.
An example is a dictionary, e.g. `{"text": "Hello there !"}`.
- If batched is `True` and `batch_size` is 1, then the function takes a batch of 1 example as input and can return a batch with 1 or more examples.
A batch is a dictionary, e.g. a batch of 1 example is {"text": ["Hello there !"]}.
- If batched is `True` and `batch_size` is `n` > 1, then the function takes a batch of `n` examples as input and can return a batch with `n` examples, or with an arbitrary number of examples.
Note that the last batch may have less than `n` examples.
A batch is a dictionary, e.g. a batch of `n` examples is `{"text": ["Hello there !"] * n}`.
Args:
function (`Callable`, *optional*, defaults to `None`):
Function applied on-the-fly on the examples when you iterate on the dataset.
It must have one of the following signatures:
- `function(example: Dict[str, Any]) -> Dict[str, Any]` if `batched=False` and `with_indices=False`
- `function(example: Dict[str, Any], idx: int) -> Dict[str, Any]` if `batched=False` and `with_indices=True`
- `function(batch: Dict[str, List]) -> Dict[str, List]` if `batched=True` and `with_indices=False`
- `function(batch: Dict[str, List], indices: List[int]) -> Dict[str, List]` if `batched=True` and `with_indices=True`
For advanced usage, the function can also return a `pyarrow.Table`.
Moreover if your function returns nothing (`None`), then `map` will run your function and return the dataset unchanged.
If no function is provided, default to identity function: `lambda x: x`.
with_indices (`bool`, defaults to `False`):
Provide example indices to `function`. Note that in this case the signature of `function` should be `def function(example, idx[, rank]): ...`.
input_columns (`Optional[Union[str, List[str]]]`, defaults to `None`):
The columns to be passed into `function`
as positional arguments. If `None`, a dict mapping to all formatted columns is passed as one argument.
batched (`bool`, defaults to `False`):
Provide batch of examples to `function`.
batch_size (`int`, *optional*, defaults to `1000`):
Number of examples per batch provided to `function` if `batched=True`.
`batch_size <= 0` or `batch_size == None` then provide the full dataset as a single batch to `function`.
drop_last_batch (`bool`, defaults to `False`):
Whether a last batch smaller than the batch_size should be
dropped instead of being processed by the function.
remove_columns (`[List[str]]`, *optional*, defaults to `None`):
Remove a selection of columns while doing the mapping.
Columns will be removed before updating the examples with the output of `function`, i.e. if `function` is adding
columns with names in `remove_columns`, these columns will be kept.
features (`[Features]`, *optional*, defaults to `None`):
Feature types of the resulting dataset.
fn_kwargs (`Dict`, *optional*, default `None`):
Keyword arguments to be passed to `function`.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> def add_prefix(example):
... example["text"] = "Review: " + example["text"]
... return example
>>> ds = ds.map(add_prefix)
>>> list(ds.take(3))
[{'label': 1,
'text': 'Review: the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'},
{'label': 1,
'text': 'Review: the gorgeously elaborate continuation of " the lord of the rings " trilogy is so huge that a column of words cannot adequately describe co-writer/director peter jackson\'s expanded vision of j . r . r . tolkien\'s middle-earth .'},
{'label': 1, 'text': 'Review: effective but too-tepid biopic'}]
```
"""
if isinstance(input_columns, str):
input_columns = [input_columns]
if isinstance(remove_columns, str):
remove_columns = [remove_columns]
if function is None:
function = identity_func
if fn_kwargs is None:
fn_kwargs = {}
ex_iterable = (
TypedExamplesIterable(self._ex_iterable, self._info.features, token_per_repo_id=self._token_per_repo_id)
if self._info.features is not None
else self._ex_iterable
)
ex_iterable = (
RebatchedArrowExamplesIterable(ex_iterable, batch_size=batch_size, drop_last_batch=drop_last_batch)
if self._formatting and self._formatting.format_type == "arrow"
else ex_iterable
)
ex_iterable = MappedExamplesIterable(
ex_iterable,
function=function,
with_indices=with_indices,
input_columns=input_columns,
batched=batched,
batch_size=batch_size,
drop_last_batch=drop_last_batch,
remove_columns=remove_columns,
fn_kwargs=fn_kwargs,
formatting=self._formatting,
)
info = self.info.copy()
info.features = features
return IterableDataset(
ex_iterable=ex_iterable,
info=info,
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def filter(
self,
function: Optional[Callable] = None,
with_indices=False,
input_columns: Optional[Union[str, List[str]]] = None,
batched: bool = False,
batch_size: Optional[int] = 1000,
fn_kwargs: Optional[dict] = None,
) -> "IterableDataset":
"""Apply a filter function to all the elements so that the dataset only includes examples according to the filter function.
The filtering is done on-the-fly when iterating over the dataset.
Args:
function (`Callable`):
Callable with one of the following signatures:
- `function(example: Dict[str, Any]) -> bool` if `with_indices=False, batched=False`
- `function(example: Dict[str, Any], indices: int) -> bool` if `with_indices=True, batched=False`
- `function(example: Dict[str, List]) -> List[bool]` if `with_indices=False, batched=True`
- `function(example: Dict[str, List], indices: List[int]) -> List[bool]` if `with_indices=True, batched=True`
If no function is provided, defaults to an always True function: `lambda x: True`.
with_indices (`bool`, defaults to `False`):
Provide example indices to `function`. Note that in this case the signature of `function` should be `def function(example, idx): ...`.
input_columns (`str` or `List[str]`, *optional*):
The columns to be passed into `function` as
positional arguments. If `None`, a dict mapping to all formatted columns is passed as one argument.
batched (`bool`, defaults to `False`):
Provide batch of examples to `function`.
batch_size (`int`, *optional*, default `1000`):
Number of examples per batch provided to `function` if `batched=True`.
fn_kwargs (`Dict`, *optional*, default `None`):
Keyword arguments to be passed to `function`.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> ds = ds.filter(lambda x: x["label"] == 0)
>>> list(ds.take(3))
[{'label': 0, 'movie_review': 'simplistic , silly and tedious .'},
{'label': 0,
'movie_review': "it's so laddish and juvenile , only teenage boys could possibly find it funny ."},
{'label': 0,
'movie_review': 'exploitative and largely devoid of the depth or sophistication that would make watching such a graphic treatment of the crimes bearable .'}]
```
"""
if isinstance(input_columns, str):
input_columns = [input_columns]
# TODO(QL): keep the features (right now if we keep it it would call decode_example again on an already decoded example)
info = copy.deepcopy(self._info)
info.features = None
# We need the examples to be decoded for certain feature types like Image or Audio, so we use TypedExamplesIterable here
ex_iterable = FilteredExamplesIterable(
TypedExamplesIterable(self._ex_iterable, self._info.features, token_per_repo_id=self._token_per_repo_id)
if self._info.features is not None
else self._ex_iterable,
function=function,
with_indices=with_indices,
input_columns=input_columns,
batched=batched,
batch_size=batch_size,
fn_kwargs=fn_kwargs,
formatting=self._formatting,
)
return IterableDataset(
ex_iterable=ex_iterable,
info=info,
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def shuffle(
self, seed=None, generator: Optional[np.random.Generator] = None, buffer_size: int = 1000
) -> "IterableDataset":
"""
Randomly shuffles the elements of this dataset.
This dataset fills a buffer with `buffer_size` elements, then randomly samples elements from this buffer,
replacing the selected elements with new elements. For perfect shuffling, a buffer size greater than or
equal to the full size of the dataset is required.
For instance, if your dataset contains 10,000 elements but `buffer_size` is set to 1000, then `shuffle` will
initially select a random element from only the first 1000 elements in the buffer. Once an element is
selected, its space in the buffer is replaced by the next (i.e. 1,001-st) element,
maintaining the 1000 element buffer.
If the dataset is made of several shards, it also does shuffle the order of the shards.
However if the order has been fixed by using [`~datasets.IterableDataset.skip`] or [`~datasets.IterableDataset.take`]
then the order of the shards is kept unchanged.
Args:
seed (`int`, *optional*, defaults to `None`):
Random seed that will be used to shuffle the dataset.
It is used to sample from the shuffle buffer and also to shuffle the data shards.
generator (`numpy.random.Generator`, *optional*):
Numpy random Generator to use to compute the permutation of the dataset rows.
If `generator=None` (default), uses `np.random.default_rng` (the default BitGenerator (PCG64) of NumPy).
buffer_size (`int`, defaults to `1000`):
Size of the buffer.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> list(ds.take(3))
[{'label': 1,
'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'},
{'label': 1,
'text': 'the gorgeously elaborate continuation of " the lord of the rings " trilogy is so huge that a column of words cannot adequately describe co-writer/director peter jackson\'s expanded vision of j . r . r . tolkien\'s middle-earth .'},
{'label': 1, 'text': 'effective but too-tepid biopic'}]
>>> shuffled_ds = ds.shuffle(seed=42)
>>> list(shuffled_ds.take(3))
[{'label': 1,
'text': "a sports movie with action that's exciting on the field and a story you care about off it ."},
{'label': 1,
'text': 'at its best , the good girl is a refreshingly adult take on adultery . . .'},
{'label': 1,
'text': "sam jones became a very lucky filmmaker the day wilco got dropped from their record label , proving that one man's ruin may be another's fortune ."}]
```
"""
if generator is None:
generator = np.random.default_rng(seed)
else:
generator = deepcopy(generator)
shuffling = ShufflingConfig(generator=generator, _original_seed=seed)
return IterableDataset(
ex_iterable=BufferShuffledExamplesIterable(
self._ex_iterable, buffer_size=buffer_size, generator=generator
),
info=self._info.copy(),
split=self._split,
formatting=self._formatting,
shuffling=shuffling,
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def set_epoch(self, epoch: int):
self._epoch += epoch - self._epoch # update torch value in shared memory in-place
def skip(self, n: int) -> "IterableDataset":
"""
Create a new [`IterableDataset`] that skips the first `n` elements.
Args:
n (`int`):
Number of elements to skip.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> list(ds.take(3))
[{'label': 1,
'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'},
{'label': 1,
'text': 'the gorgeously elaborate continuation of " the lord of the rings " trilogy is so huge that a column of words cannot adequately describe co-writer/director peter jackson\'s expanded vision of j . r . r . tolkien\'s middle-earth .'},
{'label': 1, 'text': 'effective but too-tepid biopic'}]
>>> ds = ds.skip(1)
>>> list(ds.take(3))
[{'label': 1,
'text': 'the gorgeously elaborate continuation of " the lord of the rings " trilogy is so huge that a column of words cannot adequately describe co-writer/director peter jackson\'s expanded vision of j . r . r . tolkien\'s middle-earth .'},
{'label': 1, 'text': 'effective but too-tepid biopic'},
{'label': 1,
'text': 'if you sometimes like to go to the movies to have fun , wasabi is a good place to start .'}]
```
"""
ex_iterable = SkipExamplesIterable(
self._ex_iterable,
n,
block_sources_order_when_shuffling=self._shuffling is None,
split_when_sharding=self._distributed is None,
)
return IterableDataset(
ex_iterable=ex_iterable,
info=self._info.copy(),
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def take(self, n: int) -> "IterableDataset":
"""
Create a new [`IterableDataset`] with only the first `n` elements.
Args:
n (`int`):
Number of elements to take.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> small_ds = ds.take(2)
>>> list(small_ds)
[{'label': 1,
'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'},
{'label': 1,
'text': 'the gorgeously elaborate continuation of " the lord of the rings " trilogy is so huge that a column of words cannot adequately describe co-writer/director peter jackson\'s expanded vision of j . r . r . tolkien\'s middle-earth .'}]
```
"""
ex_iterable = TakeExamplesIterable(
self._ex_iterable,
n,
block_sources_order_when_shuffling=self._shuffling is None,
split_when_sharding=self._distributed is None,
)
return IterableDataset(
ex_iterable=ex_iterable,
info=self._info.copy(),
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
@property
def column_names(self) -> Optional[List[str]]:
"""Names of the columns in the dataset.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="validation", streaming=True)
>>> ds.column_names
['text', 'label']
```
"""
return list(self._info.features.keys()) if self._info.features is not None else None
def add_column(self, name: str, column: Union[list, np.array]) -> "IterableDataset":
"""Add column to Dataset.
Args:
name (str): Column name.
column (list or np.array): Column data to be added.
Returns:
`IterableDataset`
"""
return self.map(partial(add_column_fn, name=name, column=column), with_indices=True)
def rename_column(self, original_column_name: str, new_column_name: str) -> "IterableDataset":
"""
Rename a column in the dataset, and move the features associated to the original column under the new column
name.
Args:
original_column_name (`str`):
Name of the column to rename.
new_column_name (`str`):
New name for the column.
Returns:
`IterableDataset`: A copy of the dataset with a renamed column.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> next(iter(ds))
{'label': 1,
'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'}
>>> ds = ds.rename_column("text", "movie_review")
>>> next(iter(ds))
{'label': 1,
'movie_review': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'}
```
"""
return self.rename_columns({original_column_name: new_column_name})
def rename_columns(self, column_mapping: Dict[str, str]) -> "IterableDataset":
"""
Rename several columns in the dataset, and move the features associated to the original columns under
the new column names.
Args:
column_mapping (`Dict[str, str]`): A mapping of columns to rename to their new names
Returns:
`IterableDataset`: A copy of the dataset with renamed columns
"""
original_features = self._info.features.copy() if self._info.features else None
ds_iterable = self.map(
partial(_rename_columns_fn, column_mapping=column_mapping), remove_columns=list(column_mapping)
)
if original_features is not None:
ds_iterable._info.features = Features(
{
column_mapping[col] if col in column_mapping.keys() else col: feature
for col, feature in original_features.items()
}
)
return ds_iterable
def remove_columns(self, column_names: Union[str, List[str]]) -> "IterableDataset":
"""
Remove one or several column(s) in the dataset and the features associated to them.
The removal is done on-the-fly on the examples when iterating over the dataset.
Args:
column_names (`Union[str, List[str]]`):
Name of the column(s) to remove.
Returns:
`IterableDataset`: A copy of the dataset object without the columns to remove.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> next(iter(ds))
{'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .', 'label': 1}
>>> ds = ds.remove_columns("label")
>>> next(iter(ds))
{'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'}
```
"""
original_features = self._info.features.copy() if self._info.features else None
ds_iterable = self.map(remove_columns=column_names)
if original_features is not None:
ds_iterable._info.features = original_features.copy()
for col, _ in original_features.items():
if col in column_names:
del ds_iterable._info.features[col]
return ds_iterable
def select_columns(self, column_names: Union[str, List[str]]) -> "IterableDataset":
"""Select one or several column(s) in the dataset and the features
associated to them. The selection is done on-the-fly on the examples
when iterating over the dataset.
Args:
column_names (`Union[str, List[str]]`):
Name of the column(s) to select.
Returns:
`IterableDataset`: A copy of the dataset object with selected columns.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> next(iter(ds))
{'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .', 'label': 1}
>>> ds = ds.select_columns("text")
>>> next(iter(ds))
{'text': 'the rock is destined to be the 21st century\'s new " conan " and that he\'s going to make a splash even greater than arnold schwarzenegger , jean-claud van damme or steven segal .'}
```
"""
if isinstance(column_names, str):
column_names = [column_names]
if self._info:
info = copy.deepcopy(self._info)
if self._info.features is not None:
missing_columns = set(column_names) - set(self._info.features.keys())
if missing_columns:
raise ValueError(
f"Column name {list(missing_columns)} not in the "
"dataset. Columns in the dataset: "
f"{list(self._info.features.keys())}."
)
info.features = Features({c: info.features[c] for c in column_names})
ex_iterable = SelectColumnsIterable(self._ex_iterable, column_names)
return IterableDataset(
ex_iterable=ex_iterable,
info=info,
split=self._split,
formatting=self._formatting,
shuffling=self._shuffling,
distributed=self._distributed,
token_per_repo_id=self._token_per_repo_id,
)
def cast_column(self, column: str, feature: FeatureType) -> "IterableDataset":
"""Cast column to feature for decoding.
Args:
column (`str`):
Column name.
feature (`Feature`):
Target feature.
Returns:
`IterableDataset`
Example:
```py
>>> from datasets import load_dataset, Audio
>>> ds = load_dataset("PolyAI/minds14", name="en-US", split="train", streaming=True)
>>> ds.features
{'audio': Audio(sampling_rate=8000, mono=True, decode=True, id=None),
'english_transcription': Value(dtype='string', id=None),
'intent_class': ClassLabel(num_classes=14, names=['abroad', 'address', 'app_error', 'atm_limit', 'balance', 'business_loan', 'card_issues', 'cash_deposit', 'direct_debit', 'freeze', 'high_value_payment', 'joint_account', 'latest_transactions', 'pay_bill'], id=None),
'lang_id': ClassLabel(num_classes=14, names=['cs-CZ', 'de-DE', 'en-AU', 'en-GB', 'en-US', 'es-ES', 'fr-FR', 'it-IT', 'ko-KR', 'nl-NL', 'pl-PL', 'pt-PT', 'ru-RU', 'zh-CN'], id=None),
'path': Value(dtype='string', id=None),
'transcription': Value(dtype='string', id=None)}
>>> ds = ds.cast_column("audio", Audio(sampling_rate=16000))
>>> ds.features
{'audio': Audio(sampling_rate=16000, mono=True, decode=True, id=None),
'english_transcription': Value(dtype='string', id=None),
'intent_class': ClassLabel(num_classes=14, names=['abroad', 'address', 'app_error', 'atm_limit', 'balance', 'business_loan', 'card_issues', 'cash_deposit', 'direct_debit', 'freeze', 'high_value_payment', 'joint_account', 'latest_transactions', 'pay_bill'], id=None),
'lang_id': ClassLabel(num_classes=14, names=['cs-CZ', 'de-DE', 'en-AU', 'en-GB', 'en-US', 'es-ES', 'fr-FR', 'it-IT', 'ko-KR', 'nl-NL', 'pl-PL', 'pt-PT', 'ru-RU', 'zh-CN'], id=None),
'path': Value(dtype='string', id=None),
'transcription': Value(dtype='string', id=None)}
```
"""
info = self._info.copy()
info.features[column] = feature
return IterableDataset(
ex_iterable=self._ex_iterable,
info=info,
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def cast(
self,
features: Features,
) -> "IterableDataset":
"""
Cast the dataset to a new set of features.
Args:
features ([`Features`]):
New features to cast the dataset to.
The name of the fields in the features must match the current column names.
The type of the data must also be convertible from one type to the other.
For non-trivial conversion, e.g. `string` <-> `ClassLabel` you should use [`~Dataset.map`] to update the Dataset.
Returns:
`IterableDataset`: A copy of the dataset with casted features.
Example:
```py
>>> from datasets import load_dataset
>>> ds = load_dataset("rotten_tomatoes", split="train", streaming=True)
>>> ds.features
{'label': ClassLabel(num_classes=2, names=['neg', 'pos'], id=None),
'text': Value(dtype='string', id=None)}
>>> new_features = ds.features.copy()
>>> new_features["label"] = ClassLabel(names=["bad", "good"])
>>> new_features["text"] = Value("large_string")
>>> ds = ds.cast(new_features)
>>> ds.features
{'label': ClassLabel(num_classes=2, names=['bad', 'good'], id=None),
'text': Value(dtype='large_string', id=None)}
```
"""
info = self._info.copy()
info.features = features
return IterableDataset(
ex_iterable=self._ex_iterable,
info=info,
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def _step(self, step: int, offset: int) -> "IterableDataset":
ex_iterable = StepExamplesIterable(self._ex_iterable, step=step, offset=offset)
return IterableDataset(
ex_iterable=ex_iterable,
info=self._info.copy(),
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def _resolve_features(self):
if self.features is not None:
return self
elif isinstance(self._ex_iterable, TypedExamplesIterable):
features = self._ex_iterable.features
else:
features = _infer_features_from_batch(self.with_format(None)._head())
info = self.info.copy()
info.features = features
return IterableDataset(
ex_iterable=self._ex_iterable,
info=info,
split=self._split,
formatting=self._formatting,
shuffling=copy.deepcopy(self._shuffling),
distributed=copy.deepcopy(self._distributed),
token_per_repo_id=self._token_per_repo_id,
)
def batch(self, batch_size: int, drop_last_batch: bool = False) -> "IterableDataset":
"""
Group samples from the dataset into batches.
Args:
batch_size (`int`): The number of samples in each batch.
drop_last_batch (`bool`, defaults to `False`): Whether to drop the last incomplete batch.
Example:
```py
>>> ds = load_dataset("some_dataset", streaming=True)
>>> batched_ds = ds.batch(batch_size=32)
```
"""
def batch_fn(unbatched):
return {k: [v] for k, v in unbatched.items()}
return self.map(batch_fn, batched=True, batch_size=batch_size, drop_last_batch=drop_last_batch)
def _concatenate_iterable_datasets(
dsets: List[IterableDataset],
info: Optional[DatasetInfo] = None,
split: Optional[NamedSplit] = None,
axis: int = 0,
) -> IterableDataset:
"""
Converts a list of `IterableDataset` with the same schema into a single `IterableDataset`.
Missing data are filled with None values.
<Added version="2.4.0"/>
Args:
dsets (`List[datasets.IterableDataset]`): List of Datasets to concatenate.
info (`DatasetInfo`, optional): Dataset information, like description, citation, etc.
split (`NamedSplit`, optional): Name of the dataset split.
axis (``{0, 1}``, default ``0``, meaning over rows):
Axis to concatenate over, where ``0`` means over rows (vertically) and ``1`` means over columns
(horizontally).
*New in version 1.6.0*
Example:
```py
>>> ds3 = _concatenate_iterable_datasets([ds1, ds2])
```
"""
dsets = [d._resolve_features() for d in dsets]
# Perform checks (and a potentional cast if axis=0)
if axis == 0:
_check_if_features_can_be_aligned([dset.features for dset in dsets])
else:
_check_column_names([col_name for dset in dsets for col_name in dset.features])
# TODO: improve this to account for a mix of ClassLabel and Value for example
# right now it would keep the type of the first dataset in the list
features = Features(
{k: v for features in _align_features([dset.features for dset in dsets]) for k, v in features.items()}
)
ex_iterables = [copy.deepcopy(d._ex_iterable) for d in dsets]
if axis == 0:
ex_iterable = VerticallyConcatenatedMultiSourcesExamplesIterable(ex_iterables)
else:
ex_iterable = HorizontallyConcatenatedMultiSourcesExamplesIterable(ex_iterables)
# Set new info - we update the features
# setting the features also ensures to fill missing columns with None
if info is None:
info = DatasetInfo.from_merge([d.info for d in dsets])
else:
info = info.copy()
info.features = features
# Get all the auth tokens per repository - in case the datasets come from different private repositories
token_per_repo_id = {repo_id: token for dataset in dsets for repo_id, token in dataset._token_per_repo_id.items()}
# Return new daset
return IterableDataset(ex_iterable=ex_iterable, info=info, split=split, token_per_repo_id=token_per_repo_id)
def _interleave_iterable_datasets(
datasets: List[IterableDataset],
probabilities: Optional[List[float]] = None,
seed: Optional[int] = None,
info: Optional[DatasetInfo] = None,
split: Optional[NamedSplit] = None,
stopping_strategy: Literal["first_exhausted", "all_exhausted"] = "first_exhausted",
) -> IterableDataset:
"""
Interleave several iterable datasets (sources) into a single iterable dataset.
The new iterable dataset alternates between the sources to yield examples.
If `probabilities = None` (default) the iterable dataset will cycles through the sources in order for each next example in the iteration.
If `probabilities` is not `None, the iterable dataset will sample a random source according to the provided probabilities for each next examples in the iteration.
<Added version="2.4.0"/>
Args:
datasets (`List[IterableDataset]`): list of datasets to interleave
probabilities (`List[float]`, optional, default None): If specified, the new iterable dataset samples
examples from one source at a time according to these probabilities.
seed (`int`, optional, default None): The random seed used to choose a source for each example.
stopping_strategy (`str`, defaults to `first_exhausted`):
Two strategies are proposed right now.
By default, `first_exhausted` is an undersampling strategy, i.e the dataset construction is stopped as soon as one dataset has ran out of samples.
If the strategy is `all_exhausted`, we use an oversampling strategy, i.e the dataset construction is stopped as soon as every samples of every dataset has been added at least once.
Note that if the strategy is `all_exhausted`, the interleaved dataset size can get enormous:
- with no probabilities, the resulting dataset will have max_length_datasets*nb_dataset samples.
- with given probabilities, the resulting dataset will have more samples if some datasets have really low probability of visiting.
Output:
`datasets.IterableDataset`
"""
datasets = [d._resolve_features() for d in datasets]
# Perform checks
_check_if_features_can_be_aligned([dset.features for dset in datasets])
# TODO: improve this to account for a mix of ClassLabel and Value for example
# right now it would keep the type of the first dataset in the list
features = Features(
{k: v for features in _align_features([dset.features for dset in datasets]) for k, v in features.items()}
)
ex_iterables = [copy.deepcopy(d._ex_iterable) for d in datasets]
# Use cycling or random cycling of sources
if probabilities is None:
ex_iterable = CyclingMultiSourcesExamplesIterable(ex_iterables, stopping_strategy=stopping_strategy)
else:
generator = np.random.default_rng(seed)
ex_iterable = RandomlyCyclingMultiSourcesExamplesIterable(
ex_iterables, generator=generator, probabilities=probabilities, stopping_strategy=stopping_strategy
)
# Set new info - we update the features
# setting the features also ensures to fill missing columns with None
if info is None:
info = DatasetInfo.from_merge([d.info for d in datasets])
else:
info = info.copy()
info.features = features
# Get all the auth tokens per repository - in case the datasets come from different private repositories
token_per_repo_id = {
repo_id: token for dataset in datasets for repo_id, token in dataset._token_per_repo_id.items()
}
# Return new daset
return IterableDataset(ex_iterable=ex_iterable, info=info, split=split, token_per_repo_id=token_per_repo_id)
def _split_by_node_iterable_dataset(dataset: IterableDataset, rank: int, world_size: int) -> IterableDataset:
"""
Split an iterable dataset for the node at rank `rank` in a pool of nodes of size `world_size`.
If the dataset has a number of shards that is a factor of `world_size` (i.e. if `dataset.n_shards % world_size == 0`),
then the shards are evenly assigned across the nodes, which is the most optimized.
Otherwise, each node keeps 1 example out of `world_size`, skipping the other examples.
Args:
dataset ([`IterableDataset`]):
The iterable dataset to split by node.
rank (`int`):
Rank of the current node.
world_size (`int`):
Total number of nodes.
Returns:
[`IterableDataset`]: The iterable dataset to be used on the node at rank `rank`.
"""
if dataset._distributed:
rank = world_size * dataset._distributed.rank + rank
world_size = world_size * dataset._distributed.world_size
distributed = DistributedConfig(rank=rank, world_size=world_size)
return IterableDataset(
ex_iterable=dataset._ex_iterable,
info=dataset._info.copy(),
split=dataset._split,
formatting=dataset._formatting,
shuffling=copy.deepcopy(dataset._shuffling),
distributed=distributed,
token_per_repo_id=dataset._token_per_repo_id,
)
|
datasets/src/datasets/iterable_dataset.py/0
|
{
"file_path": "datasets/src/datasets/iterable_dataset.py",
"repo_id": "datasets",
"token_count": 61813
}
| 81
|
from dataclasses import dataclass
from typing import Callable, Optional
import datasets
@dataclass
class GeneratorConfig(datasets.BuilderConfig):
generator: Optional[Callable] = None
gen_kwargs: Optional[dict] = None
features: Optional[datasets.Features] = None
split: datasets.NamedSplit = datasets.Split.TRAIN
def __post_init__(self):
super().__post_init__()
if self.generator is None:
raise ValueError("generator must be specified")
if self.gen_kwargs is None:
self.gen_kwargs = {}
class Generator(datasets.GeneratorBasedBuilder):
BUILDER_CONFIG_CLASS = GeneratorConfig
def _info(self):
return datasets.DatasetInfo(features=self.config.features)
def _split_generators(self, dl_manager):
return [datasets.SplitGenerator(name=self.config.split, gen_kwargs=self.config.gen_kwargs)]
def _generate_examples(self, **gen_kwargs):
for idx, ex in enumerate(self.config.generator(**gen_kwargs)):
yield idx, ex
|
datasets/src/datasets/packaged_modules/generator/generator.py/0
|
{
"file_path": "datasets/src/datasets/packaged_modules/generator/generator.py",
"repo_id": "datasets",
"token_count": 396
}
| 82
|
#
# Copyright (c) 2017-2021 NVIDIA CORPORATION. All rights reserved.
# This file coems from the WebDataset library.
# See the LICENSE file for licensing terms (BSD-style).
#
"""
Binary tensor encodings for PyTorch and NumPy.
This defines efficient binary encodings for tensors. The format is 8 byte
aligned and can be used directly for computations when transmitted, say,
via RDMA. The format is supported by WebDataset with the `.ten` filename
extension. It is also used by Tensorcom, Tensorcom RDMA, and can be used
for fast tensor storage with LMDB and in disk files (which can be memory
mapped)
Data is encoded as a series of chunks:
- magic number (int64)
- length in bytes (int64)
- bytes (multiple of 64 bytes long)
Arrays are a header chunk followed by a data chunk.
Header chunks have the following structure:
- dtype (int64)
- 8 byte array name
- ndim (int64)
- dim[0]
- dim[1]
- ...
"""
import struct
import sys
import numpy as np
def bytelen(a):
"""Determine the length of a in bytes."""
if hasattr(a, "nbytes"):
return a.nbytes
elif isinstance(a, (bytearray, bytes)):
return len(a)
else:
raise ValueError(a, "cannot determine nbytes")
def bytedata(a):
"""Return a the raw data corresponding to a."""
if isinstance(a, (bytearray, bytes, memoryview)):
return a
elif hasattr(a, "data"):
return a.data
else:
raise ValueError(a, "cannot return bytedata")
# tables for converting between long/short NumPy dtypes
long_to_short = """
float16 f2
float32 f4
float64 f8
int8 i1
int16 i2
int32 i4
int64 i8
uint8 u1
uint16 u2
unit32 u4
uint64 u8
""".strip()
long_to_short = [x.split() for x in long_to_short.split("\n")]
long_to_short = {x[0]: x[1] for x in long_to_short}
short_to_long = {v: k for k, v in long_to_short.items()}
def check_acceptable_input_type(data, allow64):
"""Check that the data has an acceptable type for tensor encoding.
:param data: array
:param allow64: allow 64 bit types
"""
for a in data:
if a.dtype.name not in long_to_short:
raise ValueError("unsupported dataypte")
if not allow64 and a.dtype.name not in ["float64", "int64", "uint64"]:
raise ValueError("64 bit datatypes not allowed unless explicitly enabled")
def str64(s):
"""Convert a string to an int64."""
s = s + "\0" * (8 - len(s))
s = s.encode("ascii")
return struct.unpack("@q", s)[0]
def unstr64(i):
"""Convert an int64 to a string."""
b = struct.pack("@q", i)
return b.decode("ascii").strip("\0")
def check_infos(data, infos, required_infos=None):
"""Verify the info strings."""
if required_infos is False or required_infos is None:
return data
if required_infos is True:
return data, infos
if not isinstance(required_infos, (tuple, list)):
raise ValueError("required_infos must be tuple or list")
for required, actual in zip(required_infos, infos):
raise ValueError(f"actual info {actual} doesn't match required info {required}")
return data
def encode_header(a, info=""):
"""Encode an array header as a byte array."""
if a.ndim >= 10:
raise ValueError("too many dimensions")
if a.nbytes != np.prod(a.shape) * a.itemsize:
raise ValueError("mismatch between size and shape")
if a.dtype.name not in long_to_short:
raise ValueError("unsupported array type")
header = [str64(long_to_short[a.dtype.name]), str64(info), len(a.shape)] + list(a.shape)
return bytedata(np.array(header, dtype="i8"))
def decode_header(h):
"""Decode a byte array into an array header."""
h = np.frombuffer(h, dtype="i8")
if unstr64(h[0]) not in short_to_long:
raise ValueError("unsupported array type")
dtype = np.dtype(short_to_long[unstr64(h[0])])
info = unstr64(h[1])
rank = int(h[2])
shape = tuple(h[3 : 3 + rank])
return shape, dtype, info
def encode_list(l, infos=None): # noqa: E741
"""Given a list of arrays, encode them into a list of byte arrays."""
if infos is None:
infos = [""]
else:
if len(l) != len(infos):
raise ValueError(f"length of list {l} must muatch length of infos {infos}")
result = []
for i, a in enumerate(l):
header = encode_header(a, infos[i % len(infos)])
result += [header, bytedata(a)]
return result
def decode_list(l, infos=False): # noqa: E741
"""Given a list of byte arrays, decode them into arrays."""
result = []
infos0 = []
for header, data in zip(l[::2], l[1::2]):
shape, dtype, info = decode_header(header)
a = np.frombuffer(data, dtype=dtype, count=np.prod(shape)).reshape(*shape)
result += [a]
infos0 += [info]
return check_infos(result, infos0, infos)
magic_str = "~TenBin~"
magic = str64(magic_str)
magic_bytes = unstr64(magic).encode("ascii")
def roundup(n, k=64):
"""Round up to the next multiple of 64."""
return k * ((n + k - 1) // k)
def encode_chunks(l): # noqa: E741
"""Encode a list of chunks into a single byte array, with lengths and magics.."""
size = sum(16 + roundup(b.nbytes) for b in l)
result = bytearray(size)
offset = 0
for b in l:
result[offset : offset + 8] = magic_bytes
offset += 8
result[offset : offset + 8] = struct.pack("@q", b.nbytes)
offset += 8
result[offset : offset + bytelen(b)] = b
offset += roundup(bytelen(b))
return result
def decode_chunks(buf):
"""Decode a byte array into a list of chunks."""
result = []
offset = 0
total = bytelen(buf)
while offset < total:
if magic_bytes != buf[offset : offset + 8]:
raise ValueError("magic bytes mismatch")
offset += 8
nbytes = struct.unpack("@q", buf[offset : offset + 8])[0]
offset += 8
b = buf[offset : offset + nbytes]
offset += roundup(nbytes)
result.append(b)
return result
def encode_buffer(l, infos=None): # noqa: E741
"""Encode a list of arrays into a single byte array."""
if not isinstance(l, list):
raise ValueError("requires list")
return encode_chunks(encode_list(l, infos=infos))
def decode_buffer(buf, infos=False):
"""Decode a byte array into a list of arrays."""
return decode_list(decode_chunks(buf), infos=infos)
def write_chunk(stream, buf):
"""Write a byte chunk to the stream with magics, length, and padding."""
nbytes = bytelen(buf)
stream.write(magic_bytes)
stream.write(struct.pack("@q", nbytes))
stream.write(bytedata(buf))
padding = roundup(nbytes) - nbytes
if padding > 0:
stream.write(b"\0" * padding)
def read_chunk(stream):
"""Read a byte chunk from a stream with magics, length, and padding."""
magic = stream.read(8)
if magic == b"":
return None
if magic != magic_bytes:
raise ValueError("magic number does not match")
nbytes = stream.read(8)
nbytes = struct.unpack("@q", nbytes)[0]
if nbytes < 0:
raise ValueError("negative nbytes")
data = stream.read(nbytes)
padding = roundup(nbytes) - nbytes
if padding > 0:
stream.read(padding)
return data
def write(stream, l, infos=None): # noqa: E741
"""Write a list of arrays to a stream, with magics, length, and padding."""
for chunk in encode_list(l, infos=infos):
write_chunk(stream, chunk)
def read(stream, n=sys.maxsize, infos=False):
"""Read a list of arrays from a stream, with magics, length, and padding."""
chunks = []
for _ in range(n):
header = read_chunk(stream)
if header is None:
break
data = read_chunk(stream)
if data is None:
raise ValueError("premature EOF")
chunks += [header, data]
return decode_list(chunks, infos=infos)
def save(fname, *args, infos=None, nocheck=False):
"""Save a list of arrays to a file, with magics, length, and padding."""
if not nocheck and not fname.endswith(".ten"):
raise ValueError("file name should end in .ten")
with open(fname, "wb") as stream:
write(stream, args, infos=infos)
def load(fname, infos=False, nocheck=False):
"""Read a list of arrays from a file, with magics, length, and padding."""
if not nocheck and not fname.endswith(".ten"):
raise ValueError("file name should end in .ten")
with open(fname, "rb") as stream:
return read(stream, infos=infos)
|
datasets/src/datasets/packaged_modules/webdataset/_tenbin.py/0
|
{
"file_path": "datasets/src/datasets/packaged_modules/webdataset/_tenbin.py",
"repo_id": "datasets",
"token_count": 3409
}
| 83
|
"""
Utilities for working with the local dataset cache.
This file is adapted from the AllenNLP library at https://github.com/allenai/allennlp
Copyright by the AllenNLP authors.
"""
import asyncio
import glob
import io
import json
import multiprocessing
import os
import posixpath
import re
import shutil
import sys
import tarfile
import time
import xml.dom.minidom
import zipfile
from contextlib import contextmanager
from io import BytesIO
from itertools import chain
from pathlib import Path, PurePosixPath
from typing import Any, Dict, Generator, List, Optional, Tuple, TypeVar, Union
from unittest.mock import patch
from urllib.parse import urlparse
from xml.etree import ElementTree as ET
import aiohttp.client_exceptions
import fsspec
import huggingface_hub
import huggingface_hub.errors
import requests
from fsspec.core import strip_protocol, url_to_fs
from fsspec.utils import can_be_local
from huggingface_hub.utils import EntryNotFoundError, get_session, insecure_hashlib
from packaging import version
from .. import __version__, config
from ..download.download_config import DownloadConfig
from ..filesystems import COMPRESSION_FILESYSTEMS
from . import _tqdm, logging
from ._filelock import FileLock
from .extract import ExtractManager
from .track import TrackedIterableFromGenerator
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
INCOMPLETE_SUFFIX = ".incomplete"
T = TypeVar("T", str, Path)
def init_hf_modules(hf_modules_cache: Optional[Union[Path, str]] = None) -> str:
"""
Add hf_modules_cache to the python path.
By default hf_modules_cache='~/.cache/huggingface/modules'.
It can also be set with the environment variable HF_MODULES_CACHE.
This is used to add modules such as `datasets_modules`
"""
hf_modules_cache = hf_modules_cache if hf_modules_cache is not None else config.HF_MODULES_CACHE
hf_modules_cache = str(hf_modules_cache)
if hf_modules_cache not in sys.path:
sys.path.append(hf_modules_cache)
os.makedirs(hf_modules_cache, exist_ok=True)
if not os.path.exists(os.path.join(hf_modules_cache, "__init__.py")):
with open(os.path.join(hf_modules_cache, "__init__.py"), "w"):
pass
return hf_modules_cache
def is_remote_url(url_or_filename: str) -> bool:
return urlparse(url_or_filename).scheme != "" and not os.path.ismount(urlparse(url_or_filename).scheme + ":/")
def is_local_path(url_or_filename: str) -> bool:
# On unix the scheme of a local path is empty (for both absolute and relative),
# while on windows the scheme is the drive name (ex: "c") for absolute paths.
# for details on the windows behavior, see https://bugs.python.org/issue42215
return urlparse(url_or_filename).scheme == "" or os.path.ismount(urlparse(url_or_filename).scheme + ":/")
def is_relative_path(url_or_filename: str) -> bool:
return urlparse(url_or_filename).scheme == "" and not os.path.isabs(url_or_filename)
def relative_to_absolute_path(path: T) -> T:
"""Convert relative path to absolute path."""
abs_path_str = os.path.abspath(os.path.expanduser(os.path.expandvars(str(path))))
return Path(abs_path_str) if isinstance(path, Path) else abs_path_str
def url_or_path_join(base_name: str, *pathnames: str) -> str:
if is_remote_url(base_name):
return posixpath.join(base_name, *(str(pathname).replace(os.sep, "/").lstrip("/") for pathname in pathnames))
else:
return Path(base_name, *pathnames).as_posix()
def url_or_path_parent(url_or_path: str) -> str:
if is_remote_url(url_or_path):
return url_or_path[: url_or_path.rindex("/")]
else:
return os.path.dirname(url_or_path)
def hash_url_to_filename(url, etag=None):
"""
Convert `url` into a hashed filename in a repeatable way.
If `etag` is specified, append its hash to the url's, delimited
by a period.
If the url ends with .h5 (Keras HDF5 weights) adds '.h5' to the name
so that TF 2.0 can identify it as a HDF5 file
(see https://github.com/tensorflow/tensorflow/blob/00fad90125b18b80fe054de1055770cfb8fe4ba3/tensorflow/python/keras/engine/network.py#L1380)
"""
url_bytes = url.encode("utf-8")
url_hash = insecure_hashlib.sha256(url_bytes)
filename = url_hash.hexdigest()
if etag:
etag_bytes = etag.encode("utf-8")
etag_hash = insecure_hashlib.sha256(etag_bytes)
filename += "." + etag_hash.hexdigest()
if url.endswith(".py"):
filename += ".py"
return filename
def cached_path(
url_or_filename,
download_config=None,
**download_kwargs,
) -> str:
"""
Given something that might be a URL (or might be a local path),
determine which. If it's a URL, download the file and cache it, and
return the path to the cached file. If it's already a local path,
make sure the file exists and then return the path.
Return:
Local path (string)
Raises:
FileNotFoundError: in case of non-recoverable file
(non-existent or no cache on disk)
ConnectionError: in case of unreachable url
and no cache on disk
ValueError: if it couldn't parse the url or filename correctly
requests.exceptions.ConnectionError: in case of internet connection issue
"""
if download_config is None:
download_config = DownloadConfig(**download_kwargs)
cache_dir = download_config.cache_dir or config.DOWNLOADED_DATASETS_PATH
if isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
if isinstance(url_or_filename, Path):
url_or_filename = str(url_or_filename)
# Convert fsspec URL in the format "file://local/path" to "local/path"
if can_be_local(url_or_filename):
url_or_filename = strip_protocol(url_or_filename)
if is_remote_url(url_or_filename):
# URL, so get it from the cache (downloading if necessary)
url_or_filename, storage_options = _prepare_path_and_storage_options(
url_or_filename, download_config=download_config
)
# Download files from Hugging Face.
# Note: no need to check for https://huggingface.co file URLs since _prepare_path_and_storage_options
# prepares Hugging Face HTTP URLs as hf:// paths already
if url_or_filename.startswith("hf://"):
resolved_path = huggingface_hub.HfFileSystem(
endpoint=config.HF_ENDPOINT, token=download_config.token
).resolve_path(url_or_filename)
try:
output_path = huggingface_hub.HfApi(
endpoint=config.HF_ENDPOINT,
token=download_config.token,
library_name="datasets",
library_version=__version__,
user_agent=get_datasets_user_agent(download_config.user_agent),
).hf_hub_download(
repo_id=resolved_path.repo_id,
repo_type=resolved_path.repo_type,
revision=resolved_path.revision,
filename=resolved_path.path_in_repo,
force_download=download_config.force_download,
proxies=download_config.proxies,
)
except (
huggingface_hub.utils.RepositoryNotFoundError,
huggingface_hub.utils.EntryNotFoundError,
huggingface_hub.utils.RevisionNotFoundError,
huggingface_hub.utils.GatedRepoError,
) as e:
raise FileNotFoundError(str(e)) from e
# Download external files
else:
output_path = get_from_cache(
url_or_filename,
cache_dir=cache_dir,
force_download=download_config.force_download,
user_agent=download_config.user_agent,
use_etag=download_config.use_etag,
token=download_config.token,
storage_options=storage_options,
download_desc=download_config.download_desc,
disable_tqdm=download_config.disable_tqdm,
)
elif os.path.exists(url_or_filename):
# File, and it exists.
output_path = url_or_filename
elif is_local_path(url_or_filename):
# File, but it doesn't exist.
raise FileNotFoundError(f"Local file {url_or_filename} doesn't exist")
else:
# Something unknown
raise ValueError(f"unable to parse {url_or_filename} as a URL or as a local path")
if output_path is None:
return output_path
if download_config.extract_compressed_file:
if download_config.extract_on_the_fly:
# Add a compression prefix to the compressed file so that it can be extracted
# as it's being read using xopen.
protocol = _get_extraction_protocol(output_path, download_config=download_config)
extension = _get_path_extension(url_or_filename.split("::")[0])
if (
protocol
and extension not in ["tgz", "tar"]
and not url_or_filename.split("::")[0].endswith((".tar.gz", ".tar.bz2", ".tar.xz"))
):
output_path = relative_to_absolute_path(output_path)
if protocol in SINGLE_FILE_COMPRESSION_PROTOCOLS:
# there is one single file which is the uncompressed file
inner_file = os.path.basename(output_path)
inner_file = inner_file[: inner_file.rindex(".")] if "." in inner_file else inner_file
output_path = f"{protocol}://{inner_file}::{output_path}"
else:
output_path = f"{protocol}://::{output_path}"
return output_path
# Eager extraction
output_path = ExtractManager(cache_dir=download_config.cache_dir).extract(
output_path, force_extract=download_config.force_extract
)
return relative_to_absolute_path(output_path)
def get_datasets_user_agent(user_agent: Optional[Union[str, dict]] = None) -> str:
ua = f"datasets/{__version__}"
ua += f"; python/{config.PY_VERSION}"
ua += f"; huggingface_hub/{huggingface_hub.__version__}"
ua += f"; pyarrow/{config.PYARROW_VERSION}"
if config.TORCH_AVAILABLE:
ua += f"; torch/{config.TORCH_VERSION}"
if config.TF_AVAILABLE:
ua += f"; tensorflow/{config.TF_VERSION}"
if config.JAX_AVAILABLE:
ua += f"; jax/{config.JAX_VERSION}"
if isinstance(user_agent, dict):
ua += f"; {'; '.join(f'{k}/{v}' for k, v in user_agent.items())}"
elif isinstance(user_agent, str):
ua += "; " + user_agent
return ua
def get_authentication_headers_for_url(url: str, token: Optional[Union[str, bool]] = None) -> dict:
"""Handle the HF authentication"""
if url.startswith(config.HF_ENDPOINT):
return huggingface_hub.utils.build_hf_headers(
token=token, library_name="datasets", library_version=__version__
)
else:
return {}
class OfflineModeIsEnabled(ConnectionError):
pass
def _raise_if_offline_mode_is_enabled(msg: Optional[str] = None):
"""Raise an OfflineModeIsEnabled error (subclass of ConnectionError) if HF_HUB_OFFLINE is True."""
if config.HF_HUB_OFFLINE:
raise OfflineModeIsEnabled(
"Offline mode is enabled." if msg is None else "Offline mode is enabled. " + str(msg)
)
def fsspec_head(url, storage_options=None):
_raise_if_offline_mode_is_enabled(f"Tried to reach {url}")
fs, path = url_to_fs(url, **(storage_options or {}))
return fs.info(path)
def stack_multiprocessing_download_progress_bars():
# Stack downloads progress bars automatically using HF_DATASETS_STACK_MULTIPROCESSING_DOWNLOAD_PROGRESS_BARS=1
# We use environment variables since the download may happen in a subprocess
return patch.dict(os.environ, {"HF_DATASETS_STACK_MULTIPROCESSING_DOWNLOAD_PROGRESS_BARS": "1"})
class TqdmCallback(fsspec.callbacks.TqdmCallback):
def __init__(self, tqdm_kwargs=None, *args, **kwargs):
if config.FSSPEC_VERSION < version.parse("2024.2.0"):
super().__init__(tqdm_kwargs, *args, **kwargs)
self._tqdm = _tqdm # replace tqdm module by datasets.utils.tqdm module
else:
kwargs["tqdm_cls"] = _tqdm.tqdm
super().__init__(tqdm_kwargs, *args, **kwargs)
def fsspec_get(url, temp_file, storage_options=None, desc=None, disable_tqdm=False):
_raise_if_offline_mode_is_enabled(f"Tried to reach {url}")
fs, path = url_to_fs(url, **(storage_options or {}))
callback = TqdmCallback(
tqdm_kwargs={
"desc": desc or "Downloading",
"unit": "B",
"unit_scale": True,
"position": multiprocessing.current_process()._identity[-1] # contains the ranks of subprocesses
if os.environ.get("HF_DATASETS_STACK_MULTIPROCESSING_DOWNLOAD_PROGRESS_BARS") == "1"
and multiprocessing.current_process()._identity
else None,
"disable": disable_tqdm,
}
)
fs.get_file(path, temp_file.name, callback=callback)
def get_from_cache(
url,
cache_dir=None,
force_download=False,
user_agent=None,
use_etag=True,
token=None,
storage_options=None,
download_desc=None,
disable_tqdm=False,
) -> str:
"""
Given a URL, look for the corresponding file in the local cache.
If it's not there, download it. Then return the path to the cached file.
Return:
Local path (string)
Raises:
FileNotFoundError: in case of non-recoverable file
(non-existent or no cache on disk)
ConnectionError: in case of unreachable url
and no cache on disk
"""
if storage_options is None:
storage_options = {}
if cache_dir is None:
cache_dir = config.HF_DATASETS_CACHE
if isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
os.makedirs(cache_dir, exist_ok=True)
response = None
etag = None
# Try a first time to file the file on the local file system without eTag (None)
# if we don't ask for 'force_download' then we spare a request
filename = hash_url_to_filename(url, etag=None)
cache_path = os.path.join(cache_dir, filename)
if os.path.exists(cache_path) and not force_download and not use_etag:
return cache_path
# Prepare headers for authentication
headers = get_authentication_headers_for_url(url, token=token)
if user_agent is not None:
headers["user-agent"] = user_agent
response = fsspec_head(url, storage_options=storage_options)
etag = (response.get("ETag", None) or response.get("etag", None)) if use_etag else None
# Try a second time
filename = hash_url_to_filename(url, etag)
cache_path = os.path.join(cache_dir, filename)
if os.path.exists(cache_path) and not force_download:
return cache_path
# Prevent parallel downloads of the same file with a lock.
lock_path = cache_path + ".lock"
with FileLock(lock_path):
# Retry in case previously locked processes just enter after the precedent process releases the lock
if os.path.exists(cache_path) and not force_download:
return cache_path
incomplete_path = cache_path + ".incomplete"
@contextmanager
def temp_file_manager(mode="w+b"):
with open(incomplete_path, mode) as f:
yield f
# Download to temporary file, then copy to cache path once finished.
# Otherwise, you get corrupt cache entries if the download gets interrupted.
with temp_file_manager() as temp_file:
logger.info(f"{url} not found in cache or force_download set to True, downloading to {temp_file.name}")
# GET file object
fsspec_get(url, temp_file, storage_options=storage_options, desc=download_desc, disable_tqdm=disable_tqdm)
logger.info(f"storing {url} in cache at {cache_path}")
shutil.move(temp_file.name, cache_path)
umask = os.umask(0o666)
os.umask(umask)
os.chmod(cache_path, 0o666 & ~umask)
logger.info(f"creating metadata file for {cache_path}")
meta = {"url": url, "etag": etag}
meta_path = cache_path + ".json"
with open(meta_path, "w", encoding="utf-8") as meta_file:
json.dump(meta, meta_file)
return cache_path
def add_start_docstrings(*docstr):
def docstring_decorator(fn):
fn.__doc__ = "".join(docstr) + "\n\n" + (fn.__doc__ if fn.__doc__ is not None else "")
return fn
return docstring_decorator
def add_end_docstrings(*docstr):
def docstring_decorator(fn):
fn.__doc__ = (fn.__doc__ if fn.__doc__ is not None else "") + "\n\n" + "".join(docstr)
return fn
return docstring_decorator
def estimate_dataset_size(paths):
return sum(path.stat().st_size for path in paths)
def readline(f: io.RawIOBase):
# From: https://github.com/python/cpython/blob/d27e2f4d118e7a9909b6a3e5da06c5ff95806a85/Lib/_pyio.py#L525
res = bytearray()
while True:
b = f.read(1)
if not b:
break
res += b
if res.endswith(b"\n"):
break
return bytes(res)
#######################
# Streaming utilities #
#######################
BASE_KNOWN_EXTENSIONS = [
"txt",
"csv",
"json",
"jsonl",
"tsv",
"conll",
"conllu",
"orig",
"parquet",
"pkl",
"pickle",
"rel",
"xml",
"arrow",
]
COMPRESSION_EXTENSION_TO_PROTOCOL = {
# single file compression
**{fs_class.extension.lstrip("."): fs_class.protocol for fs_class in COMPRESSION_FILESYSTEMS},
# archive compression
"zip": "zip",
}
SINGLE_FILE_COMPRESSION_EXTENSION_TO_PROTOCOL = {
fs_class.extension.lstrip("."): fs_class.protocol for fs_class in COMPRESSION_FILESYSTEMS
}
SINGLE_FILE_COMPRESSION_PROTOCOLS = {fs_class.protocol for fs_class in COMPRESSION_FILESYSTEMS}
SINGLE_SLASH_AFTER_PROTOCOL_PATTERN = re.compile(r"(?<!:):/")
MAGIC_NUMBER_TO_COMPRESSION_PROTOCOL = {
bytes.fromhex("504B0304"): "zip",
bytes.fromhex("504B0506"): "zip", # empty archive
bytes.fromhex("504B0708"): "zip", # spanned archive
bytes.fromhex("425A68"): "bz2",
bytes.fromhex("1F8B"): "gzip",
bytes.fromhex("FD377A585A00"): "xz",
bytes.fromhex("04224D18"): "lz4",
bytes.fromhex("28B52FFD"): "zstd",
}
MAGIC_NUMBER_TO_UNSUPPORTED_COMPRESSION_PROTOCOL = {
b"Rar!": "rar",
}
MAGIC_NUMBER_MAX_LENGTH = max(
len(magic_number)
for magic_number in chain(MAGIC_NUMBER_TO_COMPRESSION_PROTOCOL, MAGIC_NUMBER_TO_UNSUPPORTED_COMPRESSION_PROTOCOL)
)
class NonStreamableDatasetError(Exception):
pass
def _get_path_extension(path: str) -> str:
# Get extension: https://foo.bar/train.json.gz -> gz
extension = path.split(".")[-1]
# Remove query params ("dl=1", "raw=true"): gz?dl=1 -> gz
# Remove shards infos (".txt_1", ".txt-00000-of-00100"): txt_1 -> txt
for symb in "?-_":
extension = extension.split(symb)[0]
return extension
def _get_extraction_protocol_with_magic_number(f) -> Optional[str]:
"""read the magic number from a file-like object and return the compression protocol"""
# Check if the file object is seekable even before reading the magic number (to avoid https://bugs.python.org/issue26440)
try:
f.seek(0)
except (AttributeError, io.UnsupportedOperation):
return None
magic_number = f.read(MAGIC_NUMBER_MAX_LENGTH)
f.seek(0)
for i in range(MAGIC_NUMBER_MAX_LENGTH):
compression = MAGIC_NUMBER_TO_COMPRESSION_PROTOCOL.get(magic_number[: MAGIC_NUMBER_MAX_LENGTH - i])
if compression is not None:
return compression
compression = MAGIC_NUMBER_TO_UNSUPPORTED_COMPRESSION_PROTOCOL.get(magic_number[: MAGIC_NUMBER_MAX_LENGTH - i])
if compression is not None:
raise NotImplementedError(f"Compression protocol '{compression}' not implemented.")
def _get_extraction_protocol(urlpath: str, download_config: Optional[DownloadConfig] = None) -> Optional[str]:
# get inner file: zip://train-00000.json.gz::https://foo.bar/data.zip -> zip://train-00000.json.gz
urlpath = str(urlpath)
path = urlpath.split("::")[0]
extension = _get_path_extension(path)
if (
extension in BASE_KNOWN_EXTENSIONS
or extension in ["tgz", "tar"]
or path.endswith((".tar.gz", ".tar.bz2", ".tar.xz"))
):
return None
elif extension in COMPRESSION_EXTENSION_TO_PROTOCOL:
return COMPRESSION_EXTENSION_TO_PROTOCOL[extension]
urlpath, storage_options = _prepare_path_and_storage_options(urlpath, download_config=download_config)
try:
with fsspec.open(urlpath, **(storage_options or {})) as f:
return _get_extraction_protocol_with_magic_number(f)
except FileNotFoundError:
if urlpath.startswith(config.HF_ENDPOINT):
raise FileNotFoundError(
urlpath + "\nIf the repo is private or gated, make sure to log in with `huggingface-cli login`."
) from None
else:
raise
def xjoin(a, *p):
"""
This function extends os.path.join to support the "::" hop separator. It supports both paths and urls.
A shorthand, particularly useful where you have multiple hops, is to “chain” the URLs with the special separator "::".
This is used to access files inside a zip file over http for example.
Let's say you have a zip file at https://host.com/archive.zip, and you want to access the file inside the zip file at /folder1/file.txt.
Then you can just chain the url this way:
zip://folder1/file.txt::https://host.com/archive.zip
The xjoin function allows you to apply the join on the first path of the chain.
Example::
>>> xjoin("zip://folder1::https://host.com/archive.zip", "file.txt")
zip://folder1/file.txt::https://host.com/archive.zip
"""
a, *b = str(a).split("::")
if is_local_path(a):
return os.path.join(a, *p)
else:
a = posixpath.join(a, *p)
return "::".join([a] + b)
def xdirname(a):
"""
This function extends os.path.dirname to support the "::" hop separator. It supports both paths and urls.
A shorthand, particularly useful where you have multiple hops, is to “chain” the URLs with the special separator "::".
This is used to access files inside a zip file over http for example.
Let's say you have a zip file at https://host.com/archive.zip, and you want to access the file inside the zip file at /folder1/file.txt.
Then you can just chain the url this way:
zip://folder1/file.txt::https://host.com/archive.zip
The xdirname function allows you to apply the dirname on the first path of the chain.
Example::
>>> xdirname("zip://folder1/file.txt::https://host.com/archive.zip")
zip://folder1::https://host.com/archive.zip
"""
a, *b = str(a).split("::")
if is_local_path(a):
a = os.path.dirname(Path(a).as_posix())
else:
a = posixpath.dirname(a)
# if we end up at the root of the protocol, we get for example a = 'http:'
# so we have to fix it by adding the '//' that was removed:
if a.endswith(":"):
a += "//"
return "::".join([a] + b)
def xexists(urlpath: str, download_config: Optional[DownloadConfig] = None):
"""Extend `os.path.exists` function to support both local and remote files.
Args:
urlpath (`str`): URL path.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`bool`
"""
main_hop, *rest_hops = _as_str(urlpath).split("::")
if is_local_path(main_hop):
return os.path.exists(main_hop)
else:
urlpath, storage_options = _prepare_path_and_storage_options(urlpath, download_config=download_config)
main_hop, *rest_hops = urlpath.split("::")
fs, *_ = url_to_fs(urlpath, **storage_options)
return fs.exists(main_hop)
def xbasename(a):
"""
This function extends os.path.basename to support the "::" hop separator. It supports both paths and urls.
A shorthand, particularly useful where you have multiple hops, is to “chain” the URLs with the special separator "::".
This is used to access files inside a zip file over http for example.
Let's say you have a zip file at https://host.com/archive.zip, and you want to access the file inside the zip file at /folder1/file.txt.
Then you can just chain the url this way:
zip://folder1/file.txt::https://host.com/archive.zip
The xbasename function allows you to apply the basename on the first path of the chain.
Example::
>>> xbasename("zip://folder1/file.txt::https://host.com/archive.zip")
file.txt
"""
a, *b = str(a).split("::")
if is_local_path(a):
return os.path.basename(Path(a).as_posix())
else:
return posixpath.basename(a)
def xsplit(a):
"""
This function extends os.path.split to support the "::" hop separator. It supports both paths and urls.
A shorthand, particularly useful where you have multiple hops, is to “chain” the URLs with the special separator "::".
This is used to access files inside a zip file over http for example.
Let's say you have a zip file at https://host.com/archive.zip, and you want to access the file inside the zip file at /folder1/file.txt.
Then you can just chain the url this way:
zip://folder1/file.txt::https://host.com/archive.zip
The xsplit function allows you to apply the xsplit on the first path of the chain.
Example::
>>> xsplit("zip://folder1/file.txt::https://host.com/archive.zip")
('zip://folder1::https://host.com/archive.zip', 'file.txt')
"""
a, *b = str(a).split("::")
if is_local_path(a):
return os.path.split(Path(a).as_posix())
else:
a, tail = posixpath.split(a)
return "::".join([a + "//" if a.endswith(":") else a] + b), tail
def xsplitext(a):
"""
This function extends os.path.splitext to support the "::" hop separator. It supports both paths and urls.
A shorthand, particularly useful where you have multiple hops, is to “chain” the URLs with the special separator "::".
This is used to access files inside a zip file over http for example.
Let's say you have a zip file at https://host.com/archive.zip, and you want to access the file inside the zip file at /folder1/file.txt.
Then you can just chain the url this way:
zip://folder1/file.txt::https://host.com/archive.zip
The xsplitext function allows you to apply the splitext on the first path of the chain.
Example::
>>> xsplitext("zip://folder1/file.txt::https://host.com/archive.zip")
('zip://folder1/file::https://host.com/archive.zip', '.txt')
"""
a, *b = str(a).split("::")
if is_local_path(a):
return os.path.splitext(Path(a).as_posix())
else:
a, ext = posixpath.splitext(a)
return "::".join([a] + b), ext
def xisfile(path, download_config: Optional[DownloadConfig] = None) -> bool:
"""Extend `os.path.isfile` function to support remote files.
Args:
path (`str`): URL path.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`bool`
"""
main_hop, *rest_hops = str(path).split("::")
if is_local_path(main_hop):
return os.path.isfile(path)
else:
path, storage_options = _prepare_path_and_storage_options(path, download_config=download_config)
main_hop, *rest_hops = path.split("::")
fs, *_ = url_to_fs(path, **storage_options)
return fs.isfile(main_hop)
def xgetsize(path, download_config: Optional[DownloadConfig] = None) -> int:
"""Extend `os.path.getsize` function to support remote files.
Args:
path (`str`): URL path.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`int`: optional
"""
main_hop, *rest_hops = str(path).split("::")
if is_local_path(main_hop):
return os.path.getsize(path)
else:
path, storage_options = _prepare_path_and_storage_options(path, download_config=download_config)
main_hop, *rest_hops = path.split("::")
fs, *_ = fs, *_ = url_to_fs(path, **storage_options)
try:
size = fs.size(main_hop)
except EntryNotFoundError:
raise FileNotFoundError(f"No such file: {path}")
if size is None:
# use xopen instead of fs.open to make data fetching more robust
with xopen(path, download_config=download_config) as f:
size = len(f.read())
return size
def xisdir(path, download_config: Optional[DownloadConfig] = None) -> bool:
"""Extend `os.path.isdir` function to support remote files.
Args:
path (`str`): URL path.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`bool`
"""
main_hop, *rest_hops = str(path).split("::")
if is_local_path(main_hop):
return os.path.isdir(path)
else:
path, storage_options = _prepare_path_and_storage_options(path, download_config=download_config)
main_hop, *rest_hops = path.split("::")
fs, *_ = fs, *_ = url_to_fs(path, **storage_options)
inner_path = main_hop.split("://")[-1]
if not inner_path.strip("/"):
return True
return fs.isdir(inner_path)
def xrelpath(path, start=None):
"""Extend `os.path.relpath` function to support remote files.
Args:
path (`str`): URL path.
start (`str`): Start URL directory path.
Returns:
`str`
"""
main_hop, *rest_hops = str(path).split("::")
if is_local_path(main_hop):
return os.path.relpath(main_hop, start=start) if start else os.path.relpath(main_hop)
else:
return posixpath.relpath(main_hop, start=str(start).split("::")[0]) if start else os.path.relpath(main_hop)
def _add_retries_to_file_obj_read_method(file_obj):
read = file_obj.read
max_retries = config.STREAMING_READ_MAX_RETRIES
def read_with_retries(*args, **kwargs):
disconnect_err = None
for retry in range(1, max_retries + 1):
try:
out = read(*args, **kwargs)
break
except (
aiohttp.client_exceptions.ClientError,
asyncio.TimeoutError,
requests.exceptions.ConnectTimeout,
requests.exceptions.ConnectionError,
) as err:
disconnect_err = err
logger.warning(
f"Got disconnected from remote data host. Retrying in {config.STREAMING_READ_RETRY_INTERVAL}sec [{retry}/{max_retries}]"
)
time.sleep(config.STREAMING_READ_RETRY_INTERVAL)
else:
raise ConnectionError("Server Disconnected") from disconnect_err
return out
try:
file_obj.read = read_with_retries
except AttributeError: # read-only attribute
orig_file_obj = file_obj
file_obj = io.RawIOBase()
file_obj.read = read_with_retries
file_obj.__getattr__ = lambda _, attr: getattr(orig_file_obj, attr)
return file_obj
def _prepare_path_and_storage_options(
urlpath: str, download_config: Optional[DownloadConfig] = None
) -> Tuple[str, Dict[str, Dict[str, Any]]]:
prepared_urlpath = []
prepared_storage_options = {}
for hop in urlpath.split("::"):
hop, storage_options = _prepare_single_hop_path_and_storage_options(hop, download_config=download_config)
prepared_urlpath.append(hop)
prepared_storage_options.update(storage_options)
return "::".join(prepared_urlpath), storage_options
def _prepare_single_hop_path_and_storage_options(
urlpath: str, download_config: Optional[DownloadConfig] = None
) -> Tuple[str, Dict[str, Dict[str, Any]]]:
"""
Prepare the URL and the kwargs that must be passed to the HttpFileSystem or HfFileSystem
In particular it resolves google drive URLs
It also adds the authentication headers for the Hugging Face Hub, for both https:// and hf:// paths.
Storage options are formatted in the form {protocol: storage_options_for_protocol}
"""
token = None if download_config is None else download_config.token
if urlpath.startswith(config.HF_ENDPOINT) and "/resolve/" in urlpath:
urlpath = "hf://" + urlpath[len(config.HF_ENDPOINT) + 1 :].replace("/resolve/", "@", 1)
protocol = urlpath.split("://")[0] if "://" in urlpath else "file"
if download_config is not None and protocol in download_config.storage_options:
storage_options = download_config.storage_options[protocol].copy()
elif download_config is not None and protocol not in download_config.storage_options:
storage_options = {
option_name: option_value
for option_name, option_value in download_config.storage_options.items()
if option_name not in fsspec.available_protocols()
}
else:
storage_options = {}
if protocol in {"http", "https"}:
client_kwargs = storage_options.pop("client_kwargs", {})
storage_options["client_kwargs"] = {"trust_env": True, **client_kwargs} # Enable reading proxy env variables
if "drive.google.com" in urlpath:
response = get_session().head(urlpath, timeout=10)
for k, v in response.cookies.items():
if k.startswith("download_warning"):
urlpath += "&confirm=" + v
cookies = response.cookies
storage_options = {"cookies": cookies, **storage_options}
# Fix Google Drive URL to avoid Virus scan warning
if "confirm=" not in urlpath:
urlpath += "&confirm=t"
if urlpath.startswith("https://raw.githubusercontent.com/"):
# Workaround for served data with gzip content-encoding: https://github.com/fsspec/filesystem_spec/issues/389
headers = storage_options.pop("headers", {})
storage_options["headers"] = {"Accept-Encoding": "identity", **headers}
elif protocol == "hf":
storage_options = {
"token": token,
"endpoint": config.HF_ENDPOINT,
**storage_options,
}
# streaming with block_size=0 is only implemented in 0.21 (see https://github.com/huggingface/huggingface_hub/pull/1967)
if config.HF_HUB_VERSION < version.parse("0.21.0"):
storage_options["block_size"] = "default"
if storage_options:
storage_options = {protocol: storage_options}
return urlpath, storage_options
def xopen(file: str, mode="r", *args, download_config: Optional[DownloadConfig] = None, **kwargs):
"""Extend `open` function to support remote files using `fsspec`.
It also has a retry mechanism in case connection fails.
The `args` and `kwargs` are passed to `fsspec.open`, except `token` which is used for queries to private repos on huggingface.co
Args:
file (`str`): Path name of the file to be opened.
mode (`str`, *optional*, default "r"): Mode in which the file is opened.
*args: Arguments to be passed to `fsspec.open`.
download_config : mainly use token or storage_options to support different platforms and auth types.
**kwargs: Keyword arguments to be passed to `fsspec.open`.
Returns:
file object
"""
# This works as well for `xopen(str(Path(...)))`
file_str = _as_str(file)
main_hop, *rest_hops = file_str.split("::")
if is_local_path(main_hop):
# ignore fsspec-specific kwargs
kwargs.pop("block_size", None)
return open(main_hop, mode, *args, **kwargs)
# add headers and cookies for authentication on the HF Hub and for Google Drive
file, storage_options = _prepare_path_and_storage_options(file_str, download_config=download_config)
kwargs = {**kwargs, **(storage_options or {})}
try:
file_obj = fsspec.open(file, mode=mode, *args, **kwargs).open()
except ValueError as e:
if str(e) == "Cannot seek streaming HTTP file":
raise NonStreamableDatasetError(
"Streaming is not possible for this dataset because data host server doesn't support HTTP range "
"requests. You can still load this dataset in non-streaming mode by passing `streaming=False` (default)"
) from e
else:
raise
except FileNotFoundError:
if file.startswith(config.HF_ENDPOINT):
raise FileNotFoundError(
file + "\nIf the repo is private or gated, make sure to log in with `huggingface-cli login`."
) from None
else:
raise
file_obj = _add_retries_to_file_obj_read_method(file_obj)
return file_obj
def xlistdir(path: str, download_config: Optional[DownloadConfig] = None) -> List[str]:
"""Extend `os.listdir` function to support remote files.
Args:
path (`str`): URL path.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`list` of `str`
"""
main_hop, *rest_hops = _as_str(path).split("::")
if is_local_path(main_hop):
return os.listdir(path)
else:
# globbing inside a zip in a private repo requires authentication
path, storage_options = _prepare_path_and_storage_options(path, download_config=download_config)
main_hop, *rest_hops = path.split("::")
fs, *_ = url_to_fs(path, **storage_options)
inner_path = main_hop.split("://")[-1]
if inner_path.strip("/") and not fs.isdir(inner_path):
raise FileNotFoundError(f"Directory doesn't exist: {path}")
paths = fs.listdir(inner_path, detail=False)
return [os.path.basename(path.rstrip("/")) for path in paths]
def xglob(urlpath, *, recursive=False, download_config: Optional[DownloadConfig] = None):
"""Extend `glob.glob` function to support remote files.
Args:
urlpath (`str`): URL path with shell-style wildcard patterns.
recursive (`bool`, default `False`): Whether to match the "**" pattern recursively to zero or more
directories or subdirectories.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`list` of `str`
"""
main_hop, *rest_hops = _as_str(urlpath).split("::")
if is_local_path(main_hop):
return glob.glob(main_hop, recursive=recursive)
else:
# globbing inside a zip in a private repo requires authentication
urlpath, storage_options = _prepare_path_and_storage_options(urlpath, download_config=download_config)
main_hop, *rest_hops = urlpath.split("::")
fs, *_ = url_to_fs(urlpath, **storage_options)
inner_path = main_hop.split("://")[1]
globbed_paths = fs.glob(inner_path)
protocol = fs.protocol if isinstance(fs.protocol, str) else fs.protocol[-1]
return ["::".join([f"{protocol}://{globbed_path}"] + rest_hops) for globbed_path in globbed_paths]
def xwalk(urlpath, download_config: Optional[DownloadConfig] = None, **kwargs):
"""Extend `os.walk` function to support remote files.
Args:
urlpath (`str`): URL root path.
download_config : mainly use token or storage_options to support different platforms and auth types.
**kwargs: Additional keyword arguments forwarded to the underlying filesystem.
Yields:
`tuple`: 3-tuple (dirpath, dirnames, filenames).
"""
main_hop, *rest_hops = _as_str(urlpath).split("::")
if is_local_path(main_hop):
yield from os.walk(main_hop, **kwargs)
else:
# walking inside a zip in a private repo requires authentication
urlpath, storage_options = _prepare_path_and_storage_options(urlpath, download_config=download_config)
main_hop, *rest_hops = urlpath.split("::")
fs, *_ = url_to_fs(urlpath, **storage_options)
inner_path = main_hop.split("://")[-1]
if inner_path.strip("/") and not fs.isdir(inner_path):
return []
protocol = fs.protocol if isinstance(fs.protocol, str) else fs.protocol[-1]
for dirpath, dirnames, filenames in fs.walk(inner_path, **kwargs):
yield "::".join([f"{protocol}://{dirpath}"] + rest_hops), dirnames, filenames
class xPath(type(Path())):
"""Extension of `pathlib.Path` to support both local paths and remote URLs."""
def __str__(self):
path_str = super().__str__()
main_hop, *rest_hops = path_str.split("::")
if is_local_path(main_hop):
return main_hop
path_as_posix = path_str.replace("\\", "/")
path_as_posix = SINGLE_SLASH_AFTER_PROTOCOL_PATTERN.sub("://", path_as_posix)
path_as_posix += "//" if path_as_posix.endswith(":") else "" # Add slashes to root of the protocol
return path_as_posix
def exists(self, download_config: Optional[DownloadConfig] = None):
"""Extend `pathlib.Path.exists` method to support both local and remote files.
Args:
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`bool`
"""
return xexists(str(self), download_config=download_config)
def glob(self, pattern, download_config: Optional[DownloadConfig] = None):
"""Glob function for argument of type :obj:`~pathlib.Path` that supports both local paths end remote URLs.
Args:
pattern (`str`): Pattern that resulting paths must match.
download_config : mainly use token or storage_options to support different platforms and auth types.
Yields:
[`xPath`]
"""
posix_path = self.as_posix()
main_hop, *rest_hops = posix_path.split("::")
if is_local_path(main_hop):
yield from Path(main_hop).glob(pattern)
else:
# globbing inside a zip in a private repo requires authentication
if rest_hops:
urlpath = rest_hops[0]
urlpath, storage_options = _prepare_path_and_storage_options(urlpath, download_config=download_config)
storage_options = {urlpath.split("://")[0]: storage_options}
posix_path = "::".join([main_hop, urlpath, *rest_hops[1:]])
else:
storage_options = None
fs, *_ = url_to_fs(xjoin(posix_path, pattern), **(storage_options or {}))
globbed_paths = fs.glob(xjoin(main_hop, pattern))
for globbed_path in globbed_paths:
yield type(self)("::".join([f"{fs.protocol}://{globbed_path}"] + rest_hops))
def rglob(self, pattern, **kwargs):
"""Rglob function for argument of type :obj:`~pathlib.Path` that supports both local paths end remote URLs.
Args:
pattern (`str`): Pattern that resulting paths must match.
Yields:
[`xPath`]
"""
return self.glob("**/" + pattern, **kwargs)
@property
def parent(self) -> "xPath":
"""Name function for argument of type :obj:`~pathlib.Path` that supports both local paths end remote URLs.
Returns:
[`xPath`]
"""
return type(self)(xdirname(self.as_posix()))
@property
def name(self) -> str:
"""Name function for argument of type :obj:`~pathlib.Path` that supports both local paths end remote URLs.
Returns:
`str`
"""
return PurePosixPath(self.as_posix().split("::")[0]).name
@property
def stem(self) -> str:
"""Stem function for argument of type :obj:`~pathlib.Path` that supports both local paths end remote URLs.
Returns:
`str`
"""
return PurePosixPath(self.as_posix().split("::")[0]).stem
@property
def suffix(self) -> str:
"""Suffix function for argument of type :obj:`~pathlib.Path` that supports both local paths end remote URLs.
Returns:
`str`
"""
return PurePosixPath(self.as_posix().split("::")[0]).suffix
def open(self, *args, **kwargs):
"""Extend :func:`xopen` to support argument of type :obj:`~pathlib.Path`.
Args:
**args: Arguments passed to :func:`fsspec.open`.
**kwargs: Keyword arguments passed to :func:`fsspec.open`.
Returns:
`io.FileIO`: File-like object.
"""
return xopen(str(self), *args, **kwargs)
def joinpath(self, *p: Tuple[str, ...]) -> "xPath":
"""Extend :func:`xjoin` to support argument of type :obj:`~pathlib.Path`.
Args:
*p (`tuple` of `str`): Other path components.
Returns:
[`xPath`]
"""
return type(self)(xjoin(self.as_posix(), *p))
def __truediv__(self, p: str) -> "xPath":
return self.joinpath(p)
def with_suffix(self, suffix):
main_hop, *rest_hops = str(self).split("::")
if is_local_path(main_hop):
return type(self)(str(super().with_suffix(suffix)))
return type(self)("::".join([type(self)(PurePosixPath(main_hop).with_suffix(suffix)).as_posix()] + rest_hops))
def _as_str(path: Union[str, Path, xPath]):
return str(path) if isinstance(path, xPath) else str(xPath(str(path)))
def xgzip_open(filepath_or_buffer, *args, download_config: Optional[DownloadConfig] = None, **kwargs):
import gzip
if hasattr(filepath_or_buffer, "read"):
return gzip.open(filepath_or_buffer, *args, **kwargs)
else:
filepath_or_buffer = str(filepath_or_buffer)
return gzip.open(xopen(filepath_or_buffer, "rb", download_config=download_config), *args, **kwargs)
def xnumpy_load(filepath_or_buffer, *args, download_config: Optional[DownloadConfig] = None, **kwargs):
import numpy as np
if hasattr(filepath_or_buffer, "read"):
return np.load(filepath_or_buffer, *args, **kwargs)
else:
filepath_or_buffer = str(filepath_or_buffer)
return np.load(xopen(filepath_or_buffer, "rb", download_config=download_config), *args, **kwargs)
def xpandas_read_csv(filepath_or_buffer, download_config: Optional[DownloadConfig] = None, **kwargs):
import pandas as pd
if hasattr(filepath_or_buffer, "read"):
return pd.read_csv(filepath_or_buffer, **kwargs)
else:
filepath_or_buffer = str(filepath_or_buffer)
if kwargs.get("compression", "infer") == "infer":
kwargs["compression"] = _get_extraction_protocol(filepath_or_buffer, download_config=download_config)
return pd.read_csv(xopen(filepath_or_buffer, "rb", download_config=download_config), **kwargs)
def xpandas_read_excel(filepath_or_buffer, download_config: Optional[DownloadConfig] = None, **kwargs):
import pandas as pd
if hasattr(filepath_or_buffer, "read"):
try:
return pd.read_excel(filepath_or_buffer, **kwargs)
except ValueError: # Cannot seek streaming HTTP file
return pd.read_excel(BytesIO(filepath_or_buffer.read()), **kwargs)
else:
filepath_or_buffer = str(filepath_or_buffer)
try:
return pd.read_excel(xopen(filepath_or_buffer, "rb", download_config=download_config), **kwargs)
except ValueError: # Cannot seek streaming HTTP file
return pd.read_excel(
BytesIO(xopen(filepath_or_buffer, "rb", download_config=download_config).read()), **kwargs
)
def xpyarrow_parquet_read_table(filepath_or_buffer, download_config: Optional[DownloadConfig] = None, **kwargs):
import pyarrow.parquet as pq
if hasattr(filepath_or_buffer, "read"):
return pq.read_table(filepath_or_buffer, **kwargs)
else:
filepath_or_buffer = str(filepath_or_buffer)
return pq.read_table(xopen(filepath_or_buffer, mode="rb", download_config=download_config), **kwargs)
def xsio_loadmat(filepath_or_buffer, download_config: Optional[DownloadConfig] = None, **kwargs):
import scipy.io as sio
if hasattr(filepath_or_buffer, "read"):
return sio.loadmat(filepath_or_buffer, **kwargs)
else:
return sio.loadmat(xopen(filepath_or_buffer, "rb", download_config=download_config), **kwargs)
def xet_parse(source, parser=None, download_config: Optional[DownloadConfig] = None):
"""Extend `xml.etree.ElementTree.parse` function to support remote files.
Args:
source: File path or file object.
parser (`XMLParser`, *optional*, default `XMLParser`): Parser instance.
download_config : mainly use token or storage_options to support different platforms and auth types.
Returns:
`xml.etree.ElementTree.Element`: Root element of the given source document.
"""
if hasattr(source, "read"):
return ET.parse(source, parser=parser)
else:
with xopen(source, "rb", download_config=download_config) as f:
return ET.parse(f, parser=parser)
def xxml_dom_minidom_parse(filename_or_file, download_config: Optional[DownloadConfig] = None, **kwargs):
"""Extend `xml.dom.minidom.parse` function to support remote files.
Args:
filename_or_file (`str` or file): File path or file object.
download_config : mainly use token or storage_options to support different platforms and auth types.
**kwargs (optional): Additional keyword arguments passed to `xml.dom.minidom.parse`.
Returns:
:obj:`xml.dom.minidom.Document`: Parsed document.
"""
if hasattr(filename_or_file, "read"):
return xml.dom.minidom.parse(filename_or_file, **kwargs)
else:
with xopen(filename_or_file, "rb", download_config=download_config) as f:
return xml.dom.minidom.parse(f, **kwargs)
class ArchiveIterable(TrackedIterableFromGenerator):
"""An iterable of (path, fileobj) from a TAR archive, used by `iter_archive`"""
@staticmethod
def _iter_tar(f):
stream = tarfile.open(fileobj=f, mode="r|*")
for tarinfo in stream:
file_path = tarinfo.name
if not tarinfo.isreg():
continue
if file_path is None:
continue
if os.path.basename(file_path).startswith((".", "__")):
# skipping hidden files
continue
file_obj = stream.extractfile(tarinfo)
yield file_path, file_obj
stream.members = []
del stream
@staticmethod
def _iter_zip(f):
zipf = zipfile.ZipFile(f)
for member in zipf.infolist():
file_path = member.filename
if member.is_dir():
continue
if file_path is None:
continue
if os.path.basename(file_path).startswith((".", "__")):
# skipping hidden files
continue
file_obj = zipf.open(member)
yield file_path, file_obj
@classmethod
def _iter_from_fileobj(cls, f) -> Generator[Tuple, None, None]:
compression = _get_extraction_protocol_with_magic_number(f)
if compression == "zip":
yield from cls._iter_zip(f)
else:
yield from cls._iter_tar(f)
@classmethod
def _iter_from_urlpath(
cls, urlpath: str, download_config: Optional[DownloadConfig] = None
) -> Generator[Tuple, None, None]:
compression = _get_extraction_protocol(urlpath, download_config=download_config)
# Set block_size=0 to get faster streaming
# (e.g. for hf:// and https:// it uses streaming Requests file-like instances)
with xopen(urlpath, "rb", download_config=download_config, block_size=0) as f:
if compression == "zip":
yield from cls._iter_zip(f)
else:
yield from cls._iter_tar(f)
@classmethod
def from_buf(cls, fileobj) -> "ArchiveIterable":
return cls(cls._iter_from_fileobj, fileobj)
@classmethod
def from_urlpath(cls, urlpath_or_buf, download_config: Optional[DownloadConfig] = None) -> "ArchiveIterable":
return cls(cls._iter_from_urlpath, urlpath_or_buf, download_config)
class FilesIterable(TrackedIterableFromGenerator):
"""An iterable of paths from a list of directories or files"""
@classmethod
def _iter_from_urlpaths(
cls, urlpaths: Union[str, List[str]], download_config: Optional[DownloadConfig] = None
) -> Generator[str, None, None]:
if not isinstance(urlpaths, list):
urlpaths = [urlpaths]
for urlpath in urlpaths:
if xisfile(urlpath, download_config=download_config):
yield urlpath
elif xisdir(urlpath, download_config=download_config):
for dirpath, dirnames, filenames in xwalk(urlpath, download_config=download_config):
# in-place modification to prune the search
dirnames[:] = sorted([dirname for dirname in dirnames if not dirname.startswith((".", "__"))])
if xbasename(dirpath).startswith((".", "__")):
# skipping hidden directories
continue
for filename in sorted(filenames):
if filename.startswith((".", "__")):
# skipping hidden files
continue
yield xjoin(dirpath, filename)
else:
raise FileNotFoundError(urlpath)
@classmethod
def from_urlpaths(cls, urlpaths, download_config: Optional[DownloadConfig] = None) -> "FilesIterable":
return cls(cls._iter_from_urlpaths, urlpaths, download_config)
|
datasets/src/datasets/utils/file_utils.py/0
|
{
"file_path": "datasets/src/datasets/utils/file_utils.py",
"repo_id": "datasets",
"token_count": 22638
}
| 84
|
# Copyright 2022 The HuggingFace Datasets Authors and the TensorFlow Datasets Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""TF-specific utils import."""
import os
import warnings
from functools import partial
from math import ceil
from uuid import uuid4
import numpy as np
import pyarrow as pa
from multiprocess import get_context
try:
from multiprocess.shared_memory import SharedMemory
except ImportError:
SharedMemory = None # Version checks should prevent this being called on older Python versions
from .. import config
def minimal_tf_collate_fn(features):
if isinstance(features, dict): # case batch_size=None: nothing to collate
return features
elif config.TF_AVAILABLE:
import tensorflow as tf
else:
raise ImportError("Called a Tensorflow-specific function but Tensorflow is not installed.")
first = features[0]
batch = {}
for k, v in first.items():
if isinstance(v, np.ndarray):
batch[k] = np.stack([f[k] for f in features])
elif isinstance(v, tf.Tensor):
batch[k] = tf.stack([f[k] for f in features])
else:
batch[k] = np.array([f[k] for f in features])
return batch
def minimal_tf_collate_fn_with_renaming(features):
batch = minimal_tf_collate_fn(features)
if "label" in batch:
batch["labels"] = batch["label"]
del batch["label"]
return batch
def is_numeric_pa_type(pa_type):
if pa.types.is_list(pa_type):
return is_numeric_pa_type(pa_type.value_type)
return pa.types.is_integer(pa_type) or pa.types.is_floating(pa_type) or pa.types.is_decimal(pa_type)
def np_get_batch(
indices, dataset, cols_to_retain, collate_fn, collate_fn_args, columns_to_np_types, return_dict=False
):
if not isinstance(indices, np.ndarray):
indices = indices.numpy()
is_batched = True
# Optimization - if we're loading a sequential batch, do it with slicing instead of a list of indices
if isinstance(indices, np.integer):
batch = dataset[indices.item()]
is_batched = False
elif np.all(np.diff(indices) == 1):
batch = dataset[indices[0] : indices[-1] + 1]
elif isinstance(indices, np.ndarray):
batch = dataset[indices]
else:
raise RuntimeError("Unexpected type for indices: {}".format(type(indices)))
if cols_to_retain is not None:
batch = {
key: value
for key, value in batch.items()
if key in cols_to_retain or key in ("label", "label_ids", "labels")
}
if is_batched:
actual_size = len(list(batch.values())[0]) # Get the length of one of the arrays, assume all same
# Our collators expect a list of dicts, not a dict of lists/arrays, so we invert
batch = [{key: value[i] for key, value in batch.items()} for i in range(actual_size)]
batch = collate_fn(batch, **collate_fn_args)
if return_dict:
out_batch = {}
for col, cast_dtype in columns_to_np_types.items():
# In case the collate_fn returns something strange
array = np.array(batch[col])
array = array.astype(cast_dtype)
out_batch[col] = array
else:
out_batch = []
for col, cast_dtype in columns_to_np_types.items():
# In case the collate_fn returns something strange
array = np.array(batch[col])
array = array.astype(cast_dtype)
out_batch.append(array)
return out_batch
def dataset_to_tf(
dataset,
cols_to_retain,
collate_fn,
collate_fn_args,
columns_to_np_types,
output_signature,
shuffle,
batch_size,
drop_remainder,
):
"""Create a tf.data.Dataset from the underlying Dataset. This is a single-process method - the multiprocess
equivalent is multiprocess_dataset_to_tf.
Args:
dataset (`Dataset`): Dataset to wrap with tf.data.Dataset.
cols_to_retain (`List[str]`): Dataset column(s) to load in the
tf.data.Dataset. It is acceptable to include column names that are created by the `collate_fn` and
that do not exist in the original dataset.
collate_fn(`Callable`): A function or callable object (such as a `DataCollator`) that will collate
lists of samples into a batch.
collate_fn_args (`Dict`): A `dict` of keyword arguments to be passed to the
`collate_fn`. Can be empty.
columns_to_np_types (`Dict[str, np.dtype]`): A `dict` mapping column names to numpy dtypes.
output_signature (`Dict[str, tf.TensorSpec]`): A `dict` mapping column names to
`tf.TensorSpec` objects.
shuffle(`bool`): Shuffle the dataset order when loading. Recommended True for training, False for
validation/evaluation.
batch_size (`int`, default `None`): Size of batches to load from the dataset. Defaults to `None`, which implies that
the dataset won't be batched, but the returned dataset can be batched later with `tf_dataset.batch(batch_size)`.
drop_remainder(`bool`, default `None`): Drop the last incomplete batch when loading. If not provided,
defaults to the same setting as shuffle.
Returns:
`tf.data.Dataset`
"""
if config.TF_AVAILABLE:
import tensorflow as tf
else:
raise ImportError("Called a Tensorflow-specific function but Tensorflow is not installed.")
# TODO Matt: When our minimum Python version is 3.8 or higher, we can delete all of this and move everything
# to the NumPy multiprocessing path.
if hasattr(tf, "random_index_shuffle"):
random_index_shuffle = tf.random_index_shuffle
elif hasattr(tf.random.experimental, "index_shuffle"):
random_index_shuffle = tf.random.experimental.index_shuffle
else:
if len(dataset) > 10_000_000:
warnings.warn(
"to_tf_dataset() can be memory-inefficient on versions of TensorFlow older than 2.9. "
"If you are iterating over a dataset with a very large number of samples, consider "
"upgrading to TF >= 2.9."
)
random_index_shuffle = None
getter_fn = partial(
np_get_batch,
dataset=dataset,
cols_to_retain=cols_to_retain,
collate_fn=collate_fn,
collate_fn_args=collate_fn_args,
columns_to_np_types=columns_to_np_types,
return_dict=False,
)
# This works because dictionaries always output in the same order
tout = [tf.dtypes.as_dtype(dtype) for dtype in columns_to_np_types.values()]
@tf.function(input_signature=[tf.TensorSpec(None, tf.int64)])
def fetch_function(indices):
output = tf.py_function(
getter_fn,
inp=[indices],
Tout=tout,
)
return {key: output[i] for i, key in enumerate(columns_to_np_types.keys())}
tf_dataset = tf.data.Dataset.range(len(dataset))
if shuffle and random_index_shuffle is not None:
base_seed = tf.fill((3,), value=tf.cast(-1, dtype=tf.int64))
def scan_random_index(state, index):
if tf.reduce_all(state == -1):
# This generates a new random seed once per epoch only,
# to ensure that we iterate over each sample exactly once per epoch
state = tf.random.uniform(shape=(3,), maxval=2**62, dtype=tf.int64)
shuffled_index = random_index_shuffle(index=index, seed=state, max_index=len(dataset) - 1)
return state, shuffled_index
tf_dataset = tf_dataset.scan(base_seed, scan_random_index)
elif shuffle:
tf_dataset = tf_dataset.shuffle(tf_dataset.cardinality())
if batch_size is not None:
tf_dataset = tf_dataset.batch(batch_size, drop_remainder=drop_remainder)
tf_dataset = tf_dataset.map(fetch_function)
if batch_size is not None:
def ensure_shapes(input_dict):
return {key: tf.ensure_shape(val, output_signature[key].shape) for key, val in input_dict.items()}
else:
# Ensure shape but remove batch dimension of output_signature[key].shape
def ensure_shapes(input_dict):
return {key: tf.ensure_shape(val, output_signature[key].shape[1:]) for key, val in input_dict.items()}
return tf_dataset.map(ensure_shapes)
class SharedMemoryContext:
# This is a context manager for creating shared memory that ensures cleanup happens even if a process is interrupted
# The process that creates shared memory is always the one responsible for unlinking it in the end
def __init__(self):
self.created_shms = []
self.opened_shms = []
def get_shm(self, name, size, create):
shm = SharedMemory(size=int(size), name=name, create=create)
if create:
# We only unlink the ones we created in this context
self.created_shms.append(shm)
else:
# If we didn't create it, we only close it when done, we don't unlink it
self.opened_shms.append(shm)
return shm
def get_array(self, name, shape, dtype, create):
shm = self.get_shm(name=name, size=np.prod(shape) * np.dtype(dtype).itemsize, create=create)
return np.ndarray(shape, dtype=dtype, buffer=shm.buf)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_value, traceback):
for shm in self.created_shms:
shm.close()
shm.unlink()
for shm in self.opened_shms:
shm.close()
class NumpyMultiprocessingGenerator:
def __init__(
self,
dataset,
cols_to_retain,
collate_fn,
collate_fn_args,
columns_to_np_types,
output_signature,
shuffle,
batch_size,
drop_remainder,
num_workers,
):
self.dataset = dataset
self.cols_to_retain = cols_to_retain
self.collate_fn = collate_fn
self.collate_fn_args = collate_fn_args
self.string_columns = [col for col, dtype in columns_to_np_types.items() if dtype in (np.unicode_, np.str_)]
# Strings will be converted to arrays of single unicode chars, so that we can have a constant itemsize
self.columns_to_np_types = {
col: dtype if col not in self.string_columns else np.dtype("U1")
for col, dtype in columns_to_np_types.items()
}
self.output_signature = output_signature
self.shuffle = shuffle
self.batch_size = batch_size
self.drop_remainder = drop_remainder
self.num_workers = num_workers
# Because strings are converted to characters, we need to add one extra dimension to the shape
self.columns_to_ranks = {
col: int(spec.shape.rank) if col not in self.string_columns else int(spec.shape.rank) + 1
for col, spec in output_signature.items()
}
def __iter__(self):
# Make sure we only spawn workers if they have work to do
num_workers = min(self.num_workers, int(ceil(len(self.dataset) / self.batch_size)))
# Do the shuffling in iter so that it's done at the start of each epoch
per_worker_batches, final_batch, final_batch_worker = self.distribute_batches(
self.dataset, self.batch_size, self.drop_remainder, num_workers, self.shuffle
)
ctx = get_context("spawn")
names = []
shape_arrays = []
workers = []
array_ready_events = [ctx.Event() for _ in range(num_workers)]
array_loaded_events = [ctx.Event() for _ in range(num_workers)]
base_args = {
"dataset": self.dataset,
"cols_to_retain": self.cols_to_retain,
"collate_fn": self.collate_fn,
"collate_fn_args": self.collate_fn_args,
"columns_to_np_types": self.columns_to_np_types,
"columns_to_ranks": self.columns_to_ranks,
"string_columns": self.string_columns,
}
with SharedMemoryContext() as shm_ctx:
for i in range(num_workers):
worker_random_id = str(uuid4())
worker_name = f"dw_{i}_{worker_random_id}"[:10]
names.append(worker_name)
worker_shape_arrays = {
col: shm_ctx.get_array(f"{worker_name}_{col}_shape", shape=(rank,), dtype=np.int64, create=True)
for col, rank in self.columns_to_ranks.items()
}
shape_arrays.append(worker_shape_arrays)
worker_indices = per_worker_batches[i]
if i == final_batch_worker and final_batch is not None:
final_batch_arg = final_batch
else:
final_batch_arg = None
worker_kwargs = {
"worker_name": worker_name,
"indices": worker_indices,
"extra_batch": final_batch_arg,
"array_ready_event": array_ready_events[i],
"array_loaded_event": array_loaded_events[i],
**base_args,
}
worker = ctx.Process(target=self.worker_loop, kwargs=worker_kwargs, daemon=True)
worker.start()
workers.append(worker)
end_signal_received = False
while not end_signal_received:
for i in range(num_workers):
if not array_ready_events[i].wait(timeout=60):
raise TimeoutError("Data loading worker timed out!")
array_ready_events[i].clear()
array_shapes = shape_arrays[i]
if any(np.any(shape < 0) for shape in array_shapes.values()):
# Child processes send negative array shapes to indicate
# that no more data is going to be sent
end_signal_received = True
break
# Matt: Because array shapes are variable we recreate the shared memory each iteration.
# I suspect repeatedly opening lots of shared memory is the bottleneck for the parent process.
# A future optimization, at the cost of some code complexity, could be to reuse shared memory
# between iterations, but this would require knowing in advance the maximum size, or having
# a system to only create a new memory block when a new maximum size is seen.
# Another potential optimization would be to figure out which memory copies are necessary,
# or whether we can yield objects straight out of shared memory.
with SharedMemoryContext() as batch_shm_ctx:
# This memory context only lasts long enough to copy everything out of the batch
arrays = {
col: batch_shm_ctx.get_array(
f"{names[i]}_{col}",
shape=shape,
dtype=self.columns_to_np_types[col],
create=False,
)
for col, shape in array_shapes.items()
}
# Copy everything out of shm because the memory
# will be unlinked by the child process at some point
arrays = {col: np.copy(arr) for col, arr in arrays.items()}
# Now we convert any unicode char arrays to strings
for string_col in self.string_columns:
arrays[string_col] = (
arrays[string_col].view(f"U{arrays[string_col].shape[-1]}").squeeze(-1)
)
yield arrays
array_loaded_events[i].set()
# Now we just do some cleanup
# Shared memory is cleaned up by the context manager, so we just make sure workers finish
for worker in workers:
worker.join()
def __call__(self):
return self
@staticmethod
def worker_loop(
dataset,
cols_to_retain,
collate_fn,
collate_fn_args,
columns_to_np_types,
columns_to_ranks,
string_columns,
indices,
extra_batch,
worker_name,
array_ready_event,
array_loaded_event,
):
os.environ["TF_CPP_MIN_LOG_LEVEL"] = "3"
if config.TF_AVAILABLE:
import tensorflow as tf
else:
raise ImportError("Called a Tensorflow-specific function but Tensorflow is not installed.")
tf.config.set_visible_devices([], "GPU") # Make sure workers don't try to allocate GPU memory
def send_batch_to_parent(indices):
batch = np_get_batch(
indices=indices,
dataset=dataset,
cols_to_retain=cols_to_retain,
collate_fn=collate_fn,
collate_fn_args=collate_fn_args,
columns_to_np_types=columns_to_np_types,
return_dict=True,
)
# Now begins the fun part where we start shovelling shared memory at the parent process
out_arrays = {}
with SharedMemoryContext() as batch_shm_ctx:
# The batch shared memory context exists only as long as it takes for the parent process
# to read everything, after which it cleans everything up again
for col, cast_dtype in columns_to_np_types.items():
# Everything has to be np.array for this to work, even if the collate_fn is giving us tf.Tensor
array = batch[col]
if col in string_columns:
# We can't send unicode arrays over shared memory, so we convert to single chars ("U1")
# which have a fixed width of 4 bytes. The parent process will convert these back to strings.
array = array.view("U1").reshape(array.shape + (-1,))
shape_arrays[col][:] = array.shape
out_arrays[col] = batch_shm_ctx.get_array(
f"{worker_name}_{col}", shape=array.shape, dtype=cast_dtype, create=True
)
out_arrays[col][:] = array
array_ready_event.set()
array_loaded_event.wait()
array_loaded_event.clear()
with SharedMemoryContext() as shm_ctx:
shape_arrays = {
col: shm_ctx.get_array(f"{worker_name}_{col}_shape", shape=(rank,), dtype=np.int64, create=False)
for col, rank in columns_to_ranks.items()
}
for batch in indices:
send_batch_to_parent(batch)
if extra_batch is not None:
send_batch_to_parent(extra_batch)
# Now we send a batsignal to the parent process that we're done
for col, array in shape_arrays.items():
array[:] = -1
array_ready_event.set()
@staticmethod
def distribute_batches(dataset, batch_size, drop_remainder, num_workers, shuffle):
indices = np.arange(len(dataset))
if shuffle:
np.random.shuffle(indices)
num_samples = len(indices)
# We distribute the batches so that reading from the workers in round-robin order yields the exact
# order specified in indices. This is only important when shuffle is False, but we do it regardless.
incomplete_batch_cutoff = num_samples - (num_samples % batch_size)
indices, last_incomplete_batch = np.split(indices, [incomplete_batch_cutoff])
if drop_remainder or len(last_incomplete_batch) == 0:
last_incomplete_batch = None
indices = indices.reshape(-1, batch_size)
num_batches = len(indices)
final_batches_cutoff = num_batches - (num_batches % num_workers)
indices, final_batches = np.split(indices, [final_batches_cutoff])
indices = indices.reshape(-1, num_workers, batch_size)
per_worker_indices = np.split(indices, indices.shape[1], axis=1)
per_worker_indices = [np.squeeze(worker_indices, 1) for worker_indices in per_worker_indices]
# Distribute the final batches to the first workers
for i in range(len(final_batches)):
# len(final_batches) can be zero, and is always less than num_workers
per_worker_indices[i] = np.concatenate([per_worker_indices[i], final_batches[i].reshape(1, -1)], axis=0)
# Add the last incomplete batch to the next worker, which might be the first worker
if last_incomplete_batch is not None:
incomplete_batch_worker_idx = len(final_batches)
else:
incomplete_batch_worker_idx = None
return per_worker_indices, last_incomplete_batch, incomplete_batch_worker_idx
def multiprocess_dataset_to_tf(
dataset,
cols_to_retain,
collate_fn,
collate_fn_args,
columns_to_np_types,
output_signature,
shuffle,
batch_size,
drop_remainder,
num_workers,
):
"""Create a tf.data.Dataset from the underlying Dataset. This is a multi-process method - the single-process
equivalent is dataset_to_tf.
Args:
dataset (`Dataset`): Dataset to wrap with tf.data.Dataset.
cols_to_retain (`List[str]`): Dataset column(s) to load in the
tf.data.Dataset. It is acceptable to include column names that are created by the `collate_fn` and
that do not exist in the original dataset.
collate_fn(`Callable`): A function or callable object (such as a `DataCollator`) that will collate
lists of samples into a batch.
collate_fn_args (`Dict`): A `dict` of keyword arguments to be passed to the
`collate_fn`. Can be empty.
columns_to_np_types (`Dict[str, np.dtype]`): A `dict` mapping column names to numpy dtypes.
output_signature (`Dict[str, tf.TensorSpec]`): A `dict` mapping column names to
`tf.TensorSpec` objects.
shuffle(`bool`): Shuffle the dataset order when loading. Recommended True for training, False for
validation/evaluation.
batch_size (`int`, default `None`): Size of batches to load from the dataset. Defaults to `None`, which implies that
the dataset won't be batched, but the returned dataset can be batched later with `tf_dataset.batch(batch_size)`.
drop_remainder(`bool`, default `None`): Drop the last incomplete batch when loading. If not provided,
defaults to the same setting as shuffle.
num_workers (`int`): Number of workers to use for loading the dataset. Should be >= 1.
Returns:
`tf.data.Dataset`
"""
if config.TF_AVAILABLE:
import tensorflow as tf
else:
raise ImportError("Called a Tensorflow-specific function but Tensorflow is not installed.")
data_generator = NumpyMultiprocessingGenerator(
dataset=dataset,
cols_to_retain=cols_to_retain,
collate_fn=collate_fn,
collate_fn_args=collate_fn_args,
columns_to_np_types=columns_to_np_types,
output_signature=output_signature,
shuffle=shuffle,
batch_size=batch_size,
drop_remainder=drop_remainder,
num_workers=num_workers,
)
tf_dataset = tf.data.Dataset.from_generator(data_generator, output_signature=output_signature)
if drop_remainder:
dataset_length = int(len(dataset) // batch_size)
else:
dataset_length = int(ceil(len(dataset) / batch_size))
return tf_dataset.apply(tf.data.experimental.assert_cardinality(dataset_length))
|
datasets/src/datasets/utils/tf_utils.py/0
|
{
"file_path": "datasets/src/datasets/utils/tf_utils.py",
"repo_id": "datasets",
"token_count": 10958
}
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import textwrap
import pyarrow as pa
import pytest
from datasets import Features, Value
from datasets.builder import InvalidConfigName
from datasets.data_files import DataFilesList
from datasets.packaged_modules.json.json import Json, JsonConfig
@pytest.fixture
def jsonl_file(tmp_path):
filename = tmp_path / "file.jsonl"
data = textwrap.dedent(
"""\
{"col_1": -1}
{"col_1": 1, "col_2": 2}
{"col_1": 10, "col_2": 20}
"""
)
with open(filename, "w") as f:
f.write(data)
return str(filename)
@pytest.fixture
def jsonl_file_utf16_encoded(tmp_path):
filename = tmp_path / "file_utf16_encoded.jsonl"
data = textwrap.dedent(
"""\
{"col_1": -1}
{"col_1": 1, "col_2": 2}
{"col_1": 10, "col_2": 20}
"""
)
with open(filename, "w", encoding="utf-16") as f:
f.write(data)
return str(filename)
@pytest.fixture
def json_file_with_list_of_dicts(tmp_path):
filename = tmp_path / "file_with_list_of_dicts.json"
data = textwrap.dedent(
"""\
[
{"col_1": -1},
{"col_1": 1, "col_2": 2},
{"col_1": 10, "col_2": 20}
]
"""
)
with open(filename, "w") as f:
f.write(data)
return str(filename)
@pytest.fixture
def json_file_with_list_of_strings(tmp_path):
filename = tmp_path / "file_with_list_of_strings.json"
data = textwrap.dedent(
"""\
[
"First text.",
"Second text.",
"Third text."
]
"""
)
with open(filename, "w") as f:
f.write(data)
return str(filename)
@pytest.fixture
def json_file_with_list_of_dicts_field(tmp_path):
filename = tmp_path / "file_with_list_of_dicts_field.json"
data = textwrap.dedent(
"""\
{
"field1": 1,
"field2": "aabb",
"field3": [
{"col_1": -1},
{"col_1": 1, "col_2": 2},
{"col_1": 10, "col_2": 20}
]
}
"""
)
with open(filename, "w") as f:
f.write(data)
return str(filename)
@pytest.fixture
def json_file_with_list_of_strings_field(tmp_path):
path = tmp_path / "file.json"
data = textwrap.dedent(
"""\
{
"field1": 1,
"field2": "aabb",
"field3": [
"First text.",
"Second text.",
"Third text."
]
}
"""
)
with open(path, "w") as f:
f.write(data)
return str(path)
@pytest.fixture
def json_file_with_dict_of_lists_field(tmp_path):
path = tmp_path / "file.json"
data = textwrap.dedent(
"""\
{
"field1": 1,
"field2": "aabb",
"field3": {
"col_1": [-1, 1, 10],
"col_2": [null, 2, 20]
}
}
"""
)
with open(path, "w") as f:
f.write(data)
return str(path)
@pytest.fixture
def json_file_with_list_of_dicts_with_sorted_columns(tmp_path):
path = tmp_path / "file.json"
data = textwrap.dedent(
"""\
[
{"ID": 0, "Language": "Language-0", "Topic": "Topic-0"},
{"ID": 1, "Language": "Language-1", "Topic": "Topic-1"},
{"ID": 2, "Language": "Language-2", "Topic": "Topic-2"}
]
"""
)
with open(path, "w") as f:
f.write(data)
return str(path)
@pytest.fixture
def json_file_with_list_of_dicts_with_sorted_columns_field(tmp_path):
path = tmp_path / "file.json"
data = textwrap.dedent(
"""\
{
"field1": 1,
"field2": "aabb",
"field3": [
{"ID": 0, "Language": "Language-0", "Topic": "Topic-0"},
{"ID": 1, "Language": "Language-1", "Topic": "Topic-1"},
{"ID": 2, "Language": "Language-2", "Topic": "Topic-2"}
]
}
"""
)
with open(path, "w") as f:
f.write(data)
return str(path)
def test_config_raises_when_invalid_name() -> None:
with pytest.raises(InvalidConfigName, match="Bad characters"):
_ = JsonConfig(name="name-with-*-invalid-character")
@pytest.mark.parametrize("data_files", ["str_path", ["str_path"], DataFilesList(["str_path"], [()])])
def test_config_raises_when_invalid_data_files(data_files) -> None:
with pytest.raises(ValueError, match="Expected a DataFilesDict"):
_ = JsonConfig(name="name", data_files=data_files)
@pytest.mark.parametrize(
"file_fixture, config_kwargs",
[
("jsonl_file", {}),
("jsonl_file_utf16_encoded", {"encoding": "utf-16"}),
("json_file_with_list_of_dicts", {}),
("json_file_with_list_of_dicts_field", {"field": "field3"}),
("json_file_with_list_of_strings", {}),
("json_file_with_list_of_strings_field", {"field": "field3"}),
("json_file_with_dict_of_lists_field", {"field": "field3"}),
],
)
def test_json_generate_tables(file_fixture, config_kwargs, request):
json = Json(**config_kwargs)
generator = json._generate_tables([[request.getfixturevalue(file_fixture)]])
pa_table = pa.concat_tables([table for _, table in generator])
if "list_of_strings" in file_fixture:
expected = {"text": ["First text.", "Second text.", "Third text."]}
else:
expected = {"col_1": [-1, 1, 10], "col_2": [None, 2, 20]}
assert pa_table.to_pydict() == expected
@pytest.mark.parametrize(
"file_fixture, config_kwargs",
[
(
"jsonl_file",
{"features": Features({"col_1": Value("int64"), "col_2": Value("int64"), "missing_col": Value("string")})},
),
(
"json_file_with_list_of_dicts",
{"features": Features({"col_1": Value("int64"), "col_2": Value("int64"), "missing_col": Value("string")})},
),
(
"json_file_with_list_of_dicts_field",
{
"field": "field3",
"features": Features(
{"col_1": Value("int64"), "col_2": Value("int64"), "missing_col": Value("string")}
),
},
),
],
)
def test_json_generate_tables_with_missing_features(file_fixture, config_kwargs, request):
json = Json(**config_kwargs)
generator = json._generate_tables([[request.getfixturevalue(file_fixture)]])
pa_table = pa.concat_tables([table for _, table in generator])
assert pa_table.to_pydict() == {"col_1": [-1, 1, 10], "col_2": [None, 2, 20], "missing_col": [None, None, None]}
@pytest.mark.parametrize(
"file_fixture, config_kwargs",
[
("json_file_with_list_of_dicts_with_sorted_columns", {}),
("json_file_with_list_of_dicts_with_sorted_columns_field", {"field": "field3"}),
],
)
def test_json_generate_tables_with_sorted_columns(file_fixture, config_kwargs, request):
builder = Json(**config_kwargs)
generator = builder._generate_tables([[request.getfixturevalue(file_fixture)]])
pa_table = pa.concat_tables([table for _, table in generator])
assert pa_table.column_names == ["ID", "Language", "Topic"]
|
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|
{
"file_path": "datasets/tests/packaged_modules/test_json.py",
"repo_id": "datasets",
"token_count": 3594
}
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|
import warnings
import pytest
import datasets.utils.deprecation_utils
from datasets.exceptions import (
ChecksumVerificationError,
ExpectedMoreDownloadedFilesError,
ExpectedMoreSplitsError,
NonMatchingChecksumError,
NonMatchingSplitsSizesError,
SplitsVerificationError,
UnexpectedDownloadedFileError,
UnexpectedSplitsError,
)
@pytest.mark.parametrize(
"error",
[
ChecksumVerificationError,
UnexpectedDownloadedFileError,
ExpectedMoreDownloadedFilesError,
NonMatchingChecksumError,
SplitsVerificationError,
UnexpectedSplitsError,
ExpectedMoreSplitsError,
NonMatchingSplitsSizesError,
],
)
def test_error_not_deprecated(error, monkeypatch):
monkeypatch.setattr(datasets.utils.deprecation_utils, "_emitted_deprecation_warnings", set())
with warnings.catch_warnings():
warnings.simplefilter("error")
error()
|
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|
{
"file_path": "datasets/tests/test_exceptions.py",
"repo_id": "datasets",
"token_count": 360
}
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|
import pytest
from datasets.parallel import ParallelBackendConfig, parallel_backend
from datasets.utils.py_utils import map_nested
from .utils import require_dill_gt_0_3_2, require_joblibspark, require_not_windows
def add_one(i): # picklable for multiprocessing
return i + 1
@require_dill_gt_0_3_2
@require_joblibspark
@require_not_windows
def test_parallel_backend_input():
with parallel_backend("spark"):
assert ParallelBackendConfig.backend_name == "spark"
lst = [1, 2, 3]
with pytest.raises(ValueError):
with parallel_backend("unsupported backend"):
map_nested(add_one, lst, num_proc=2)
with pytest.raises(ValueError):
with parallel_backend("unsupported backend"):
map_nested(add_one, lst, num_proc=-1)
@require_dill_gt_0_3_2
@require_joblibspark
@require_not_windows
@pytest.mark.parametrize("num_proc", [2, -1])
def test_parallel_backend_map_nested(num_proc):
s1 = [1, 2]
s2 = {"a": 1, "b": 2}
s3 = {"a": [1, 2], "b": [3, 4]}
s4 = {"a": {"1": 1}, "b": 2}
s5 = {"a": 1, "b": 2, "c": 3, "d": 4}
expected_map_nested_s1 = [2, 3]
expected_map_nested_s2 = {"a": 2, "b": 3}
expected_map_nested_s3 = {"a": [2, 3], "b": [4, 5]}
expected_map_nested_s4 = {"a": {"1": 2}, "b": 3}
expected_map_nested_s5 = {"a": 2, "b": 3, "c": 4, "d": 5}
with parallel_backend("spark"):
assert map_nested(add_one, s1, num_proc=num_proc) == expected_map_nested_s1
assert map_nested(add_one, s2, num_proc=num_proc) == expected_map_nested_s2
assert map_nested(add_one, s3, num_proc=num_proc) == expected_map_nested_s3
assert map_nested(add_one, s4, num_proc=num_proc) == expected_map_nested_s4
assert map_nested(add_one, s5, num_proc=num_proc) == expected_map_nested_s5
|
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|
{
"file_path": "datasets/tests/test_parallel.py",
"repo_id": "datasets",
"token_count": 825
}
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|
# Live 1: How the course work, Q&A, and playing with Huggy
In this first live stream, we explained how the course work (scope, units, challenges, and more) and answered your questions.
And finally, we saw some LunarLander agents you've trained and play with your Huggies 🐶
<Youtube id="JeJIswxyrsM" />
To know when the next live is scheduled **check the discord server**. We will also send **you an email**. If you can't participate, don't worry, we record the live sessions.
|
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|
{
"file_path": "deep-rl-class/units/en/live1/live1.mdx",
"repo_id": "deep-rl-class",
"token_count": 131
}
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# What is Reinforcement Learning? [[what-is-reinforcement-learning]]
To understand Reinforcement Learning, let’s start with the big picture.
## The big picture [[the-big-picture]]
The idea behind Reinforcement Learning is that an agent (an AI) will learn from the environment by **interacting with it** (through trial and error) and **receiving rewards** (negative or positive) as feedback for performing actions.
Learning from interactions with the environment **comes from our natural experiences.**
For instance, imagine putting your little brother in front of a video game he never played, giving him a controller, and leaving him alone.
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit1/Illustration_1.jpg" alt="Illustration_1" width="100%">
Your brother will interact with the environment (the video game) by pressing the right button (action). He got a coin, that’s a +1 reward. It’s positive, he just understood that in this game **he must get the coins.**
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit1/Illustration_2.jpg" alt="Illustration_2" width="100%">
But then, **he presses the right button again** and he touches an enemy. He just died, so that's a -1 reward.
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit1/Illustration_3.jpg" alt="Illustration_3" width="100%">
By interacting with his environment through trial and error, your little brother understands that **he needs to get coins in this environment but avoid the enemies.**
**Without any supervision**, the child will get better and better at playing the game.
That’s how humans and animals learn, **through interaction.** Reinforcement Learning is just a **computational approach of learning from actions.**
### A formal definition [[a-formal-definition]]
We can now make a formal definition:
<Tip>
Reinforcement learning is a framework for solving control tasks (also called decision problems) by building agents that learn from the environment by interacting with it through trial and error and receiving rewards (positive or negative) as unique feedback.
</Tip>
But how does Reinforcement Learning work?
|
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|
{
"file_path": "deep-rl-class/units/en/unit1/what-is-rl.mdx",
"repo_id": "deep-rl-class",
"token_count": 624
}
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# Additional Readings [[additional-readings]]
These are **optional readings** if you want to go deeper.
- [Foundations of Deep RL Series, L2 Deep Q-Learning by Pieter Abbeel](https://youtu.be/Psrhxy88zww)
- [Playing Atari with Deep Reinforcement Learning](https://arxiv.org/abs/1312.5602)
- [Double Deep Q-Learning](https://papers.nips.cc/paper/2010/hash/091d584fced301b442654dd8c23b3fc9-Abstract.html)
- [Prioritized Experience Replay](https://arxiv.org/abs/1511.05952)
|
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|
{
"file_path": "deep-rl-class/units/en/unit3/additional-readings.mdx",
"repo_id": "deep-rl-class",
"token_count": 163
}
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# Diving deeper into policy-gradient methods
## Getting the big picture
We just learned that policy-gradient methods aim to find parameters \\( \theta \\) that **maximize the expected return**.
The idea is that we have a *parameterized stochastic policy*. In our case, a neural network outputs a probability distribution over actions. The probability of taking each action is also called the *action preference*.
If we take the example of CartPole-v1:
- As input, we have a state.
- As output, we have a probability distribution over actions at that state.
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/policy_based.png" alt="Policy based" />
Our goal with policy-gradient is to **control the probability distribution of actions** by tuning the policy such that **good actions (that maximize the return) are sampled more frequently in the future.**
Each time the agent interacts with the environment, we tweak the parameters such that good actions will be sampled more likely in the future.
But **how are we going to optimize the weights using the expected return**?
The idea is that we're going to **let the agent interact during an episode**. And if we win the episode, we consider that each action taken was good and must be more sampled in the future
since they lead to win.
So for each state-action pair, we want to increase the \\(P(a|s)\\): the probability of taking that action at that state. Or decrease if we lost.
The Policy-gradient algorithm (simplified) looks like this:
<figure class="image table text-center m-0 w-full">
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/pg_bigpicture.jpg" alt="Policy Gradient Big Picture"/>
</figure>
Now that we got the big picture, let's dive deeper into policy-gradient methods.
## Diving deeper into policy-gradient methods
We have our stochastic policy \\(\pi\\) which has a parameter \\(\theta\\). This \\(\pi\\), given a state, **outputs a probability distribution of actions**.
<figure class="image table text-center m-0 w-full">
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/stochastic_policy.png" alt="Policy"/>
</figure>
Where \\(\pi_\theta(a_t|s_t)\\) is the probability of the agent selecting action \\(a_t\\) from state \\(s_t\\) given our policy.
**But how do we know if our policy is good?** We need to have a way to measure it. To know that, we define a score/objective function called \\(J(\theta)\\).
### The objective function
The *objective function* gives us the **performance of the agent** given a trajectory (state action sequence without considering reward (contrary to an episode)), and it outputs the *expected cumulative reward*.
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/objective.jpg" alt="Return"/>
Let's give some more details on this formula:
- The *expected return* (also called expected cumulative reward), is the weighted average (where the weights are given by \\(P(\tau;\theta)\\) of all possible values that the return \\(R(\tau)\\) can take).
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/expected_reward.png" alt="Return"/>
- \\(R(\tau)\\) : Return from an arbitrary trajectory. To take this quantity and use it to calculate the expected return, we need to multiply it by the probability of each possible trajectory.
- \\(P(\tau;\theta)\\) : Probability of each possible trajectory \\(\tau\\) (that probability depends on \\(\theta\\) since it defines the policy that it uses to select the actions of the trajectory which has an impact of the states visited).
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/probability.png" alt="Probability"/>
- \\(J(\theta)\\) : Expected return, we calculate it by summing for all trajectories, the probability of taking that trajectory given \\(\theta \\) multiplied by the return of this trajectory.
Our objective then is to maximize the expected cumulative reward by finding the \\(\theta \\) that will output the best action probability distributions:
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/max_objective.png" alt="Max objective"/>
## Gradient Ascent and the Policy-gradient Theorem
Policy-gradient is an optimization problem: we want to find the values of \\(\theta\\) that maximize our objective function \\(J(\theta)\\), so we need to use **gradient-ascent**. It's the inverse of *gradient-descent* since it gives the direction of the steepest increase of \\(J(\theta)\\).
(If you need a refresher on the difference between gradient descent and gradient ascent [check this](https://www.baeldung.com/cs/gradient-descent-vs-ascent) and [this](https://stats.stackexchange.com/questions/258721/gradient-ascent-vs-gradient-descent-in-logistic-regression)).
Our update step for gradient-ascent is:
\\( \theta \leftarrow \theta + \alpha * \nabla_\theta J(\theta) \\)
We can repeatedly apply this update in the hopes that \\(\theta \\) converges to the value that maximizes \\(J(\theta)\\).
However, there are two problems with computing the derivative of \\(J(\theta)\\):
1. We can't calculate the true gradient of the objective function since it requires calculating the probability of each possible trajectory, which is computationally super expensive.
So we want to **calculate a gradient estimation with a sample-based estimate (collect some trajectories)**.
2. We have another problem that I explain in the next optional section. To differentiate this objective function, we need to differentiate the state distribution, called the Markov Decision Process dynamics. This is attached to the environment. It gives us the probability of the environment going into the next state, given the current state and the action taken by the agent. The problem is that we can't differentiate it because we might not know about it.
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/probability.png" alt="Probability"/>
Fortunately we're going to use a solution called the Policy Gradient Theorem that will help us to reformulate the objective function into a differentiable function that does not involve the differentiation of the state distribution.
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/policy_gradient_theorem.png" alt="Policy Gradient"/>
If you want to understand how we derive this formula for approximating the gradient, check out the next (optional) section.
## The Reinforce algorithm (Monte Carlo Reinforce)
The Reinforce algorithm, also called Monte-Carlo policy-gradient, is a policy-gradient algorithm that **uses an estimated return from an entire episode to update the policy parameter** \\(\theta\\):
In a loop:
- Use the policy \\(\pi_\theta\\) to collect an episode \\(\tau\\)
- Use the episode to estimate the gradient \\(\hat{g} = \nabla_\theta J(\theta)\\)
<figure class="image table text-center m-0 w-full">
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/policy_gradient_one.png" alt="Policy Gradient"/>
</figure>
- Update the weights of the policy: \\(\theta \leftarrow \theta + \alpha \hat{g}\\)
We can interpret this update as follows:
- \\(\nabla_\theta log \pi_\theta(a_t|s_t)\\) is the direction of **steepest increase of the (log) probability** of selecting action \\(a_t\\) from state \\(s_t\\).
This tells us **how we should change the weights of policy** if we want to increase/decrease the log probability of selecting action \\(a_t\\) at state \\(s_t\\).
- \\(R(\tau)\\): is the scoring function:
- If the return is high, it will **push up the probabilities** of the (state, action) combinations.
- Otherwise, if the return is low, it will **push down the probabilities** of the (state, action) combinations.
We can also **collect multiple episodes (trajectories)** to estimate the gradient:
<figure class="image table text-center m-0 w-full">
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit6/policy_gradient_multiple.png" alt="Policy Gradient"/>
</figure>
|
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{
"file_path": "deep-rl-class/units/en/unit4/policy-gradient.mdx",
"repo_id": "deep-rl-class",
"token_count": 2402
}
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# Introduction [[introduction]]
<img src="https://huggingface.co/datasets/huggingface-deep-rl-course/course-images/resolve/main/en/unit8/thumbnail.png" alt="Thumbnail"/>
In unit 4, we learned about our first Policy-Based algorithm called **Reinforce**.
In Policy-Based methods, **we aim to optimize the policy directly without using a value function**. More precisely, Reinforce is part of a subclass of *Policy-Based Methods* called *Policy-Gradient methods*. This subclass optimizes the policy directly by **estimating the weights of the optimal policy using Gradient Ascent**.
We saw that Reinforce worked well. However, because we use Monte-Carlo sampling to estimate return (we use an entire episode to calculate the return), **we have significant variance in policy gradient estimation**.
Remember that the policy gradient estimation is **the direction of the steepest increase in return**. In other words, how to update our policy weights so that actions that lead to good returns have a higher probability of being taken. The Monte Carlo variance, which we will further study in this unit, **leads to slower training since we need a lot of samples to mitigate it**.
So today we'll study **Actor-Critic methods**, a hybrid architecture combining value-based and Policy-Based methods that helps to stabilize the training by reducing the variance using:
- *An Actor* that controls **how our agent behaves** (Policy-Based method)
- *A Critic* that measures **how good the taken action is** (Value-Based method)
We'll study one of these hybrid methods, Advantage Actor Critic (A2C), **and train our agent using Stable-Baselines3 in robotic environments**. We'll train:
- A robotic arm 🦾 to move to the correct position.
Sound exciting? Let's get started!
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"token_count": 427
}
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# Generalization in Reinforcement Learning
Generalization plays a pivotal role in the realm of Reinforcement Learning. While **RL algorithms demonstrate good performance in controlled environments**, the real world presents a **unique challenge due to its non-stationary and open-ended nature**.
As a result, the development of RL algorithms that stay robust in the face of environmental variations, coupled with the capability to transfer and adapt to uncharted yet analogous tasks and settings, becomes fundamental for real world application of RL.
If you're interested to dive deeper into this research subject, we recommend exploring the following resource:
- [Generalization in Reinforcement Learning by Robert Kirk](https://robertkirk.github.io/2022/01/17/generalisation-in-reinforcement-learning-survey.html): this comprehensive survey provides an insightful **overview of the concept of generalization in RL**, making it an excellent starting point for your exploration.
- [Improving Generalization in Reinforcement Learning using Policy Similarity Embeddings](https://blog.research.google/2021/09/improving-generalization-in.html?m=1)
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{
"file_path": "deep-rl-class/units/en/unitbonus3/generalisation.mdx",
"repo_id": "deep-rl-class",
"token_count": 250
}
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import argparse
import csv
import gc
import os
from dataclasses import dataclass
from typing import Dict, List, Union
import torch
import torch.utils.benchmark as benchmark
GITHUB_SHA = os.getenv("GITHUB_SHA", None)
BENCHMARK_FIELDS = [
"pipeline_cls",
"ckpt_id",
"batch_size",
"num_inference_steps",
"model_cpu_offload",
"run_compile",
"time (secs)",
"memory (gbs)",
"actual_gpu_memory (gbs)",
"github_sha",
]
PROMPT = "ghibli style, a fantasy landscape with castles"
BASE_PATH = os.getenv("BASE_PATH", ".")
TOTAL_GPU_MEMORY = float(os.getenv("TOTAL_GPU_MEMORY", torch.cuda.get_device_properties(0).total_memory / (1024**3)))
REPO_ID = "diffusers/benchmarks"
FINAL_CSV_FILE = "collated_results.csv"
@dataclass
class BenchmarkInfo:
time: float
memory: float
def flush():
"""Wipes off memory."""
gc.collect()
torch.cuda.empty_cache()
torch.cuda.reset_max_memory_allocated()
torch.cuda.reset_peak_memory_stats()
def bytes_to_giga_bytes(bytes):
return f"{(bytes / 1024 / 1024 / 1024):.3f}"
def benchmark_fn(f, *args, **kwargs):
t0 = benchmark.Timer(
stmt="f(*args, **kwargs)",
globals={"args": args, "kwargs": kwargs, "f": f},
num_threads=torch.get_num_threads(),
)
return f"{(t0.blocked_autorange().mean):.3f}"
def generate_csv_dict(
pipeline_cls: str, ckpt: str, args: argparse.Namespace, benchmark_info: BenchmarkInfo
) -> Dict[str, Union[str, bool, float]]:
"""Packs benchmarking data into a dictionary for latter serialization."""
data_dict = {
"pipeline_cls": pipeline_cls,
"ckpt_id": ckpt,
"batch_size": args.batch_size,
"num_inference_steps": args.num_inference_steps,
"model_cpu_offload": args.model_cpu_offload,
"run_compile": args.run_compile,
"time (secs)": benchmark_info.time,
"memory (gbs)": benchmark_info.memory,
"actual_gpu_memory (gbs)": f"{(TOTAL_GPU_MEMORY):.3f}",
"github_sha": GITHUB_SHA,
}
return data_dict
def write_to_csv(file_name: str, data_dict: Dict[str, Union[str, bool, float]]):
"""Serializes a dictionary into a CSV file."""
with open(file_name, mode="w", newline="") as csvfile:
writer = csv.DictWriter(csvfile, fieldnames=BENCHMARK_FIELDS)
writer.writeheader()
writer.writerow(data_dict)
def collate_csv(input_files: List[str], output_file: str):
"""Collates multiple identically structured CSVs into a single CSV file."""
with open(output_file, mode="w", newline="") as outfile:
writer = csv.DictWriter(outfile, fieldnames=BENCHMARK_FIELDS)
writer.writeheader()
for file in input_files:
with open(file, mode="r") as infile:
reader = csv.DictReader(infile)
for row in reader:
writer.writerow(row)
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{
"file_path": "diffusers/benchmarks/utils.py",
"repo_id": "diffusers",
"token_count": 1254
}
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<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Attention Processor
An attention processor is a class for applying different types of attention mechanisms.
## AttnProcessor
[[autodoc]] models.attention_processor.AttnProcessor
## AttnProcessor2_0
[[autodoc]] models.attention_processor.AttnProcessor2_0
## AttnAddedKVProcessor
[[autodoc]] models.attention_processor.AttnAddedKVProcessor
## AttnAddedKVProcessor2_0
[[autodoc]] models.attention_processor.AttnAddedKVProcessor2_0
## CrossFrameAttnProcessor
[[autodoc]] pipelines.text_to_video_synthesis.pipeline_text_to_video_zero.CrossFrameAttnProcessor
## CustomDiffusionAttnProcessor
[[autodoc]] models.attention_processor.CustomDiffusionAttnProcessor
## CustomDiffusionAttnProcessor2_0
[[autodoc]] models.attention_processor.CustomDiffusionAttnProcessor2_0
## CustomDiffusionXFormersAttnProcessor
[[autodoc]] models.attention_processor.CustomDiffusionXFormersAttnProcessor
## FusedAttnProcessor2_0
[[autodoc]] models.attention_processor.FusedAttnProcessor2_0
## SlicedAttnProcessor
[[autodoc]] models.attention_processor.SlicedAttnProcessor
## SlicedAttnAddedKVProcessor
[[autodoc]] models.attention_processor.SlicedAttnAddedKVProcessor
## XFormersAttnProcessor
[[autodoc]] models.attention_processor.XFormersAttnProcessor
## AttnProcessorNPU
[[autodoc]] models.attention_processor.AttnProcessorNPU
|
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{
"file_path": "diffusers/docs/source/en/api/attnprocessor.md",
"repo_id": "diffusers",
"token_count": 587
}
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<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License. -->
# AutoencoderKLCogVideoX
The 3D variational autoencoder (VAE) model with KL loss used in [CogVideoX](https://github.com/THUDM/CogVideo) was introduced in [CogVideoX: Text-to-Video Diffusion Models with An Expert Transformer](https://github.com/THUDM/CogVideo/blob/main/resources/CogVideoX.pdf) by Tsinghua University & ZhipuAI.
The model can be loaded with the following code snippet.
```python
from diffusers import AutoencoderKLCogVideoX
vae = AutoencoderKLCogVideoX.from_pretrained("THUDM/CogVideoX-2b", subfolder="vae", torch_dtype=torch.float16).to("cuda")
```
## AutoencoderKLCogVideoX
[[autodoc]] AutoencoderKLCogVideoX
- decode
- encode
- all
## AutoencoderKLOutput
[[autodoc]] models.autoencoders.autoencoder_kl.AutoencoderKLOutput
## DecoderOutput
[[autodoc]] models.autoencoders.vae.DecoderOutput
|
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{
"file_path": "diffusers/docs/source/en/api/models/autoencoderkl_cogvideox.md",
"repo_id": "diffusers",
"token_count": 450
}
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<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# DDIM
[Denoising Diffusion Implicit Models](https://huggingface.co/papers/2010.02502) (DDIM) by Jiaming Song, Chenlin Meng and Stefano Ermon.
The abstract from the paper is:
*Denoising diffusion probabilistic models (DDPMs) have achieved high quality image generation without adversarial training, yet they require simulating a Markov chain for many steps to produce a sample. To accelerate sampling, we present denoising diffusion implicit models (DDIMs), a more efficient class of iterative implicit probabilistic models with the same training procedure as DDPMs. In DDPMs, the generative process is defined as the reverse of a Markovian diffusion process. We construct a class of non-Markovian diffusion processes that lead to the same training objective, but whose reverse process can be much faster to sample from. We empirically demonstrate that DDIMs can produce high quality samples 10× to 50× faster in terms of wall-clock time compared to DDPMs, allow us to trade off computation for sample quality, and can perform semantically meaningful image interpolation directly in the latent space.*
The original codebase can be found at [ermongroup/ddim](https://github.com/ermongroup/ddim).
## DDIMPipeline
[[autodoc]] DDIMPipeline
- all
- __call__
## ImagePipelineOutput
[[autodoc]] pipelines.ImagePipelineOutput
|
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|
{
"file_path": "diffusers/docs/source/en/api/pipelines/ddim.md",
"repo_id": "diffusers",
"token_count": 477
}
| 98
|
<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
[[open-in-colab]]
# Quicktour
Diffusion models are trained to denoise random Gaussian noise step-by-step to generate a sample of interest, such as an image or audio. This has sparked a tremendous amount of interest in generative AI, and you have probably seen examples of diffusion generated images on the internet. 🧨 Diffusers is a library aimed at making diffusion models widely accessible to everyone.
Whether you're a developer or an everyday user, this quicktour will introduce you to 🧨 Diffusers and help you get up and generating quickly! There are three main components of the library to know about:
* The [`DiffusionPipeline`] is a high-level end-to-end class designed to rapidly generate samples from pretrained diffusion models for inference.
* Popular pretrained [model](./api/models) architectures and modules that can be used as building blocks for creating diffusion systems.
* Many different [schedulers](./api/schedulers/overview) - algorithms that control how noise is added for training, and how to generate denoised images during inference.
The quicktour will show you how to use the [`DiffusionPipeline`] for inference, and then walk you through how to combine a model and scheduler to replicate what's happening inside the [`DiffusionPipeline`].
<Tip>
The quicktour is a simplified version of the introductory 🧨 Diffusers [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/diffusers_intro.ipynb) to help you get started quickly. If you want to learn more about 🧨 Diffusers' goal, design philosophy, and additional details about its core API, check out the notebook!
</Tip>
Before you begin, make sure you have all the necessary libraries installed:
```py
# uncomment to install the necessary libraries in Colab
#!pip install --upgrade diffusers accelerate transformers
```
- [🤗 Accelerate](https://huggingface.co/docs/accelerate/index) speeds up model loading for inference and training.
- [🤗 Transformers](https://huggingface.co/docs/transformers/index) is required to run the most popular diffusion models, such as [Stable Diffusion](https://huggingface.co/docs/diffusers/api/pipelines/stable_diffusion/overview).
## DiffusionPipeline
The [`DiffusionPipeline`] is the easiest way to use a pretrained diffusion system for inference. It is an end-to-end system containing the model and the scheduler. You can use the [`DiffusionPipeline`] out-of-the-box for many tasks. Take a look at the table below for some supported tasks, and for a complete list of supported tasks, check out the [🧨 Diffusers Summary](./api/pipelines/overview#diffusers-summary) table.
| **Task** | **Description** | **Pipeline**
|------------------------------|--------------------------------------------------------------------------------------------------------------|-----------------|
| Unconditional Image Generation | generate an image from Gaussian noise | [unconditional_image_generation](./using-diffusers/unconditional_image_generation) |
| Text-Guided Image Generation | generate an image given a text prompt | [conditional_image_generation](./using-diffusers/conditional_image_generation) |
| Text-Guided Image-to-Image Translation | adapt an image guided by a text prompt | [img2img](./using-diffusers/img2img) |
| Text-Guided Image-Inpainting | fill the masked part of an image given the image, the mask and a text prompt | [inpaint](./using-diffusers/inpaint) |
| Text-Guided Depth-to-Image Translation | adapt parts of an image guided by a text prompt while preserving structure via depth estimation | [depth2img](./using-diffusers/depth2img) |
Start by creating an instance of a [`DiffusionPipeline`] and specify which pipeline checkpoint you would like to download.
You can use the [`DiffusionPipeline`] for any [checkpoint](https://huggingface.co/models?library=diffusers&sort=downloads) stored on the Hugging Face Hub.
In this quicktour, you'll load the [`stable-diffusion-v1-5`](https://huggingface.co/runwayml/stable-diffusion-v1-5) checkpoint for text-to-image generation.
<Tip warning={true}>
For [Stable Diffusion](https://huggingface.co/CompVis/stable-diffusion) models, please carefully read the [license](https://huggingface.co/spaces/CompVis/stable-diffusion-license) first before running the model. 🧨 Diffusers implements a [`safety_checker`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/pipelines/stable_diffusion/safety_checker.py) to prevent offensive or harmful content, but the model's improved image generation capabilities can still produce potentially harmful content.
</Tip>
Load the model with the [`~DiffusionPipeline.from_pretrained`] method:
```python
>>> from diffusers import DiffusionPipeline
>>> pipeline = DiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", use_safetensors=True)
```
The [`DiffusionPipeline`] downloads and caches all modeling, tokenization, and scheduling components. You'll see that the Stable Diffusion pipeline is composed of the [`UNet2DConditionModel`] and [`PNDMScheduler`] among other things:
```py
>>> pipeline
StableDiffusionPipeline {
"_class_name": "StableDiffusionPipeline",
"_diffusers_version": "0.21.4",
...,
"scheduler": [
"diffusers",
"PNDMScheduler"
],
...,
"unet": [
"diffusers",
"UNet2DConditionModel"
],
"vae": [
"diffusers",
"AutoencoderKL"
]
}
```
We strongly recommend running the pipeline on a GPU because the model consists of roughly 1.4 billion parameters.
You can move the generator object to a GPU, just like you would in PyTorch:
```python
>>> pipeline.to("cuda")
```
Now you can pass a text prompt to the `pipeline` to generate an image, and then access the denoised image. By default, the image output is wrapped in a [`PIL.Image`](https://pillow.readthedocs.io/en/stable/reference/Image.html?highlight=image#the-image-class) object.
```python
>>> image = pipeline("An image of a squirrel in Picasso style").images[0]
>>> image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/image_of_squirrel_painting.png"/>
</div>
Save the image by calling `save`:
```python
>>> image.save("image_of_squirrel_painting.png")
```
### Local pipeline
You can also use the pipeline locally. The only difference is you need to download the weights first:
```bash
!git lfs install
!git clone https://huggingface.co/runwayml/stable-diffusion-v1-5
```
Then load the saved weights into the pipeline:
```python
>>> pipeline = DiffusionPipeline.from_pretrained("./stable-diffusion-v1-5", use_safetensors=True)
```
Now, you can run the pipeline as you would in the section above.
### Swapping schedulers
Different schedulers come with different denoising speeds and quality trade-offs. The best way to find out which one works best for you is to try them out! One of the main features of 🧨 Diffusers is to allow you to easily switch between schedulers. For example, to replace the default [`PNDMScheduler`] with the [`EulerDiscreteScheduler`], load it with the [`~diffusers.ConfigMixin.from_config`] method:
```py
>>> from diffusers import EulerDiscreteScheduler
>>> pipeline = DiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", use_safetensors=True)
>>> pipeline.scheduler = EulerDiscreteScheduler.from_config(pipeline.scheduler.config)
```
Try generating an image with the new scheduler and see if you notice a difference!
In the next section, you'll take a closer look at the components - the model and scheduler - that make up the [`DiffusionPipeline`] and learn how to use these components to generate an image of a cat.
## Models
Most models take a noisy sample, and at each timestep it predicts the *noise residual* (other models learn to predict the previous sample directly or the velocity or [`v-prediction`](https://github.com/huggingface/diffusers/blob/5e5ce13e2f89ac45a0066cb3f369462a3cf1d9ef/src/diffusers/schedulers/scheduling_ddim.py#L110)), the difference between a less noisy image and the input image. You can mix and match models to create other diffusion systems.
Models are initiated with the [`~ModelMixin.from_pretrained`] method which also locally caches the model weights so it is faster the next time you load the model. For the quicktour, you'll load the [`UNet2DModel`], a basic unconditional image generation model with a checkpoint trained on cat images:
```py
>>> from diffusers import UNet2DModel
>>> repo_id = "google/ddpm-cat-256"
>>> model = UNet2DModel.from_pretrained(repo_id, use_safetensors=True)
```
To access the model parameters, call `model.config`:
```py
>>> model.config
```
The model configuration is a 🧊 frozen 🧊 dictionary, which means those parameters can't be changed after the model is created. This is intentional and ensures that the parameters used to define the model architecture at the start remain the same, while other parameters can still be adjusted during inference.
Some of the most important parameters are:
* `sample_size`: the height and width dimension of the input sample.
* `in_channels`: the number of input channels of the input sample.
* `down_block_types` and `up_block_types`: the type of down- and upsampling blocks used to create the UNet architecture.
* `block_out_channels`: the number of output channels of the downsampling blocks; also used in reverse order for the number of input channels of the upsampling blocks.
* `layers_per_block`: the number of ResNet blocks present in each UNet block.
To use the model for inference, create the image shape with random Gaussian noise. It should have a `batch` axis because the model can receive multiple random noises, a `channel` axis corresponding to the number of input channels, and a `sample_size` axis for the height and width of the image:
```py
>>> import torch
>>> torch.manual_seed(0)
>>> noisy_sample = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
>>> noisy_sample.shape
torch.Size([1, 3, 256, 256])
```
For inference, pass the noisy image and a `timestep` to the model. The `timestep` indicates how noisy the input image is, with more noise at the beginning and less at the end. This helps the model determine its position in the diffusion process, whether it is closer to the start or the end. Use the `sample` method to get the model output:
```py
>>> with torch.no_grad():
... noisy_residual = model(sample=noisy_sample, timestep=2).sample
```
To generate actual examples though, you'll need a scheduler to guide the denoising process. In the next section, you'll learn how to couple a model with a scheduler.
## Schedulers
Schedulers manage going from a noisy sample to a less noisy sample given the model output - in this case, it is the `noisy_residual`.
<Tip>
🧨 Diffusers is a toolbox for building diffusion systems. While the [`DiffusionPipeline`] is a convenient way to get started with a pre-built diffusion system, you can also choose your own model and scheduler components separately to build a custom diffusion system.
</Tip>
For the quicktour, you'll instantiate the [`DDPMScheduler`] with its [`~diffusers.ConfigMixin.from_config`] method:
```py
>>> from diffusers import DDPMScheduler
>>> scheduler = DDPMScheduler.from_pretrained(repo_id)
>>> scheduler
DDPMScheduler {
"_class_name": "DDPMScheduler",
"_diffusers_version": "0.21.4",
"beta_end": 0.02,
"beta_schedule": "linear",
"beta_start": 0.0001,
"clip_sample": true,
"clip_sample_range": 1.0,
"dynamic_thresholding_ratio": 0.995,
"num_train_timesteps": 1000,
"prediction_type": "epsilon",
"sample_max_value": 1.0,
"steps_offset": 0,
"thresholding": false,
"timestep_spacing": "leading",
"trained_betas": null,
"variance_type": "fixed_small"
}
```
<Tip>
💡 Unlike a model, a scheduler does not have trainable weights and is parameter-free!
</Tip>
Some of the most important parameters are:
* `num_train_timesteps`: the length of the denoising process or, in other words, the number of timesteps required to process random Gaussian noise into a data sample.
* `beta_schedule`: the type of noise schedule to use for inference and training.
* `beta_start` and `beta_end`: the start and end noise values for the noise schedule.
To predict a slightly less noisy image, pass the following to the scheduler's [`~diffusers.DDPMScheduler.step`] method: model output, `timestep`, and current `sample`.
```py
>>> less_noisy_sample = scheduler.step(model_output=noisy_residual, timestep=2, sample=noisy_sample).prev_sample
>>> less_noisy_sample.shape
torch.Size([1, 3, 256, 256])
```
The `less_noisy_sample` can be passed to the next `timestep` where it'll get even less noisy! Let's bring it all together now and visualize the entire denoising process.
First, create a function that postprocesses and displays the denoised image as a `PIL.Image`:
```py
>>> import PIL.Image
>>> import numpy as np
>>> def display_sample(sample, i):
... image_processed = sample.cpu().permute(0, 2, 3, 1)
... image_processed = (image_processed + 1.0) * 127.5
... image_processed = image_processed.numpy().astype(np.uint8)
... image_pil = PIL.Image.fromarray(image_processed[0])
... display(f"Image at step {i}")
... display(image_pil)
```
To speed up the denoising process, move the input and model to a GPU:
```py
>>> model.to("cuda")
>>> noisy_sample = noisy_sample.to("cuda")
```
Now create a denoising loop that predicts the residual of the less noisy sample, and computes the less noisy sample with the scheduler:
```py
>>> import tqdm
>>> sample = noisy_sample
>>> for i, t in enumerate(tqdm.tqdm(scheduler.timesteps)):
... # 1. predict noise residual
... with torch.no_grad():
... residual = model(sample, t).sample
... # 2. compute less noisy image and set x_t -> x_t-1
... sample = scheduler.step(residual, t, sample).prev_sample
... # 3. optionally look at image
... if (i + 1) % 50 == 0:
... display_sample(sample, i + 1)
```
Sit back and watch as a cat is generated from nothing but noise! 😻
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/diffusion-quicktour.png"/>
</div>
## Next steps
Hopefully, you generated some cool images with 🧨 Diffusers in this quicktour! For your next steps, you can:
* Train or finetune a model to generate your own images in the [training](./tutorials/basic_training) tutorial.
* See example official and community [training or finetuning scripts](https://github.com/huggingface/diffusers/tree/main/examples#-diffusers-examples) for a variety of use cases.
* Learn more about loading, accessing, changing, and comparing schedulers in the [Using different Schedulers](./using-diffusers/schedulers) guide.
* Explore prompt engineering, speed and memory optimizations, and tips and tricks for generating higher-quality images with the [Stable Diffusion](./stable_diffusion) guide.
* Dive deeper into speeding up 🧨 Diffusers with guides on [optimized PyTorch on a GPU](./optimization/fp16), and inference guides for running [Stable Diffusion on Apple Silicon (M1/M2)](./optimization/mps) and [ONNX Runtime](./optimization/onnx).
|
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|
{
"file_path": "diffusers/docs/source/en/quicktour.md",
"repo_id": "diffusers",
"token_count": 4836
}
| 99
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<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Text-to-image
<Tip warning={true}>
The text-to-image script is experimental, and it's easy to overfit and run into issues like catastrophic forgetting. Try exploring different hyperparameters to get the best results on your dataset.
</Tip>
Text-to-image models like Stable Diffusion are conditioned to generate images given a text prompt.
Training a model can be taxing on your hardware, but if you enable `gradient_checkpointing` and `mixed_precision`, it is possible to train a model on a single 24GB GPU. If you're training with larger batch sizes or want to train faster, it's better to use GPUs with more than 30GB of memory. You can reduce your memory footprint by enabling memory-efficient attention with [xFormers](../optimization/xformers). JAX/Flax training is also supported for efficient training on TPUs and GPUs, but it doesn't support gradient checkpointing, gradient accumulation or xFormers. A GPU with at least 30GB of memory or a TPU v3 is recommended for training with Flax.
This guide will explore the [train_text_to_image.py](https://github.com/huggingface/diffusers/blob/main/examples/text_to_image/train_text_to_image.py) training script to help you become familiar with it, and how you can adapt it for your own use-case.
Before running the script, make sure you install the library from source:
```bash
git clone https://github.com/huggingface/diffusers
cd diffusers
pip install .
```
Then navigate to the example folder containing the training script and install the required dependencies for the script you're using:
<hfoptions id="installation">
<hfoption id="PyTorch">
```bash
cd examples/text_to_image
pip install -r requirements.txt
```
</hfoption>
<hfoption id="Flax">
```bash
cd examples/text_to_image
pip install -r requirements_flax.txt
```
</hfoption>
</hfoptions>
<Tip>
🤗 Accelerate is a library for helping you train on multiple GPUs/TPUs or with mixed-precision. It'll automatically configure your training setup based on your hardware and environment. Take a look at the 🤗 Accelerate [Quick tour](https://huggingface.co/docs/accelerate/quicktour) to learn more.
</Tip>
Initialize an 🤗 Accelerate environment:
```bash
accelerate config
```
To setup a default 🤗 Accelerate environment without choosing any configurations:
```bash
accelerate config default
```
Or if your environment doesn't support an interactive shell, like a notebook, you can use:
```py
from accelerate.utils import write_basic_config
write_basic_config()
```
Lastly, if you want to train a model on your own dataset, take a look at the [Create a dataset for training](create_dataset) guide to learn how to create a dataset that works with the training script.
## Script parameters
<Tip>
The following sections highlight parts of the training script that are important for understanding how to modify it, but it doesn't cover every aspect of the script in detail. If you're interested in learning more, feel free to read through the [script](https://github.com/huggingface/diffusers/blob/main/examples/text_to_image/train_text_to_image.py) and let us know if you have any questions or concerns.
</Tip>
The training script provides many parameters to help you customize your training run. All of the parameters and their descriptions are found in the [`parse_args()`](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L193) function. This function provides default values for each parameter, such as the training batch size and learning rate, but you can also set your own values in the training command if you'd like.
For example, to speedup training with mixed precision using the fp16 format, add the `--mixed_precision` parameter to the training command:
```bash
accelerate launch train_text_to_image.py \
--mixed_precision="fp16"
```
Some basic and important parameters include:
- `--pretrained_model_name_or_path`: the name of the model on the Hub or a local path to the pretrained model
- `--dataset_name`: the name of the dataset on the Hub or a local path to the dataset to train on
- `--image_column`: the name of the image column in the dataset to train on
- `--caption_column`: the name of the text column in the dataset to train on
- `--output_dir`: where to save the trained model
- `--push_to_hub`: whether to push the trained model to the Hub
- `--checkpointing_steps`: frequency of saving a checkpoint as the model trains; this is useful if for some reason training is interrupted, you can continue training from that checkpoint by adding `--resume_from_checkpoint` to your training command
### Min-SNR weighting
The [Min-SNR](https://huggingface.co/papers/2303.09556) weighting strategy can help with training by rebalancing the loss to achieve faster convergence. The training script supports predicting `epsilon` (noise) or `v_prediction`, but Min-SNR is compatible with both prediction types. This weighting strategy is only supported by PyTorch and is unavailable in the Flax training script.
Add the `--snr_gamma` parameter and set it to the recommended value of 5.0:
```bash
accelerate launch train_text_to_image.py \
--snr_gamma=5.0
```
You can compare the loss surfaces for different `snr_gamma` values in this [Weights and Biases](https://wandb.ai/sayakpaul/text2image-finetune-minsnr) report. For smaller datasets, the effects of Min-SNR may not be as obvious compared to larger datasets.
## Training script
The dataset preprocessing code and training loop are found in the [`main()`](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L490) function. If you need to adapt the training script, this is where you'll need to make your changes.
The `train_text_to_image` script starts by [loading a scheduler](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L543) and tokenizer. You can choose to use a different scheduler here if you want:
```py
noise_scheduler = DDPMScheduler.from_pretrained(args.pretrained_model_name_or_path, subfolder="scheduler")
tokenizer = CLIPTokenizer.from_pretrained(
args.pretrained_model_name_or_path, subfolder="tokenizer", revision=args.revision
)
```
Then the script [loads the UNet](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L619) model:
```py
load_model = UNet2DConditionModel.from_pretrained(input_dir, subfolder="unet")
model.register_to_config(**load_model.config)
model.load_state_dict(load_model.state_dict())
```
Next, the text and image columns of the dataset need to be preprocessed. The [`tokenize_captions`](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L724) function handles tokenizing the inputs, and the [`train_transforms`](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L742) function specifies the type of transforms to apply to the image. Both of these functions are bundled into `preprocess_train`:
```py
def preprocess_train(examples):
images = [image.convert("RGB") for image in examples[image_column]]
examples["pixel_values"] = [train_transforms(image) for image in images]
examples["input_ids"] = tokenize_captions(examples)
return examples
```
Lastly, the [training loop](https://github.com/huggingface/diffusers/blob/8959c5b9dec1c94d6ba482c94a58d2215c5fd026/examples/text_to_image/train_text_to_image.py#L878) handles everything else. It encodes images into latent space, adds noise to the latents, computes the text embeddings to condition on, updates the model parameters, and saves and pushes the model to the Hub. If you want to learn more about how the training loop works, check out the [Understanding pipelines, models and schedulers](../using-diffusers/write_own_pipeline) tutorial which breaks down the basic pattern of the denoising process.
## Launch the script
Once you've made all your changes or you're okay with the default configuration, you're ready to launch the training script! 🚀
<hfoptions id="training-inference">
<hfoption id="PyTorch">
Let's train on the [Naruto BLIP captions](https://huggingface.co/datasets/lambdalabs/naruto-blip-captions) dataset to generate your own Naruto characters. Set the environment variables `MODEL_NAME` and `dataset_name` to the model and the dataset (either from the Hub or a local path). If you're training on more than one GPU, add the `--multi_gpu` parameter to the `accelerate launch` command.
<Tip>
To train on a local dataset, set the `TRAIN_DIR` and `OUTPUT_DIR` environment variables to the path of the dataset and where to save the model to.
</Tip>
```bash
export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export dataset_name="lambdalabs/naruto-blip-captions"
accelerate launch --mixed_precision="fp16" train_text_to_image.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--dataset_name=$dataset_name \
--use_ema \
--resolution=512 --center_crop --random_flip \
--train_batch_size=1 \
--gradient_accumulation_steps=4 \
--gradient_checkpointing \
--max_train_steps=15000 \
--learning_rate=1e-05 \
--max_grad_norm=1 \
--enable_xformers_memory_efficient_attention \
--lr_scheduler="constant" --lr_warmup_steps=0 \
--output_dir="sd-naruto-model" \
--push_to_hub
```
</hfoption>
<hfoption id="Flax">
Training with Flax can be faster on TPUs and GPUs thanks to [@duongna211](https://github.com/duongna21). Flax is more efficient on a TPU, but GPU performance is also great.
Set the environment variables `MODEL_NAME` and `dataset_name` to the model and the dataset (either from the Hub or a local path).
<Tip>
To train on a local dataset, set the `TRAIN_DIR` and `OUTPUT_DIR` environment variables to the path of the dataset and where to save the model to.
</Tip>
```bash
export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export dataset_name="lambdalabs/naruto-blip-captions"
python train_text_to_image_flax.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--dataset_name=$dataset_name \
--resolution=512 --center_crop --random_flip \
--train_batch_size=1 \
--max_train_steps=15000 \
--learning_rate=1e-05 \
--max_grad_norm=1 \
--output_dir="sd-naruto-model" \
--push_to_hub
```
</hfoption>
</hfoptions>
Once training is complete, you can use your newly trained model for inference:
<hfoptions id="training-inference">
<hfoption id="PyTorch">
```py
from diffusers import StableDiffusionPipeline
import torch
pipeline = StableDiffusionPipeline.from_pretrained("path/to/saved_model", torch_dtype=torch.float16, use_safetensors=True).to("cuda")
image = pipeline(prompt="yoda").images[0]
image.save("yoda-naruto.png")
```
</hfoption>
<hfoption id="Flax">
```py
import jax
import numpy as np
from flax.jax_utils import replicate
from flax.training.common_utils import shard
from diffusers import FlaxStableDiffusionPipeline
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained("path/to/saved_model", dtype=jax.numpy.bfloat16)
prompt = "yoda naruto"
prng_seed = jax.random.PRNGKey(0)
num_inference_steps = 50
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prompt_ids = pipeline.prepare_inputs(prompt)
# shard inputs and rng
params = replicate(params)
prng_seed = jax.random.split(prng_seed, jax.device_count())
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, num_inference_steps, jit=True).images
images = pipeline.numpy_to_pil(np.asarray(images.reshape((num_samples,) + images.shape[-3:])))
image.save("yoda-naruto.png")
```
</hfoption>
</hfoptions>
## Next steps
Congratulations on training your own text-to-image model! To learn more about how to use your new model, the following guides may be helpful:
- Learn how to [load LoRA weights](../using-diffusers/loading_adapters#LoRA) for inference if you trained your model with LoRA.
- Learn more about how certain parameters like guidance scale or techniques such as prompt weighting can help you control inference in the [Text-to-image](../using-diffusers/conditional_image_generation) task guide.
|
diffusers/docs/source/en/training/text2image.md/0
|
{
"file_path": "diffusers/docs/source/en/training/text2image.md",
"repo_id": "diffusers",
"token_count": 4036
}
| 100
|
<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# DiffEdit
[[open-in-colab]]
Image editing typically requires providing a mask of the area to be edited. DiffEdit automatically generates the mask for you based on a text query, making it easier overall to create a mask without image editing software. The DiffEdit algorithm works in three steps:
1. the diffusion model denoises an image conditioned on some query text and reference text which produces different noise estimates for different areas of the image; the difference is used to infer a mask to identify which area of the image needs to be changed to match the query text
2. the input image is encoded into latent space with DDIM
3. the latents are decoded with the diffusion model conditioned on the text query, using the mask as a guide such that pixels outside the mask remain the same as in the input image
This guide will show you how to use DiffEdit to edit images without manually creating a mask.
Before you begin, make sure you have the following libraries installed:
```py
# uncomment to install the necessary libraries in Colab
#!pip install -q diffusers transformers accelerate
```
The [`StableDiffusionDiffEditPipeline`] requires an image mask and a set of partially inverted latents. The image mask is generated from the [`~StableDiffusionDiffEditPipeline.generate_mask`] function, and includes two parameters, `source_prompt` and `target_prompt`. These parameters determine what to edit in the image. For example, if you want to change a bowl of *fruits* to a bowl of *pears*, then:
```py
source_prompt = "a bowl of fruits"
target_prompt = "a bowl of pears"
```
The partially inverted latents are generated from the [`~StableDiffusionDiffEditPipeline.invert`] function, and it is generally a good idea to include a `prompt` or *caption* describing the image to help guide the inverse latent sampling process. The caption can often be your `source_prompt`, but feel free to experiment with other text descriptions!
Let's load the pipeline, scheduler, inverse scheduler, and enable some optimizations to reduce memory usage:
```py
import torch
from diffusers import DDIMScheduler, DDIMInverseScheduler, StableDiffusionDiffEditPipeline
pipeline = StableDiffusionDiffEditPipeline.from_pretrained(
"stabilityai/stable-diffusion-2-1",
torch_dtype=torch.float16,
safety_checker=None,
use_safetensors=True,
)
pipeline.scheduler = DDIMScheduler.from_config(pipeline.scheduler.config)
pipeline.inverse_scheduler = DDIMInverseScheduler.from_config(pipeline.scheduler.config)
pipeline.enable_model_cpu_offload()
pipeline.enable_vae_slicing()
```
Load the image to edit:
```py
from diffusers.utils import load_image, make_image_grid
img_url = "https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"
raw_image = load_image(img_url).resize((768, 768))
raw_image
```
Use the [`~StableDiffusionDiffEditPipeline.generate_mask`] function to generate the image mask. You'll need to pass it the `source_prompt` and `target_prompt` to specify what to edit in the image:
```py
from PIL import Image
source_prompt = "a bowl of fruits"
target_prompt = "a basket of pears"
mask_image = pipeline.generate_mask(
image=raw_image,
source_prompt=source_prompt,
target_prompt=target_prompt,
)
Image.fromarray((mask_image.squeeze()*255).astype("uint8"), "L").resize((768, 768))
```
Next, create the inverted latents and pass it a caption describing the image:
```py
inv_latents = pipeline.invert(prompt=source_prompt, image=raw_image).latents
```
Finally, pass the image mask and inverted latents to the pipeline. The `target_prompt` becomes the `prompt` now, and the `source_prompt` is used as the `negative_prompt`:
```py
output_image = pipeline(
prompt=target_prompt,
mask_image=mask_image,
image_latents=inv_latents,
negative_prompt=source_prompt,
).images[0]
mask_image = Image.fromarray((mask_image.squeeze()*255).astype("uint8"), "L").resize((768, 768))
make_image_grid([raw_image, mask_image, output_image], rows=1, cols=3)
```
<div class="flex gap-4">
<div>
<img class="rounded-xl" src="https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"/>
<figcaption class="mt-2 text-center text-sm text-gray-500">original image</figcaption>
</div>
<div>
<img class="rounded-xl" src="https://github.com/Xiang-cd/DiffEdit-stable-diffusion/blob/main/assets/target.png?raw=true"/>
<figcaption class="mt-2 text-center text-sm text-gray-500">edited image</figcaption>
</div>
</div>
## Generate source and target embeddings
The source and target embeddings can be automatically generated with the [Flan-T5](https://huggingface.co/docs/transformers/model_doc/flan-t5) model instead of creating them manually.
Load the Flan-T5 model and tokenizer from the 🤗 Transformers library:
```py
import torch
from transformers import AutoTokenizer, T5ForConditionalGeneration
tokenizer = AutoTokenizer.from_pretrained("google/flan-t5-large")
model = T5ForConditionalGeneration.from_pretrained("google/flan-t5-large", device_map="auto", torch_dtype=torch.float16)
```
Provide some initial text to prompt the model to generate the source and target prompts.
```py
source_concept = "bowl"
target_concept = "basket"
source_text = f"Provide a caption for images containing a {source_concept}. "
"The captions should be in English and should be no longer than 150 characters."
target_text = f"Provide a caption for images containing a {target_concept}. "
"The captions should be in English and should be no longer than 150 characters."
```
Next, create a utility function to generate the prompts:
```py
@torch.no_grad()
def generate_prompts(input_prompt):
input_ids = tokenizer(input_prompt, return_tensors="pt").input_ids.to("cuda")
outputs = model.generate(
input_ids, temperature=0.8, num_return_sequences=16, do_sample=True, max_new_tokens=128, top_k=10
)
return tokenizer.batch_decode(outputs, skip_special_tokens=True)
source_prompts = generate_prompts(source_text)
target_prompts = generate_prompts(target_text)
print(source_prompts)
print(target_prompts)
```
<Tip>
Check out the [generation strategy](https://huggingface.co/docs/transformers/main/en/generation_strategies) guide if you're interested in learning more about strategies for generating different quality text.
</Tip>
Load the text encoder model used by the [`StableDiffusionDiffEditPipeline`] to encode the text. You'll use the text encoder to compute the text embeddings:
```py
import torch
from diffusers import StableDiffusionDiffEditPipeline
pipeline = StableDiffusionDiffEditPipeline.from_pretrained(
"stabilityai/stable-diffusion-2-1", torch_dtype=torch.float16, use_safetensors=True
)
pipeline.enable_model_cpu_offload()
pipeline.enable_vae_slicing()
@torch.no_grad()
def embed_prompts(sentences, tokenizer, text_encoder, device="cuda"):
embeddings = []
for sent in sentences:
text_inputs = tokenizer(
sent,
padding="max_length",
max_length=tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
prompt_embeds = text_encoder(text_input_ids.to(device), attention_mask=None)[0]
embeddings.append(prompt_embeds)
return torch.concatenate(embeddings, dim=0).mean(dim=0).unsqueeze(0)
source_embeds = embed_prompts(source_prompts, pipeline.tokenizer, pipeline.text_encoder)
target_embeds = embed_prompts(target_prompts, pipeline.tokenizer, pipeline.text_encoder)
```
Finally, pass the embeddings to the [`~StableDiffusionDiffEditPipeline.generate_mask`] and [`~StableDiffusionDiffEditPipeline.invert`] functions, and pipeline to generate the image:
```diff
from diffusers import DDIMInverseScheduler, DDIMScheduler
from diffusers.utils import load_image, make_image_grid
from PIL import Image
pipeline.scheduler = DDIMScheduler.from_config(pipeline.scheduler.config)
pipeline.inverse_scheduler = DDIMInverseScheduler.from_config(pipeline.scheduler.config)
img_url = "https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"
raw_image = load_image(img_url).resize((768, 768))
mask_image = pipeline.generate_mask(
image=raw_image,
- source_prompt=source_prompt,
- target_prompt=target_prompt,
+ source_prompt_embeds=source_embeds,
+ target_prompt_embeds=target_embeds,
)
inv_latents = pipeline.invert(
- prompt=source_prompt,
+ prompt_embeds=source_embeds,
image=raw_image,
).latents
output_image = pipeline(
mask_image=mask_image,
image_latents=inv_latents,
- prompt=target_prompt,
- negative_prompt=source_prompt,
+ prompt_embeds=target_embeds,
+ negative_prompt_embeds=source_embeds,
).images[0]
mask_image = Image.fromarray((mask_image.squeeze()*255).astype("uint8"), "L")
make_image_grid([raw_image, mask_image, output_image], rows=1, cols=3)
```
## Generate a caption for inversion
While you can use the `source_prompt` as a caption to help generate the partially inverted latents, you can also use the [BLIP](https://huggingface.co/docs/transformers/model_doc/blip) model to automatically generate a caption.
Load the BLIP model and processor from the 🤗 Transformers library:
```py
import torch
from transformers import BlipForConditionalGeneration, BlipProcessor
processor = BlipProcessor.from_pretrained("Salesforce/blip-image-captioning-base")
model = BlipForConditionalGeneration.from_pretrained("Salesforce/blip-image-captioning-base", torch_dtype=torch.float16, low_cpu_mem_usage=True)
```
Create a utility function to generate a caption from the input image:
```py
@torch.no_grad()
def generate_caption(images, caption_generator, caption_processor):
text = "a photograph of"
inputs = caption_processor(images, text, return_tensors="pt").to(device="cuda", dtype=caption_generator.dtype)
caption_generator.to("cuda")
outputs = caption_generator.generate(**inputs, max_new_tokens=128)
# offload caption generator
caption_generator.to("cpu")
caption = caption_processor.batch_decode(outputs, skip_special_tokens=True)[0]
return caption
```
Load an input image and generate a caption for it using the `generate_caption` function:
```py
from diffusers.utils import load_image
img_url = "https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"
raw_image = load_image(img_url).resize((768, 768))
caption = generate_caption(raw_image, model, processor)
```
<div class="flex justify-center">
<figure>
<img class="rounded-xl" src="https://github.com/Xiang-cd/DiffEdit-stable-diffusion/raw/main/assets/origin.png"/>
<figcaption class="text-center">generated caption: "a photograph of a bowl of fruit on a table"</figcaption>
</figure>
</div>
Now you can drop the caption into the [`~StableDiffusionDiffEditPipeline.invert`] function to generate the partially inverted latents!
|
diffusers/docs/source/en/using-diffusers/diffedit.md/0
|
{
"file_path": "diffusers/docs/source/en/using-diffusers/diffedit.md",
"repo_id": "diffusers",
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| 101
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<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Reproducible pipelines
Diffusion models are inherently random which is what allows it to generate different outputs every time it is run. But there are certain times when you want to generate the same output every time, like when you're testing, replicating results, and even [improving image quality](#deterministic-batch-generation). While you can't expect to get identical results across platforms, you can expect reproducible results across releases and platforms within a certain tolerance range (though even this may vary).
This guide will show you how to control randomness for deterministic generation on a CPU and GPU.
> [!TIP]
> We strongly recommend reading PyTorch's [statement about reproducibility](https://pytorch.org/docs/stable/notes/randomness.html):
>
> "Completely reproducible results are not guaranteed across PyTorch releases, individual commits, or different platforms. Furthermore, results may not be reproducible between CPU and GPU executions, even when using identical seeds."
## Control randomness
During inference, pipelines rely heavily on random sampling operations which include creating the
Gaussian noise tensors to denoise and adding noise to the scheduling step.
Take a look at the tensor values in the [`DDIMPipeline`] after two inference steps.
```python
from diffusers import DDIMPipeline
import numpy as np
ddim = DDIMPipeline.from_pretrained( "google/ddpm-cifar10-32", use_safetensors=True)
image = ddim(num_inference_steps=2, output_type="np").images
print(np.abs(image).sum())
```
Running the code above prints one value, but if you run it again you get a different value.
Each time the pipeline is run, [torch.randn](https://pytorch.org/docs/stable/generated/torch.randn.html) uses a different random seed to create the Gaussian noise tensors. This leads to a different result each time it is run and enables the diffusion pipeline to generate a different random image each time.
But if you need to reliably generate the same image, that depends on whether you're running the pipeline on a CPU or GPU.
> [!TIP]
> It might seem unintuitive to pass `Generator` objects to a pipeline instead of the integer value representing the seed. However, this is the recommended design when working with probabilistic models in PyTorch because a `Generator` is a *random state* that can be passed to multiple pipelines in a sequence. As soon as the `Generator` is consumed, the *state* is changed in place which means even if you passed the same `Generator` to a different pipeline, it won't produce the same result because the state is already changed.
<hfoptions id="hardware">
<hfoption id="CPU">
To generate reproducible results on a CPU, you'll need to use a PyTorch [Generator](https://pytorch.org/docs/stable/generated/torch.Generator.html) and set a seed. Now when you run the code, it always prints a value of `1491.1711` because the `Generator` object with the seed is passed to all the random functions in the pipeline. You should get a similar, if not the same, result on whatever hardware and PyTorch version you're using.
```python
import torch
import numpy as np
from diffusers import DDIMPipeline
ddim = DDIMPipeline.from_pretrained("google/ddpm-cifar10-32", use_safetensors=True)
generator = torch.Generator(device="cpu").manual_seed(0)
image = ddim(num_inference_steps=2, output_type="np", generator=generator).images
print(np.abs(image).sum())
```
</hfoption>
<hfoption id="GPU">
Writing a reproducible pipeline on a GPU is a bit trickier, and full reproducibility across different hardware is not guaranteed because matrix multiplication - which diffusion pipelines require a lot of - is less deterministic on a GPU than a CPU. For example, if you run the same code example from the CPU example, you'll get a different result even though the seed is identical. This is because the GPU uses a different random number generator than the CPU.
```python
import torch
import numpy as np
from diffusers import DDIMPipeline
ddim = DDIMPipeline.from_pretrained("google/ddpm-cifar10-32", use_safetensors=True)
ddim.to("cuda")
generator = torch.Generator(device="cuda").manual_seed(0)
image = ddim(num_inference_steps=2, output_type="np", generator=generator).images
print(np.abs(image).sum())
```
To avoid this issue, Diffusers has a [`~utils.torch_utils.randn_tensor`] function for creating random noise on the CPU, and then moving the tensor to a GPU if necessary. The [`~utils.torch_utils.randn_tensor`] function is used everywhere inside the pipeline. Now you can call [torch.manual_seed](https://pytorch.org/docs/stable/generated/torch.manual_seed.html) which automatically creates a CPU `Generator` that can be passed to the pipeline even if it is being run on a GPU.
```python
import torch
import numpy as np
from diffusers import DDIMPipeline
ddim = DDIMPipeline.from_pretrained("google/ddpm-cifar10-32", use_safetensors=True)
ddim.to("cuda")
generator = torch.manual_seed(0)
image = ddim(num_inference_steps=2, output_type="np", generator=generator).images
print(np.abs(image).sum())
```
> [!TIP]
> If reproducibility is important to your use case, we recommend always passing a CPU `Generator`. The performance loss is often negligible and you'll generate more similar values than if the pipeline had been run on a GPU.
Finally, more complex pipelines such as [`UnCLIPPipeline`], are often extremely
susceptible to precision error propagation. You'll need to use
exactly the same hardware and PyTorch version for full reproducibility.
</hfoption>
</hfoptions>
## Deterministic algorithms
You can also configure PyTorch to use deterministic algorithms to create a reproducible pipeline. The downside is that deterministic algorithms may be slower than non-deterministic ones and you may observe a decrease in performance.
Non-deterministic behavior occurs when operations are launched in more than one CUDA stream. To avoid this, set the environment variable [CUBLAS_WORKSPACE_CONFIG](https://docs.nvidia.com/cuda/cublas/index.html#results-reproducibility) to `:16:8` to only use one buffer size during runtime.
PyTorch typically benchmarks multiple algorithms to select the fastest one, but if you want reproducibility, you should disable this feature because the benchmark may select different algorithms each time. Set Diffusers [enable_full_determinism](https://github.com/huggingface/diffusers/blob/142f353e1c638ff1d20bd798402b68f72c1ebbdd/src/diffusers/utils/testing_utils.py#L861) to enable deterministic algorithms.
```py
enable_full_determinism()
```
Now when you run the same pipeline twice, you'll get identical results.
```py
import torch
from diffusers import DDIMScheduler, StableDiffusionPipeline
pipe = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", use_safetensors=True).to("cuda")
pipe.scheduler = DDIMScheduler.from_config(pipe.scheduler.config)
g = torch.Generator(device="cuda")
prompt = "A bear is playing a guitar on Times Square"
g.manual_seed(0)
result1 = pipe(prompt=prompt, num_inference_steps=50, generator=g, output_type="latent").images
g.manual_seed(0)
result2 = pipe(prompt=prompt, num_inference_steps=50, generator=g, output_type="latent").images
print("L_inf dist =", abs(result1 - result2).max())
"L_inf dist = tensor(0., device='cuda:0')"
```
## Deterministic batch generation
A practical application of creating reproducible pipelines is *deterministic batch generation*. You generate a batch of images and select one image to improve with a more detailed prompt. The main idea is to pass a list of [Generator's](https://pytorch.org/docs/stable/generated/torch.Generator.html) to the pipeline and tie each `Generator` to a seed so you can reuse it.
Let's use the [runwayml/stable-diffusion-v1-5](https://huggingface.co/runwayml/stable-diffusion-v1-5) checkpoint and generate a batch of images.
```py
import torch
from diffusers import DiffusionPipeline
from diffusers.utils import make_image_grid
pipeline = DiffusionPipeline.from_pretrained(
"runwayml/stable-diffusion-v1-5", torch_dtype=torch.float16, use_safetensors=True
)
pipeline = pipeline.to("cuda")
```
Define four different `Generator`s and assign each `Generator` a seed (`0` to `3`). Then generate a batch of images and pick one to iterate on.
> [!WARNING]
> Use a list comprehension that iterates over the batch size specified in `range()` to create a unique `Generator` object for each image in the batch. If you multiply the `Generator` by the batch size integer, it only creates *one* `Generator` object that is used sequentially for each image in the batch.
>
> ```py
> [torch.Generator().manual_seed(seed)] * 4
> ```
```python
generator = [torch.Generator(device="cuda").manual_seed(i) for i in range(4)]
prompt = "Labrador in the style of Vermeer"
images = pipeline(prompt, generator=generator, num_images_per_prompt=4).images[0]
make_image_grid(images, rows=2, cols=2)
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/diffusers/diffusers-images-docs/resolve/main/reusabe_seeds.jpg"/>
</div>
Let's improve the first image (you can choose any image you want) which corresponds to the `Generator` with seed `0`. Add some additional text to your prompt and then make sure you reuse the same `Generator` with seed `0`. All the generated images should resemble the first image.
```python
prompt = [prompt + t for t in [", highly realistic", ", artsy", ", trending", ", colorful"]]
generator = [torch.Generator(device="cuda").manual_seed(0) for i in range(4)]
images = pipeline(prompt, generator=generator).images
make_image_grid(images, rows=2, cols=2)
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/diffusers/diffusers-images-docs/resolve/main/reusabe_seeds_2.jpg"/>
</div>
|
diffusers/docs/source/en/using-diffusers/reusing_seeds.md/0
|
{
"file_path": "diffusers/docs/source/en/using-diffusers/reusing_seeds.md",
"repo_id": "diffusers",
"token_count": 2981
}
| 102
|
<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# インストール
お使いのディープラーニングライブラリに合わせてDiffusersをインストールできます。
🤗 DiffusersはPython 3.8+、PyTorch 1.7.0+、Flaxでテストされています。使用するディープラーニングライブラリの以下のインストール手順に従ってください：
- [PyTorch](https://pytorch.org/get-started/locally/)のインストール手順。
- [Flax](https://flax.readthedocs.io/en/latest/)のインストール手順。
## pip でインストール
Diffusersは[仮想環境](https://docs.python.org/3/library/venv.html)の中でインストールすることが推奨されています。
Python の仮想環境についてよく知らない場合は、こちらの [ガイド](https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/) を参照してください。
仮想環境は異なるプロジェクトの管理を容易にし、依存関係間の互換性の問題を回避します。
ではさっそく、プロジェクトディレクトリに仮想環境を作ってみます：
```bash
python -m venv .env
```
仮想環境をアクティブにします：
```bash
source .env/bin/activate
```
🤗 Diffusers もまた 🤗 Transformers ライブラリに依存しており、以下のコマンドで両方をインストールできます：
<frameworkcontent>
<pt>
```bash
pip install diffusers["torch"] transformers
```
</pt>
<jax>
```bash
pip install diffusers["flax"] transformers
```
</jax>
</frameworkcontent>
## ソースからのインストール
ソースから🤗 Diffusersをインストールする前に、`torch`と🤗 Accelerateがインストールされていることを確認してください。
`torch`のインストールについては、`torch` [インストール](https://pytorch.org/get-started/locally/#start-locally)ガイドを参照してください。
🤗 Accelerateをインストールするには：
```bash
pip install accelerate
```
以下のコマンドでソースから🤗 Diffusersをインストールできます：
```bash
pip install git+https://github.com/huggingface/diffusers
```
このコマンドは最新の `stable` バージョンではなく、最先端の `main` バージョンをインストールします。
`main`バージョンは最新の開発に対応するのに便利です。
例えば、前回の公式リリース以降にバグが修正されたが、新しいリリースがまだリリースされていない場合などには都合がいいです。
しかし、これは `main` バージョンが常に安定しているとは限らないです。
私たちは `main` バージョンを運用し続けるよう努力しており、ほとんどの問題は通常数時間から1日以内に解決されます。
もし問題が発生した場合は、[Issue](https://github.com/huggingface/diffusers/issues/new/choose) を開いてください！
## 編集可能なインストール
以下の場合、編集可能なインストールが必要です：
* ソースコードの `main` バージョンを使用する。
* 🤗 Diffusers に貢献し、コードの変更をテストする必要がある場合。
リポジトリをクローンし、次のコマンドで 🤗 Diffusers をインストールしてください：
```bash
git clone https://github.com/huggingface/diffusers.git
cd diffusers
```
<frameworkcontent>
<pt>
```bash
pip install -e ".[torch]"
```
</pt>
<jax>
```bash
pip install -e ".[flax]"
```
</jax>
</frameworkcontent>
これらのコマンドは、リポジトリをクローンしたフォルダと Python のライブラリパスをリンクします。
Python は通常のライブラリパスに加えて、クローンしたフォルダの中を探すようになります。
例えば、Python パッケージが通常 `~/anaconda3/envs/main/lib/python3.10/site-packages/` にインストールされている場合、Python はクローンした `~/diffusers/` フォルダも同様に参照します。
<Tip warning={true}>
ライブラリを使い続けたい場合は、`diffusers`フォルダを残しておく必要があります。
</Tip>
これで、以下のコマンドで簡単にクローンを最新版の🤗 Diffusersにアップデートできます：
```bash
cd ~/diffusers/
git pull
```
Python環境は次の実行時に `main` バージョンの🤗 Diffusersを見つけます。
## テレメトリー・ロギングに関するお知らせ
このライブラリは `from_pretrained()` リクエスト中にデータを収集します。
このデータには Diffusers と PyTorch/Flax のバージョン、要求されたモデルやパイプラインクラスが含まれます。
また、Hubでホストされている場合は、事前に学習されたチェックポイントへのパスが含まれます。
この使用データは問題のデバッグや新機能の優先順位付けに役立ちます。
テレメトリーはHuggingFace Hubからモデルやパイプラインをロードするときのみ送信されます。ローカルでの使用中は収集されません。
我々は、すべての人が追加情報を共有したくないことを理解し、あなたのプライバシーを尊重します。
そのため、ターミナルから `DISABLE_TELEMETRY` 環境変数を設定することで、データ収集を無効にすることができます：
Linux/MacOSの場合
```bash
export DISABLE_TELEMETRY=YES
```
Windows の場合
```bash
set DISABLE_TELEMETRY=YES
```
|
diffusers/docs/source/ja/installation.md/0
|
{
"file_path": "diffusers/docs/source/ja/installation.md",
"repo_id": "diffusers",
"token_count": 2493
}
| 103
|
<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Habana Gaudi에서 Stable Diffusion을 사용하는 방법
🤗 Diffusers는 🤗 [Optimum Habana](https://huggingface.co/docs/optimum/habana/usage_guides/stable_diffusion)를 통해서 Habana Gaudi와 호환됩니다.
## 요구 사항
- Optimum Habana 1.4 또는 이후, [여기](https://huggingface.co/docs/optimum/habana/installation)에 설치하는 방법이 있습니다.
- SynapseAI 1.8.
## 추론 파이프라인
Gaudi에서 Stable Diffusion 1 및 2로 이미지를 생성하려면 두 인스턴스를 인스턴스화해야 합니다:
- [`GaudiStableDiffusionPipeline`](https://huggingface.co/docs/optimum/habana/package_reference/stable_diffusion_pipeline)이 포함된 파이프라인. 이 파이프라인은 *텍스트-이미지 생성*을 지원합니다.
- [`GaudiDDIMScheduler`](https://huggingface.co/docs/optimum/habana/package_reference/stable_diffusion_pipeline#optimum.habana.diffusers.GaudiDDIMScheduler)이 포함된 스케줄러. 이 스케줄러는 Habana Gaudi에 최적화되어 있습니다.
파이프라인을 초기화할 때, HPU에 배포하기 위해 `use_habana=True`를 지정해야 합니다.
또한 가능한 가장 빠른 생성을 위해 `use_hpu_graphs=True`로 **HPU 그래프**를 활성화해야 합니다.
마지막으로, [Hugging Face Hub](https://huggingface.co/Habana)에서 다운로드할 수 있는 [Gaudi configuration](https://huggingface.co/docs/optimum/habana/package_reference/gaudi_config)을 지정해야 합니다.
```python
from optimum.habana import GaudiConfig
from optimum.habana.diffusers import GaudiDDIMScheduler, GaudiStableDiffusionPipeline
model_name = "stabilityai/stable-diffusion-2-base"
scheduler = GaudiDDIMScheduler.from_pretrained(model_name, subfolder="scheduler")
pipeline = GaudiStableDiffusionPipeline.from_pretrained(
model_name,
scheduler=scheduler,
use_habana=True,
use_hpu_graphs=True,
gaudi_config="Habana/stable-diffusion",
)
```
파이프라인을 호출하여 하나 이상의 프롬프트에서 배치별로 이미지를 생성할 수 있습니다.
```python
outputs = pipeline(
prompt=[
"High quality photo of an astronaut riding a horse in space",
"Face of a yellow cat, high resolution, sitting on a park bench",
],
num_images_per_prompt=10,
batch_size=4,
)
```
더 많은 정보를 얻기 위해, Optimum Habana의 [문서](https://huggingface.co/docs/optimum/habana/usage_guides/stable_diffusion)와 공식 GitHub 저장소에 제공된 [예시](https://github.com/huggingface/optimum-habana/tree/main/examples/stable-diffusion)를 확인하세요.
## 벤치마크
다음은 [Habana/stable-diffusion](https://huggingface.co/Habana/stable-diffusion) Gaudi 구성(혼합 정밀도 bf16/fp32)을 사용하는 Habana first-generation Gaudi 및 Gaudi2의 지연 시간입니다:
| | Latency (배치 크기 = 1) | Throughput (배치 크기 = 8) |
| ---------------------- |:------------------------:|:---------------------------:|
| first-generation Gaudi | 4.29s | 0.283 images/s |
| Gaudi2 | 1.54s | 0.904 images/s |
|
diffusers/docs/source/ko/optimization/habana.md/0
|
{
"file_path": "diffusers/docs/source/ko/optimization/habana.md",
"repo_id": "diffusers",
"token_count": 1911
}
| 104
|
<!--Copyright 2024 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Low-Rank Adaptation of Large Language Models (LoRA)
[[open-in-colab]]
<Tip warning={true}>
현재 LoRA는 [`UNet2DConditionalModel`]의 어텐션 레이어에서만 지원됩니다.
</Tip>
[LoRA(Low-Rank Adaptation of Large Language Models)](https://arxiv.org/abs/2106.09685)는 메모리를 적게 사용하면서 대규모 모델의 학습을 가속화하는 학습 방법입니다. 이는 rank-decomposition weight 행렬 쌍(**업데이트 행렬**이라고 함)을 추가하고 새로 추가된 가중치**만** 학습합니다. 여기에는 몇 가지 장점이 있습니다.
- 이전에 미리 학습된 가중치는 고정된 상태로 유지되므로 모델이 [치명적인 망각](https://www.pnas.org/doi/10.1073/pnas.1611835114) 경향이 없습니다.
- Rank-decomposition 행렬은 원래 모델보다 파라메터 수가 훨씬 적으므로 학습된 LoRA 가중치를 쉽게 끼워넣을 수 있습니다.
- LoRA 매트릭스는 일반적으로 원본 모델의 어텐션 레이어에 추가됩니다. 🧨 Diffusers는 [`~diffusers.loaders.UNet2DConditionLoadersMixin.load_attn_procs`] 메서드를 제공하여 LoRA 가중치를 모델의 어텐션 레이어로 불러옵니다. `scale` 매개변수를 통해 모델이 새로운 학습 이미지에 맞게 조정되는 범위를 제어할 수 있습니다.
- 메모리 효율성이 향상되어 Tesla T4, RTX 3080 또는 RTX 2080 Ti와 같은 소비자용 GPU에서 파인튜닝을 실행할 수 있습니다! T4와 같은 GPU는 무료이며 Kaggle 또는 Google Colab 노트북에서 쉽게 액세스할 수 있습니다.
<Tip>
💡 LoRA는 어텐션 레이어에만 한정되지는 않습니다. 저자는 언어 모델의 어텐션 레이어를 수정하는 것이 매우 효율적으로 죻은 성능을 얻기에 충분하다는 것을 발견했습니다. 이것이 LoRA 가중치를 모델의 어텐션 레이어에 추가하는 것이 일반적인 이유입니다. LoRA 작동 방식에 대한 자세한 내용은 [Using LoRA for effective Stable Diffusion fine-tuning](https://huggingface.co/blog/lora) 블로그를 확인하세요!
</Tip>
[cloneofsimo](https://github.com/cloneofsimo)는 인기 있는 [lora](https://github.com/cloneofsimo/lora) GitHub 리포지토리에서 Stable Diffusion을 위한 LoRA 학습을 최초로 시도했습니다. 🧨 Diffusers는 [text-to-image 생성](https://github.com/huggingface/diffusers/tree/main/examples/text_to_image#training-with-lora) 및 [DreamBooth](https://github.com/huggingface/diffusers/tree/main/examples/dreambooth#training-with-low-rank-adaptation-of-large-language-models-lora)을 지원합니다. 이 가이드는 두 가지를 모두 수행하는 방법을 보여줍니다.
모델을 저장하거나 커뮤니티와 공유하려면 Hugging Face 계정에 로그인하세요(아직 계정이 없는 경우 [생성](hf.co/join)하세요):
```bash
huggingface-cli login
```
## Text-to-image
수십억 개의 파라메터들이 있는 Stable Diffusion과 같은 모델을 파인튜닝하는 것은 느리고 어려울 수 있습니다. LoRA를 사용하면 diffusion 모델을 파인튜닝하는 것이 훨씬 쉽고 빠릅니다. 8비트 옵티마이저와 같은 트릭에 의존하지 않고도 11GB의 GPU RAM으로 하드웨어에서 실행할 수 있습니다.
### 학습[[dreambooth-training]]
[Naruto BLIP 캡션](https://huggingface.co/datasets/lambdalabs/naruto-blip-captions) 데이터셋으로 [`stable-diffusion-v1-5`](https://huggingface.co/runwayml/stable-diffusion-v1-5)를 파인튜닝해 나만의 포켓몬을 생성해 보겠습니다.
시작하려면 `MODEL_NAME` 및 `DATASET_NAME` 환경 변수가 설정되어 있는지 확인하십시오. `OUTPUT_DIR` 및 `HUB_MODEL_ID` 변수는 선택 사항이며 허브에서 모델을 저장할 위치를 지정합니다.
```bash
export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="/sddata/finetune/lora/naruto"
export HUB_MODEL_ID="naruto-lora"
export DATASET_NAME="lambdalabs/naruto-blip-captions"
```
학습을 시작하기 전에 알아야 할 몇 가지 플래그가 있습니다.
* `--push_to_hub`를 명시하면 학습된 LoRA 임베딩을 허브에 저장합니다.
* `--report_to=wandb`는 학습 결과를 가중치 및 편향 대시보드에 보고하고 기록합니다(예를 들어, 이 [보고서](https://wandb.ai/pcuenq/text2image-fine-tune/run/b4k1w0tn?workspace=user-pcuenq)를 참조하세요).
* `--learning_rate=1e-04`, 일반적으로 LoRA에서 사용하는 것보다 더 높은 학습률을 사용할 수 있습니다.
이제 학습을 시작할 준비가 되었습니다 (전체 학습 스크립트는 [여기](https://github.com/huggingface/diffusers/blob/main/examples/text_to_image/train_text_to_image_lora.py)에서 찾을 수 있습니다).
```bash
accelerate launch train_dreambooth_lora.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--instance_data_dir=$INSTANCE_DIR \
--output_dir=$OUTPUT_DIR \
--instance_prompt="a photo of sks dog" \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=1 \
--checkpointing_steps=100 \
--learning_rate=1e-4 \
--report_to="wandb" \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--max_train_steps=500 \
--validation_prompt="A photo of sks dog in a bucket" \
--validation_epochs=50 \
--seed="0" \
--push_to_hub
```
### 추론[[dreambooth-inference]]
이제 [`StableDiffusionPipeline`]에서 기본 모델을 불러와 추론을 위해 모델을 사용할 수 있습니다:
```py
>>> import torch
>>> from diffusers import StableDiffusionPipeline
>>> model_base = "runwayml/stable-diffusion-v1-5"
>>> pipe = StableDiffusionPipeline.from_pretrained(model_base, torch_dtype=torch.float16)
```
*기본 모델의 가중치 위에* 파인튜닝된 DreamBooth 모델에서 LoRA 가중치를 불러온 다음, 더 빠른 추론을 위해 파이프라인을 GPU로 이동합니다. LoRA 가중치를 프리징된 사전 훈련된 모델 가중치와 병합할 때, 선택적으로 'scale' 매개변수로 어느 정도의 가중치를 병합할 지 조절할 수 있습니다:
<Tip>
💡 `0`의 `scale` 값은 LoRA 가중치를 사용하지 않아 원래 모델의 가중치만 사용한 것과 같고, `1`의 `scale` 값은 파인튜닝된 LoRA 가중치만 사용함을 의미합니다. 0과 1 사이의 값들은 두 결과들 사이로 보간됩니다.
</Tip>
```py
>>> pipe.unet.load_attn_procs(model_path)
>>> pipe.to("cuda")
# LoRA 파인튜닝된 모델의 가중치 절반과 기본 모델의 가중치 절반 사용
>>> image = pipe(
... "A picture of a sks dog in a bucket.",
... num_inference_steps=25,
... guidance_scale=7.5,
... cross_attention_kwargs={"scale": 0.5},
... ).images[0]
# 완전히 파인튜닝된 LoRA 모델의 가중치 사용
>>> image = pipe("A picture of a sks dog in a bucket.", num_inference_steps=25, guidance_scale=7.5).images[0]
>>> image.save("bucket-dog.png")
```
|
diffusers/docs/source/ko/training/lora.md/0
|
{
"file_path": "diffusers/docs/source/ko/training/lora.md",
"repo_id": "diffusers",
"token_count": 4734
}
| 105
|
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# 어댑터 불러오기
[[open-in-colab]]
특정 물체의 이미지 또는 특정 스타일의 이미지를 생성하도록 diffusion 모델을 개인화하기 위한 몇 가지 [학습](../training/overview) 기법이 있습니다. 이러한 학습 방법은 각각 다른 유형의 어댑터를 생성합니다. 일부 어댑터는 완전히 새로운 모델을 생성하는 반면, 다른 어댑터는 임베딩 또는 가중치의 작은 부분만 수정합니다. 이는 각 어댑터의 로딩 프로세스도 다르다는 것을 의미합니다.
이 가이드에서는 DreamBooth, textual inversion 및 LoRA 가중치를 불러오는 방법을 설명합니다.
<Tip>
사용할 체크포인트와 임베딩은 [Stable Diffusion Conceptualizer](https://huggingface.co/spaces/sd-concepts-library/stable-diffusion-conceptualizer), [LoRA the Explorer](https://huggingface.co/spaces/multimodalart/LoraTheExplorer), [Diffusers Models Gallery](https://huggingface.co/spaces/huggingface-projects/diffusers-gallery)에서 찾아보시기 바랍니다.
</Tip>
## DreamBooth
[DreamBooth](https://dreambooth.github.io/)는 물체의 여러 이미지에 대한 *diffusion 모델 전체*를 미세 조정하여 새로운 스타일과 설정으로 해당 물체의 이미지를 생성합니다. 이 방법은 모델이 물체 이미지와 연관시키는 방법을 학습하는 프롬프트에 특수 단어를 사용하는 방식으로 작동합니다. 모든 학습 방법 중에서 드림부스는 전체 체크포인트 모델이기 때문에 파일 크기가 가장 큽니다(보통 몇 GB).
Hergé가 그린 단 10개의 이미지로 학습된 [herge_style](https://huggingface.co/sd-dreambooth-library/herge-style) 체크포인트를 불러와 해당 스타일의 이미지를 생성해 보겠습니다. 이 모델이 작동하려면 체크포인트를 트리거하는 프롬프트에 특수 단어 `herge_style`을 포함시켜야 합니다:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("sd-dreambooth-library/herge-style", torch_dtype=torch.float16).to("cuda")
prompt = "A cute herge_style brown bear eating a slice of pizza, stunning color scheme, masterpiece, illustration"
image = pipeline(prompt).images[0]
image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_dreambooth.png" />
</div>
## Textual inversion
[Textual inversion](https://textual-inversion.github.io/)은 DreamBooth와 매우 유사하며 몇 개의 이미지만으로 특정 개념(스타일, 개체)을 생성하는 diffusion 모델을 개인화할 수도 있습니다. 이 방법은 프롬프트에 특정 단어를 입력하면 해당 이미지를 나타내는 새로운 임베딩을 학습하고 찾아내는 방식으로 작동합니다. 결과적으로 diffusion 모델 가중치는 동일하게 유지되고 훈련 프로세스는 비교적 작은(수 KB) 파일을 생성합니다.
Textual inversion은 임베딩을 생성하기 때문에 DreamBooth처럼 단독으로 사용할 수 없으며 또 다른 모델이 필요합니다.
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("runwayml/stable-diffusion-v1-5", torch_dtype=torch.float16).to("cuda")
```
이제 [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] 메서드를 사용하여 textual inversion 임베딩을 불러와 이미지를 생성할 수 있습니다. [sd-concepts-library/gta5-artwork](https://huggingface.co/sd-concepts-library/gta5-artwork) 임베딩을 불러와 보겠습니다. 이를 트리거하려면 프롬프트에 특수 단어 `<gta5-artwork>`를 포함시켜야 합니다:
```py
pipeline.load_textual_inversion("sd-concepts-library/gta5-artwork")
prompt = "A cute brown bear eating a slice of pizza, stunning color scheme, masterpiece, illustration, <gta5-artwork> style"
image = pipeline(prompt).images[0]
image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_txt_embed.png" />
</div>
Textual inversion은 또한 바람직하지 않은 사물에 대해 *네거티브 임베딩*을 생성하여 모델이 흐릿한 이미지나 손의 추가 손가락과 같은 바람직하지 않은 사물이 포함된 이미지를 생성하지 못하도록 학습할 수도 있습니다. 이는 프롬프트를 빠르게 개선하는 것이 쉬운 방법이 될 수 있습니다. 이는 이전과 같이 임베딩을 [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`]으로 불러오지만 이번에는 두 개의 매개변수가 더 필요합니다:
- `weight_name`: 파일이 특정 이름의 🤗 Diffusers 형식으로 저장된 경우이거나 파일이 A1111 형식으로 저장된 경우, 불러올 가중치 파일을 지정합니다.
- `token`: 임베딩을 트리거하기 위해 프롬프트에서 사용할 특수 단어를 지정합니다.
[sayakpaul/EasyNegative-test](https://huggingface.co/sayakpaul/EasyNegative-test) 임베딩을 불러와 보겠습니다:
```py
pipeline.load_textual_inversion(
"sayakpaul/EasyNegative-test", weight_name="EasyNegative.safetensors", token="EasyNegative"
)
```
이제 `token`을 사용해 네거티브 임베딩이 있는 이미지를 생성할 수 있습니다:
```py
prompt = "A cute brown bear eating a slice of pizza, stunning color scheme, masterpiece, illustration, EasyNegative"
negative_prompt = "EasyNegative"
image = pipeline(prompt, negative_prompt=negative_prompt, num_inference_steps=50).images[0]
image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_neg_embed.png" />
</div>
## LoRA
[Low-Rank Adaptation (LoRA)](https://huggingface.co/papers/2106.09685)은 속도가 빠르고 파일 크기가 (수백 MB로) 작기 때문에 널리 사용되는 학습 기법입니다. 이 가이드의 다른 방법과 마찬가지로, LoRA는 몇 장의 이미지만으로 새로운 스타일을 학습하도록 모델을 학습시킬 수 있습니다. 이는 diffusion 모델에 새로운 가중치를 삽입한 다음 전체 모델 대신 새로운 가중치만 학습시키는 방식으로 작동합니다. 따라서 LoRA를 더 빠르게 학습시키고 더 쉽게 저장할 수 있습니다.
<Tip>
LoRA는 다른 학습 방법과 함께 사용할 수 있는 매우 일반적인 학습 기법입니다. 예를 들어, DreamBooth와 LoRA로 모델을 학습하는 것이 일반적입니다. 또한 새롭고 고유한 이미지를 생성하기 위해 여러 개의 LoRA를 불러오고 병합하는 것이 점점 더 일반화되고 있습니다. 병합은 이 불러오기 가이드의 범위를 벗어나므로 자세한 내용은 심층적인 [LoRA 병합](merge_loras) 가이드에서 확인할 수 있습니다.
</Tip>
LoRA는 다른 모델과 함께 사용해야 합니다:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16).to("cuda")
```
그리고 [`~loaders.LoraLoaderMixin.load_lora_weights`] 메서드를 사용하여 [ostris/super-cereal-sdxl-lora](https://huggingface.co/ostris/super-cereal-sdxl-lora) 가중치를 불러오고 리포지토리에서 가중치 파일명을 지정합니다:
```py
pipeline.load_lora_weights("ostris/super-cereal-sdxl-lora", weight_name="cereal_box_sdxl_v1.safetensors")
prompt = "bears, pizza bites"
image = pipeline(prompt).images[0]
image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_lora.png" />
</div>
[`~loaders.LoraLoaderMixin.load_lora_weights`] 메서드는 LoRA 가중치를 UNet과 텍스트 인코더에 모두 불러옵니다. 이 메서드는 해당 케이스에서 LoRA를 불러오는 데 선호되는 방식입니다:
- LoRA 가중치에 UNet 및 텍스트 인코더에 대한 별도의 식별자가 없는 경우
- LoRA 가중치에 UNet과 텍스트 인코더에 대한 별도의 식별자가 있는 경우
하지만 LoRA 가중치만 UNet에 로드해야 하는 경우에는 [`~loaders.UNet2DConditionLoadersMixin.load_attn_procs`] 메서드를 사용할 수 있습니다. [jbilcke-hf/sdxl-cinematic-1](https://huggingface.co/jbilcke-hf/sdxl-cinematic-1) LoRA를 불러와 보겠습니다:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16).to("cuda")
pipeline.unet.load_attn_procs("jbilcke-hf/sdxl-cinematic-1", weight_name="pytorch_lora_weights.safetensors")
# 프롬프트에서 cnmt를 사용하여 LoRA를 트리거합니다.
prompt = "A cute cnmt eating a slice of pizza, stunning color scheme, masterpiece, illustration"
image = pipeline(prompt).images[0]
image
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_attn_proc.png" />
</div>
LoRA 가중치를 언로드하려면 [`~loaders.LoraLoaderMixin.unload_lora_weights`] 메서드를 사용하여 LoRA 가중치를 삭제하고 모델을 원래 가중치로 복원합니다:
```py
pipeline.unload_lora_weights()
```
### LoRA 가중치 스케일 조정하기
[`~loaders.LoraLoaderMixin.load_lora_weights`] 및 [`~loaders.UNet2DConditionLoadersMixin.load_attn_procs`] 모두 `cross_attention_kwargs={"scale": 0.5}` 파라미터를 전달하여 얼마나 LoRA 가중치를 사용할지 조정할 수 있습니다. 값이 `0`이면 기본 모델 가중치만 사용하는 것과 같고, 값이 `1`이면 완전히 미세 조정된 LoRA를 사용하는 것과 같습니다.
레이어당 사용되는 LoRA 가중치의 양을 보다 세밀하게 제어하려면 [`~loaders.LoraLoaderMixin.set_adapters`]를 사용하여 각 레이어의 가중치를 얼마만큼 조정할지 지정하는 딕셔너리를 전달할 수 있습니다.
```python
pipe = ... # 파이프라인 생성
pipe.load_lora_weights(..., adapter_name="my_adapter")
scales = {
"text_encoder": 0.5,
"text_encoder_2": 0.5, # 파이프에 두 번째 텍스트 인코더가 있는 경우에만 사용 가능
"unet": {
"down": 0.9, # down 부분의 모든 트랜스포머는 스케일 0.9를 사용
# "mid" # 이 예제에서는 "mid"가 지정되지 않았으므로 중간 부분의 모든 트랜스포머는 기본 스케일 1.0을 사용
"up": {
"block_0": 0.6, # # up의 0번째 블록에 있는 3개의 트랜스포머는 모두 스케일 0.6을 사용
"block_1": [0.4, 0.8, 1.0], # up의 첫 번째 블록에 있는 3개의 트랜스포머는 각각 스케일 0.4, 0.8, 1.0을 사용
}
}
}
pipe.set_adapters("my_adapter", scales)
```
이는 여러 어댑터에서도 작동합니다. 방법은 [이 가이드](https://huggingface.co/docs/diffusers/tutorials/using_peft_for_inference#customize-adapters-strength)를 참조하세요.
<Tip warning={true}>
현재 [`~loaders.LoraLoaderMixin.set_adapters`]는 어텐션 가중치의 스케일링만 지원합니다. LoRA에 다른 부분(예: resnets or down-/upsamplers)이 있는 경우 1.0의 스케일을 유지합니다.
</Tip>
### Kohya와 TheLastBen
커뮤니티에서 인기 있는 다른 LoRA trainer로는 [Kohya](https://github.com/kohya-ss/sd-scripts/)와 [TheLastBen](https://github.com/TheLastBen/fast-stable-diffusion)의 trainer가 있습니다. 이 trainer들은 🤗 Diffusers가 훈련한 것과는 다른 LoRA 체크포인트를 생성하지만, 같은 방식으로 불러올 수 있습니다.
<hfoptions id="other-trainers">
<hfoption id="Kohya">
Kohya LoRA를 불러오기 위해, 예시로 [Civitai](https://civitai.com/)에서 [Blueprintify SD XL 1.0](https://civitai.com/models/150986/blueprintify-sd-xl-10) 체크포인트를 다운로드합니다:
```sh
!wget https://civitai.com/api/download/models/168776 -O blueprintify-sd-xl-10.safetensors
```
LoRA 체크포인트를 [`~loaders.LoraLoaderMixin.load_lora_weights`] 메서드로 불러오고 `weight_name` 파라미터에 파일명을 지정합니다:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16).to("cuda")
pipeline.load_lora_weights("path/to/weights", weight_name="blueprintify-sd-xl-10.safetensors")
```
이미지를 생성합니다:
```py
# LoRA를 트리거하기 위해 bl3uprint를 프롬프트에 사용
prompt = "bl3uprint, a highly detailed blueprint of the eiffel tower, explaining how to build all parts, many txt, blueprint grid backdrop"
image = pipeline(prompt).images[0]
image
```
<Tip warning={true}>
Kohya LoRA를 🤗 Diffusers와 함께 사용할 때 몇 가지 제한 사항이 있습니다:
- [여기](https://github.com/huggingface/diffusers/pull/4287/#issuecomment-1655110736)에 설명된 여러 가지 이유로 인해 이미지가 ComfyUI와 같은 UI에서 생성된 이미지와 다르게 보일 수 있습니다.
- [LyCORIS 체크포인트](https://github.com/KohakuBlueleaf/LyCORIS)가 완전히 지원되지 않습니다. [`~loaders.LoraLoaderMixin.load_lora_weights`] 메서드는 LoRA 및 LoCon 모듈로 LyCORIS 체크포인트를 불러올 수 있지만, Hada 및 LoKR은 지원되지 않습니다.
</Tip>
</hfoption>
<hfoption id="TheLastBen">
TheLastBen에서 체크포인트를 불러오는 방법은 매우 유사합니다. 예를 들어, [TheLastBen/William_Eggleston_Style_SDXL](https://huggingface.co/TheLastBen/William_Eggleston_Style_SDXL) 체크포인트를 불러오려면:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16).to("cuda")
pipeline.load_lora_weights("TheLastBen/William_Eggleston_Style_SDXL", weight_name="wegg.safetensors")
# LoRA를 트리거하기 위해 william eggleston를 프롬프트에 사용
prompt = "a house by william eggleston, sunrays, beautiful, sunlight, sunrays, beautiful"
image = pipeline(prompt=prompt).images[0]
image
```
</hfoption>
</hfoptions>
## IP-Adapter
[IP-Adapter](https://ip-adapter.github.io/)는 모든 diffusion 모델에 이미지 프롬프트를 사용할 수 있는 경량 어댑터입니다. 이 어댑터는 이미지와 텍스트 feature의 cross-attention 레이어를 분리하여 작동합니다. 다른 모든 모델 컴포넌트튼 freeze되고 UNet의 embedded 이미지 features만 학습됩니다. 따라서 IP-Adapter 파일은 일반적으로 최대 100MB에 불과합니다.
다양한 작업과 구체적인 사용 사례에 IP-Adapter를 사용하는 방법에 대한 자세한 내용은 [IP-Adapter](../using-diffusers/ip_adapter) 가이드에서 확인할 수 있습니다.
> [!TIP]
> Diffusers는 현재 가장 많이 사용되는 일부 파이프라인에 대해서만 IP-Adapter를 지원합니다. 멋진 사용 사례가 있는 지원되지 않는 파이프라인에 IP-Adapter를 통합하고 싶다면 언제든지 기능 요청을 여세요!
> 공식 IP-Adapter 체크포인트는 [h94/IP-Adapter](https://huggingface.co/h94/IP-Adapter)에서 확인할 수 있습니다.
시작하려면 Stable Diffusion 체크포인트를 불러오세요.
```py
from diffusers import AutoPipelineForText2Image
import torch
from diffusers.utils import load_image
pipeline = AutoPipelineForText2Image.from_pretrained("runwayml/stable-diffusion-v1-5", torch_dtype=torch.float16).to("cuda")
```
그런 다음 IP-Adapter 가중치를 불러와 [`~loaders.IPAdapterMixin.load_ip_adapter`] 메서드를 사용하여 파이프라인에 추가합니다.
```py
pipeline.load_ip_adapter("h94/IP-Adapter", subfolder="models", weight_name="ip-adapter_sd15.bin")
```
불러온 뒤, 이미지 및 텍스트 프롬프트가 있는 파이프라인을 사용하여 이미지 생성 프로세스를 가이드할 수 있습니다.
```py
image = load_image("https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/load_neg_embed.png")
generator = torch.Generator(device="cpu").manual_seed(33)
images = pipeline(
prompt='best quality, high quality, wearing sunglasses',
ip_adapter_image=image,
negative_prompt="monochrome, lowres, bad anatomy, worst quality, low quality",
num_inference_steps=50,
generator=generator,
).images[0]
images
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/YiYiXu/testing-images/resolve/main/ip-bear.png" />
</div>
### IP-Adapter Plus
IP-Adapter는 이미지 인코더를 사용하여 이미지 feature를 생성합니다. IP-Adapter 리포지토리에 `image_encoder` 하위 폴더가 있는 경우, 이미지 인코더가 자동으로 불러와 파이프라인에 등록됩니다. 그렇지 않은 경우, [`~transformers.CLIPVisionModelWithProjection`] 모델을 사용하여 이미지 인코더를 명시적으로 불러와 파이프라인에 전달해야 합니다.
이는 ViT-H 이미지 인코더를 사용하는 *IP-Adapter Plus* 체크포인트에 해당하는 케이스입니다.
```py
from transformers import CLIPVisionModelWithProjection
image_encoder = CLIPVisionModelWithProjection.from_pretrained(
"h94/IP-Adapter",
subfolder="models/image_encoder",
torch_dtype=torch.float16
)
pipeline = AutoPipelineForText2Image.from_pretrained(
"stabilityai/stable-diffusion-xl-base-1.0",
image_encoder=image_encoder,
torch_dtype=torch.float16
).to("cuda")
pipeline.load_ip_adapter("h94/IP-Adapter", subfolder="sdxl_models", weight_name="ip-adapter-plus_sdxl_vit-h.safetensors")
```
### IP-Adapter Face ID 모델
IP-Adapter FaceID 모델은 CLIP 이미지 임베딩 대신 `insightface`에서 생성한 이미지 임베딩을 사용하는 실험적인 IP Adapter입니다. 이러한 모델 중 일부는 LoRA를 사용하여 ID 일관성을 개선하기도 합니다.
이러한 모델을 사용하려면 `insightface`와 해당 요구 사항을 모두 설치해야 합니다.
<Tip warning={true}>
InsightFace 사전학습된 모델은 비상업적 연구 목적으로만 사용할 수 있으므로, IP-Adapter-FaceID 모델은 연구 목적으로만 릴리즈되었으며 상업적 용도로는 사용할 수 없습니다.
</Tip>
```py
pipeline = AutoPipelineForText2Image.from_pretrained(
"stabilityai/stable-diffusion-xl-base-1.0",
torch_dtype=torch.float16
).to("cuda")
pipeline.load_ip_adapter("h94/IP-Adapter-FaceID", subfolder=None, weight_name="ip-adapter-faceid_sdxl.bin", image_encoder_folder=None)
```
두 가지 IP 어댑터 FaceID Plus 모델 중 하나를 사용하려는 경우, 이 모델들은 더 나은 사실감을 얻기 위해 `insightface`와 CLIP 이미지 임베딩을 모두 사용하므로, CLIP 이미지 인코더도 불러와야 합니다.
```py
from transformers import CLIPVisionModelWithProjection
image_encoder = CLIPVisionModelWithProjection.from_pretrained(
"laion/CLIP-ViT-H-14-laion2B-s32B-b79K",
torch_dtype=torch.float16,
)
pipeline = AutoPipelineForText2Image.from_pretrained(
"runwayml/stable-diffusion-v1-5",
image_encoder=image_encoder,
torch_dtype=torch.float16
).to("cuda")
pipeline.load_ip_adapter("h94/IP-Adapter-FaceID", subfolder=None, weight_name="ip-adapter-faceid-plus_sd15.bin")
```
|
diffusers/docs/source/ko/using-diffusers/loading_adapters.md/0
|
{
"file_path": "diffusers/docs/source/ko/using-diffusers/loading_adapters.md",
"repo_id": "diffusers",
"token_count": 12254
}
| 106
|
- sections:
- local: index
title: 🧨 Diffusers
- local: quicktour
title: 快速入门
- local: stable_diffusion
title: 有效和高效的扩散
- local: installation
title: 安装
title: 开始
|
diffusers/docs/source/zh/_toctree.yml/0
|
{
"file_path": "diffusers/docs/source/zh/_toctree.yml",
"repo_id": "diffusers",
"token_count": 100
}
| 107
|
# -*- coding: utf-8 -*-
import inspect
from typing import Optional, Union
import numpy as np
import PIL.Image
import torch
from torch.nn import functional as F
from torchvision import transforms
from transformers import CLIPImageProcessor, CLIPModel, CLIPTextModel, CLIPTokenizer
from diffusers import (
AutoencoderKL,
DDIMScheduler,
DPMSolverMultistepScheduler,
LMSDiscreteScheduler,
PNDMScheduler,
UNet2DConditionModel,
)
from diffusers.pipelines.pipeline_utils import DiffusionPipeline, StableDiffusionMixin
from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion import StableDiffusionPipelineOutput
from diffusers.utils import PIL_INTERPOLATION
from diffusers.utils.torch_utils import randn_tensor
def preprocess(image, w, h):
if isinstance(image, torch.Tensor):
return image
elif isinstance(image, PIL.Image.Image):
image = [image]
if isinstance(image[0], PIL.Image.Image):
image = [np.array(i.resize((w, h), resample=PIL_INTERPOLATION["lanczos"]))[None, :] for i in image]
image = np.concatenate(image, axis=0)
image = np.array(image).astype(np.float32) / 255.0
image = image.transpose(0, 3, 1, 2)
image = 2.0 * image - 1.0
image = torch.from_numpy(image)
elif isinstance(image[0], torch.Tensor):
image = torch.cat(image, dim=0)
return image
def slerp(t, v0, v1, DOT_THRESHOLD=0.9995):
if not isinstance(v0, np.ndarray):
inputs_are_torch = True
input_device = v0.device
v0 = v0.cpu().numpy()
v1 = v1.cpu().numpy()
dot = np.sum(v0 * v1 / (np.linalg.norm(v0) * np.linalg.norm(v1)))
if np.abs(dot) > DOT_THRESHOLD:
v2 = (1 - t) * v0 + t * v1
else:
theta_0 = np.arccos(dot)
sin_theta_0 = np.sin(theta_0)
theta_t = theta_0 * t
sin_theta_t = np.sin(theta_t)
s0 = np.sin(theta_0 - theta_t) / sin_theta_0
s1 = sin_theta_t / sin_theta_0
v2 = s0 * v0 + s1 * v1
if inputs_are_torch:
v2 = torch.from_numpy(v2).to(input_device)
return v2
def spherical_dist_loss(x, y):
x = F.normalize(x, dim=-1)
y = F.normalize(y, dim=-1)
return (x - y).norm(dim=-1).div(2).arcsin().pow(2).mul(2)
def set_requires_grad(model, value):
for param in model.parameters():
param.requires_grad = value
class CLIPGuidedImagesMixingStableDiffusion(DiffusionPipeline, StableDiffusionMixin):
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
clip_model: CLIPModel,
tokenizer: CLIPTokenizer,
unet: UNet2DConditionModel,
scheduler: Union[PNDMScheduler, LMSDiscreteScheduler, DDIMScheduler, DPMSolverMultistepScheduler],
feature_extractor: CLIPImageProcessor,
coca_model=None,
coca_tokenizer=None,
coca_transform=None,
):
super().__init__()
self.register_modules(
vae=vae,
text_encoder=text_encoder,
clip_model=clip_model,
tokenizer=tokenizer,
unet=unet,
scheduler=scheduler,
feature_extractor=feature_extractor,
coca_model=coca_model,
coca_tokenizer=coca_tokenizer,
coca_transform=coca_transform,
)
self.feature_extractor_size = (
feature_extractor.size
if isinstance(feature_extractor.size, int)
else feature_extractor.size["shortest_edge"]
)
self.normalize = transforms.Normalize(mean=feature_extractor.image_mean, std=feature_extractor.image_std)
set_requires_grad(self.text_encoder, False)
set_requires_grad(self.clip_model, False)
def freeze_vae(self):
set_requires_grad(self.vae, False)
def unfreeze_vae(self):
set_requires_grad(self.vae, True)
def freeze_unet(self):
set_requires_grad(self.unet, False)
def unfreeze_unet(self):
set_requires_grad(self.unet, True)
def get_timesteps(self, num_inference_steps, strength, device):
# get the original timestep using init_timestep
init_timestep = min(int(num_inference_steps * strength), num_inference_steps)
t_start = max(num_inference_steps - init_timestep, 0)
timesteps = self.scheduler.timesteps[t_start:]
return timesteps, num_inference_steps - t_start
def prepare_latents(self, image, timestep, batch_size, dtype, device, generator=None):
if not isinstance(image, torch.Tensor):
raise ValueError(f"`image` has to be of type `torch.Tensor` but is {type(image)}")
image = image.to(device=device, dtype=dtype)
if isinstance(generator, list):
init_latents = [
self.vae.encode(image[i : i + 1]).latent_dist.sample(generator[i]) for i in range(batch_size)
]
init_latents = torch.cat(init_latents, dim=0)
else:
init_latents = self.vae.encode(image).latent_dist.sample(generator)
# Hardcode 0.18215 because stable-diffusion-2-base has not self.vae.config.scaling_factor
init_latents = 0.18215 * init_latents
init_latents = init_latents.repeat_interleave(batch_size, dim=0)
noise = randn_tensor(init_latents.shape, generator=generator, device=device, dtype=dtype)
# get latents
init_latents = self.scheduler.add_noise(init_latents, noise, timestep)
latents = init_latents
return latents
def get_image_description(self, image):
transformed_image = self.coca_transform(image).unsqueeze(0)
with torch.no_grad(), torch.cuda.amp.autocast():
generated = self.coca_model.generate(transformed_image.to(device=self.device, dtype=self.coca_model.dtype))
generated = self.coca_tokenizer.decode(generated[0].cpu().numpy())
return generated.split("<end_of_text>")[0].replace("<start_of_text>", "").rstrip(" .,")
def get_clip_image_embeddings(self, image, batch_size):
clip_image_input = self.feature_extractor.preprocess(image)
clip_image_features = torch.from_numpy(clip_image_input["pixel_values"][0]).unsqueeze(0).to(self.device).half()
image_embeddings_clip = self.clip_model.get_image_features(clip_image_features)
image_embeddings_clip = image_embeddings_clip / image_embeddings_clip.norm(p=2, dim=-1, keepdim=True)
image_embeddings_clip = image_embeddings_clip.repeat_interleave(batch_size, dim=0)
return image_embeddings_clip
@torch.enable_grad()
def cond_fn(
self,
latents,
timestep,
index,
text_embeddings,
noise_pred_original,
original_image_embeddings_clip,
clip_guidance_scale,
):
latents = latents.detach().requires_grad_()
latent_model_input = self.scheduler.scale_model_input(latents, timestep)
# predict the noise residual
noise_pred = self.unet(latent_model_input, timestep, encoder_hidden_states=text_embeddings).sample
if isinstance(self.scheduler, (PNDMScheduler, DDIMScheduler, DPMSolverMultistepScheduler)):
alpha_prod_t = self.scheduler.alphas_cumprod[timestep]
beta_prod_t = 1 - alpha_prod_t
# compute predicted original sample from predicted noise also called
# "predicted x_0" of formula (12) from https://arxiv.org/pdf/2010.02502.pdf
pred_original_sample = (latents - beta_prod_t ** (0.5) * noise_pred) / alpha_prod_t ** (0.5)
fac = torch.sqrt(beta_prod_t)
sample = pred_original_sample * (fac) + latents * (1 - fac)
elif isinstance(self.scheduler, LMSDiscreteScheduler):
sigma = self.scheduler.sigmas[index]
sample = latents - sigma * noise_pred
else:
raise ValueError(f"scheduler type {type(self.scheduler)} not supported")
# Hardcode 0.18215 because stable-diffusion-2-base has not self.vae.config.scaling_factor
sample = 1 / 0.18215 * sample
image = self.vae.decode(sample).sample
image = (image / 2 + 0.5).clamp(0, 1)
image = transforms.Resize(self.feature_extractor_size)(image)
image = self.normalize(image).to(latents.dtype)
image_embeddings_clip = self.clip_model.get_image_features(image)
image_embeddings_clip = image_embeddings_clip / image_embeddings_clip.norm(p=2, dim=-1, keepdim=True)
loss = spherical_dist_loss(image_embeddings_clip, original_image_embeddings_clip).mean() * clip_guidance_scale
grads = -torch.autograd.grad(loss, latents)[0]
if isinstance(self.scheduler, LMSDiscreteScheduler):
latents = latents.detach() + grads * (sigma**2)
noise_pred = noise_pred_original
else:
noise_pred = noise_pred_original - torch.sqrt(beta_prod_t) * grads
return noise_pred, latents
@torch.no_grad()
def __call__(
self,
style_image: Union[torch.Tensor, PIL.Image.Image],
content_image: Union[torch.Tensor, PIL.Image.Image],
style_prompt: Optional[str] = None,
content_prompt: Optional[str] = None,
height: Optional[int] = 512,
width: Optional[int] = 512,
noise_strength: float = 0.6,
num_inference_steps: Optional[int] = 50,
guidance_scale: Optional[float] = 7.5,
batch_size: Optional[int] = 1,
eta: float = 0.0,
clip_guidance_scale: Optional[float] = 100,
generator: Optional[torch.Generator] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
slerp_latent_style_strength: float = 0.8,
slerp_prompt_style_strength: float = 0.1,
slerp_clip_image_style_strength: float = 0.1,
):
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(f"You have passed {batch_size} batch_size, but only {len(generator)} generators.")
if height % 8 != 0 or width % 8 != 0:
raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.")
if isinstance(generator, torch.Generator) and batch_size > 1:
generator = [generator] + [None] * (batch_size - 1)
coca_is_none = [
("model", self.coca_model is None),
("tokenizer", self.coca_tokenizer is None),
("transform", self.coca_transform is None),
]
coca_is_none = [x[0] for x in coca_is_none if x[1]]
coca_is_none_str = ", ".join(coca_is_none)
# generate prompts with coca model if prompt is None
if content_prompt is None:
if len(coca_is_none):
raise ValueError(
f"Content prompt is None and CoCa [{coca_is_none_str}] is None."
f"Set prompt or pass Coca [{coca_is_none_str}] to DiffusionPipeline."
)
content_prompt = self.get_image_description(content_image)
if style_prompt is None:
if len(coca_is_none):
raise ValueError(
f"Style prompt is None and CoCa [{coca_is_none_str}] is None."
f" Set prompt or pass Coca [{coca_is_none_str}] to DiffusionPipeline."
)
style_prompt = self.get_image_description(style_image)
# get prompt text embeddings for content and style
content_text_input = self.tokenizer(
content_prompt,
padding="max_length",
max_length=self.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
content_text_embeddings = self.text_encoder(content_text_input.input_ids.to(self.device))[0]
style_text_input = self.tokenizer(
style_prompt,
padding="max_length",
max_length=self.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
style_text_embeddings = self.text_encoder(style_text_input.input_ids.to(self.device))[0]
text_embeddings = slerp(slerp_prompt_style_strength, content_text_embeddings, style_text_embeddings)
# duplicate text embeddings for each generation per prompt
text_embeddings = text_embeddings.repeat_interleave(batch_size, dim=0)
# set timesteps
accepts_offset = "offset" in set(inspect.signature(self.scheduler.set_timesteps).parameters.keys())
extra_set_kwargs = {}
if accepts_offset:
extra_set_kwargs["offset"] = 1
self.scheduler.set_timesteps(num_inference_steps, **extra_set_kwargs)
# Some schedulers like PNDM have timesteps as arrays
# It's more optimized to move all timesteps to correct device beforehand
self.scheduler.timesteps.to(self.device)
timesteps, num_inference_steps = self.get_timesteps(num_inference_steps, noise_strength, self.device)
latent_timestep = timesteps[:1].repeat(batch_size)
# Preprocess image
preprocessed_content_image = preprocess(content_image, width, height)
content_latents = self.prepare_latents(
preprocessed_content_image, latent_timestep, batch_size, text_embeddings.dtype, self.device, generator
)
preprocessed_style_image = preprocess(style_image, width, height)
style_latents = self.prepare_latents(
preprocessed_style_image, latent_timestep, batch_size, text_embeddings.dtype, self.device, generator
)
latents = slerp(slerp_latent_style_strength, content_latents, style_latents)
if clip_guidance_scale > 0:
content_clip_image_embedding = self.get_clip_image_embeddings(content_image, batch_size)
style_clip_image_embedding = self.get_clip_image_embeddings(style_image, batch_size)
clip_image_embeddings = slerp(
slerp_clip_image_style_strength, content_clip_image_embedding, style_clip_image_embedding
)
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
do_classifier_free_guidance = guidance_scale > 1.0
# get unconditional embeddings for classifier free guidance
if do_classifier_free_guidance:
max_length = content_text_input.input_ids.shape[-1]
uncond_input = self.tokenizer([""], padding="max_length", max_length=max_length, return_tensors="pt")
uncond_embeddings = self.text_encoder(uncond_input.input_ids.to(self.device))[0]
# duplicate unconditional embeddings for each generation per prompt
uncond_embeddings = uncond_embeddings.repeat_interleave(batch_size, dim=0)
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
text_embeddings = torch.cat([uncond_embeddings, text_embeddings])
# get the initial random noise unless the user supplied it
# Unlike in other pipelines, latents need to be generated in the target device
# for 1-to-1 results reproducibility with the CompVis implementation.
# However this currently doesn't work in `mps`.
latents_shape = (batch_size, self.unet.config.in_channels, height // 8, width // 8)
latents_dtype = text_embeddings.dtype
if latents is None:
if self.device.type == "mps":
# randn does not work reproducibly on mps
latents = torch.randn(latents_shape, generator=generator, device="cpu", dtype=latents_dtype).to(
self.device
)
else:
latents = torch.randn(latents_shape, generator=generator, device=self.device, dtype=latents_dtype)
else:
if latents.shape != latents_shape:
raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {latents_shape}")
latents = latents.to(self.device)
# scale the initial noise by the standard deviation required by the scheduler
latents = latents * self.scheduler.init_noise_sigma
# prepare extra kwargs for the scheduler step, since not all schedulers have the same signature
# eta (η) is only used with the DDIMScheduler, it will be ignored for other schedulers.
# eta corresponds to η in DDIM paper: https://arxiv.org/abs/2010.02502
# and should be between [0, 1]
accepts_eta = "eta" in set(inspect.signature(self.scheduler.step).parameters.keys())
extra_step_kwargs = {}
if accepts_eta:
extra_step_kwargs["eta"] = eta
# check if the scheduler accepts generator
accepts_generator = "generator" in set(inspect.signature(self.scheduler.step).parameters.keys())
if accepts_generator:
extra_step_kwargs["generator"] = generator
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
latent_model_input = self.scheduler.scale_model_input(latent_model_input, t)
# predict the noise residual
noise_pred = self.unet(latent_model_input, t, encoder_hidden_states=text_embeddings).sample
# perform classifier free guidance
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# perform clip guidance
if clip_guidance_scale > 0:
text_embeddings_for_guidance = (
text_embeddings.chunk(2)[1] if do_classifier_free_guidance else text_embeddings
)
noise_pred, latents = self.cond_fn(
latents,
t,
i,
text_embeddings_for_guidance,
noise_pred,
clip_image_embeddings,
clip_guidance_scale,
)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs).prev_sample
progress_bar.update()
# Hardcode 0.18215 because stable-diffusion-2-base has not self.vae.config.scaling_factor
latents = 1 / 0.18215 * latents
image = self.vae.decode(latents).sample
image = (image / 2 + 0.5).clamp(0, 1)
image = image.cpu().permute(0, 2, 3, 1).numpy()
if output_type == "pil":
image = self.numpy_to_pil(image)
if not return_dict:
return (image, None)
return StableDiffusionPipelineOutput(images=image, nsfw_content_detected=None)
|
diffusers/examples/community/clip_guided_images_mixing_stable_diffusion.py/0
|
{
"file_path": "diffusers/examples/community/clip_guided_images_mixing_stable_diffusion.py",
"repo_id": "diffusers",
"token_count": 8765
}
| 108
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Any, Dict, List, Optional, Tuple, Union
import torch
import torch.nn as nn
import torch.utils.checkpoint
from transformers import CLIPImageProcessor, CLIPTextModel, CLIPTokenizer, CLIPVisionModelWithProjection
from diffusers.configuration_utils import register_to_config
from diffusers.image_processor import VaeImageProcessor
from diffusers.models.autoencoders import AutoencoderKL
from diffusers.models.unets.unet_2d_condition import UNet2DConditionModel, UNet2DConditionOutput
from diffusers.pipelines.stable_diffusion import StableDiffusionPipeline
from diffusers.pipelines.stable_diffusion.safety_checker import StableDiffusionSafetyChecker
from diffusers.schedulers import KarrasDiffusionSchedulers
from diffusers.utils import USE_PEFT_BACKEND, deprecate, logging, scale_lora_layers, unscale_lora_layers
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
class UNet2DConditionModelHighResFix(UNet2DConditionModel):
r"""
A conditional 2D UNet model that applies Kohya fix proposed for high resolution image generation.
This model inherits from [`UNet2DConditionModel`]. Check the superclass documentation for learning about all the parameters.
Parameters:
high_res_fix (`List[Dict]`, *optional*, defaults to `[{'timestep': 600, 'scale_factor': 0.5, 'block_num': 1}]`):
Enables Kohya fix for high resolution generation. The activation maps are scaled based on the scale_factor up to the timestep at specified block_num.
"""
_supports_gradient_checkpointing = True
@register_to_config
def __init__(self, high_res_fix: List[Dict] = [{"timestep": 600, "scale_factor": 0.5, "block_num": 1}], **kwargs):
super().__init__(**kwargs)
if high_res_fix:
self.config.high_res_fix = sorted(high_res_fix, key=lambda x: x["timestep"], reverse=True)
@classmethod
def _resize(cls, sample, target=None, scale_factor=1, mode="bicubic"):
dtype = sample.dtype
if dtype == torch.bfloat16:
sample = sample.to(torch.float32)
if target is not None:
if sample.shape[-2:] != target.shape[-2:]:
sample = nn.functional.interpolate(sample, size=target.shape[-2:], mode=mode, align_corners=False)
elif scale_factor != 1:
sample = nn.functional.interpolate(sample, scale_factor=scale_factor, mode=mode, align_corners=False)
return sample.to(dtype)
def forward(
self,
sample: torch.FloatTensor,
timestep: Union[torch.Tensor, float, int],
encoder_hidden_states: torch.Tensor,
class_labels: Optional[torch.Tensor] = None,
timestep_cond: Optional[torch.Tensor] = None,
attention_mask: Optional[torch.Tensor] = None,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
added_cond_kwargs: Optional[Dict[str, torch.Tensor]] = None,
down_block_additional_residuals: Optional[Tuple[torch.Tensor]] = None,
mid_block_additional_residual: Optional[torch.Tensor] = None,
down_intrablock_additional_residuals: Optional[Tuple[torch.Tensor]] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
return_dict: bool = True,
) -> Union[UNet2DConditionOutput, Tuple]:
r"""
The [`UNet2DConditionModel`] forward method.
Args:
sample (`torch.FloatTensor`):
The noisy input tensor with the following shape `(batch, channel, height, width)`.
timestep (`torch.FloatTensor` or `float` or `int`): The number of timesteps to denoise an input.
encoder_hidden_states (`torch.FloatTensor`):
The encoder hidden states with shape `(batch, sequence_length, feature_dim)`.
class_labels (`torch.Tensor`, *optional*, defaults to `None`):
Optional class labels for conditioning. Their embeddings will be summed with the timestep embeddings.
timestep_cond: (`torch.Tensor`, *optional*, defaults to `None`):
Conditional embeddings for timestep. If provided, the embeddings will be summed with the samples passed
through the `self.time_embedding` layer to obtain the timestep embeddings.
attention_mask (`torch.Tensor`, *optional*, defaults to `None`):
An attention mask of shape `(batch, key_tokens)` is applied to `encoder_hidden_states`. If `1` the mask
is kept, otherwise if `0` it is discarded. Mask will be converted into a bias, which adds large
negative values to the attention scores corresponding to "discard" tokens.
cross_attention_kwargs (`dict`, *optional*):
A kwargs dictionary that if specified is passed along to the `AttentionProcessor` as defined under
`self.processor` in
[diffusers.models.attention_processor](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
added_cond_kwargs: (`dict`, *optional*):
A kwargs dictionary containing additional embeddings that if specified are added to the embeddings that
are passed along to the UNet blocks.
down_block_additional_residuals: (`tuple` of `torch.Tensor`, *optional*):
A tuple of tensors that if specified are added to the residuals of down unet blocks.
mid_block_additional_residual: (`torch.Tensor`, *optional*):
A tensor that if specified is added to the residual of the middle unet block.
down_intrablock_additional_residuals (`tuple` of `torch.Tensor`, *optional*):
additional residuals to be added within UNet down blocks, for example from T2I-Adapter side model(s)
encoder_attention_mask (`torch.Tensor`):
A cross-attention mask of shape `(batch, sequence_length)` is applied to `encoder_hidden_states`. If
`True` the mask is kept, otherwise if `False` it is discarded. Mask will be converted into a bias,
which adds large negative values to the attention scores corresponding to "discard" tokens.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~models.unets.unet_2d_condition.UNet2DConditionOutput`] instead of a plain
tuple.
Returns:
[`~models.unets.unet_2d_condition.UNet2DConditionOutput`] or `tuple`:
If `return_dict` is True, an [`~models.unets.unet_2d_condition.UNet2DConditionOutput`] is returned,
otherwise a `tuple` is returned where the first element is the sample tensor.
"""
# By default samples have to be AT least a multiple of the overall upsampling factor.
# The overall upsampling factor is equal to 2 ** (# num of upsampling layers).
# However, the upsampling interpolation output size can be forced to fit any upsampling size
# on the fly if necessary.
default_overall_up_factor = 2**self.num_upsamplers
# upsample size should be forwarded when sample is not a multiple of `default_overall_up_factor`
forward_upsample_size = False
upsample_size = None
for dim in sample.shape[-2:]:
if dim % default_overall_up_factor != 0:
# Forward upsample size to force interpolation output size.
forward_upsample_size = True
break
# ensure attention_mask is a bias, and give it a singleton query_tokens dimension
# expects mask of shape:
# [batch, key_tokens]
# adds singleton query_tokens dimension:
# [batch, 1, key_tokens]
# this helps to broadcast it as a bias over attention scores, which will be in one of the following shapes:
# [batch, heads, query_tokens, key_tokens] (e.g. torch sdp attn)
# [batch * heads, query_tokens, key_tokens] (e.g. xformers or classic attn)
if attention_mask is not None:
# assume that mask is expressed as:
# (1 = keep, 0 = discard)
# convert mask into a bias that can be added to attention scores:
# (keep = +0, discard = -10000.0)
attention_mask = (1 - attention_mask.to(sample.dtype)) * -10000.0
attention_mask = attention_mask.unsqueeze(1)
# convert encoder_attention_mask to a bias the same way we do for attention_mask
if encoder_attention_mask is not None:
encoder_attention_mask = (1 - encoder_attention_mask.to(sample.dtype)) * -10000.0
encoder_attention_mask = encoder_attention_mask.unsqueeze(1)
# 0. center input if necessary
if self.config.center_input_sample:
sample = 2 * sample - 1.0
# 1. time
t_emb = self.get_time_embed(sample=sample, timestep=timestep)
emb = self.time_embedding(t_emb, timestep_cond)
aug_emb = None
class_emb = self.get_class_embed(sample=sample, class_labels=class_labels)
if class_emb is not None:
if self.config.class_embeddings_concat:
emb = torch.cat([emb, class_emb], dim=-1)
else:
emb = emb + class_emb
aug_emb = self.get_aug_embed(
emb=emb, encoder_hidden_states=encoder_hidden_states, added_cond_kwargs=added_cond_kwargs
)
if self.config.addition_embed_type == "image_hint":
aug_emb, hint = aug_emb
sample = torch.cat([sample, hint], dim=1)
emb = emb + aug_emb if aug_emb is not None else emb
if self.time_embed_act is not None:
emb = self.time_embed_act(emb)
encoder_hidden_states = self.process_encoder_hidden_states(
encoder_hidden_states=encoder_hidden_states, added_cond_kwargs=added_cond_kwargs
)
# 2. pre-process
sample = self.conv_in(sample)
# 2.5 GLIGEN position net
if cross_attention_kwargs is not None and cross_attention_kwargs.get("gligen", None) is not None:
cross_attention_kwargs = cross_attention_kwargs.copy()
gligen_args = cross_attention_kwargs.pop("gligen")
cross_attention_kwargs["gligen"] = {"objs": self.position_net(**gligen_args)}
# 3. down
# we're popping the `scale` instead of getting it because otherwise `scale` will be propagated
# to the internal blocks and will raise deprecation warnings. this will be confusing for our users.
if cross_attention_kwargs is not None:
cross_attention_kwargs = cross_attention_kwargs.copy()
lora_scale = cross_attention_kwargs.pop("scale", 1.0)
else:
lora_scale = 1.0
if USE_PEFT_BACKEND:
# weight the lora layers by setting `lora_scale` for each PEFT layer
scale_lora_layers(self, lora_scale)
is_controlnet = mid_block_additional_residual is not None and down_block_additional_residuals is not None
# using new arg down_intrablock_additional_residuals for T2I-Adapters, to distinguish from controlnets
is_adapter = down_intrablock_additional_residuals is not None
# maintain backward compatibility for legacy usage, where
# T2I-Adapter and ControlNet both use down_block_additional_residuals arg
# but can only use one or the other
if not is_adapter and mid_block_additional_residual is None and down_block_additional_residuals is not None:
deprecate(
"T2I should not use down_block_additional_residuals",
"1.3.0",
"Passing intrablock residual connections with `down_block_additional_residuals` is deprecated \
and will be removed in diffusers 1.3.0. `down_block_additional_residuals` should only be used \
for ControlNet. Please make sure use `down_intrablock_additional_residuals` instead. ",
standard_warn=False,
)
down_intrablock_additional_residuals = down_block_additional_residuals
is_adapter = True
down_block_res_samples = (sample,)
for down_i, downsample_block in enumerate(self.down_blocks):
if hasattr(downsample_block, "has_cross_attention") and downsample_block.has_cross_attention:
# For t2i-adapter CrossAttnDownBlock2D
additional_residuals = {}
if is_adapter and len(down_intrablock_additional_residuals) > 0:
additional_residuals["additional_residuals"] = down_intrablock_additional_residuals.pop(0)
sample, res_samples = downsample_block(
hidden_states=sample,
temb=emb,
encoder_hidden_states=encoder_hidden_states,
attention_mask=attention_mask,
cross_attention_kwargs=cross_attention_kwargs,
encoder_attention_mask=encoder_attention_mask,
**additional_residuals,
)
else:
sample, res_samples = downsample_block(hidden_states=sample, temb=emb)
if is_adapter and len(down_intrablock_additional_residuals) > 0:
sample += down_intrablock_additional_residuals.pop(0)
down_block_res_samples += res_samples
# kohya high res fix
if self.config.high_res_fix:
for high_res_fix in self.config.high_res_fix:
if timestep > high_res_fix["timestep"] and down_i == high_res_fix["block_num"]:
sample = self.__class__._resize(sample, scale_factor=high_res_fix["scale_factor"])
break
if is_controlnet:
new_down_block_res_samples = ()
for down_block_res_sample, down_block_additional_residual in zip(
down_block_res_samples, down_block_additional_residuals
):
down_block_res_sample = down_block_res_sample + down_block_additional_residual
new_down_block_res_samples = new_down_block_res_samples + (down_block_res_sample,)
down_block_res_samples = new_down_block_res_samples
# 4. mid
if self.mid_block is not None:
if hasattr(self.mid_block, "has_cross_attention") and self.mid_block.has_cross_attention:
sample = self.mid_block(
sample,
emb,
encoder_hidden_states=encoder_hidden_states,
attention_mask=attention_mask,
cross_attention_kwargs=cross_attention_kwargs,
encoder_attention_mask=encoder_attention_mask,
)
else:
sample = self.mid_block(sample, emb)
# To support T2I-Adapter-XL
if (
is_adapter
and len(down_intrablock_additional_residuals) > 0
and sample.shape == down_intrablock_additional_residuals[0].shape
):
sample += down_intrablock_additional_residuals.pop(0)
if is_controlnet:
sample = sample + mid_block_additional_residual
# 5. up
for i, upsample_block in enumerate(self.up_blocks):
is_final_block = i == len(self.up_blocks) - 1
res_samples = down_block_res_samples[-len(upsample_block.resnets) :]
down_block_res_samples = down_block_res_samples[: -len(upsample_block.resnets)]
# up scaling of kohya high res fix
if self.config.high_res_fix is not None:
if res_samples[0].shape[-2:] != sample.shape[-2:]:
sample = self.__class__._resize(sample, target=res_samples[0])
res_samples_up_sampled = (res_samples[0],)
for res_sample in res_samples[1:]:
res_samples_up_sampled += (self.__class__._resize(res_sample, target=res_samples[0]),)
res_samples = res_samples_up_sampled
# if we have not reached the final block and need to forward the
# upsample size, we do it here
if not is_final_block and forward_upsample_size:
upsample_size = down_block_res_samples[-1].shape[2:]
if hasattr(upsample_block, "has_cross_attention") and upsample_block.has_cross_attention:
sample = upsample_block(
hidden_states=sample,
temb=emb,
res_hidden_states_tuple=res_samples,
encoder_hidden_states=encoder_hidden_states,
cross_attention_kwargs=cross_attention_kwargs,
upsample_size=upsample_size,
attention_mask=attention_mask,
encoder_attention_mask=encoder_attention_mask,
)
else:
sample = upsample_block(
hidden_states=sample,
temb=emb,
res_hidden_states_tuple=res_samples,
upsample_size=upsample_size,
)
# 6. post-process
if self.conv_norm_out:
sample = self.conv_norm_out(sample)
sample = self.conv_act(sample)
sample = self.conv_out(sample)
if USE_PEFT_BACKEND:
# remove `lora_scale` from each PEFT layer
unscale_lora_layers(self, lora_scale)
if not return_dict:
return (sample,)
return UNet2DConditionOutput(sample=sample)
@classmethod
def from_unet(cls, unet: UNet2DConditionModel, high_res_fix: list):
config = dict((unet.config))
config["high_res_fix"] = high_res_fix
unet_high_res = cls(**config)
unet_high_res.load_state_dict(unet.state_dict())
unet_high_res.to(unet.dtype)
return unet_high_res
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import torch
>>> from diffusers import DiffusionPipeline
>>> pipe = DiffusionPipeline.from_pretrained("CompVis/stable-diffusion-v1-4",
custom_pipeline="kohya_hires_fix",
torch_dtype=torch.float16,
high_res_fix=[{'timestep': 600,
'scale_factor': 0.5,
'block_num': 1}])
>>> pipe = pipe.to("cuda")
>>> prompt = "a photo of an astronaut riding a horse on mars"
>>> image = pipe(prompt, height=1000, width=1600).images[0]
```
"""
class StableDiffusionHighResFixPipeline(StableDiffusionPipeline):
r"""
Pipeline for text-to-image generation using Stable Diffusion with Kohya fix for high resolution generation.
This model inherits from [`StableDiffusionPipeline`]. Check the superclass documentation for the generic methods.
The pipeline also inherits the following loading methods:
- [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] for loading textual inversion embeddings
- [`~loaders.StableDiffusionLoraLoaderMixin.load_lora_weights`] for loading LoRA weights
- [`~loaders.StableDiffusionLoraLoaderMixin.save_lora_weights`] for saving LoRA weights
- [`~loaders.FromSingleFileMixin.from_single_file`] for loading `.ckpt` files
- [`~loaders.IPAdapterMixin.load_ip_adapter`] for loading IP Adapters
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.
text_encoder ([`~transformers.CLIPTextModel`]):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
tokenizer ([`~transformers.CLIPTokenizer`]):
A `CLIPTokenizer` to tokenize text.
unet ([`UNet2DConditionModel`]):
A `UNet2DConditionModel` to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
safety_checker ([`StableDiffusionSafetyChecker`]):
Classification module that estimates whether generated images could be considered offensive or harmful.
Please refer to the [model card](https://huggingface.co/runwayml/stable-diffusion-v1-5) for more details
about a model's potential harms.
feature_extractor ([`~transformers.CLIPImageProcessor`]):
A `CLIPImageProcessor` to extract features from generated images; used as inputs to the `safety_checker`.
high_res_fix (`List[Dict]`, *optional*, defaults to `[{'timestep': 600, 'scale_factor': 0.5, 'block_num': 1}]`):
Enables Kohya fix for high resolution generation. The activation maps are scaled based on the scale_factor up to the timestep at specified block_num.
"""
model_cpu_offload_seq = "text_encoder->image_encoder->unet->vae"
_optional_components = ["safety_checker", "feature_extractor", "image_encoder"]
_exclude_from_cpu_offload = ["safety_checker"]
_callback_tensor_inputs = ["latents", "prompt_embeds", "negative_prompt_embeds"]
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
tokenizer: CLIPTokenizer,
unet: UNet2DConditionModel,
scheduler: KarrasDiffusionSchedulers,
safety_checker: StableDiffusionSafetyChecker,
feature_extractor: CLIPImageProcessor,
image_encoder: CLIPVisionModelWithProjection = None,
requires_safety_checker: bool = True,
high_res_fix: List[Dict] = [{"timestep": 600, "scale_factor": 0.5, "block_num": 1}],
):
super().__init__(
vae=vae,
text_encoder=text_encoder,
tokenizer=tokenizer,
unet=unet,
scheduler=scheduler,
safety_checker=safety_checker,
feature_extractor=feature_extractor,
image_encoder=image_encoder,
requires_safety_checker=requires_safety_checker,
)
unet = UNet2DConditionModelHighResFix.from_unet(unet=unet, high_res_fix=high_res_fix)
self.register_modules(
vae=vae,
text_encoder=text_encoder,
tokenizer=tokenizer,
unet=unet,
scheduler=scheduler,
safety_checker=safety_checker,
feature_extractor=feature_extractor,
image_encoder=image_encoder,
)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor)
self.register_to_config(requires_safety_checker=requires_safety_checker)
|
diffusers/examples/community/kohya_hires_fix.py/0
|
{
"file_path": "diffusers/examples/community/kohya_hires_fix.py",
"repo_id": "diffusers",
"token_count": 10583
}
| 109
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Note:
# This pipeline relies on a "hack" discovered by the community that allows
# the generation of videos given an input image with AnimateDiff. It works
# by creating a copy of the image `num_frames` times and progressively adding
# more noise to the image based on the strength and latent interpolation method.
import inspect
from types import FunctionType
from typing import Any, Callable, Dict, List, Optional, Union
import numpy as np
import torch
from transformers import CLIPImageProcessor, CLIPTextModel, CLIPTokenizer, CLIPVisionModelWithProjection
from diffusers.image_processor import PipelineImageInput, VaeImageProcessor
from diffusers.loaders import IPAdapterMixin, StableDiffusionLoraLoaderMixin, TextualInversionLoaderMixin
from diffusers.models import AutoencoderKL, ImageProjection, UNet2DConditionModel, UNetMotionModel
from diffusers.models.lora import adjust_lora_scale_text_encoder
from diffusers.models.unet_motion_model import MotionAdapter
from diffusers.pipelines.animatediff.pipeline_output import AnimateDiffPipelineOutput
from diffusers.pipelines.pipeline_utils import DiffusionPipeline, StableDiffusionMixin
from diffusers.schedulers import (
DDIMScheduler,
DPMSolverMultistepScheduler,
EulerAncestralDiscreteScheduler,
EulerDiscreteScheduler,
LMSDiscreteScheduler,
PNDMScheduler,
)
from diffusers.utils import USE_PEFT_BACKEND, logging, scale_lora_layers, unscale_lora_layers
from diffusers.utils.torch_utils import randn_tensor
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import torch
>>> from diffusers import MotionAdapter, DiffusionPipeline, DDIMScheduler
>>> from diffusers.utils import export_to_gif, load_image
>>> model_id = "SG161222/Realistic_Vision_V5.1_noVAE"
>>> adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-2")
>>> pipe = DiffusionPipeline.from_pretrained("SG161222/Realistic_Vision_V5.1_noVAE", motion_adapter=adapter, custom_pipeline="pipeline_animatediff_img2video").to("cuda")
>>> pipe.scheduler = pipe.scheduler = DDIMScheduler.from_pretrained(model_id, subfolder="scheduler", clip_sample=False, timestep_spacing="linspace", beta_schedule="linear", steps_offset=1)
>>> image = load_image("snail.png")
>>> output = pipe(image=image, prompt="A snail moving on the ground", strength=0.8, latent_interpolation_method="slerp")
>>> frames = output.frames[0]
>>> export_to_gif(frames, "animation.gif")
```
"""
def lerp(
v0: torch.Tensor,
v1: torch.Tensor,
t: Union[float, torch.Tensor],
) -> torch.Tensor:
r"""
Linear Interpolation between two tensors.
Args:
v0 (`torch.Tensor`): First tensor.
v1 (`torch.Tensor`): Second tensor.
t: (`float` or `torch.Tensor`): Interpolation factor.
"""
t_is_float = False
input_device = v0.device
v0 = v0.cpu().numpy()
v1 = v1.cpu().numpy()
if isinstance(t, torch.Tensor):
t = t.cpu().numpy()
else:
t_is_float = True
t = np.array([t], dtype=v0.dtype)
t = t[..., None]
v0 = v0[None, ...]
v1 = v1[None, ...]
v2 = (1 - t) * v0 + t * v1
if t_is_float and v0.ndim > 1:
assert v2.shape[0] == 1
v2 = np.squeeze(v2, axis=0)
v2 = torch.from_numpy(v2).to(input_device)
return v2
def slerp(
v0: torch.Tensor,
v1: torch.Tensor,
t: Union[float, torch.Tensor],
DOT_THRESHOLD: float = 0.9995,
) -> torch.Tensor:
r"""
Spherical Linear Interpolation between two tensors.
Args:
v0 (`torch.Tensor`): First tensor.
v1 (`torch.Tensor`): Second tensor.
t: (`float` or `torch.Tensor`): Interpolation factor.
DOT_THRESHOLD (`float`):
Dot product threshold exceeding which linear interpolation will be used
because input tensors are close to parallel.
"""
t_is_float = False
input_device = v0.device
v0 = v0.cpu().numpy()
v1 = v1.cpu().numpy()
if isinstance(t, torch.Tensor):
t = t.cpu().numpy()
else:
t_is_float = True
t = np.array([t], dtype=v0.dtype)
dot = np.sum(v0 * v1 / (np.linalg.norm(v0) * np.linalg.norm(v1)))
if np.abs(dot) > DOT_THRESHOLD:
# v0 and v1 are close to parallel, so use linear interpolation instead
v2 = lerp(v0, v1, t)
else:
theta_0 = np.arccos(dot)
sin_theta_0 = np.sin(theta_0)
theta_t = theta_0 * t
sin_theta_t = np.sin(theta_t)
s0 = np.sin(theta_0 - theta_t) / sin_theta_0
s1 = sin_theta_t / sin_theta_0
s0 = s0[..., None]
s1 = s1[..., None]
v0 = v0[None, ...]
v1 = v1[None, ...]
v2 = s0 * v0 + s1 * v1
if t_is_float and v0.ndim > 1:
assert v2.shape[0] == 1
v2 = np.squeeze(v2, axis=0)
v2 = torch.from_numpy(v2).to(input_device)
return v2
# Copied from diffusers.pipelines.animatediff.pipeline_animatediff.tensor2vid
def tensor2vid(video: torch.Tensor, processor, output_type="np"):
batch_size, channels, num_frames, height, width = video.shape
outputs = []
for batch_idx in range(batch_size):
batch_vid = video[batch_idx].permute(1, 0, 2, 3)
batch_output = processor.postprocess(batch_vid, output_type)
outputs.append(batch_output)
if output_type == "np":
outputs = np.stack(outputs)
elif output_type == "pt":
outputs = torch.stack(outputs)
elif not output_type == "pil":
raise ValueError(f"{output_type} does not exist. Please choose one of ['np', 'pt', 'pil']")
return outputs
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion_img2img.retrieve_latents
def retrieve_latents(
encoder_output: torch.Tensor, generator: Optional[torch.Generator] = None, sample_mode: str = "sample"
):
if hasattr(encoder_output, "latent_dist") and sample_mode == "sample":
return encoder_output.latent_dist.sample(generator)
elif hasattr(encoder_output, "latent_dist") and sample_mode == "argmax":
return encoder_output.latent_dist.mode()
elif hasattr(encoder_output, "latents"):
return encoder_output.latents
else:
raise AttributeError("Could not access latents of provided encoder_output")
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.retrieve_timesteps
def retrieve_timesteps(
scheduler,
num_inference_steps: Optional[int] = None,
device: Optional[Union[str, torch.device]] = None,
timesteps: Optional[List[int]] = None,
**kwargs,
):
"""
Calls the scheduler's `set_timesteps` method and retrieves timesteps from the scheduler after the call. Handles
custom timesteps. Any kwargs will be supplied to `scheduler.set_timesteps`.
Args:
scheduler (`SchedulerMixin`):
The scheduler to get timesteps from.
num_inference_steps (`int`):
The number of diffusion steps used when generating samples with a pre-trained model. If used,
`timesteps` must be `None`.
device (`str` or `torch.device`, *optional*):
The device to which the timesteps should be moved to. If `None`, the timesteps are not moved.
timesteps (`List[int]`, *optional*):
Custom timesteps used to support arbitrary spacing between timesteps. If `None`, then the default
timestep spacing strategy of the scheduler is used. If `timesteps` is passed, `num_inference_steps`
must be `None`.
Returns:
`Tuple[torch.Tensor, int]`: A tuple where the first element is the timestep schedule from the scheduler and the
second element is the number of inference steps.
"""
if timesteps is not None:
accepts_timesteps = "timesteps" in set(inspect.signature(scheduler.set_timesteps).parameters.keys())
if not accepts_timesteps:
raise ValueError(
f"The current scheduler class {scheduler.__class__}'s `set_timesteps` does not support custom"
f" timestep schedules. Please check whether you are using the correct scheduler."
)
scheduler.set_timesteps(timesteps=timesteps, device=device, **kwargs)
timesteps = scheduler.timesteps
num_inference_steps = len(timesteps)
else:
scheduler.set_timesteps(num_inference_steps, device=device, **kwargs)
timesteps = scheduler.timesteps
return timesteps, num_inference_steps
class AnimateDiffImgToVideoPipeline(
DiffusionPipeline,
StableDiffusionMixin,
TextualInversionLoaderMixin,
IPAdapterMixin,
StableDiffusionLoraLoaderMixin,
):
r"""
Pipeline for image-to-video generation.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
The pipeline also inherits the following loading methods:
- [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] for loading textual inversion embeddings
- [`~loaders.StableDiffusionLoraLoaderMixin.load_lora_weights`] for loading LoRA weights
- [`~loaders.StableDiffusionLoraLoaderMixin.save_lora_weights`] for saving LoRA weights
- [`~loaders.IPAdapterMixin.load_ip_adapter`] for loading IP Adapters
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) Model to encode and decode images to and from latent representations.
text_encoder ([`CLIPTextModel`]):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
tokenizer (`CLIPTokenizer`):
A [`~transformers.CLIPTokenizer`] to tokenize text.
unet ([`UNet2DConditionModel`]):
A [`UNet2DConditionModel`] used to create a UNetMotionModel to denoise the encoded video latents.
motion_adapter ([`MotionAdapter`]):
A [`MotionAdapter`] to be used in combination with `unet` to denoise the encoded video latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
"""
model_cpu_offload_seq = "text_encoder->image_encoder->unet->vae"
_optional_components = ["feature_extractor", "image_encoder"]
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
tokenizer: CLIPTokenizer,
unet: UNet2DConditionModel,
motion_adapter: MotionAdapter,
scheduler: Union[
DDIMScheduler,
PNDMScheduler,
LMSDiscreteScheduler,
EulerDiscreteScheduler,
EulerAncestralDiscreteScheduler,
DPMSolverMultistepScheduler,
],
feature_extractor: CLIPImageProcessor = None,
image_encoder: CLIPVisionModelWithProjection = None,
):
super().__init__()
unet = UNetMotionModel.from_unet2d(unet, motion_adapter)
self.register_modules(
vae=vae,
text_encoder=text_encoder,
tokenizer=tokenizer,
unet=unet,
motion_adapter=motion_adapter,
scheduler=scheduler,
feature_extractor=feature_extractor,
image_encoder=image_encoder,
)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.encode_prompt with num_images_per_prompt -> num_videos_per_prompt
def encode_prompt(
self,
prompt,
device,
num_images_per_prompt,
do_classifier_free_guidance,
negative_prompt=None,
prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
lora_scale: Optional[float] = None,
clip_skip: Optional[int] = None,
):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `List[str]`, *optional*):
prompt to be encoded
device: (`torch.device`):
torch device
num_images_per_prompt (`int`):
number of images that should be generated per prompt
do_classifier_free_guidance (`bool`):
whether to use classifier free guidance or not
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
lora_scale (`float`, *optional*):
A LoRA scale that will be applied to all LoRA layers of the text encoder if LoRA layers are loaded.
clip_skip (`int`, *optional*):
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.
"""
# set lora scale so that monkey patched LoRA
# function of text encoder can correctly access it
if lora_scale is not None and isinstance(self, StableDiffusionLoraLoaderMixin):
self._lora_scale = lora_scale
# dynamically adjust the LoRA scale
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder, lora_scale)
else:
scale_lora_layers(self.text_encoder, lora_scale)
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
if prompt_embeds is None:
# textual inversion: procecss multi-vector tokens if necessary
if isinstance(self, TextualInversionLoaderMixin):
prompt = self.maybe_convert_prompt(prompt, self.tokenizer)
text_inputs = self.tokenizer(
prompt,
padding="max_length",
max_length=self.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
untruncated_ids = self.tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = self.tokenizer.batch_decode(
untruncated_ids[:, self.tokenizer.model_max_length - 1 : -1]
)
logger.warning(
"The following part of your input was truncated because CLIP can only handle sequences up to"
f" {self.tokenizer.model_max_length} tokens: {removed_text}"
)
if hasattr(self.text_encoder.config, "use_attention_mask") and self.text_encoder.config.use_attention_mask:
attention_mask = text_inputs.attention_mask.to(device)
else:
attention_mask = None
if clip_skip is None:
prompt_embeds = self.text_encoder(text_input_ids.to(device), attention_mask=attention_mask)
prompt_embeds = prompt_embeds[0]
else:
prompt_embeds = self.text_encoder(
text_input_ids.to(device), attention_mask=attention_mask, output_hidden_states=True
)
# Access the `hidden_states` first, that contains a tuple of
# all the hidden states from the encoder layers. Then index into
# the tuple to access the hidden states from the desired layer.
prompt_embeds = prompt_embeds[-1][-(clip_skip + 1)]
# We also need to apply the final LayerNorm here to not mess with the
# representations. The `last_hidden_states` that we typically use for
# obtaining the final prompt representations passes through the LayerNorm
# layer.
prompt_embeds = self.text_encoder.text_model.final_layer_norm(prompt_embeds)
if self.text_encoder is not None:
prompt_embeds_dtype = self.text_encoder.dtype
elif self.unet is not None:
prompt_embeds_dtype = self.unet.dtype
else:
prompt_embeds_dtype = prompt_embeds.dtype
prompt_embeds = prompt_embeds.to(dtype=prompt_embeds_dtype, device=device)
bs_embed, seq_len, _ = prompt_embeds.shape
# duplicate text embeddings for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1)
prompt_embeds = prompt_embeds.view(bs_embed * num_images_per_prompt, seq_len, -1)
# get unconditional embeddings for classifier free guidance
if do_classifier_free_guidance and negative_prompt_embeds is None:
uncond_tokens: List[str]
if negative_prompt is None:
uncond_tokens = [""] * batch_size
elif prompt is not None and type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
f" {type(prompt)}."
)
elif isinstance(negative_prompt, str):
uncond_tokens = [negative_prompt]
elif batch_size != len(negative_prompt):
raise ValueError(
f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:"
f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches"
" the batch size of `prompt`."
)
else:
uncond_tokens = negative_prompt
# textual inversion: procecss multi-vector tokens if necessary
if isinstance(self, TextualInversionLoaderMixin):
uncond_tokens = self.maybe_convert_prompt(uncond_tokens, self.tokenizer)
max_length = prompt_embeds.shape[1]
uncond_input = self.tokenizer(
uncond_tokens,
padding="max_length",
max_length=max_length,
truncation=True,
return_tensors="pt",
)
if hasattr(self.text_encoder.config, "use_attention_mask") and self.text_encoder.config.use_attention_mask:
attention_mask = uncond_input.attention_mask.to(device)
else:
attention_mask = None
negative_prompt_embeds = self.text_encoder(
uncond_input.input_ids.to(device),
attention_mask=attention_mask,
)
negative_prompt_embeds = negative_prompt_embeds[0]
if do_classifier_free_guidance:
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = negative_prompt_embeds.shape[1]
negative_prompt_embeds = negative_prompt_embeds.to(dtype=prompt_embeds_dtype, device=device)
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt, 1)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len, -1)
if isinstance(self, StableDiffusionLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder, lora_scale)
return prompt_embeds, negative_prompt_embeds
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.encode_image
def encode_image(self, image, device, num_images_per_prompt, output_hidden_states=None):
dtype = next(self.image_encoder.parameters()).dtype
if not isinstance(image, torch.Tensor):
image = self.feature_extractor(image, return_tensors="pt").pixel_values
image = image.to(device=device, dtype=dtype)
if output_hidden_states:
image_enc_hidden_states = self.image_encoder(image, output_hidden_states=True).hidden_states[-2]
image_enc_hidden_states = image_enc_hidden_states.repeat_interleave(num_images_per_prompt, dim=0)
uncond_image_enc_hidden_states = self.image_encoder(
torch.zeros_like(image), output_hidden_states=True
).hidden_states[-2]
uncond_image_enc_hidden_states = uncond_image_enc_hidden_states.repeat_interleave(
num_images_per_prompt, dim=0
)
return image_enc_hidden_states, uncond_image_enc_hidden_states
else:
image_embeds = self.image_encoder(image).image_embeds
image_embeds = image_embeds.repeat_interleave(num_images_per_prompt, dim=0)
uncond_image_embeds = torch.zeros_like(image_embeds)
return image_embeds, uncond_image_embeds
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_ip_adapter_image_embeds
def prepare_ip_adapter_image_embeds(
self, ip_adapter_image, ip_adapter_image_embeds, device, num_images_per_prompt
):
if ip_adapter_image_embeds is None:
if not isinstance(ip_adapter_image, list):
ip_adapter_image = [ip_adapter_image]
if len(ip_adapter_image) != len(self.unet.encoder_hid_proj.image_projection_layers):
raise ValueError(
f"`ip_adapter_image` must have same length as the number of IP Adapters. Got {len(ip_adapter_image)} images and {len(self.unet.encoder_hid_proj.image_projection_layers)} IP Adapters."
)
image_embeds = []
for single_ip_adapter_image, image_proj_layer in zip(
ip_adapter_image, self.unet.encoder_hid_proj.image_projection_layers
):
output_hidden_state = not isinstance(image_proj_layer, ImageProjection)
single_image_embeds, single_negative_image_embeds = self.encode_image(
single_ip_adapter_image, device, 1, output_hidden_state
)
single_image_embeds = torch.stack([single_image_embeds] * num_images_per_prompt, dim=0)
single_negative_image_embeds = torch.stack(
[single_negative_image_embeds] * num_images_per_prompt, dim=0
)
if self.do_classifier_free_guidance:
single_image_embeds = torch.cat([single_negative_image_embeds, single_image_embeds])
single_image_embeds = single_image_embeds.to(device)
image_embeds.append(single_image_embeds)
else:
image_embeds = ip_adapter_image_embeds
return image_embeds
# Copied from diffusers.pipelines.text_to_video_synthesis/pipeline_text_to_video_synth.TextToVideoSDPipeline.decode_latents
def decode_latents(self, latents):
latents = 1 / self.vae.config.scaling_factor * latents
batch_size, channels, num_frames, height, width = latents.shape
latents = latents.permute(0, 2, 1, 3, 4).reshape(batch_size * num_frames, channels, height, width)
image = self.vae.decode(latents).sample
video = (
image[None, :]
.reshape(
(
batch_size,
num_frames,
-1,
)
+ image.shape[2:]
)
.permute(0, 2, 1, 3, 4)
)
# we always cast to float32 as this does not cause significant overhead and is compatible with bfloat16
video = video.float()
return video
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_extra_step_kwargs
def prepare_extra_step_kwargs(self, generator, eta):
# prepare extra kwargs for the scheduler step, since not all schedulers have the same signature
# eta (η) is only used with the DDIMScheduler, it will be ignored for other schedulers.
# eta corresponds to η in DDIM paper: https://arxiv.org/abs/2010.02502
# and should be between [0, 1]
accepts_eta = "eta" in set(inspect.signature(self.scheduler.step).parameters.keys())
extra_step_kwargs = {}
if accepts_eta:
extra_step_kwargs["eta"] = eta
# check if the scheduler accepts generator
accepts_generator = "generator" in set(inspect.signature(self.scheduler.step).parameters.keys())
if accepts_generator:
extra_step_kwargs["generator"] = generator
return extra_step_kwargs
def check_inputs(
self,
prompt,
height,
width,
callback_steps,
negative_prompt=None,
prompt_embeds=None,
negative_prompt_embeds=None,
callback_on_step_end_tensor_inputs=None,
latent_interpolation_method=None,
):
if height % 8 != 0 or width % 8 != 0:
raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.")
if callback_steps is not None and (not isinstance(callback_steps, int) or callback_steps <= 0):
raise ValueError(
f"`callback_steps` has to be a positive integer but is {callback_steps} of type"
f" {type(callback_steps)}."
)
if callback_on_step_end_tensor_inputs is not None and not all(
k in self._callback_tensor_inputs for k in callback_on_step_end_tensor_inputs
):
raise ValueError(
f"`callback_on_step_end_tensor_inputs` has to be in {self._callback_tensor_inputs}, but found {[k for k in callback_on_step_end_tensor_inputs if k not in self._callback_tensor_inputs]}"
)
if prompt is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt is None and prompt_embeds is None:
raise ValueError(
"Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined."
)
elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
if negative_prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
if prompt_embeds is not None and negative_prompt_embeds is not None:
if prompt_embeds.shape != negative_prompt_embeds.shape:
raise ValueError(
"`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
f" {negative_prompt_embeds.shape}."
)
if latent_interpolation_method is not None:
if latent_interpolation_method not in ["lerp", "slerp"] and not isinstance(
latent_interpolation_method, FunctionType
):
raise ValueError(
"`latent_interpolation_method` must be one of `lerp`, `slerp` or a Callable[[torch.Tensor, torch.Tensor, int], torch.Tensor]"
)
def prepare_latents(
self,
image,
strength,
batch_size,
num_channels_latents,
num_frames,
height,
width,
dtype,
device,
generator,
latents=None,
latent_interpolation_method="slerp",
):
shape = (
batch_size,
num_channels_latents,
num_frames,
height // self.vae_scale_factor,
width // self.vae_scale_factor,
)
if latents is None:
image = image.to(device=device, dtype=dtype)
if image.shape[1] == 4:
latents = image
else:
# make sure the VAE is in float32 mode, as it overflows in float16
if self.vae.config.force_upcast:
image = image.float()
self.vae.to(dtype=torch.float32)
if isinstance(generator, list):
if len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
init_latents = [
retrieve_latents(self.vae.encode(image[i : i + 1]), generator=generator[i])
for i in range(batch_size)
]
init_latents = torch.cat(init_latents, dim=0)
else:
init_latents = retrieve_latents(self.vae.encode(image), generator=generator)
if self.vae.config.force_upcast:
self.vae.to(dtype)
init_latents = init_latents.to(dtype)
init_latents = self.vae.config.scaling_factor * init_latents
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
latents = latents * self.scheduler.init_noise_sigma
if latent_interpolation_method == "lerp":
def latent_cls(v0, v1, index):
return lerp(v0, v1, index / num_frames * (1 - strength))
elif latent_interpolation_method == "slerp":
def latent_cls(v0, v1, index):
return slerp(v0, v1, index / num_frames * (1 - strength))
else:
latent_cls = latent_interpolation_method
for i in range(num_frames):
latents[:, :, i, :, :] = latent_cls(latents[:, :, i, :, :], init_latents, i)
else:
if shape != latents.shape:
# [B, C, F, H, W]
raise ValueError(f"`latents` expected to have {shape=}, but found {latents.shape=}")
latents = latents.to(device, dtype=dtype)
return latents
@torch.no_grad()
def __call__(
self,
image: PipelineImageInput,
prompt: Optional[Union[str, List[str]]] = None,
height: Optional[int] = None,
width: Optional[int] = None,
num_frames: int = 16,
num_inference_steps: int = 50,
timesteps: Optional[List[int]] = None,
guidance_scale: float = 7.5,
strength: float = 0.8,
negative_prompt: Optional[Union[str, List[str]]] = None,
num_videos_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
ip_adapter_image: Optional[PipelineImageInput] = None,
ip_adapter_image_embeds: Optional[PipelineImageInput] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.Tensor], None]] = None,
callback_steps: Optional[int] = 1,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
clip_skip: Optional[int] = None,
latent_interpolation_method: Union[str, Callable[[torch.Tensor, torch.Tensor, int], torch.Tensor]] = "slerp",
):
r"""
The call function to the pipeline for generation.
Args:
image (`PipelineImageInput`):
The input image to condition the generation on.
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide image generation. If not defined, you need to pass `prompt_embeds`.
height (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
The height in pixels of the generated video.
width (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
The width in pixels of the generated video.
num_frames (`int`, *optional*, defaults to 16):
The number of video frames that are generated. Defaults to 16 frames which at 8 frames per seconds
amounts to 2 seconds of video.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality videos at the
expense of slower inference.
strength (`float`, *optional*, defaults to 0.8):
Higher strength leads to more differences between original image and generated video.
guidance_scale (`float`, *optional*, defaults to 7.5):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for video
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`. Latents should be of shape
`(batch_size, num_channel, num_frames, height, width)`.
prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs (prompt weighting). If not
provided, text embeddings are generated from the `prompt` input argument.
negative_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
not provided, `negative_prompt_embeds` are generated from the `negative_prompt` input argument.
ip_adapter_image: (`PipelineImageInput`, *optional*):
Optional image input to work with IP Adapters.
ip_adapter_image_embeds (`List[torch.Tensor]`, *optional*):
Pre-generated image embeddings for IP-Adapter. It should be a list of length same as number of IP-adapters.
Each element should be a tensor of shape `(batch_size, num_images, emb_dim)`. It should contain the negative image embedding
if `do_classifier_free_guidance` is set to `True`.
If not provided, embeddings are computed from the `ip_adapter_image` input argument.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated video. Choose between `torch.Tensor`, `PIL.Image` or
`np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`AnimateDiffImgToVideoPipelineOutput`] instead
of a plain tuple.
callback (`Callable`, *optional*):
A function that calls every `callback_steps` steps during inference. The function is called with the
following arguments: `callback(step: int, timestep: int, latents: torch.Tensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function is called. If not specified, the callback is called at
every step.
cross_attention_kwargs (`dict`, *optional*):
A kwargs dictionary that if specified is passed along to the [`AttentionProcessor`] as defined in
[`self.processor`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
clip_skip (`int`, *optional*):
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.
latent_interpolation_method (`str` or `Callable[[torch.Tensor, torch.Tensor, int], torch.Tensor]]`, *optional*):
Must be one of "lerp", "slerp" or a callable that takes in a random noisy latent, image latent and a frame index
as input and returns an initial latent for sampling.
Examples:
Returns:
[`~pipelines.animatediff.pipeline_output.AnimateDiffPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.animatediff.pipeline_output.AnimateDiffPipelineOutput`] is
returned, otherwise a `tuple` is returned where the first element is a list with the generated frames.
"""
# 0. Default height and width to unet
height = height or self.unet.config.sample_size * self.vae_scale_factor
width = width or self.unet.config.sample_size * self.vae_scale_factor
num_videos_per_prompt = 1
# 1. Check inputs. Raise error if not correct
self.check_inputs(
prompt=prompt,
height=height,
width=width,
callback_steps=callback_steps,
negative_prompt=negative_prompt,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
latent_interpolation_method=latent_interpolation_method,
)
# 2. Define call parameters
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
do_classifier_free_guidance = guidance_scale > 1.0
# 3. Encode input prompt
text_encoder_lora_scale = (
cross_attention_kwargs.get("scale", None) if cross_attention_kwargs is not None else None
)
prompt_embeds, negative_prompt_embeds = self.encode_prompt(
prompt,
device,
num_videos_per_prompt,
do_classifier_free_guidance,
negative_prompt,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
lora_scale=text_encoder_lora_scale,
clip_skip=clip_skip,
)
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
if do_classifier_free_guidance:
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds])
if ip_adapter_image is not None:
image_embeds = self.prepare_ip_adapter_image_embeds(
ip_adapter_image, ip_adapter_image_embeds, device, batch_size * num_videos_per_prompt
)
# 4. Preprocess image
image = self.image_processor.preprocess(image, height=height, width=width)
# 5. Prepare timesteps
timesteps, num_inference_steps = retrieve_timesteps(self.scheduler, num_inference_steps, device, timesteps)
# 6. Prepare latent variables
num_channels_latents = self.unet.config.in_channels
latents = self.prepare_latents(
image=image,
strength=strength,
batch_size=batch_size * num_videos_per_prompt,
num_channels_latents=num_channels_latents,
num_frames=num_frames,
height=height,
width=width,
dtype=prompt_embeds.dtype,
device=device,
generator=generator,
latents=latents,
latent_interpolation_method=latent_interpolation_method,
)
# 7. Prepare extra step kwargs. TODO: Logic should ideally just be moved out of the pipeline
extra_step_kwargs = self.prepare_extra_step_kwargs(generator, eta)
# 8. Add image embeds for IP-Adapter
added_cond_kwargs = (
{"image_embeds": image_embeds}
if ip_adapter_image is not None or ip_adapter_image_embeds is not None
else None
)
# 9. Denoising loop
num_warmup_steps = len(timesteps) - num_inference_steps * self.scheduler.order
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
latent_model_input = self.scheduler.scale_model_input(latent_model_input, t)
# predict the noise residual
noise_pred = self.unet(
latent_model_input,
t,
encoder_hidden_states=prompt_embeds,
cross_attention_kwargs=cross_attention_kwargs,
added_cond_kwargs=added_cond_kwargs,
).sample
# perform guidance
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs).prev_sample
# call the callback, if provided
if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0):
progress_bar.update()
if callback is not None and i % callback_steps == 0:
callback(i, t, latents)
if output_type == "latent":
return AnimateDiffPipelineOutput(frames=latents)
# 10. Post-processing
if output_type == "latent":
video = latents
else:
video_tensor = self.decode_latents(latents)
video = tensor2vid(video_tensor, self.image_processor, output_type=output_type)
# 11. Offload all models
self.maybe_free_model_hooks()
if not return_dict:
return (video,)
return AnimateDiffPipelineOutput(frames=video)
|
diffusers/examples/community/pipeline_animatediff_img2video.py/0
|
{
"file_path": "diffusers/examples/community/pipeline_animatediff_img2video.py",
"repo_id": "diffusers",
"token_count": 20603
}
| 110
|
# Inspired by: https://github.com/Mikubill/sd-webui-controlnet/discussions/1236 and https://github.com/Mikubill/sd-webui-controlnet/discussions/1280
from typing import Any, Callable, Dict, List, Optional, Tuple, Union
import numpy as np
import PIL.Image
import torch
from diffusers import StableDiffusionControlNetPipeline
from diffusers.models import ControlNetModel
from diffusers.models.attention import BasicTransformerBlock
from diffusers.models.unets.unet_2d_blocks import CrossAttnDownBlock2D, CrossAttnUpBlock2D, DownBlock2D, UpBlock2D
from diffusers.pipelines.controlnet.multicontrolnet import MultiControlNetModel
from diffusers.pipelines.stable_diffusion import StableDiffusionPipelineOutput
from diffusers.utils import logging
from diffusers.utils.torch_utils import is_compiled_module, randn_tensor
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import cv2
>>> import torch
>>> import numpy as np
>>> from PIL import Image
>>> from diffusers import UniPCMultistepScheduler
>>> from diffusers.utils import load_image
>>> input_image = load_image("https://hf.co/datasets/huggingface/documentation-images/resolve/main/diffusers/input_image_vermeer.png")
>>> # get canny image
>>> image = cv2.Canny(np.array(input_image), 100, 200)
>>> image = image[:, :, None]
>>> image = np.concatenate([image, image, image], axis=2)
>>> canny_image = Image.fromarray(image)
>>> controlnet = ControlNetModel.from_pretrained("lllyasviel/sd-controlnet-canny", torch_dtype=torch.float16)
>>> pipe = StableDiffusionControlNetReferencePipeline.from_pretrained(
"runwayml/stable-diffusion-v1-5",
controlnet=controlnet,
safety_checker=None,
torch_dtype=torch.float16
).to('cuda:0')
>>> pipe.scheduler = UniPCMultistepScheduler.from_config(pipe_controlnet.scheduler.config)
>>> result_img = pipe(ref_image=input_image,
prompt="1girl",
image=canny_image,
num_inference_steps=20,
reference_attn=True,
reference_adain=True).images[0]
>>> result_img.show()
```
"""
def torch_dfs(model: torch.nn.Module):
result = [model]
for child in model.children():
result += torch_dfs(child)
return result
class StableDiffusionControlNetReferencePipeline(StableDiffusionControlNetPipeline):
def prepare_ref_latents(self, refimage, batch_size, dtype, device, generator, do_classifier_free_guidance):
refimage = refimage.to(device=device, dtype=dtype)
# encode the mask image into latents space so we can concatenate it to the latents
if isinstance(generator, list):
ref_image_latents = [
self.vae.encode(refimage[i : i + 1]).latent_dist.sample(generator=generator[i])
for i in range(batch_size)
]
ref_image_latents = torch.cat(ref_image_latents, dim=0)
else:
ref_image_latents = self.vae.encode(refimage).latent_dist.sample(generator=generator)
ref_image_latents = self.vae.config.scaling_factor * ref_image_latents
# duplicate mask and ref_image_latents for each generation per prompt, using mps friendly method
if ref_image_latents.shape[0] < batch_size:
if not batch_size % ref_image_latents.shape[0] == 0:
raise ValueError(
"The passed images and the required batch size don't match. Images are supposed to be duplicated"
f" to a total batch size of {batch_size}, but {ref_image_latents.shape[0]} images were passed."
" Make sure the number of images that you pass is divisible by the total requested batch size."
)
ref_image_latents = ref_image_latents.repeat(batch_size // ref_image_latents.shape[0], 1, 1, 1)
ref_image_latents = torch.cat([ref_image_latents] * 2) if do_classifier_free_guidance else ref_image_latents
# aligning device to prevent device errors when concating it with the latent model input
ref_image_latents = ref_image_latents.to(device=device, dtype=dtype)
return ref_image_latents
@torch.no_grad()
def __call__(
self,
prompt: Union[str, List[str]] = None,
image: Union[
torch.Tensor,
PIL.Image.Image,
np.ndarray,
List[torch.Tensor],
List[PIL.Image.Image],
List[np.ndarray],
] = None,
ref_image: Union[torch.Tensor, PIL.Image.Image] = None,
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 7.5,
negative_prompt: Optional[Union[str, List[str]]] = None,
num_images_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.Tensor], None]] = None,
callback_steps: int = 1,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
controlnet_conditioning_scale: Union[float, List[float]] = 1.0,
guess_mode: bool = False,
attention_auto_machine_weight: float = 1.0,
gn_auto_machine_weight: float = 1.0,
style_fidelity: float = 0.5,
reference_attn: bool = True,
reference_adain: bool = True,
):
r"""
Function invoked when calling the pipeline for generation.
Args:
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide the image generation. If not defined, one has to pass `prompt_embeds`.
instead.
image (`torch.Tensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.Tensor]`, `List[PIL.Image.Image]`, `List[np.ndarray]`,:
`List[List[torch.Tensor]]`, `List[List[np.ndarray]]` or `List[List[PIL.Image.Image]]`):
The ControlNet input condition. ControlNet uses this input condition to generate guidance to Unet. If
the type is specified as `torch.Tensor`, it is passed to ControlNet as is. `PIL.Image.Image` can
also be accepted as an image. The dimensions of the output image defaults to `image`'s dimensions. If
height and/or width are passed, `image` is resized according to them. If multiple ControlNets are
specified in init, images must be passed as a list such that each element of the list can be correctly
batched for input to a single controlnet.
ref_image (`torch.Tensor`, `PIL.Image.Image`):
The Reference Control input condition. Reference Control uses this input condition to generate guidance to Unet. If
the type is specified as `torch.Tensor`, it is passed to Reference Control as is. `PIL.Image.Image` can
also be accepted as an image.
height (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor):
The height in pixels of the generated image.
width (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor):
The width in pixels of the generated image.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 7.5):
Guidance scale as defined in [Classifier-Free Diffusion Guidance](https://arxiv.org/abs/2207.12598).
`guidance_scale` is defined as `w` of equation 2. of [Imagen
Paper](https://arxiv.org/pdf/2205.11487.pdf). Guidance scale is enabled by setting `guidance_scale >
1`. Higher guidance scale encourages to generate images that are closely linked to the text `prompt`,
usually at the expense of lower image quality.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) in the DDIM paper: https://arxiv.org/abs/2010.02502. Only applies to
[`schedulers.DDIMScheduler`], will be ignored for others.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
One or a list of [torch generator(s)](https://pytorch.org/docs/stable/generated/torch.Generator.html)
to make generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor will ge generated by sampling using the supplied random `generator`.
prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generate image. Choose between
[PIL](https://pillow.readthedocs.io/en/stable/): `PIL.Image.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
callback (`Callable`, *optional*):
A function that will be called every `callback_steps` steps during inference. The function will be
called with the following arguments: `callback(step: int, timestep: int, latents: torch.Tensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function will be called. If not specified, the callback will be
called at every step.
cross_attention_kwargs (`dict`, *optional*):
A kwargs dictionary that if specified is passed along to the `AttentionProcessor` as defined under
`self.processor` in
[diffusers.models.attention_processor](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
controlnet_conditioning_scale (`float` or `List[float]`, *optional*, defaults to 1.0):
The outputs of the controlnet are multiplied by `controlnet_conditioning_scale` before they are added
to the residual in the original unet. If multiple ControlNets are specified in init, you can set the
corresponding scale as a list.
guess_mode (`bool`, *optional*, defaults to `False`):
In this mode, the ControlNet encoder will try best to recognize the content of the input image even if
you remove all prompts. The `guidance_scale` between 3.0 and 5.0 is recommended.
attention_auto_machine_weight (`float`):
Weight of using reference query for self attention's context.
If attention_auto_machine_weight=1.0, use reference query for all self attention's context.
gn_auto_machine_weight (`float`):
Weight of using reference adain. If gn_auto_machine_weight=2.0, use all reference adain plugins.
style_fidelity (`float`):
style fidelity of ref_uncond_xt. If style_fidelity=1.0, control more important,
elif style_fidelity=0.0, prompt more important, else balanced.
reference_attn (`bool`):
Whether to use reference query for self attention's context.
reference_adain (`bool`):
Whether to use reference adain.
Examples:
Returns:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] or `tuple`:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] if `return_dict` is True, otherwise a `tuple.
When returning a tuple, the first element is a list with the generated images, and the second element is a
list of `bool`s denoting whether the corresponding generated image likely represents "not-safe-for-work"
(nsfw) content, according to the `safety_checker`.
"""
assert reference_attn or reference_adain, "`reference_attn` or `reference_adain` must be True."
# 1. Check inputs. Raise error if not correct
self.check_inputs(
prompt,
image,
callback_steps,
negative_prompt,
prompt_embeds,
negative_prompt_embeds,
controlnet_conditioning_scale,
)
# 2. Define call parameters
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
do_classifier_free_guidance = guidance_scale > 1.0
controlnet = self.controlnet._orig_mod if is_compiled_module(self.controlnet) else self.controlnet
if isinstance(controlnet, MultiControlNetModel) and isinstance(controlnet_conditioning_scale, float):
controlnet_conditioning_scale = [controlnet_conditioning_scale] * len(controlnet.nets)
global_pool_conditions = (
controlnet.config.global_pool_conditions
if isinstance(controlnet, ControlNetModel)
else controlnet.nets[0].config.global_pool_conditions
)
guess_mode = guess_mode or global_pool_conditions
# 3. Encode input prompt
text_encoder_lora_scale = (
cross_attention_kwargs.get("scale", None) if cross_attention_kwargs is not None else None
)
prompt_embeds = self._encode_prompt(
prompt,
device,
num_images_per_prompt,
do_classifier_free_guidance,
negative_prompt,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
lora_scale=text_encoder_lora_scale,
)
# 4. Prepare image
if isinstance(controlnet, ControlNetModel):
image = self.prepare_image(
image=image,
width=width,
height=height,
batch_size=batch_size * num_images_per_prompt,
num_images_per_prompt=num_images_per_prompt,
device=device,
dtype=controlnet.dtype,
do_classifier_free_guidance=do_classifier_free_guidance,
guess_mode=guess_mode,
)
height, width = image.shape[-2:]
elif isinstance(controlnet, MultiControlNetModel):
images = []
for image_ in image:
image_ = self.prepare_image(
image=image_,
width=width,
height=height,
batch_size=batch_size * num_images_per_prompt,
num_images_per_prompt=num_images_per_prompt,
device=device,
dtype=controlnet.dtype,
do_classifier_free_guidance=do_classifier_free_guidance,
guess_mode=guess_mode,
)
images.append(image_)
image = images
height, width = image[0].shape[-2:]
else:
assert False
# 5. Preprocess reference image
ref_image = self.prepare_image(
image=ref_image,
width=width,
height=height,
batch_size=batch_size * num_images_per_prompt,
num_images_per_prompt=num_images_per_prompt,
device=device,
dtype=prompt_embeds.dtype,
)
# 6. Prepare timesteps
self.scheduler.set_timesteps(num_inference_steps, device=device)
timesteps = self.scheduler.timesteps
# 7. Prepare latent variables
num_channels_latents = self.unet.config.in_channels
latents = self.prepare_latents(
batch_size * num_images_per_prompt,
num_channels_latents,
height,
width,
prompt_embeds.dtype,
device,
generator,
latents,
)
# 8. Prepare reference latent variables
ref_image_latents = self.prepare_ref_latents(
ref_image,
batch_size * num_images_per_prompt,
prompt_embeds.dtype,
device,
generator,
do_classifier_free_guidance,
)
# 9. Prepare extra step kwargs. TODO: Logic should ideally just be moved out of the pipeline
extra_step_kwargs = self.prepare_extra_step_kwargs(generator, eta)
# 9. Modify self attention and group norm
MODE = "write"
uc_mask = (
torch.Tensor([1] * batch_size * num_images_per_prompt + [0] * batch_size * num_images_per_prompt)
.type_as(ref_image_latents)
.bool()
)
def hacked_basic_transformer_inner_forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
encoder_hidden_states: Optional[torch.Tensor] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
timestep: Optional[torch.LongTensor] = None,
cross_attention_kwargs: Dict[str, Any] = None,
class_labels: Optional[torch.LongTensor] = None,
):
if self.use_ada_layer_norm:
norm_hidden_states = self.norm1(hidden_states, timestep)
elif self.use_ada_layer_norm_zero:
norm_hidden_states, gate_msa, shift_mlp, scale_mlp, gate_mlp = self.norm1(
hidden_states, timestep, class_labels, hidden_dtype=hidden_states.dtype
)
else:
norm_hidden_states = self.norm1(hidden_states)
# 1. Self-Attention
cross_attention_kwargs = cross_attention_kwargs if cross_attention_kwargs is not None else {}
if self.only_cross_attention:
attn_output = self.attn1(
norm_hidden_states,
encoder_hidden_states=encoder_hidden_states if self.only_cross_attention else None,
attention_mask=attention_mask,
**cross_attention_kwargs,
)
else:
if MODE == "write":
self.bank.append(norm_hidden_states.detach().clone())
attn_output = self.attn1(
norm_hidden_states,
encoder_hidden_states=encoder_hidden_states if self.only_cross_attention else None,
attention_mask=attention_mask,
**cross_attention_kwargs,
)
if MODE == "read":
if attention_auto_machine_weight > self.attn_weight:
attn_output_uc = self.attn1(
norm_hidden_states,
encoder_hidden_states=torch.cat([norm_hidden_states] + self.bank, dim=1),
# attention_mask=attention_mask,
**cross_attention_kwargs,
)
attn_output_c = attn_output_uc.clone()
if do_classifier_free_guidance and style_fidelity > 0:
attn_output_c[uc_mask] = self.attn1(
norm_hidden_states[uc_mask],
encoder_hidden_states=norm_hidden_states[uc_mask],
**cross_attention_kwargs,
)
attn_output = style_fidelity * attn_output_c + (1.0 - style_fidelity) * attn_output_uc
self.bank.clear()
else:
attn_output = self.attn1(
norm_hidden_states,
encoder_hidden_states=encoder_hidden_states if self.only_cross_attention else None,
attention_mask=attention_mask,
**cross_attention_kwargs,
)
if self.use_ada_layer_norm_zero:
attn_output = gate_msa.unsqueeze(1) * attn_output
hidden_states = attn_output + hidden_states
if self.attn2 is not None:
norm_hidden_states = (
self.norm2(hidden_states, timestep) if self.use_ada_layer_norm else self.norm2(hidden_states)
)
# 2. Cross-Attention
attn_output = self.attn2(
norm_hidden_states,
encoder_hidden_states=encoder_hidden_states,
attention_mask=encoder_attention_mask,
**cross_attention_kwargs,
)
hidden_states = attn_output + hidden_states
# 3. Feed-forward
norm_hidden_states = self.norm3(hidden_states)
if self.use_ada_layer_norm_zero:
norm_hidden_states = norm_hidden_states * (1 + scale_mlp[:, None]) + shift_mlp[:, None]
ff_output = self.ff(norm_hidden_states)
if self.use_ada_layer_norm_zero:
ff_output = gate_mlp.unsqueeze(1) * ff_output
hidden_states = ff_output + hidden_states
return hidden_states
def hacked_mid_forward(self, *args, **kwargs):
eps = 1e-6
x = self.original_forward(*args, **kwargs)
if MODE == "write":
if gn_auto_machine_weight >= self.gn_weight:
var, mean = torch.var_mean(x, dim=(2, 3), keepdim=True, correction=0)
self.mean_bank.append(mean)
self.var_bank.append(var)
if MODE == "read":
if len(self.mean_bank) > 0 and len(self.var_bank) > 0:
var, mean = torch.var_mean(x, dim=(2, 3), keepdim=True, correction=0)
std = torch.maximum(var, torch.zeros_like(var) + eps) ** 0.5
mean_acc = sum(self.mean_bank) / float(len(self.mean_bank))
var_acc = sum(self.var_bank) / float(len(self.var_bank))
std_acc = torch.maximum(var_acc, torch.zeros_like(var_acc) + eps) ** 0.5
x_uc = (((x - mean) / std) * std_acc) + mean_acc
x_c = x_uc.clone()
if do_classifier_free_guidance and style_fidelity > 0:
x_c[uc_mask] = x[uc_mask]
x = style_fidelity * x_c + (1.0 - style_fidelity) * x_uc
self.mean_bank = []
self.var_bank = []
return x
def hack_CrossAttnDownBlock2D_forward(
self,
hidden_states: torch.Tensor,
temb: Optional[torch.Tensor] = None,
encoder_hidden_states: Optional[torch.Tensor] = None,
attention_mask: Optional[torch.Tensor] = None,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
):
eps = 1e-6
# TODO(Patrick, William) - attention mask is not used
output_states = ()
for i, (resnet, attn) in enumerate(zip(self.resnets, self.attentions)):
hidden_states = resnet(hidden_states, temb)
hidden_states = attn(
hidden_states,
encoder_hidden_states=encoder_hidden_states,
cross_attention_kwargs=cross_attention_kwargs,
attention_mask=attention_mask,
encoder_attention_mask=encoder_attention_mask,
return_dict=False,
)[0]
if MODE == "write":
if gn_auto_machine_weight >= self.gn_weight:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
self.mean_bank.append([mean])
self.var_bank.append([var])
if MODE == "read":
if len(self.mean_bank) > 0 and len(self.var_bank) > 0:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
std = torch.maximum(var, torch.zeros_like(var) + eps) ** 0.5
mean_acc = sum(self.mean_bank[i]) / float(len(self.mean_bank[i]))
var_acc = sum(self.var_bank[i]) / float(len(self.var_bank[i]))
std_acc = torch.maximum(var_acc, torch.zeros_like(var_acc) + eps) ** 0.5
hidden_states_uc = (((hidden_states - mean) / std) * std_acc) + mean_acc
hidden_states_c = hidden_states_uc.clone()
if do_classifier_free_guidance and style_fidelity > 0:
hidden_states_c[uc_mask] = hidden_states[uc_mask]
hidden_states = style_fidelity * hidden_states_c + (1.0 - style_fidelity) * hidden_states_uc
output_states = output_states + (hidden_states,)
if MODE == "read":
self.mean_bank = []
self.var_bank = []
if self.downsamplers is not None:
for downsampler in self.downsamplers:
hidden_states = downsampler(hidden_states)
output_states = output_states + (hidden_states,)
return hidden_states, output_states
def hacked_DownBlock2D_forward(self, hidden_states, temb=None, *args, **kwargs):
eps = 1e-6
output_states = ()
for i, resnet in enumerate(self.resnets):
hidden_states = resnet(hidden_states, temb)
if MODE == "write":
if gn_auto_machine_weight >= self.gn_weight:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
self.mean_bank.append([mean])
self.var_bank.append([var])
if MODE == "read":
if len(self.mean_bank) > 0 and len(self.var_bank) > 0:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
std = torch.maximum(var, torch.zeros_like(var) + eps) ** 0.5
mean_acc = sum(self.mean_bank[i]) / float(len(self.mean_bank[i]))
var_acc = sum(self.var_bank[i]) / float(len(self.var_bank[i]))
std_acc = torch.maximum(var_acc, torch.zeros_like(var_acc) + eps) ** 0.5
hidden_states_uc = (((hidden_states - mean) / std) * std_acc) + mean_acc
hidden_states_c = hidden_states_uc.clone()
if do_classifier_free_guidance and style_fidelity > 0:
hidden_states_c[uc_mask] = hidden_states[uc_mask]
hidden_states = style_fidelity * hidden_states_c + (1.0 - style_fidelity) * hidden_states_uc
output_states = output_states + (hidden_states,)
if MODE == "read":
self.mean_bank = []
self.var_bank = []
if self.downsamplers is not None:
for downsampler in self.downsamplers:
hidden_states = downsampler(hidden_states)
output_states = output_states + (hidden_states,)
return hidden_states, output_states
def hacked_CrossAttnUpBlock2D_forward(
self,
hidden_states: torch.Tensor,
res_hidden_states_tuple: Tuple[torch.Tensor, ...],
temb: Optional[torch.Tensor] = None,
encoder_hidden_states: Optional[torch.Tensor] = None,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
upsample_size: Optional[int] = None,
attention_mask: Optional[torch.Tensor] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
):
eps = 1e-6
# TODO(Patrick, William) - attention mask is not used
for i, (resnet, attn) in enumerate(zip(self.resnets, self.attentions)):
# pop res hidden states
res_hidden_states = res_hidden_states_tuple[-1]
res_hidden_states_tuple = res_hidden_states_tuple[:-1]
hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1)
hidden_states = resnet(hidden_states, temb)
hidden_states = attn(
hidden_states,
encoder_hidden_states=encoder_hidden_states,
cross_attention_kwargs=cross_attention_kwargs,
attention_mask=attention_mask,
encoder_attention_mask=encoder_attention_mask,
return_dict=False,
)[0]
if MODE == "write":
if gn_auto_machine_weight >= self.gn_weight:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
self.mean_bank.append([mean])
self.var_bank.append([var])
if MODE == "read":
if len(self.mean_bank) > 0 and len(self.var_bank) > 0:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
std = torch.maximum(var, torch.zeros_like(var) + eps) ** 0.5
mean_acc = sum(self.mean_bank[i]) / float(len(self.mean_bank[i]))
var_acc = sum(self.var_bank[i]) / float(len(self.var_bank[i]))
std_acc = torch.maximum(var_acc, torch.zeros_like(var_acc) + eps) ** 0.5
hidden_states_uc = (((hidden_states - mean) / std) * std_acc) + mean_acc
hidden_states_c = hidden_states_uc.clone()
if do_classifier_free_guidance and style_fidelity > 0:
hidden_states_c[uc_mask] = hidden_states[uc_mask]
hidden_states = style_fidelity * hidden_states_c + (1.0 - style_fidelity) * hidden_states_uc
if MODE == "read":
self.mean_bank = []
self.var_bank = []
if self.upsamplers is not None:
for upsampler in self.upsamplers:
hidden_states = upsampler(hidden_states, upsample_size)
return hidden_states
def hacked_UpBlock2D_forward(
self, hidden_states, res_hidden_states_tuple, temb=None, upsample_size=None, *args, **kwargs
):
eps = 1e-6
for i, resnet in enumerate(self.resnets):
# pop res hidden states
res_hidden_states = res_hidden_states_tuple[-1]
res_hidden_states_tuple = res_hidden_states_tuple[:-1]
hidden_states = torch.cat([hidden_states, res_hidden_states], dim=1)
hidden_states = resnet(hidden_states, temb)
if MODE == "write":
if gn_auto_machine_weight >= self.gn_weight:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
self.mean_bank.append([mean])
self.var_bank.append([var])
if MODE == "read":
if len(self.mean_bank) > 0 and len(self.var_bank) > 0:
var, mean = torch.var_mean(hidden_states, dim=(2, 3), keepdim=True, correction=0)
std = torch.maximum(var, torch.zeros_like(var) + eps) ** 0.5
mean_acc = sum(self.mean_bank[i]) / float(len(self.mean_bank[i]))
var_acc = sum(self.var_bank[i]) / float(len(self.var_bank[i]))
std_acc = torch.maximum(var_acc, torch.zeros_like(var_acc) + eps) ** 0.5
hidden_states_uc = (((hidden_states - mean) / std) * std_acc) + mean_acc
hidden_states_c = hidden_states_uc.clone()
if do_classifier_free_guidance and style_fidelity > 0:
hidden_states_c[uc_mask] = hidden_states[uc_mask]
hidden_states = style_fidelity * hidden_states_c + (1.0 - style_fidelity) * hidden_states_uc
if MODE == "read":
self.mean_bank = []
self.var_bank = []
if self.upsamplers is not None:
for upsampler in self.upsamplers:
hidden_states = upsampler(hidden_states, upsample_size)
return hidden_states
if reference_attn:
attn_modules = [module for module in torch_dfs(self.unet) if isinstance(module, BasicTransformerBlock)]
attn_modules = sorted(attn_modules, key=lambda x: -x.norm1.normalized_shape[0])
for i, module in enumerate(attn_modules):
module._original_inner_forward = module.forward
module.forward = hacked_basic_transformer_inner_forward.__get__(module, BasicTransformerBlock)
module.bank = []
module.attn_weight = float(i) / float(len(attn_modules))
if reference_adain:
gn_modules = [self.unet.mid_block]
self.unet.mid_block.gn_weight = 0
down_blocks = self.unet.down_blocks
for w, module in enumerate(down_blocks):
module.gn_weight = 1.0 - float(w) / float(len(down_blocks))
gn_modules.append(module)
up_blocks = self.unet.up_blocks
for w, module in enumerate(up_blocks):
module.gn_weight = float(w) / float(len(up_blocks))
gn_modules.append(module)
for i, module in enumerate(gn_modules):
if getattr(module, "original_forward", None) is None:
module.original_forward = module.forward
if i == 0:
# mid_block
module.forward = hacked_mid_forward.__get__(module, torch.nn.Module)
elif isinstance(module, CrossAttnDownBlock2D):
module.forward = hack_CrossAttnDownBlock2D_forward.__get__(module, CrossAttnDownBlock2D)
elif isinstance(module, DownBlock2D):
module.forward = hacked_DownBlock2D_forward.__get__(module, DownBlock2D)
elif isinstance(module, CrossAttnUpBlock2D):
module.forward = hacked_CrossAttnUpBlock2D_forward.__get__(module, CrossAttnUpBlock2D)
elif isinstance(module, UpBlock2D):
module.forward = hacked_UpBlock2D_forward.__get__(module, UpBlock2D)
module.mean_bank = []
module.var_bank = []
module.gn_weight *= 2
# 11. Denoising loop
num_warmup_steps = len(timesteps) - num_inference_steps * self.scheduler.order
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
latent_model_input = self.scheduler.scale_model_input(latent_model_input, t)
# controlnet(s) inference
if guess_mode and do_classifier_free_guidance:
# Infer ControlNet only for the conditional batch.
control_model_input = latents
control_model_input = self.scheduler.scale_model_input(control_model_input, t)
controlnet_prompt_embeds = prompt_embeds.chunk(2)[1]
else:
control_model_input = latent_model_input
controlnet_prompt_embeds = prompt_embeds
down_block_res_samples, mid_block_res_sample = self.controlnet(
control_model_input,
t,
encoder_hidden_states=controlnet_prompt_embeds,
controlnet_cond=image,
conditioning_scale=controlnet_conditioning_scale,
guess_mode=guess_mode,
return_dict=False,
)
if guess_mode and do_classifier_free_guidance:
# Inferred ControlNet only for the conditional batch.
# To apply the output of ControlNet to both the unconditional and conditional batches,
# add 0 to the unconditional batch to keep it unchanged.
down_block_res_samples = [torch.cat([torch.zeros_like(d), d]) for d in down_block_res_samples]
mid_block_res_sample = torch.cat([torch.zeros_like(mid_block_res_sample), mid_block_res_sample])
# ref only part
noise = randn_tensor(
ref_image_latents.shape, generator=generator, device=device, dtype=ref_image_latents.dtype
)
ref_xt = self.scheduler.add_noise(
ref_image_latents,
noise,
t.reshape(
1,
),
)
ref_xt = self.scheduler.scale_model_input(ref_xt, t)
MODE = "write"
self.unet(
ref_xt,
t,
encoder_hidden_states=prompt_embeds,
cross_attention_kwargs=cross_attention_kwargs,
return_dict=False,
)
# predict the noise residual
MODE = "read"
noise_pred = self.unet(
latent_model_input,
t,
encoder_hidden_states=prompt_embeds,
cross_attention_kwargs=cross_attention_kwargs,
down_block_additional_residuals=down_block_res_samples,
mid_block_additional_residual=mid_block_res_sample,
return_dict=False,
)[0]
# perform guidance
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs, return_dict=False)[0]
# call the callback, if provided
if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0):
progress_bar.update()
if callback is not None and i % callback_steps == 0:
step_idx = i // getattr(self.scheduler, "order", 1)
callback(step_idx, t, latents)
# If we do sequential model offloading, let's offload unet and controlnet
# manually for max memory savings
if hasattr(self, "final_offload_hook") and self.final_offload_hook is not None:
self.unet.to("cpu")
self.controlnet.to("cpu")
torch.cuda.empty_cache()
if not output_type == "latent":
image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0]
image, has_nsfw_concept = self.run_safety_checker(image, device, prompt_embeds.dtype)
else:
image = latents
has_nsfw_concept = None
if has_nsfw_concept is None:
do_denormalize = [True] * image.shape[0]
else:
do_denormalize = [not has_nsfw for has_nsfw in has_nsfw_concept]
image = self.image_processor.postprocess(image, output_type=output_type, do_denormalize=do_denormalize)
# Offload last model to CPU
if hasattr(self, "final_offload_hook") and self.final_offload_hook is not None:
self.final_offload_hook.offload()
if not return_dict:
return (image, has_nsfw_concept)
return StableDiffusionPipelineOutput(images=image, nsfw_content_detected=has_nsfw_concept)
|
diffusers/examples/community/stable_diffusion_controlnet_reference.py/0
|
{
"file_path": "diffusers/examples/community/stable_diffusion_controlnet_reference.py",
"repo_id": "diffusers",
"token_count": 21059
}
| 111
|
#!/usr/bin/env python
# coding=utf-8
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
import argparse
import logging
import math
import os
import random
import time
from pathlib import Path
import jax
import jax.numpy as jnp
import numpy as np
import optax
import torch
import torch.utils.checkpoint
import transformers
from datasets import load_dataset, load_from_disk
from flax import jax_utils
from flax.core.frozen_dict import unfreeze
from flax.training import train_state
from flax.training.common_utils import shard
from huggingface_hub import create_repo, upload_folder
from PIL import Image, PngImagePlugin
from torch.utils.data import IterableDataset
from torchvision import transforms
from tqdm.auto import tqdm
from transformers import CLIPTokenizer, FlaxCLIPTextModel, set_seed
from diffusers import (
FlaxAutoencoderKL,
FlaxControlNetModel,
FlaxDDPMScheduler,
FlaxStableDiffusionControlNetPipeline,
FlaxUNet2DConditionModel,
)
from diffusers.utils import check_min_version, is_wandb_available, make_image_grid
from diffusers.utils.hub_utils import load_or_create_model_card, populate_model_card
# To prevent an error that occurs when there are abnormally large compressed data chunk in the png image
# see more https://github.com/python-pillow/Pillow/issues/5610
LARGE_ENOUGH_NUMBER = 100
PngImagePlugin.MAX_TEXT_CHUNK = LARGE_ENOUGH_NUMBER * (1024**2)
if is_wandb_available():
import wandb
# Will error if the minimal version of diffusers is not installed. Remove at your own risks.
check_min_version("0.31.0.dev0")
logger = logging.getLogger(__name__)
def log_validation(pipeline, pipeline_params, controlnet_params, tokenizer, args, rng, weight_dtype):
logger.info("Running validation...")
pipeline_params = pipeline_params.copy()
pipeline_params["controlnet"] = controlnet_params
num_samples = jax.device_count()
prng_seed = jax.random.split(rng, jax.device_count())
if len(args.validation_image) == len(args.validation_prompt):
validation_images = args.validation_image
validation_prompts = args.validation_prompt
elif len(args.validation_image) == 1:
validation_images = args.validation_image * len(args.validation_prompt)
validation_prompts = args.validation_prompt
elif len(args.validation_prompt) == 1:
validation_images = args.validation_image
validation_prompts = args.validation_prompt * len(args.validation_image)
else:
raise ValueError(
"number of `args.validation_image` and `args.validation_prompt` should be checked in `parse_args`"
)
image_logs = []
for validation_prompt, validation_image in zip(validation_prompts, validation_images):
prompts = num_samples * [validation_prompt]
prompt_ids = pipeline.prepare_text_inputs(prompts)
prompt_ids = shard(prompt_ids)
validation_image = Image.open(validation_image).convert("RGB")
processed_image = pipeline.prepare_image_inputs(num_samples * [validation_image])
processed_image = shard(processed_image)
images = pipeline(
prompt_ids=prompt_ids,
image=processed_image,
params=pipeline_params,
prng_seed=prng_seed,
num_inference_steps=50,
jit=True,
).images
images = images.reshape((images.shape[0] * images.shape[1],) + images.shape[-3:])
images = pipeline.numpy_to_pil(images)
image_logs.append(
{"validation_image": validation_image, "images": images, "validation_prompt": validation_prompt}
)
if args.report_to == "wandb":
formatted_images = []
for log in image_logs:
images = log["images"]
validation_prompt = log["validation_prompt"]
validation_image = log["validation_image"]
formatted_images.append(wandb.Image(validation_image, caption="Controlnet conditioning"))
for image in images:
image = wandb.Image(image, caption=validation_prompt)
formatted_images.append(image)
wandb.log({"validation": formatted_images})
else:
logger.warning(f"image logging not implemented for {args.report_to}")
return image_logs
def save_model_card(repo_id: str, image_logs=None, base_model=str, repo_folder=None):
img_str = ""
if image_logs is not None:
for i, log in enumerate(image_logs):
images = log["images"]
validation_prompt = log["validation_prompt"]
validation_image = log["validation_image"]
validation_image.save(os.path.join(repo_folder, "image_control.png"))
img_str += f"prompt: {validation_prompt}\n"
images = [validation_image] + images
make_image_grid(images, 1, len(images)).save(os.path.join(repo_folder, f"images_{i}.png"))
img_str += f"\n"
model_description = f"""
# controlnet- {repo_id}
These are controlnet weights trained on {base_model} with new type of conditioning. You can find some example images in the following. \n
{img_str}
"""
model_card = load_or_create_model_card(
repo_id_or_path=repo_id,
from_training=True,
license="creativeml-openrail-m",
base_model=base_model,
model_description=model_description,
inference=True,
)
tags = [
"stable-diffusion",
"stable-diffusion-diffusers",
"text-to-image",
"diffusers",
"controlnet",
"jax-diffusers-event",
"diffusers-training",
]
model_card = populate_model_card(model_card, tags=tags)
model_card.save(os.path.join(repo_folder, "README.md"))
def parse_args():
parser = argparse.ArgumentParser(description="Simple example of a training script.")
parser.add_argument(
"--pretrained_model_name_or_path",
type=str,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models.",
)
parser.add_argument(
"--controlnet_model_name_or_path",
type=str,
default=None,
help="Path to pretrained controlnet model or model identifier from huggingface.co/models."
" If not specified controlnet weights are initialized from unet.",
)
parser.add_argument(
"--revision",
type=str,
default=None,
help="Revision of pretrained model identifier from huggingface.co/models.",
)
parser.add_argument(
"--from_pt",
action="store_true",
help="Load the pretrained model from a PyTorch checkpoint.",
)
parser.add_argument(
"--controlnet_revision",
type=str,
default=None,
help="Revision of controlnet model identifier from huggingface.co/models.",
)
parser.add_argument(
"--profile_steps",
type=int,
default=0,
help="How many training steps to profile in the beginning.",
)
parser.add_argument(
"--profile_validation",
action="store_true",
help="Whether to profile the (last) validation.",
)
parser.add_argument(
"--profile_memory",
action="store_true",
help="Whether to dump an initial (before training loop) and a final (at program end) memory profile.",
)
parser.add_argument(
"--ccache",
type=str,
default=None,
help="Enables compilation cache.",
)
parser.add_argument(
"--controlnet_from_pt",
action="store_true",
help="Load the controlnet model from a PyTorch checkpoint.",
)
parser.add_argument(
"--tokenizer_name",
type=str,
default=None,
help="Pretrained tokenizer name or path if not the same as model_name",
)
parser.add_argument(
"--output_dir",
type=str,
default="runs/{timestamp}",
help="The output directory where the model predictions and checkpoints will be written. "
"Can contain placeholders: {timestamp}.",
)
parser.add_argument(
"--cache_dir",
type=str,
default=None,
help="The directory where the downloaded models and datasets will be stored.",
)
parser.add_argument("--seed", type=int, default=0, help="A seed for reproducible training.")
parser.add_argument(
"--resolution",
type=int,
default=512,
help=(
"The resolution for input images, all the images in the train/validation dataset will be resized to this"
" resolution"
),
)
parser.add_argument(
"--train_batch_size", type=int, default=1, help="Batch size (per device) for the training dataloader."
)
parser.add_argument("--num_train_epochs", type=int, default=100)
parser.add_argument(
"--max_train_steps",
type=int,
default=None,
help="Total number of training steps to perform.",
)
parser.add_argument(
"--checkpointing_steps",
type=int,
default=5000,
help=("Save a checkpoint of the training state every X updates."),
)
parser.add_argument(
"--learning_rate",
type=float,
default=1e-4,
help="Initial learning rate (after the potential warmup period) to use.",
)
parser.add_argument(
"--scale_lr",
action="store_true",
help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.",
)
parser.add_argument(
"--lr_scheduler",
type=str,
default="constant",
help=(
'The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",'
' "constant", "constant_with_warmup"]'
),
)
parser.add_argument(
"--snr_gamma",
type=float,
default=None,
help="SNR weighting gamma to be used if rebalancing the loss. Recommended value is 5.0. "
"More details here: https://arxiv.org/abs/2303.09556.",
)
parser.add_argument(
"--dataloader_num_workers",
type=int,
default=0,
help=(
"Number of subprocesses to use for data loading. 0 means that the data will be loaded in the main process."
),
)
parser.add_argument("--adam_beta1", type=float, default=0.9, help="The beta1 parameter for the Adam optimizer.")
parser.add_argument("--adam_beta2", type=float, default=0.999, help="The beta2 parameter for the Adam optimizer.")
parser.add_argument("--adam_weight_decay", type=float, default=1e-2, help="Weight decay to use.")
parser.add_argument("--adam_epsilon", type=float, default=1e-08, help="Epsilon value for the Adam optimizer")
parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.")
parser.add_argument("--hub_token", type=str, default=None, help="The token to use to push to the Model Hub.")
parser.add_argument(
"--hub_model_id",
type=str,
default=None,
help="The name of the repository to keep in sync with the local `output_dir`.",
)
parser.add_argument(
"--logging_steps",
type=int,
default=100,
help=("log training metric every X steps to `--report_t`"),
)
parser.add_argument(
"--report_to",
type=str,
default="wandb",
help=('The integration to report the results and logs to. Currently only supported platforms are `"wandb"`'),
)
parser.add_argument(
"--mixed_precision",
type=str,
default="no",
choices=["no", "fp16", "bf16"],
help=(
"Whether to use mixed precision. Choose"
"between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >= 1.10."
"and an Nvidia Ampere GPU."
),
)
parser.add_argument(
"--dataset_name",
type=str,
default=None,
help=(
"The name of the Dataset (from the HuggingFace hub) to train on (could be your own, possibly private,"
" dataset). It can also be a path pointing to a local copy of a dataset in your filesystem,"
" or to a folder containing files that 🤗 Datasets can understand."
),
)
parser.add_argument("--streaming", action="store_true", help="To stream a large dataset from Hub.")
parser.add_argument(
"--dataset_config_name",
type=str,
default=None,
help="The config of the Dataset, leave as None if there's only one config.",
)
parser.add_argument(
"--train_data_dir",
type=str,
default=None,
help=(
"A folder containing the training dataset. By default it will use `load_dataset` method to load a custom dataset from the folder."
"Folder must contain a dataset script as described here https://huggingface.co/docs/datasets/dataset_script) ."
"If `--load_from_disk` flag is passed, it will use `load_from_disk` method instead. Ignored if `dataset_name` is specified."
),
)
parser.add_argument(
"--load_from_disk",
action="store_true",
help=(
"If True, will load a dataset that was previously saved using `save_to_disk` from `--train_data_dir`"
"See more https://huggingface.co/docs/datasets/package_reference/main_classes#datasets.Dataset.load_from_disk"
),
)
parser.add_argument(
"--image_column", type=str, default="image", help="The column of the dataset containing the target image."
)
parser.add_argument(
"--conditioning_image_column",
type=str,
default="conditioning_image",
help="The column of the dataset containing the controlnet conditioning image.",
)
parser.add_argument(
"--caption_column",
type=str,
default="text",
help="The column of the dataset containing a caption or a list of captions.",
)
parser.add_argument(
"--max_train_samples",
type=int,
default=None,
help=(
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set. Needed if `streaming` is set to True."
),
)
parser.add_argument(
"--proportion_empty_prompts",
type=float,
default=0,
help="Proportion of image prompts to be replaced with empty strings. Defaults to 0 (no prompt replacement).",
)
parser.add_argument(
"--validation_prompt",
type=str,
default=None,
nargs="+",
help=(
"A set of prompts evaluated every `--validation_steps` and logged to `--report_to`."
" Provide either a matching number of `--validation_image`s, a single `--validation_image`"
" to be used with all prompts, or a single prompt that will be used with all `--validation_image`s."
),
)
parser.add_argument(
"--validation_image",
type=str,
default=None,
nargs="+",
help=(
"A set of paths to the controlnet conditioning image be evaluated every `--validation_steps`"
" and logged to `--report_to`. Provide either a matching number of `--validation_prompt`s, a"
" a single `--validation_prompt` to be used with all `--validation_image`s, or a single"
" `--validation_image` that will be used with all `--validation_prompt`s."
),
)
parser.add_argument(
"--validation_steps",
type=int,
default=100,
help=(
"Run validation every X steps. Validation consists of running the prompt"
" `args.validation_prompt` and logging the images."
),
)
parser.add_argument("--wandb_entity", type=str, default=None, help=("The wandb entity to use (for teams)."))
parser.add_argument(
"--tracker_project_name",
type=str,
default="train_controlnet_flax",
help=("The `project` argument passed to wandb"),
)
parser.add_argument(
"--gradient_accumulation_steps", type=int, default=1, help="Number of steps to accumulate gradients over"
)
parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
args = parser.parse_args()
args.output_dir = args.output_dir.replace("{timestamp}", time.strftime("%Y%m%d_%H%M%S"))
env_local_rank = int(os.environ.get("LOCAL_RANK", -1))
if env_local_rank != -1 and env_local_rank != args.local_rank:
args.local_rank = env_local_rank
# Sanity checks
if args.dataset_name is None and args.train_data_dir is None:
raise ValueError("Need either a dataset name or a training folder.")
if args.dataset_name is not None and args.train_data_dir is not None:
raise ValueError("Specify only one of `--dataset_name` or `--train_data_dir`")
if args.proportion_empty_prompts < 0 or args.proportion_empty_prompts > 1:
raise ValueError("`--proportion_empty_prompts` must be in the range [0, 1].")
if args.validation_prompt is not None and args.validation_image is None:
raise ValueError("`--validation_image` must be set if `--validation_prompt` is set")
if args.validation_prompt is None and args.validation_image is not None:
raise ValueError("`--validation_prompt` must be set if `--validation_image` is set")
if (
args.validation_image is not None
and args.validation_prompt is not None
and len(args.validation_image) != 1
and len(args.validation_prompt) != 1
and len(args.validation_image) != len(args.validation_prompt)
):
raise ValueError(
"Must provide either 1 `--validation_image`, 1 `--validation_prompt`,"
" or the same number of `--validation_prompt`s and `--validation_image`s"
)
# This idea comes from
# https://github.com/borisdayma/dalle-mini/blob/d2be512d4a6a9cda2d63ba04afc33038f98f705f/src/dalle_mini/data.py#L370
if args.streaming and args.max_train_samples is None:
raise ValueError("You must specify `max_train_samples` when using dataset streaming.")
return args
def make_train_dataset(args, tokenizer, batch_size=None):
# Get the datasets: you can either provide your own training and evaluation files (see below)
# or specify a Dataset from the hub (the dataset will be downloaded automatically from the datasets Hub).
# In distributed training, the load_dataset function guarantees that only one local process can concurrently
# download the dataset.
if args.dataset_name is not None:
# Downloading and loading a dataset from the hub.
dataset = load_dataset(
args.dataset_name,
args.dataset_config_name,
cache_dir=args.cache_dir,
streaming=args.streaming,
)
else:
if args.train_data_dir is not None:
if args.load_from_disk:
dataset = load_from_disk(
args.train_data_dir,
)
else:
dataset = load_dataset(
args.train_data_dir,
cache_dir=args.cache_dir,
)
# See more about loading custom images at
# https://huggingface.co/docs/datasets/v2.0.0/en/dataset_script
# Preprocessing the datasets.
# We need to tokenize inputs and targets.
if isinstance(dataset["train"], IterableDataset):
column_names = next(iter(dataset["train"])).keys()
else:
column_names = dataset["train"].column_names
# 6. Get the column names for input/target.
if args.image_column is None:
image_column = column_names[0]
logger.info(f"image column defaulting to {image_column}")
else:
image_column = args.image_column
if image_column not in column_names:
raise ValueError(
f"`--image_column` value '{args.image_column}' not found in dataset columns. Dataset columns are: {', '.join(column_names)}"
)
if args.caption_column is None:
caption_column = column_names[1]
logger.info(f"caption column defaulting to {caption_column}")
else:
caption_column = args.caption_column
if caption_column not in column_names:
raise ValueError(
f"`--caption_column` value '{args.caption_column}' not found in dataset columns. Dataset columns are: {', '.join(column_names)}"
)
if args.conditioning_image_column is None:
conditioning_image_column = column_names[2]
logger.info(f"conditioning image column defaulting to {caption_column}")
else:
conditioning_image_column = args.conditioning_image_column
if conditioning_image_column not in column_names:
raise ValueError(
f"`--conditioning_image_column` value '{args.conditioning_image_column}' not found in dataset columns. Dataset columns are: {', '.join(column_names)}"
)
def tokenize_captions(examples, is_train=True):
captions = []
for caption in examples[caption_column]:
if random.random() < args.proportion_empty_prompts:
captions.append("")
elif isinstance(caption, str):
captions.append(caption)
elif isinstance(caption, (list, np.ndarray)):
# take a random caption if there are multiple
captions.append(random.choice(caption) if is_train else caption[0])
else:
raise ValueError(
f"Caption column `{caption_column}` should contain either strings or lists of strings."
)
inputs = tokenizer(
captions, max_length=tokenizer.model_max_length, padding="max_length", truncation=True, return_tensors="pt"
)
return inputs.input_ids
image_transforms = transforms.Compose(
[
transforms.Resize(args.resolution, interpolation=transforms.InterpolationMode.BILINEAR),
transforms.CenterCrop(args.resolution),
transforms.ToTensor(),
transforms.Normalize([0.5], [0.5]),
]
)
conditioning_image_transforms = transforms.Compose(
[
transforms.Resize(args.resolution, interpolation=transforms.InterpolationMode.BILINEAR),
transforms.CenterCrop(args.resolution),
transforms.ToTensor(),
]
)
def preprocess_train(examples):
images = [image.convert("RGB") for image in examples[image_column]]
images = [image_transforms(image) for image in images]
conditioning_images = [image.convert("RGB") for image in examples[conditioning_image_column]]
conditioning_images = [conditioning_image_transforms(image) for image in conditioning_images]
examples["pixel_values"] = images
examples["conditioning_pixel_values"] = conditioning_images
examples["input_ids"] = tokenize_captions(examples)
return examples
if jax.process_index() == 0:
if args.max_train_samples is not None:
if args.streaming:
dataset["train"] = dataset["train"].shuffle(seed=args.seed).take(args.max_train_samples)
else:
dataset["train"] = dataset["train"].shuffle(seed=args.seed).select(range(args.max_train_samples))
# Set the training transforms
if args.streaming:
train_dataset = dataset["train"].map(
preprocess_train,
batched=True,
batch_size=batch_size,
remove_columns=list(dataset["train"].features.keys()),
)
else:
train_dataset = dataset["train"].with_transform(preprocess_train)
return train_dataset
def collate_fn(examples):
pixel_values = torch.stack([example["pixel_values"] for example in examples])
pixel_values = pixel_values.to(memory_format=torch.contiguous_format).float()
conditioning_pixel_values = torch.stack([example["conditioning_pixel_values"] for example in examples])
conditioning_pixel_values = conditioning_pixel_values.to(memory_format=torch.contiguous_format).float()
input_ids = torch.stack([example["input_ids"] for example in examples])
batch = {
"pixel_values": pixel_values,
"conditioning_pixel_values": conditioning_pixel_values,
"input_ids": input_ids,
}
batch = {k: v.numpy() for k, v in batch.items()}
return batch
def get_params_to_save(params):
return jax.device_get(jax.tree_util.tree_map(lambda x: x[0], params))
def main():
args = parse_args()
if args.report_to == "wandb" and args.hub_token is not None:
raise ValueError(
"You cannot use both --report_to=wandb and --hub_token due to a security risk of exposing your token."
" Please use `huggingface-cli login` to authenticate with the Hub."
)
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
level=logging.INFO,
)
# Setup logging, we only want one process per machine to log things on the screen.
logger.setLevel(logging.INFO if jax.process_index() == 0 else logging.ERROR)
if jax.process_index() == 0:
transformers.utils.logging.set_verbosity_info()
else:
transformers.utils.logging.set_verbosity_error()
# wandb init
if jax.process_index() == 0 and args.report_to == "wandb":
wandb.init(
entity=args.wandb_entity,
project=args.tracker_project_name,
job_type="train",
config=args,
)
if args.seed is not None:
set_seed(args.seed)
rng = jax.random.PRNGKey(0)
# Handle the repository creation
if jax.process_index() == 0:
if args.output_dir is not None:
os.makedirs(args.output_dir, exist_ok=True)
if args.push_to_hub:
repo_id = create_repo(
repo_id=args.hub_model_id or Path(args.output_dir).name, exist_ok=True, token=args.hub_token
).repo_id
# Load the tokenizer and add the placeholder token as a additional special token
if args.tokenizer_name:
tokenizer = CLIPTokenizer.from_pretrained(args.tokenizer_name)
elif args.pretrained_model_name_or_path:
tokenizer = CLIPTokenizer.from_pretrained(
args.pretrained_model_name_or_path, subfolder="tokenizer", revision=args.revision
)
else:
raise NotImplementedError("No tokenizer specified!")
# Get the datasets: you can either provide your own training and evaluation files (see below)
total_train_batch_size = args.train_batch_size * jax.local_device_count() * args.gradient_accumulation_steps
train_dataset = make_train_dataset(args, tokenizer, batch_size=total_train_batch_size)
train_dataloader = torch.utils.data.DataLoader(
train_dataset,
shuffle=not args.streaming,
collate_fn=collate_fn,
batch_size=total_train_batch_size,
num_workers=args.dataloader_num_workers,
drop_last=True,
)
weight_dtype = jnp.float32
if args.mixed_precision == "fp16":
weight_dtype = jnp.float16
elif args.mixed_precision == "bf16":
weight_dtype = jnp.bfloat16
# Load models and create wrapper for stable diffusion
text_encoder = FlaxCLIPTextModel.from_pretrained(
args.pretrained_model_name_or_path,
subfolder="text_encoder",
dtype=weight_dtype,
revision=args.revision,
from_pt=args.from_pt,
)
vae, vae_params = FlaxAutoencoderKL.from_pretrained(
args.pretrained_model_name_or_path,
revision=args.revision,
subfolder="vae",
dtype=weight_dtype,
from_pt=args.from_pt,
)
unet, unet_params = FlaxUNet2DConditionModel.from_pretrained(
args.pretrained_model_name_or_path,
subfolder="unet",
dtype=weight_dtype,
revision=args.revision,
from_pt=args.from_pt,
)
if args.controlnet_model_name_or_path:
logger.info("Loading existing controlnet weights")
controlnet, controlnet_params = FlaxControlNetModel.from_pretrained(
args.controlnet_model_name_or_path,
revision=args.controlnet_revision,
from_pt=args.controlnet_from_pt,
dtype=jnp.float32,
)
else:
logger.info("Initializing controlnet weights from unet")
rng, rng_params = jax.random.split(rng)
controlnet = FlaxControlNetModel(
in_channels=unet.config.in_channels,
down_block_types=unet.config.down_block_types,
only_cross_attention=unet.config.only_cross_attention,
block_out_channels=unet.config.block_out_channels,
layers_per_block=unet.config.layers_per_block,
attention_head_dim=unet.config.attention_head_dim,
cross_attention_dim=unet.config.cross_attention_dim,
use_linear_projection=unet.config.use_linear_projection,
flip_sin_to_cos=unet.config.flip_sin_to_cos,
freq_shift=unet.config.freq_shift,
)
controlnet_params = controlnet.init_weights(rng=rng_params)
controlnet_params = unfreeze(controlnet_params)
for key in [
"conv_in",
"time_embedding",
"down_blocks_0",
"down_blocks_1",
"down_blocks_2",
"down_blocks_3",
"mid_block",
]:
controlnet_params[key] = unet_params[key]
pipeline, pipeline_params = FlaxStableDiffusionControlNetPipeline.from_pretrained(
args.pretrained_model_name_or_path,
tokenizer=tokenizer,
controlnet=controlnet,
safety_checker=None,
dtype=weight_dtype,
revision=args.revision,
from_pt=args.from_pt,
)
pipeline_params = jax_utils.replicate(pipeline_params)
# Optimization
if args.scale_lr:
args.learning_rate = args.learning_rate * total_train_batch_size
constant_scheduler = optax.constant_schedule(args.learning_rate)
adamw = optax.adamw(
learning_rate=constant_scheduler,
b1=args.adam_beta1,
b2=args.adam_beta2,
eps=args.adam_epsilon,
weight_decay=args.adam_weight_decay,
)
optimizer = optax.chain(
optax.clip_by_global_norm(args.max_grad_norm),
adamw,
)
state = train_state.TrainState.create(apply_fn=controlnet.__call__, params=controlnet_params, tx=optimizer)
noise_scheduler, noise_scheduler_state = FlaxDDPMScheduler.from_pretrained(
args.pretrained_model_name_or_path, subfolder="scheduler"
)
# Initialize our training
validation_rng, train_rngs = jax.random.split(rng)
train_rngs = jax.random.split(train_rngs, jax.local_device_count())
def compute_snr(timesteps):
"""
Computes SNR as per https://github.com/TiankaiHang/Min-SNR-Diffusion-Training/blob/521b624bd70c67cee4bdf49225915f5945a872e3/guided_diffusion/gaussian_diffusion.py#L847-L849
"""
alphas_cumprod = noise_scheduler_state.common.alphas_cumprod
sqrt_alphas_cumprod = alphas_cumprod**0.5
sqrt_one_minus_alphas_cumprod = (1.0 - alphas_cumprod) ** 0.5
alpha = sqrt_alphas_cumprod[timesteps]
sigma = sqrt_one_minus_alphas_cumprod[timesteps]
# Compute SNR.
snr = (alpha / sigma) ** 2
return snr
def train_step(state, unet_params, text_encoder_params, vae_params, batch, train_rng):
# reshape batch, add grad_step_dim if gradient_accumulation_steps > 1
if args.gradient_accumulation_steps > 1:
grad_steps = args.gradient_accumulation_steps
batch = jax.tree_map(lambda x: x.reshape((grad_steps, x.shape[0] // grad_steps) + x.shape[1:]), batch)
def compute_loss(params, minibatch, sample_rng):
# Convert images to latent space
vae_outputs = vae.apply(
{"params": vae_params}, minibatch["pixel_values"], deterministic=True, method=vae.encode
)
latents = vae_outputs.latent_dist.sample(sample_rng)
# (NHWC) -> (NCHW)
latents = jnp.transpose(latents, (0, 3, 1, 2))
latents = latents * vae.config.scaling_factor
# Sample noise that we'll add to the latents
noise_rng, timestep_rng = jax.random.split(sample_rng)
noise = jax.random.normal(noise_rng, latents.shape)
# Sample a random timestep for each image
bsz = latents.shape[0]
timesteps = jax.random.randint(
timestep_rng,
(bsz,),
0,
noise_scheduler.config.num_train_timesteps,
)
# Add noise to the latents according to the noise magnitude at each timestep
# (this is the forward diffusion process)
noisy_latents = noise_scheduler.add_noise(noise_scheduler_state, latents, noise, timesteps)
# Get the text embedding for conditioning
encoder_hidden_states = text_encoder(
minibatch["input_ids"],
params=text_encoder_params,
train=False,
)[0]
controlnet_cond = minibatch["conditioning_pixel_values"]
# Predict the noise residual and compute loss
down_block_res_samples, mid_block_res_sample = controlnet.apply(
{"params": params},
noisy_latents,
timesteps,
encoder_hidden_states,
controlnet_cond,
train=True,
return_dict=False,
)
model_pred = unet.apply(
{"params": unet_params},
noisy_latents,
timesteps,
encoder_hidden_states,
down_block_additional_residuals=down_block_res_samples,
mid_block_additional_residual=mid_block_res_sample,
).sample
# Get the target for loss depending on the prediction type
if noise_scheduler.config.prediction_type == "epsilon":
target = noise
elif noise_scheduler.config.prediction_type == "v_prediction":
target = noise_scheduler.get_velocity(noise_scheduler_state, latents, noise, timesteps)
else:
raise ValueError(f"Unknown prediction type {noise_scheduler.config.prediction_type}")
loss = (target - model_pred) ** 2
if args.snr_gamma is not None:
snr = jnp.array(compute_snr(timesteps))
snr_loss_weights = jnp.where(snr < args.snr_gamma, snr, jnp.ones_like(snr) * args.snr_gamma)
if noise_scheduler.config.prediction_type == "epsilon":
snr_loss_weights = snr_loss_weights / snr
elif noise_scheduler.config.prediction_type == "v_prediction":
snr_loss_weights = snr_loss_weights / (snr + 1)
loss = loss * snr_loss_weights
loss = loss.mean()
return loss
grad_fn = jax.value_and_grad(compute_loss)
# get a minibatch (one gradient accumulation slice)
def get_minibatch(batch, grad_idx):
return jax.tree_util.tree_map(
lambda x: jax.lax.dynamic_index_in_dim(x, grad_idx, keepdims=False),
batch,
)
def loss_and_grad(grad_idx, train_rng):
# create minibatch for the grad step
minibatch = get_minibatch(batch, grad_idx) if grad_idx is not None else batch
sample_rng, train_rng = jax.random.split(train_rng, 2)
loss, grad = grad_fn(state.params, minibatch, sample_rng)
return loss, grad, train_rng
if args.gradient_accumulation_steps == 1:
loss, grad, new_train_rng = loss_and_grad(None, train_rng)
else:
init_loss_grad_rng = (
0.0, # initial value for cumul_loss
jax.tree_map(jnp.zeros_like, state.params), # initial value for cumul_grad
train_rng, # initial value for train_rng
)
def cumul_grad_step(grad_idx, loss_grad_rng):
cumul_loss, cumul_grad, train_rng = loss_grad_rng
loss, grad, new_train_rng = loss_and_grad(grad_idx, train_rng)
cumul_loss, cumul_grad = jax.tree_map(jnp.add, (cumul_loss, cumul_grad), (loss, grad))
return cumul_loss, cumul_grad, new_train_rng
loss, grad, new_train_rng = jax.lax.fori_loop(
0,
args.gradient_accumulation_steps,
cumul_grad_step,
init_loss_grad_rng,
)
loss, grad = jax.tree_map(lambda x: x / args.gradient_accumulation_steps, (loss, grad))
grad = jax.lax.pmean(grad, "batch")
new_state = state.apply_gradients(grads=grad)
metrics = {"loss": loss}
metrics = jax.lax.pmean(metrics, axis_name="batch")
def l2(xs):
return jnp.sqrt(sum([jnp.vdot(x, x) for x in jax.tree_util.tree_leaves(xs)]))
metrics["l2_grads"] = l2(jax.tree_util.tree_leaves(grad))
return new_state, metrics, new_train_rng
# Create parallel version of the train step
p_train_step = jax.pmap(train_step, "batch", donate_argnums=(0,))
# Replicate the train state on each device
state = jax_utils.replicate(state)
unet_params = jax_utils.replicate(unet_params)
text_encoder_params = jax_utils.replicate(text_encoder.params)
vae_params = jax_utils.replicate(vae_params)
# Train!
if args.streaming:
dataset_length = args.max_train_samples
else:
dataset_length = len(train_dataloader)
num_update_steps_per_epoch = math.ceil(dataset_length / args.gradient_accumulation_steps)
# Scheduler and math around the number of training steps.
if args.max_train_steps is None:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
logger.info("***** Running training *****")
logger.info(f" Num examples = {args.max_train_samples if args.streaming else len(train_dataset)}")
logger.info(f" Num Epochs = {args.num_train_epochs}")
logger.info(f" Instantaneous batch size per device = {args.train_batch_size}")
logger.info(f" Total train batch size (w. parallel & distributed) = {total_train_batch_size}")
logger.info(f" Total optimization steps = {args.num_train_epochs * num_update_steps_per_epoch}")
if jax.process_index() == 0 and args.report_to == "wandb":
wandb.define_metric("*", step_metric="train/step")
wandb.define_metric("train/step", step_metric="walltime")
wandb.config.update(
{
"num_train_examples": args.max_train_samples if args.streaming else len(train_dataset),
"total_train_batch_size": total_train_batch_size,
"total_optimization_step": args.num_train_epochs * num_update_steps_per_epoch,
"num_devices": jax.device_count(),
"controlnet_params": sum(np.prod(x.shape) for x in jax.tree_util.tree_leaves(state.params)),
}
)
global_step = step0 = 0
epochs = tqdm(
range(args.num_train_epochs),
desc="Epoch ... ",
position=0,
disable=jax.process_index() > 0,
)
if args.profile_memory:
jax.profiler.save_device_memory_profile(os.path.join(args.output_dir, "memory_initial.prof"))
t00 = t0 = time.monotonic()
for epoch in epochs:
# ======================== Training ================================
train_metrics = []
train_metric = None
steps_per_epoch = (
args.max_train_samples // total_train_batch_size
if args.streaming or args.max_train_samples
else len(train_dataset) // total_train_batch_size
)
train_step_progress_bar = tqdm(
total=steps_per_epoch,
desc="Training...",
position=1,
leave=False,
disable=jax.process_index() > 0,
)
# train
for batch in train_dataloader:
if args.profile_steps and global_step == 1:
train_metric["loss"].block_until_ready()
jax.profiler.start_trace(args.output_dir)
if args.profile_steps and global_step == 1 + args.profile_steps:
train_metric["loss"].block_until_ready()
jax.profiler.stop_trace()
batch = shard(batch)
with jax.profiler.StepTraceAnnotation("train", step_num=global_step):
state, train_metric, train_rngs = p_train_step(
state, unet_params, text_encoder_params, vae_params, batch, train_rngs
)
train_metrics.append(train_metric)
train_step_progress_bar.update(1)
global_step += 1
if global_step >= args.max_train_steps:
break
if (
args.validation_prompt is not None
and global_step % args.validation_steps == 0
and jax.process_index() == 0
):
_ = log_validation(
pipeline, pipeline_params, state.params, tokenizer, args, validation_rng, weight_dtype
)
if global_step % args.logging_steps == 0 and jax.process_index() == 0:
if args.report_to == "wandb":
train_metrics = jax_utils.unreplicate(train_metrics)
train_metrics = jax.tree_util.tree_map(lambda *m: jnp.array(m).mean(), *train_metrics)
wandb.log(
{
"walltime": time.monotonic() - t00,
"train/step": global_step,
"train/epoch": global_step / dataset_length,
"train/steps_per_sec": (global_step - step0) / (time.monotonic() - t0),
**{f"train/{k}": v for k, v in train_metrics.items()},
}
)
t0, step0 = time.monotonic(), global_step
train_metrics = []
if global_step % args.checkpointing_steps == 0 and jax.process_index() == 0:
controlnet.save_pretrained(
f"{args.output_dir}/{global_step}",
params=get_params_to_save(state.params),
)
train_metric = jax_utils.unreplicate(train_metric)
train_step_progress_bar.close()
epochs.write(f"Epoch... ({epoch + 1}/{args.num_train_epochs} | Loss: {train_metric['loss']})")
# Final validation & store model.
if jax.process_index() == 0:
if args.validation_prompt is not None:
if args.profile_validation:
jax.profiler.start_trace(args.output_dir)
image_logs = log_validation(
pipeline, pipeline_params, state.params, tokenizer, args, validation_rng, weight_dtype
)
if args.profile_validation:
jax.profiler.stop_trace()
else:
image_logs = None
controlnet.save_pretrained(
args.output_dir,
params=get_params_to_save(state.params),
)
if args.push_to_hub:
save_model_card(
repo_id,
image_logs=image_logs,
base_model=args.pretrained_model_name_or_path,
repo_folder=args.output_dir,
)
upload_folder(
repo_id=repo_id,
folder_path=args.output_dir,
commit_message="End of training",
ignore_patterns=["step_*", "epoch_*"],
)
if args.profile_memory:
jax.profiler.save_device_memory_profile(os.path.join(args.output_dir, "memory_final.prof"))
logger.info("Finished training.")
if __name__ == "__main__":
main()
|
diffusers/examples/controlnet/train_controlnet_flax.py/0
|
{
"file_path": "diffusers/examples/controlnet/train_controlnet_flax.py",
"repo_id": "diffusers",
"token_count": 20114
}
| 112
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import os
import shutil
import sys
import tempfile
from diffusers import DiffusionPipeline, UNet2DConditionModel
sys.path.append("..")
from test_examples_utils import ExamplesTestsAccelerate, run_command # noqa: E402
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger()
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
class DreamBooth(ExamplesTestsAccelerate):
def test_dreambooth(self):
with tempfile.TemporaryDirectory() as tmpdir:
test_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path hf-internal-testing/tiny-stable-diffusion-pipe
--instance_data_dir docs/source/en/imgs
--instance_prompt photo
--resolution 64
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 2
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--output_dir {tmpdir}
""".split()
run_command(self._launch_args + test_args)
# save_pretrained smoke test
self.assertTrue(os.path.isfile(os.path.join(tmpdir, "unet", "diffusion_pytorch_model.safetensors")))
self.assertTrue(os.path.isfile(os.path.join(tmpdir, "scheduler", "scheduler_config.json")))
def test_dreambooth_if(self):
with tempfile.TemporaryDirectory() as tmpdir:
test_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path hf-internal-testing/tiny-if-pipe
--instance_data_dir docs/source/en/imgs
--instance_prompt photo
--resolution 64
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 2
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--output_dir {tmpdir}
--pre_compute_text_embeddings
--tokenizer_max_length=77
--text_encoder_use_attention_mask
""".split()
run_command(self._launch_args + test_args)
# save_pretrained smoke test
self.assertTrue(os.path.isfile(os.path.join(tmpdir, "unet", "diffusion_pytorch_model.safetensors")))
self.assertTrue(os.path.isfile(os.path.join(tmpdir, "scheduler", "scheduler_config.json")))
def test_dreambooth_checkpointing(self):
instance_prompt = "photo"
pretrained_model_name_or_path = "hf-internal-testing/tiny-stable-diffusion-pipe"
with tempfile.TemporaryDirectory() as tmpdir:
# Run training script with checkpointing
# max_train_steps == 4, checkpointing_steps == 2
# Should create checkpoints at steps 2, 4
initial_run_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path {pretrained_model_name_or_path}
--instance_data_dir docs/source/en/imgs
--instance_prompt {instance_prompt}
--resolution 64
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 4
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--output_dir {tmpdir}
--checkpointing_steps=2
--seed=0
""".split()
run_command(self._launch_args + initial_run_args)
# check can run the original fully trained output pipeline
pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
pipe(instance_prompt, num_inference_steps=1)
# check checkpoint directories exist
self.assertTrue(os.path.isdir(os.path.join(tmpdir, "checkpoint-2")))
self.assertTrue(os.path.isdir(os.path.join(tmpdir, "checkpoint-4")))
# check can run an intermediate checkpoint
unet = UNet2DConditionModel.from_pretrained(tmpdir, subfolder="checkpoint-2/unet")
pipe = DiffusionPipeline.from_pretrained(pretrained_model_name_or_path, unet=unet, safety_checker=None)
pipe(instance_prompt, num_inference_steps=1)
# Remove checkpoint 2 so that we can check only later checkpoints exist after resuming
shutil.rmtree(os.path.join(tmpdir, "checkpoint-2"))
# Run training script for 7 total steps resuming from checkpoint 4
resume_run_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path {pretrained_model_name_or_path}
--instance_data_dir docs/source/en/imgs
--instance_prompt {instance_prompt}
--resolution 64
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 6
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--output_dir {tmpdir}
--checkpointing_steps=2
--resume_from_checkpoint=checkpoint-4
--seed=0
""".split()
run_command(self._launch_args + resume_run_args)
# check can run new fully trained pipeline
pipe = DiffusionPipeline.from_pretrained(tmpdir, safety_checker=None)
pipe(instance_prompt, num_inference_steps=1)
# check old checkpoints do not exist
self.assertFalse(os.path.isdir(os.path.join(tmpdir, "checkpoint-2")))
# check new checkpoints exist
self.assertTrue(os.path.isdir(os.path.join(tmpdir, "checkpoint-4")))
self.assertTrue(os.path.isdir(os.path.join(tmpdir, "checkpoint-6")))
def test_dreambooth_checkpointing_checkpoints_total_limit(self):
with tempfile.TemporaryDirectory() as tmpdir:
test_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path=hf-internal-testing/tiny-stable-diffusion-pipe
--instance_data_dir=docs/source/en/imgs
--output_dir={tmpdir}
--instance_prompt=prompt
--resolution=64
--train_batch_size=1
--gradient_accumulation_steps=1
--max_train_steps=6
--checkpoints_total_limit=2
--checkpointing_steps=2
""".split()
run_command(self._launch_args + test_args)
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-4", "checkpoint-6"},
)
def test_dreambooth_checkpointing_checkpoints_total_limit_removes_multiple_checkpoints(self):
with tempfile.TemporaryDirectory() as tmpdir:
test_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path=hf-internal-testing/tiny-stable-diffusion-pipe
--instance_data_dir=docs/source/en/imgs
--output_dir={tmpdir}
--instance_prompt=prompt
--resolution=64
--train_batch_size=1
--gradient_accumulation_steps=1
--max_train_steps=4
--checkpointing_steps=2
""".split()
run_command(self._launch_args + test_args)
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-2", "checkpoint-4"},
)
resume_run_args = f"""
examples/dreambooth/train_dreambooth.py
--pretrained_model_name_or_path=hf-internal-testing/tiny-stable-diffusion-pipe
--instance_data_dir=docs/source/en/imgs
--output_dir={tmpdir}
--instance_prompt=prompt
--resolution=64
--train_batch_size=1
--gradient_accumulation_steps=1
--max_train_steps=8
--checkpointing_steps=2
--resume_from_checkpoint=checkpoint-4
--checkpoints_total_limit=2
""".split()
run_command(self._launch_args + resume_run_args)
self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-6", "checkpoint-8"})
|
diffusers/examples/dreambooth/test_dreambooth.py/0
|
{
"file_path": "diffusers/examples/dreambooth/test_dreambooth.py",
"repo_id": "diffusers",
"token_count": 4466
}
| 113
|
import warnings
from diffusers import StableDiffusionImg2ImgPipeline # noqa F401
warnings.warn(
"The `image_to_image.py` script is outdated. Please use directly `from diffusers import"
" StableDiffusionImg2ImgPipeline` instead."
)
|
diffusers/examples/inference/image_to_image.py/0
|
{
"file_path": "diffusers/examples/inference/image_to_image.py",
"repo_id": "diffusers",
"token_count": 84
}
| 114
|
# Research projects
This folder contains various research projects using 🧨 Diffusers.
They are not really maintained by the core maintainers of this library and often require a specific version of Diffusers that is indicated in the requirements file of each folder.
Updating them to the most recent version of the library will require some work.
To use any of them, just run the command
```sh
pip install -r requirements.txt
```
inside the folder of your choice.
If you need help with any of those, please open an issue where you directly ping the author(s), as indicated at the top of the README of each folder.
|
diffusers/examples/research_projects/README.md/0
|
{
"file_path": "diffusers/examples/research_projects/README.md",
"repo_id": "diffusers",
"token_count": 144
}
| 115
|
## Diffusers examples with Intel optimizations
**This research project is not actively maintained by the diffusers team. For any questions or comments, please make sure to tag @hshen14 .**
This aims to provide diffusers examples with Intel optimizations such as Bfloat16 for training/fine-tuning acceleration and 8-bit integer (INT8) for inference acceleration on Intel platforms.
## Accelerating the fine-tuning for textual inversion
We accelerate the fine-tuning for textual inversion with Intel Extension for PyTorch. The [examples](textual_inversion) enable both single node and multi-node distributed training with Bfloat16 support on Intel Xeon Scalable Processor.
## Accelerating the inference for Stable Diffusion using Bfloat16
We start the inference acceleration with Bfloat16 using Intel Extension for PyTorch. The [script](inference_bf16.py) is generally designed to support standard Stable Diffusion models with Bfloat16 support.
```bash
pip install diffusers transformers accelerate scipy safetensors
export KMP_BLOCKTIME=1
export KMP_SETTINGS=1
export KMP_AFFINITY=granularity=fine,compact,1,0
# Intel OpenMP
export OMP_NUM_THREADS=< Cores to use >
export LD_PRELOAD=${LD_PRELOAD}:/path/to/lib/libiomp5.so
# Jemalloc is a recommended malloc implementation that emphasizes fragmentation avoidance and scalable concurrency support.
export LD_PRELOAD=${LD_PRELOAD}:/path/to/lib/libjemalloc.so
export MALLOC_CONF="oversize_threshold:1,background_thread:true,metadata_thp:auto,dirty_decay_ms:-1,muzzy_decay_ms:9000000000"
# Launch with default DDIM
numactl --membind <node N> -C <cpu list> python python inference_bf16.py
# Launch with DPMSolverMultistepScheduler
numactl --membind <node N> -C <cpu list> python python inference_bf16.py --dpm
```
## Accelerating the inference for Stable Diffusion using INT8
Coming soon ...
|
diffusers/examples/research_projects/intel_opts/README.md/0
|
{
"file_path": "diffusers/examples/research_projects/intel_opts/README.md",
"repo_id": "diffusers",
"token_count": 524
}
| 116
|
## Textual Inversion fine-tuning example
[Textual inversion](https://arxiv.org/abs/2208.01618) is a method to personalize text2image models like stable diffusion on your own images using just 3-5 examples.
The `textual_inversion.py` script shows how to implement the training procedure and adapt it for stable diffusion.
## Running on Colab
Colab for training
[](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/sd_textual_inversion_training.ipynb)
Colab for inference
[](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/stable_conceptualizer_inference.ipynb)
## Running locally with PyTorch
### Installing the dependencies
Before running the scripts, make sure to install the library's training dependencies:
**Important**
To make sure you can successfully run the latest versions of the example scripts, we highly recommend **installing from source** and keeping the install up to date as we update the example scripts frequently and install some example-specific requirements. To do this, execute the following steps in a new virtual environment:
```bash
git clone https://github.com/huggingface/diffusers
cd diffusers
pip install .
```
Then cd in the example folder and run:
```bash
pip install -r requirements.txt
```
And initialize an [🤗 Accelerate](https://github.com/huggingface/accelerate/) environment with:
```bash
accelerate config
```
### Cat toy example
First, let's login so that we can upload the checkpoint to the Hub during training:
```bash
huggingface-cli login
```
Now let's get our dataset. For this example we will use some cat images: https://huggingface.co/datasets/diffusers/cat_toy_example .
Let's first download it locally:
```py
from huggingface_hub import snapshot_download
local_dir = "./cat"
snapshot_download("diffusers/cat_toy_example", local_dir=local_dir, repo_type="dataset", ignore_patterns=".gitattributes")
```
This will be our training data.
Now we can launch the training using:
**___Note: Change the `resolution` to 768 if you are using the [stable-diffusion-2](https://huggingface.co/stabilityai/stable-diffusion-2) 768x768 model.___**
**___Note: Please follow the [README_sdxl.md](./README_sdxl.md) if you are using the [stable-diffusion-xl](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0).___**
```bash
export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export DATA_DIR="./cat"
accelerate launch textual_inversion.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--train_data_dir=$DATA_DIR \
--learnable_property="object" \
--placeholder_token="<cat-toy>" \
--initializer_token="toy" \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=4 \
--max_train_steps=3000 \
--learning_rate=5.0e-04 \
--scale_lr \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--push_to_hub \
--output_dir="textual_inversion_cat"
```
A full training run takes ~1 hour on one V100 GPU.
**Note**: As described in [the official paper](https://arxiv.org/abs/2208.01618)
only one embedding vector is used for the placeholder token, *e.g.* `"<cat-toy>"`.
However, one can also add multiple embedding vectors for the placeholder token
to increase the number of fine-tuneable parameters. This can help the model to learn
more complex details. To use multiple embedding vectors, you should define `--num_vectors`
to a number larger than one, *e.g.*:
```bash
--num_vectors 5
```
The saved textual inversion vectors will then be larger in size compared to the default case.
### Inference
Once you have trained a model using above command, the inference can be done simply using the `StableDiffusionPipeline`. Make sure to include the `placeholder_token` in your prompt.
```python
from diffusers import StableDiffusionPipeline
import torch
model_id = "path-to-your-trained-model"
pipe = StableDiffusionPipeline.from_pretrained(model_id,torch_dtype=torch.float16).to("cuda")
repo_id_embeds = "path-to-your-learned-embeds"
pipe.load_textual_inversion(repo_id_embeds)
prompt = "A <cat-toy> backpack"
image = pipe(prompt, num_inference_steps=50, guidance_scale=7.5).images[0]
image.save("cat-backpack.png")
```
## Training with Flax/JAX
For faster training on TPUs and GPUs you can leverage the flax training example. Follow the instructions above to get the model and dataset before running the script.
Before running the scripts, make sure to install the library's training dependencies:
```bash
pip install -U -r requirements_flax.txt
```
```bash
export MODEL_NAME="duongna/stable-diffusion-v1-4-flax"
export DATA_DIR="path-to-dir-containing-images"
python textual_inversion_flax.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--train_data_dir=$DATA_DIR \
--learnable_property="object" \
--placeholder_token="<cat-toy>" \
--initializer_token="toy" \
--resolution=512 \
--train_batch_size=1 \
--max_train_steps=3000 \
--learning_rate=5.0e-04 \
--scale_lr \
--output_dir="textual_inversion_cat"
```
It should be at least 70% faster than the PyTorch script with the same configuration.
### Training with xformers:
You can enable memory efficient attention by [installing xFormers](https://github.com/facebookresearch/xformers#installing-xformers) and padding the `--enable_xformers_memory_efficient_attention` argument to the script. This is not available with the Flax/JAX implementation.
|
diffusers/examples/textual_inversion/README.md/0
|
{
"file_path": "diffusers/examples/textual_inversion/README.md",
"repo_id": "diffusers",
"token_count": 1778
}
| 117
|
#!/usr/bin/env python
# coding=utf-8
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import logging
import os
import shutil
import sys
import tempfile
import torch
from diffusers import VQModel
from diffusers.utils.testing_utils import require_timm
sys.path.append("..")
from test_examples_utils import ExamplesTestsAccelerate, run_command # noqa: E402
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger()
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
@require_timm
class TextToImage(ExamplesTestsAccelerate):
@property
def test_vqmodel_config(self):
return {
"_class_name": "VQModel",
"_diffusers_version": "0.17.0.dev0",
"act_fn": "silu",
"block_out_channels": [
32,
],
"down_block_types": [
"DownEncoderBlock2D",
],
"in_channels": 3,
"latent_channels": 4,
"layers_per_block": 2,
"norm_num_groups": 32,
"norm_type": "spatial",
"num_vq_embeddings": 32,
"out_channels": 3,
"sample_size": 32,
"scaling_factor": 0.18215,
"up_block_types": [
"UpDecoderBlock2D",
],
"vq_embed_dim": 4,
}
@property
def test_discriminator_config(self):
return {
"_class_name": "Discriminator",
"_diffusers_version": "0.27.0.dev0",
"in_channels": 3,
"cond_channels": 0,
"hidden_channels": 8,
"depth": 4,
}
def get_vq_and_discriminator_configs(self, tmpdir):
vqmodel_config_path = os.path.join(tmpdir, "vqmodel.json")
discriminator_config_path = os.path.join(tmpdir, "discriminator.json")
with open(vqmodel_config_path, "w") as fp:
json.dump(self.test_vqmodel_config, fp)
with open(discriminator_config_path, "w") as fp:
json.dump(self.test_discriminator_config, fp)
return vqmodel_config_path, discriminator_config_path
def test_vqmodel(self):
with tempfile.TemporaryDirectory() as tmpdir:
vqmodel_config_path, discriminator_config_path = self.get_vq_and_discriminator_configs(tmpdir)
test_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 2
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--output_dir {tmpdir}
""".split()
run_command(self._launch_args + test_args)
# save_pretrained smoke test
self.assertTrue(
os.path.isfile(os.path.join(tmpdir, "discriminator", "diffusion_pytorch_model.safetensors"))
)
self.assertTrue(os.path.isfile(os.path.join(tmpdir, "vqmodel", "diffusion_pytorch_model.safetensors")))
def test_vqmodel_checkpointing(self):
with tempfile.TemporaryDirectory() as tmpdir:
vqmodel_config_path, discriminator_config_path = self.get_vq_and_discriminator_configs(tmpdir)
# Run training script with checkpointing
# max_train_steps == 4, checkpointing_steps == 2
# Should create checkpoints at steps 2, 4
initial_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 4
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--checkpointing_steps=2
--output_dir {tmpdir}
--seed=0
""".split()
run_command(self._launch_args + initial_run_args)
# check checkpoint directories exist
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-2", "checkpoint-4"},
)
# check can run an intermediate checkpoint
model = VQModel.from_pretrained(tmpdir, subfolder="checkpoint-2/vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# Remove checkpoint 2 so that we can check only later checkpoints exist after resuming
shutil.rmtree(os.path.join(tmpdir, "checkpoint-2"))
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-4"},
)
# Run training script for 2 total steps resuming from checkpoint 4
resume_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 6
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--checkpointing_steps=1
--resume_from_checkpoint={os.path.join(tmpdir, 'checkpoint-4')}
--output_dir {tmpdir}
--seed=0
""".split()
run_command(self._launch_args + resume_run_args)
# check can run new fully trained pipeline
model = VQModel.from_pretrained(tmpdir, subfolder="vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# no checkpoint-2 -> check old checkpoints do not exist
# check new checkpoints exist
# In the current script, checkpointing_steps 1 is equivalent to checkpointing_steps 2 as after the generator gets trained for one step,
# the discriminator gets trained and loss and saving happens after that. Thus we do not expect to get a checkpoint-5
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-4", "checkpoint-6"},
)
def test_vqmodel_checkpointing_use_ema(self):
with tempfile.TemporaryDirectory() as tmpdir:
vqmodel_config_path, discriminator_config_path = self.get_vq_and_discriminator_configs(tmpdir)
# Run training script with checkpointing
# max_train_steps == 4, checkpointing_steps == 2
# Should create checkpoints at steps 2, 4
initial_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 4
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--checkpointing_steps=2
--output_dir {tmpdir}
--use_ema
--seed=0
""".split()
run_command(self._launch_args + initial_run_args)
model = VQModel.from_pretrained(tmpdir, subfolder="vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# check checkpoint directories exist
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-2", "checkpoint-4"},
)
# check can run an intermediate checkpoint
model = VQModel.from_pretrained(tmpdir, subfolder="checkpoint-2/vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# Remove checkpoint 2 so that we can check only later checkpoints exist after resuming
shutil.rmtree(os.path.join(tmpdir, "checkpoint-2"))
# Run training script for 2 total steps resuming from checkpoint 4
resume_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 6
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--checkpointing_steps=1
--resume_from_checkpoint={os.path.join(tmpdir, 'checkpoint-4')}
--output_dir {tmpdir}
--use_ema
--seed=0
""".split()
run_command(self._launch_args + resume_run_args)
# check can run new fully trained pipeline
model = VQModel.from_pretrained(tmpdir, subfolder="vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# no checkpoint-2 -> check old checkpoints do not exist
# check new checkpoints exist
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-4", "checkpoint-6"},
)
def test_vqmodel_checkpointing_checkpoints_total_limit(self):
with tempfile.TemporaryDirectory() as tmpdir:
vqmodel_config_path, discriminator_config_path = self.get_vq_and_discriminator_configs(tmpdir)
# Run training script with checkpointing
# max_train_steps == 6, checkpointing_steps == 2, checkpoints_total_limit == 2
# Should create checkpoints at steps 2, 4, 6
# with checkpoint at step 2 deleted
initial_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 6
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--output_dir {tmpdir}
--checkpointing_steps=2
--checkpoints_total_limit=2
--seed=0
""".split()
run_command(self._launch_args + initial_run_args)
model = VQModel.from_pretrained(tmpdir, subfolder="vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# check checkpoint directories exist
# checkpoint-2 should have been deleted
self.assertEqual({x for x in os.listdir(tmpdir) if "checkpoint" in x}, {"checkpoint-4", "checkpoint-6"})
def test_vqmodel_checkpointing_checkpoints_total_limit_removes_multiple_checkpoints(self):
with tempfile.TemporaryDirectory() as tmpdir:
vqmodel_config_path, discriminator_config_path = self.get_vq_and_discriminator_configs(tmpdir)
# Run training script with checkpointing
# max_train_steps == 4, checkpointing_steps == 2
# Should create checkpoints at steps 2, 4
initial_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 4
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--checkpointing_steps=2
--output_dir {tmpdir}
--seed=0
""".split()
run_command(self._launch_args + initial_run_args)
model = VQModel.from_pretrained(tmpdir, subfolder="vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# check checkpoint directories exist
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-2", "checkpoint-4"},
)
# resume and we should try to checkpoint at 6, where we'll have to remove
# checkpoint-2 and checkpoint-4 instead of just a single previous checkpoint
resume_run_args = f"""
examples/vqgan/train_vqgan.py
--dataset_name hf-internal-testing/dummy_image_text_data
--resolution 32
--image_column image
--train_batch_size 1
--gradient_accumulation_steps 1
--max_train_steps 8
--learning_rate 5.0e-04
--scale_lr
--lr_scheduler constant
--lr_warmup_steps 0
--model_config_name_or_path {vqmodel_config_path}
--discriminator_config_name_or_path {discriminator_config_path}
--output_dir {tmpdir}
--checkpointing_steps=2
--resume_from_checkpoint={os.path.join(tmpdir, 'checkpoint-4')}
--checkpoints_total_limit=2
--seed=0
""".split()
run_command(self._launch_args + resume_run_args)
model = VQModel.from_pretrained(tmpdir, subfolder="vqmodel")
image = torch.randn(1, model.config.in_channels, model.config.sample_size, model.config.sample_size)
_ = model(image)
# check checkpoint directories exist
self.assertEqual(
{x for x in os.listdir(tmpdir) if "checkpoint" in x},
{"checkpoint-6", "checkpoint-8"},
)
|
diffusers/examples/vqgan/test_vqgan.py/0
|
{
"file_path": "diffusers/examples/vqgan/test_vqgan.py",
"repo_id": "diffusers",
"token_count": 8162
}
| 118
|
import argparse
import time
from pathlib import Path
from typing import Any, Dict, Literal
import torch
from diffusers import AsymmetricAutoencoderKL
ASYMMETRIC_AUTOENCODER_KL_x_1_5_CONFIG = {
"in_channels": 3,
"out_channels": 3,
"down_block_types": [
"DownEncoderBlock2D",
"DownEncoderBlock2D",
"DownEncoderBlock2D",
"DownEncoderBlock2D",
],
"down_block_out_channels": [128, 256, 512, 512],
"layers_per_down_block": 2,
"up_block_types": [
"UpDecoderBlock2D",
"UpDecoderBlock2D",
"UpDecoderBlock2D",
"UpDecoderBlock2D",
],
"up_block_out_channels": [192, 384, 768, 768],
"layers_per_up_block": 3,
"act_fn": "silu",
"latent_channels": 4,
"norm_num_groups": 32,
"sample_size": 256,
"scaling_factor": 0.18215,
}
ASYMMETRIC_AUTOENCODER_KL_x_2_CONFIG = {
"in_channels": 3,
"out_channels": 3,
"down_block_types": [
"DownEncoderBlock2D",
"DownEncoderBlock2D",
"DownEncoderBlock2D",
"DownEncoderBlock2D",
],
"down_block_out_channels": [128, 256, 512, 512],
"layers_per_down_block": 2,
"up_block_types": [
"UpDecoderBlock2D",
"UpDecoderBlock2D",
"UpDecoderBlock2D",
"UpDecoderBlock2D",
],
"up_block_out_channels": [256, 512, 1024, 1024],
"layers_per_up_block": 5,
"act_fn": "silu",
"latent_channels": 4,
"norm_num_groups": 32,
"sample_size": 256,
"scaling_factor": 0.18215,
}
def convert_asymmetric_autoencoder_kl_state_dict(original_state_dict: Dict[str, Any]) -> Dict[str, Any]:
converted_state_dict = {}
for k, v in original_state_dict.items():
if k.startswith("encoder."):
converted_state_dict[
k.replace("encoder.down.", "encoder.down_blocks.")
.replace("encoder.mid.", "encoder.mid_block.")
.replace("encoder.norm_out.", "encoder.conv_norm_out.")
.replace(".downsample.", ".downsamplers.0.")
.replace(".nin_shortcut.", ".conv_shortcut.")
.replace(".block.", ".resnets.")
.replace(".block_1.", ".resnets.0.")
.replace(".block_2.", ".resnets.1.")
.replace(".attn_1.k.", ".attentions.0.to_k.")
.replace(".attn_1.q.", ".attentions.0.to_q.")
.replace(".attn_1.v.", ".attentions.0.to_v.")
.replace(".attn_1.proj_out.", ".attentions.0.to_out.0.")
.replace(".attn_1.norm.", ".attentions.0.group_norm.")
] = v
elif k.startswith("decoder.") and "up_layers" not in k:
converted_state_dict[
k.replace("decoder.encoder.", "decoder.condition_encoder.")
.replace(".norm_out.", ".conv_norm_out.")
.replace(".up.0.", ".up_blocks.3.")
.replace(".up.1.", ".up_blocks.2.")
.replace(".up.2.", ".up_blocks.1.")
.replace(".up.3.", ".up_blocks.0.")
.replace(".block.", ".resnets.")
.replace("mid", "mid_block")
.replace(".0.upsample.", ".0.upsamplers.0.")
.replace(".1.upsample.", ".1.upsamplers.0.")
.replace(".2.upsample.", ".2.upsamplers.0.")
.replace(".nin_shortcut.", ".conv_shortcut.")
.replace(".block_1.", ".resnets.0.")
.replace(".block_2.", ".resnets.1.")
.replace(".attn_1.k.", ".attentions.0.to_k.")
.replace(".attn_1.q.", ".attentions.0.to_q.")
.replace(".attn_1.v.", ".attentions.0.to_v.")
.replace(".attn_1.proj_out.", ".attentions.0.to_out.0.")
.replace(".attn_1.norm.", ".attentions.0.group_norm.")
] = v
elif k.startswith("quant_conv."):
converted_state_dict[k] = v
elif k.startswith("post_quant_conv."):
converted_state_dict[k] = v
else:
print(f" skipping key `{k}`")
# fix weights shape
for k, v in converted_state_dict.items():
if (
(k.startswith("encoder.mid_block.attentions.0") or k.startswith("decoder.mid_block.attentions.0"))
and k.endswith("weight")
and ("to_q" in k or "to_k" in k or "to_v" in k or "to_out" in k)
):
converted_state_dict[k] = converted_state_dict[k][:, :, 0, 0]
return converted_state_dict
def get_asymmetric_autoencoder_kl_from_original_checkpoint(
scale: Literal["1.5", "2"], original_checkpoint_path: str, map_location: torch.device
) -> AsymmetricAutoencoderKL:
print("Loading original state_dict")
original_state_dict = torch.load(original_checkpoint_path, map_location=map_location)
original_state_dict = original_state_dict["state_dict"]
print("Converting state_dict")
converted_state_dict = convert_asymmetric_autoencoder_kl_state_dict(original_state_dict)
kwargs = ASYMMETRIC_AUTOENCODER_KL_x_1_5_CONFIG if scale == "1.5" else ASYMMETRIC_AUTOENCODER_KL_x_2_CONFIG
print("Initializing AsymmetricAutoencoderKL model")
asymmetric_autoencoder_kl = AsymmetricAutoencoderKL(**kwargs)
print("Loading weight from converted state_dict")
asymmetric_autoencoder_kl.load_state_dict(converted_state_dict)
asymmetric_autoencoder_kl.eval()
print("AsymmetricAutoencoderKL successfully initialized")
return asymmetric_autoencoder_kl
if __name__ == "__main__":
start = time.time()
parser = argparse.ArgumentParser()
parser.add_argument(
"--scale",
default=None,
type=str,
required=True,
help="Asymmetric VQGAN scale: `1.5` or `2`",
)
parser.add_argument(
"--original_checkpoint_path",
default=None,
type=str,
required=True,
help="Path to the original Asymmetric VQGAN checkpoint",
)
parser.add_argument(
"--output_path",
default=None,
type=str,
required=True,
help="Path to save pretrained AsymmetricAutoencoderKL model",
)
parser.add_argument(
"--map_location",
default="cpu",
type=str,
required=False,
help="The device passed to `map_location` when loading the checkpoint",
)
args = parser.parse_args()
assert args.scale in ["1.5", "2"], f"{args.scale} should be `1.5` of `2`"
assert Path(args.original_checkpoint_path).is_file()
asymmetric_autoencoder_kl = get_asymmetric_autoencoder_kl_from_original_checkpoint(
scale=args.scale,
original_checkpoint_path=args.original_checkpoint_path,
map_location=torch.device(args.map_location),
)
print("Saving pretrained AsymmetricAutoencoderKL")
asymmetric_autoencoder_kl.save_pretrained(args.output_path)
print(f"Done in {time.time() - start:.2f} seconds")
|
diffusers/scripts/convert_asymmetric_vqgan_to_diffusers.py/0
|
{
"file_path": "diffusers/scripts/convert_asymmetric_vqgan_to_diffusers.py",
"repo_id": "diffusers",
"token_count": 3351
}
| 119
|
# Convert the original UniDiffuser checkpoints into diffusers equivalents.
import argparse
from argparse import Namespace
import torch
from transformers import (
CLIPImageProcessor,
CLIPTextConfig,
CLIPTextModel,
CLIPTokenizer,
CLIPVisionConfig,
CLIPVisionModelWithProjection,
GPT2Tokenizer,
)
from diffusers import (
AutoencoderKL,
DPMSolverMultistepScheduler,
UniDiffuserModel,
UniDiffuserPipeline,
UniDiffuserTextDecoder,
)
SCHEDULER_CONFIG = Namespace(
**{
"beta_start": 0.00085,
"beta_end": 0.012,
"beta_schedule": "scaled_linear",
"solver_order": 3,
}
)
# Copied from diffusers.pipelines.stable_diffusion.convert_from_ckpt.shave_segments
def shave_segments(path, n_shave_prefix_segments=1):
"""
Removes segments. Positive values shave the first segments, negative shave the last segments.
"""
if n_shave_prefix_segments >= 0:
return ".".join(path.split(".")[n_shave_prefix_segments:])
else:
return ".".join(path.split(".")[:n_shave_prefix_segments])
# Copied from diffusers.pipelines.stable_diffusion.convert_from_ckpt.renew_vae_resnet_paths
def renew_vae_resnet_paths(old_list, n_shave_prefix_segments=0):
"""
Updates paths inside resnets to the new naming scheme (local renaming)
"""
mapping = []
for old_item in old_list:
new_item = old_item
new_item = new_item.replace("nin_shortcut", "conv_shortcut")
new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments)
mapping.append({"old": old_item, "new": new_item})
return mapping
# Copied from diffusers.pipelines.stable_diffusion.convert_from_ckpt.renew_vae_attention_paths
def renew_vae_attention_paths(old_list, n_shave_prefix_segments=0):
"""
Updates paths inside attentions to the new naming scheme (local renaming)
"""
mapping = []
for old_item in old_list:
new_item = old_item
new_item = new_item.replace("norm.weight", "group_norm.weight")
new_item = new_item.replace("norm.bias", "group_norm.bias")
new_item = new_item.replace("q.weight", "to_q.weight")
new_item = new_item.replace("q.bias", "to_q.bias")
new_item = new_item.replace("k.weight", "to_k.weight")
new_item = new_item.replace("k.bias", "to_k.bias")
new_item = new_item.replace("v.weight", "to_v.weight")
new_item = new_item.replace("v.bias", "to_v.bias")
new_item = new_item.replace("proj_out.weight", "to_out.0.weight")
new_item = new_item.replace("proj_out.bias", "to_out.0.bias")
new_item = shave_segments(new_item, n_shave_prefix_segments=n_shave_prefix_segments)
mapping.append({"old": old_item, "new": new_item})
return mapping
# Copied from diffusers.pipelines.stable_diffusion.convert_from_ckpt.conv_attn_to_linear
def conv_attn_to_linear(checkpoint):
keys = list(checkpoint.keys())
attn_keys = ["query.weight", "key.weight", "value.weight"]
for key in keys:
if ".".join(key.split(".")[-2:]) in attn_keys:
if checkpoint[key].ndim > 2:
checkpoint[key] = checkpoint[key][:, :, 0, 0]
elif "proj_attn.weight" in key:
if checkpoint[key].ndim > 2:
checkpoint[key] = checkpoint[key][:, :, 0]
# Modified from diffusers.pipelines.stable_diffusion.convert_from_ckpt.assign_to_checkpoint
# config.num_head_channels => num_head_channels
def assign_to_checkpoint(
paths,
checkpoint,
old_checkpoint,
attention_paths_to_split=None,
additional_replacements=None,
num_head_channels=1,
):
"""
This does the final conversion step: take locally converted weights and apply a global renaming to them. It splits
attention layers, and takes into account additional replacements that may arise.
Assigns the weights to the new checkpoint.
"""
assert isinstance(paths, list), "Paths should be a list of dicts containing 'old' and 'new' keys."
# Splits the attention layers into three variables.
if attention_paths_to_split is not None:
for path, path_map in attention_paths_to_split.items():
old_tensor = old_checkpoint[path]
channels = old_tensor.shape[0] // 3
target_shape = (-1, channels) if len(old_tensor.shape) == 3 else (-1)
num_heads = old_tensor.shape[0] // num_head_channels // 3
old_tensor = old_tensor.reshape((num_heads, 3 * channels // num_heads) + old_tensor.shape[1:])
query, key, value = old_tensor.split(channels // num_heads, dim=1)
checkpoint[path_map["query"]] = query.reshape(target_shape)
checkpoint[path_map["key"]] = key.reshape(target_shape)
checkpoint[path_map["value"]] = value.reshape(target_shape)
for path in paths:
new_path = path["new"]
# These have already been assigned
if attention_paths_to_split is not None and new_path in attention_paths_to_split:
continue
# Global renaming happens here
new_path = new_path.replace("middle_block.0", "mid_block.resnets.0")
new_path = new_path.replace("middle_block.1", "mid_block.attentions.0")
new_path = new_path.replace("middle_block.2", "mid_block.resnets.1")
if additional_replacements is not None:
for replacement in additional_replacements:
new_path = new_path.replace(replacement["old"], replacement["new"])
# proj_attn.weight has to be converted from conv 1D to linear
is_attn_weight = "proj_attn.weight" in new_path or ("attentions" in new_path and "to_" in new_path)
shape = old_checkpoint[path["old"]].shape
if is_attn_weight and len(shape) == 3:
checkpoint[new_path] = old_checkpoint[path["old"]][:, :, 0]
elif is_attn_weight and len(shape) == 4:
checkpoint[new_path] = old_checkpoint[path["old"]][:, :, 0, 0]
else:
checkpoint[new_path] = old_checkpoint[path["old"]]
def create_vae_diffusers_config(config_type):
# Hardcoded for now
if args.config_type == "test":
vae_config = create_vae_diffusers_config_test()
elif args.config_type == "big":
vae_config = create_vae_diffusers_config_big()
else:
raise NotImplementedError(
f"Config type {config_type} is not implemented, currently only config types"
" 'test' and 'big' are available."
)
return vae_config
def create_unidiffuser_unet_config(config_type, version):
# Hardcoded for now
if args.config_type == "test":
unet_config = create_unidiffuser_unet_config_test()
elif args.config_type == "big":
unet_config = create_unidiffuser_unet_config_big()
else:
raise NotImplementedError(
f"Config type {config_type} is not implemented, currently only config types"
" 'test' and 'big' are available."
)
# Unidiffuser-v1 uses data type embeddings
if version == 1:
unet_config["use_data_type_embedding"] = True
return unet_config
def create_text_decoder_config(config_type):
# Hardcoded for now
if args.config_type == "test":
text_decoder_config = create_text_decoder_config_test()
elif args.config_type == "big":
text_decoder_config = create_text_decoder_config_big()
else:
raise NotImplementedError(
f"Config type {config_type} is not implemented, currently only config types"
" 'test' and 'big' are available."
)
return text_decoder_config
# Hardcoded configs for test versions of the UniDiffuser models, corresponding to those in the fast default tests.
def create_vae_diffusers_config_test():
vae_config = {
"sample_size": 32,
"in_channels": 3,
"out_channels": 3,
"down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
"up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
"block_out_channels": [32, 64],
"latent_channels": 4,
"layers_per_block": 1,
}
return vae_config
def create_unidiffuser_unet_config_test():
unet_config = {
"text_dim": 32,
"clip_img_dim": 32,
"num_text_tokens": 77,
"num_attention_heads": 2,
"attention_head_dim": 8,
"in_channels": 4,
"out_channels": 4,
"num_layers": 2,
"dropout": 0.0,
"norm_num_groups": 32,
"attention_bias": False,
"sample_size": 16,
"patch_size": 2,
"activation_fn": "gelu",
"num_embeds_ada_norm": 1000,
"norm_type": "layer_norm",
"block_type": "unidiffuser",
"pre_layer_norm": False,
"use_timestep_embedding": False,
"norm_elementwise_affine": True,
"use_patch_pos_embed": False,
"ff_final_dropout": True,
"use_data_type_embedding": False,
}
return unet_config
def create_text_decoder_config_test():
text_decoder_config = {
"prefix_length": 77,
"prefix_inner_dim": 32,
"prefix_hidden_dim": 32,
"vocab_size": 1025, # 1024 + 1 for new EOS token
"n_positions": 1024,
"n_embd": 32,
"n_layer": 5,
"n_head": 4,
"n_inner": 37,
"activation_function": "gelu",
"resid_pdrop": 0.1,
"embd_pdrop": 0.1,
"attn_pdrop": 0.1,
"layer_norm_epsilon": 1e-5,
"initializer_range": 0.02,
}
return text_decoder_config
# Hardcoded configs for the UniDiffuser V1 model at https://huggingface.co/thu-ml/unidiffuser-v1
# See also https://github.com/thu-ml/unidiffuser/blob/main/configs/sample_unidiffuser_v1.py
def create_vae_diffusers_config_big():
vae_config = {
"sample_size": 256,
"in_channels": 3,
"out_channels": 3,
"down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D", "DownEncoderBlock2D", "DownEncoderBlock2D"],
"up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D", "UpDecoderBlock2D", "UpDecoderBlock2D"],
"block_out_channels": [128, 256, 512, 512],
"latent_channels": 4,
"layers_per_block": 2,
}
return vae_config
def create_unidiffuser_unet_config_big():
unet_config = {
"text_dim": 64,
"clip_img_dim": 512,
"num_text_tokens": 77,
"num_attention_heads": 24,
"attention_head_dim": 64,
"in_channels": 4,
"out_channels": 4,
"num_layers": 30,
"dropout": 0.0,
"norm_num_groups": 32,
"attention_bias": False,
"sample_size": 64,
"patch_size": 2,
"activation_fn": "gelu",
"num_embeds_ada_norm": 1000,
"norm_type": "layer_norm",
"block_type": "unidiffuser",
"pre_layer_norm": False,
"use_timestep_embedding": False,
"norm_elementwise_affine": True,
"use_patch_pos_embed": False,
"ff_final_dropout": True,
"use_data_type_embedding": False,
}
return unet_config
# From https://huggingface.co/gpt2/blob/main/config.json, the GPT2 checkpoint used by UniDiffuser
def create_text_decoder_config_big():
text_decoder_config = {
"prefix_length": 77,
"prefix_inner_dim": 768,
"prefix_hidden_dim": 64,
"vocab_size": 50258, # 50257 + 1 for new EOS token
"n_positions": 1024,
"n_embd": 768,
"n_layer": 12,
"n_head": 12,
"n_inner": 3072,
"activation_function": "gelu",
"resid_pdrop": 0.1,
"embd_pdrop": 0.1,
"attn_pdrop": 0.1,
"layer_norm_epsilon": 1e-5,
"initializer_range": 0.02,
}
return text_decoder_config
# Based on diffusers.pipelines.stable_diffusion.convert_from_ckpt.convert_ldm_vae_checkpoint
def convert_vae_to_diffusers(ckpt, diffusers_model, num_head_channels=1):
"""
Converts a UniDiffuser autoencoder_kl.pth checkpoint to a diffusers AutoencoderKL.
"""
# autoencoder_kl.pth ckpt is a torch state dict
vae_state_dict = torch.load(ckpt, map_location="cpu")
new_checkpoint = {}
new_checkpoint["encoder.conv_in.weight"] = vae_state_dict["encoder.conv_in.weight"]
new_checkpoint["encoder.conv_in.bias"] = vae_state_dict["encoder.conv_in.bias"]
new_checkpoint["encoder.conv_out.weight"] = vae_state_dict["encoder.conv_out.weight"]
new_checkpoint["encoder.conv_out.bias"] = vae_state_dict["encoder.conv_out.bias"]
new_checkpoint["encoder.conv_norm_out.weight"] = vae_state_dict["encoder.norm_out.weight"]
new_checkpoint["encoder.conv_norm_out.bias"] = vae_state_dict["encoder.norm_out.bias"]
new_checkpoint["decoder.conv_in.weight"] = vae_state_dict["decoder.conv_in.weight"]
new_checkpoint["decoder.conv_in.bias"] = vae_state_dict["decoder.conv_in.bias"]
new_checkpoint["decoder.conv_out.weight"] = vae_state_dict["decoder.conv_out.weight"]
new_checkpoint["decoder.conv_out.bias"] = vae_state_dict["decoder.conv_out.bias"]
new_checkpoint["decoder.conv_norm_out.weight"] = vae_state_dict["decoder.norm_out.weight"]
new_checkpoint["decoder.conv_norm_out.bias"] = vae_state_dict["decoder.norm_out.bias"]
new_checkpoint["quant_conv.weight"] = vae_state_dict["quant_conv.weight"]
new_checkpoint["quant_conv.bias"] = vae_state_dict["quant_conv.bias"]
new_checkpoint["post_quant_conv.weight"] = vae_state_dict["post_quant_conv.weight"]
new_checkpoint["post_quant_conv.bias"] = vae_state_dict["post_quant_conv.bias"]
# Retrieves the keys for the encoder down blocks only
num_down_blocks = len({".".join(layer.split(".")[:3]) for layer in vae_state_dict if "encoder.down" in layer})
down_blocks = {
layer_id: [key for key in vae_state_dict if f"down.{layer_id}" in key] for layer_id in range(num_down_blocks)
}
# Retrieves the keys for the decoder up blocks only
num_up_blocks = len({".".join(layer.split(".")[:3]) for layer in vae_state_dict if "decoder.up" in layer})
up_blocks = {
layer_id: [key for key in vae_state_dict if f"up.{layer_id}" in key] for layer_id in range(num_up_blocks)
}
for i in range(num_down_blocks):
resnets = [key for key in down_blocks[i] if f"down.{i}" in key and f"down.{i}.downsample" not in key]
if f"encoder.down.{i}.downsample.conv.weight" in vae_state_dict:
new_checkpoint[f"encoder.down_blocks.{i}.downsamplers.0.conv.weight"] = vae_state_dict.pop(
f"encoder.down.{i}.downsample.conv.weight"
)
new_checkpoint[f"encoder.down_blocks.{i}.downsamplers.0.conv.bias"] = vae_state_dict.pop(
f"encoder.down.{i}.downsample.conv.bias"
)
paths = renew_vae_resnet_paths(resnets)
meta_path = {"old": f"down.{i}.block", "new": f"down_blocks.{i}.resnets"}
assign_to_checkpoint(
paths,
new_checkpoint,
vae_state_dict,
additional_replacements=[meta_path],
num_head_channels=num_head_channels, # not used in vae
)
mid_resnets = [key for key in vae_state_dict if "encoder.mid.block" in key]
num_mid_res_blocks = 2
for i in range(1, num_mid_res_blocks + 1):
resnets = [key for key in mid_resnets if f"encoder.mid.block_{i}" in key]
paths = renew_vae_resnet_paths(resnets)
meta_path = {"old": f"mid.block_{i}", "new": f"mid_block.resnets.{i - 1}"}
assign_to_checkpoint(
paths,
new_checkpoint,
vae_state_dict,
additional_replacements=[meta_path],
num_head_channels=num_head_channels, # not used in vae
)
mid_attentions = [key for key in vae_state_dict if "encoder.mid.attn" in key]
paths = renew_vae_attention_paths(mid_attentions)
meta_path = {"old": "mid.attn_1", "new": "mid_block.attentions.0"}
assign_to_checkpoint(
paths,
new_checkpoint,
vae_state_dict,
additional_replacements=[meta_path],
num_head_channels=num_head_channels, # not used in vae
)
conv_attn_to_linear(new_checkpoint)
for i in range(num_up_blocks):
block_id = num_up_blocks - 1 - i
resnets = [
key for key in up_blocks[block_id] if f"up.{block_id}" in key and f"up.{block_id}.upsample" not in key
]
if f"decoder.up.{block_id}.upsample.conv.weight" in vae_state_dict:
new_checkpoint[f"decoder.up_blocks.{i}.upsamplers.0.conv.weight"] = vae_state_dict[
f"decoder.up.{block_id}.upsample.conv.weight"
]
new_checkpoint[f"decoder.up_blocks.{i}.upsamplers.0.conv.bias"] = vae_state_dict[
f"decoder.up.{block_id}.upsample.conv.bias"
]
paths = renew_vae_resnet_paths(resnets)
meta_path = {"old": f"up.{block_id}.block", "new": f"up_blocks.{i}.resnets"}
assign_to_checkpoint(
paths,
new_checkpoint,
vae_state_dict,
additional_replacements=[meta_path],
num_head_channels=num_head_channels, # not used in vae
)
mid_resnets = [key for key in vae_state_dict if "decoder.mid.block" in key]
num_mid_res_blocks = 2
for i in range(1, num_mid_res_blocks + 1):
resnets = [key for key in mid_resnets if f"decoder.mid.block_{i}" in key]
paths = renew_vae_resnet_paths(resnets)
meta_path = {"old": f"mid.block_{i}", "new": f"mid_block.resnets.{i - 1}"}
assign_to_checkpoint(
paths,
new_checkpoint,
vae_state_dict,
additional_replacements=[meta_path],
num_head_channels=num_head_channels, # not used in vae
)
mid_attentions = [key for key in vae_state_dict if "decoder.mid.attn" in key]
paths = renew_vae_attention_paths(mid_attentions)
meta_path = {"old": "mid.attn_1", "new": "mid_block.attentions.0"}
assign_to_checkpoint(
paths,
new_checkpoint,
vae_state_dict,
additional_replacements=[meta_path],
num_head_channels=num_head_channels, # not used in vae
)
conv_attn_to_linear(new_checkpoint)
missing_keys, unexpected_keys = diffusers_model.load_state_dict(new_checkpoint)
for missing_key in missing_keys:
print(f"Missing key: {missing_key}")
for unexpected_key in unexpected_keys:
print(f"Unexpected key: {unexpected_key}")
return diffusers_model
def convert_uvit_block_to_diffusers_block(
uvit_state_dict,
new_state_dict,
block_prefix,
new_prefix="transformer.transformer_",
skip_connection=False,
):
"""
Maps the keys in a UniDiffuser transformer block (`Block`) to the keys in a diffusers transformer block
(`UTransformerBlock`/`UniDiffuserBlock`).
"""
prefix = new_prefix + block_prefix
if skip_connection:
new_state_dict[prefix + ".skip.skip_linear.weight"] = uvit_state_dict[block_prefix + ".skip_linear.weight"]
new_state_dict[prefix + ".skip.skip_linear.bias"] = uvit_state_dict[block_prefix + ".skip_linear.bias"]
new_state_dict[prefix + ".skip.norm.weight"] = uvit_state_dict[block_prefix + ".norm1.weight"]
new_state_dict[prefix + ".skip.norm.bias"] = uvit_state_dict[block_prefix + ".norm1.bias"]
# Create the prefix string for out_blocks.
prefix += ".block"
# Split up attention qkv.weight into to_q.weight, to_k.weight, to_v.weight
qkv = uvit_state_dict[block_prefix + ".attn.qkv.weight"]
new_attn_keys = [".attn1.to_q.weight", ".attn1.to_k.weight", ".attn1.to_v.weight"]
new_attn_keys = [prefix + key for key in new_attn_keys]
shape = qkv.shape[0] // len(new_attn_keys)
for i, attn_key in enumerate(new_attn_keys):
new_state_dict[attn_key] = qkv[i * shape : (i + 1) * shape]
new_state_dict[prefix + ".attn1.to_out.0.weight"] = uvit_state_dict[block_prefix + ".attn.proj.weight"]
new_state_dict[prefix + ".attn1.to_out.0.bias"] = uvit_state_dict[block_prefix + ".attn.proj.bias"]
new_state_dict[prefix + ".norm1.weight"] = uvit_state_dict[block_prefix + ".norm2.weight"]
new_state_dict[prefix + ".norm1.bias"] = uvit_state_dict[block_prefix + ".norm2.bias"]
new_state_dict[prefix + ".ff.net.0.proj.weight"] = uvit_state_dict[block_prefix + ".mlp.fc1.weight"]
new_state_dict[prefix + ".ff.net.0.proj.bias"] = uvit_state_dict[block_prefix + ".mlp.fc1.bias"]
new_state_dict[prefix + ".ff.net.2.weight"] = uvit_state_dict[block_prefix + ".mlp.fc2.weight"]
new_state_dict[prefix + ".ff.net.2.bias"] = uvit_state_dict[block_prefix + ".mlp.fc2.bias"]
new_state_dict[prefix + ".norm3.weight"] = uvit_state_dict[block_prefix + ".norm3.weight"]
new_state_dict[prefix + ".norm3.bias"] = uvit_state_dict[block_prefix + ".norm3.bias"]
return uvit_state_dict, new_state_dict
def convert_uvit_to_diffusers(ckpt, diffusers_model):
"""
Converts a UniDiffuser uvit_v*.pth checkpoint to a diffusers UniDiffusersModel.
"""
# uvit_v*.pth ckpt is a torch state dict
uvit_state_dict = torch.load(ckpt, map_location="cpu")
new_state_dict = {}
# Input layers
new_state_dict["vae_img_in.proj.weight"] = uvit_state_dict["patch_embed.proj.weight"]
new_state_dict["vae_img_in.proj.bias"] = uvit_state_dict["patch_embed.proj.bias"]
new_state_dict["clip_img_in.weight"] = uvit_state_dict["clip_img_embed.weight"]
new_state_dict["clip_img_in.bias"] = uvit_state_dict["clip_img_embed.bias"]
new_state_dict["text_in.weight"] = uvit_state_dict["text_embed.weight"]
new_state_dict["text_in.bias"] = uvit_state_dict["text_embed.bias"]
new_state_dict["pos_embed"] = uvit_state_dict["pos_embed"]
# Handle data type token embeddings for UniDiffuser-v1
if "token_embedding.weight" in uvit_state_dict and diffusers_model.use_data_type_embedding:
new_state_dict["data_type_pos_embed_token"] = uvit_state_dict["pos_embed_token"]
new_state_dict["data_type_token_embedding.weight"] = uvit_state_dict["token_embedding.weight"]
# Also initialize the PatchEmbedding in UTransformer2DModel with the PatchEmbedding from the checkpoint.
# This isn't used in the current implementation, so might want to remove.
new_state_dict["transformer.pos_embed.proj.weight"] = uvit_state_dict["patch_embed.proj.weight"]
new_state_dict["transformer.pos_embed.proj.bias"] = uvit_state_dict["patch_embed.proj.bias"]
# Output layers
new_state_dict["transformer.norm_out.weight"] = uvit_state_dict["norm.weight"]
new_state_dict["transformer.norm_out.bias"] = uvit_state_dict["norm.bias"]
new_state_dict["vae_img_out.weight"] = uvit_state_dict["decoder_pred.weight"]
new_state_dict["vae_img_out.bias"] = uvit_state_dict["decoder_pred.bias"]
new_state_dict["clip_img_out.weight"] = uvit_state_dict["clip_img_out.weight"]
new_state_dict["clip_img_out.bias"] = uvit_state_dict["clip_img_out.bias"]
new_state_dict["text_out.weight"] = uvit_state_dict["text_out.weight"]
new_state_dict["text_out.bias"] = uvit_state_dict["text_out.bias"]
# in_blocks
in_blocks_prefixes = {".".join(layer.split(".")[:2]) for layer in uvit_state_dict if "in_blocks" in layer}
for in_block_prefix in list(in_blocks_prefixes):
convert_uvit_block_to_diffusers_block(uvit_state_dict, new_state_dict, in_block_prefix)
# mid_block
# Assume there's only one mid block
convert_uvit_block_to_diffusers_block(uvit_state_dict, new_state_dict, "mid_block")
# out_blocks
out_blocks_prefixes = {".".join(layer.split(".")[:2]) for layer in uvit_state_dict if "out_blocks" in layer}
for out_block_prefix in list(out_blocks_prefixes):
convert_uvit_block_to_diffusers_block(uvit_state_dict, new_state_dict, out_block_prefix, skip_connection=True)
missing_keys, unexpected_keys = diffusers_model.load_state_dict(new_state_dict)
for missing_key in missing_keys:
print(f"Missing key: {missing_key}")
for unexpected_key in unexpected_keys:
print(f"Unexpected key: {unexpected_key}")
return diffusers_model
def convert_caption_decoder_to_diffusers(ckpt, diffusers_model):
"""
Converts a UniDiffuser caption_decoder.pth checkpoint to a diffusers UniDiffuserTextDecoder.
"""
# caption_decoder.pth ckpt is a torch state dict
checkpoint_state_dict = torch.load(ckpt, map_location="cpu")
decoder_state_dict = {}
# Remove the "module." prefix, if necessary
caption_decoder_key = "module."
for key in checkpoint_state_dict:
if key.startswith(caption_decoder_key):
decoder_state_dict[key.replace(caption_decoder_key, "")] = checkpoint_state_dict.get(key)
else:
decoder_state_dict[key] = checkpoint_state_dict.get(key)
new_state_dict = {}
# Encoder and Decoder
new_state_dict["encode_prefix.weight"] = decoder_state_dict["encode_prefix.weight"]
new_state_dict["encode_prefix.bias"] = decoder_state_dict["encode_prefix.bias"]
new_state_dict["decode_prefix.weight"] = decoder_state_dict["decode_prefix.weight"]
new_state_dict["decode_prefix.bias"] = decoder_state_dict["decode_prefix.bias"]
# Internal GPT2LMHeadModel transformer model
for key, val in decoder_state_dict.items():
if key.startswith("gpt"):
suffix = key[len("gpt") :]
new_state_dict["transformer" + suffix] = val
missing_keys, unexpected_keys = diffusers_model.load_state_dict(new_state_dict)
for missing_key in missing_keys:
print(f"Missing key: {missing_key}")
for unexpected_key in unexpected_keys:
print(f"Unexpected key: {unexpected_key}")
return diffusers_model
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--caption_decoder_checkpoint_path",
default=None,
type=str,
required=False,
help="Path to caption decoder checkpoint to convert.",
)
parser.add_argument(
"--uvit_checkpoint_path", default=None, type=str, required=False, help="Path to U-ViT checkpoint to convert."
)
parser.add_argument(
"--vae_checkpoint_path",
default=None,
type=str,
required=False,
help="Path to VAE checkpoint to convert.",
)
parser.add_argument(
"--pipeline_output_path",
default=None,
type=str,
required=True,
help="Path to save the output pipeline to.",
)
parser.add_argument(
"--config_type",
default="test",
type=str,
help=(
"Config type to use. Should be 'test' to create small models for testing or 'big' to convert a full"
" checkpoint."
),
)
parser.add_argument(
"--version",
default=0,
type=int,
help="The UniDiffuser model type to convert to. Should be 0 for UniDiffuser-v0 and 1 for UniDiffuser-v1.",
)
parser.add_argument(
"--safe_serialization",
action="store_true",
help="Whether to use safetensors/safe seialization when saving the pipeline.",
)
args = parser.parse_args()
# Convert the VAE model.
if args.vae_checkpoint_path is not None:
vae_config = create_vae_diffusers_config(args.config_type)
vae = AutoencoderKL(**vae_config)
vae = convert_vae_to_diffusers(args.vae_checkpoint_path, vae)
# Convert the U-ViT ("unet") model.
if args.uvit_checkpoint_path is not None:
unet_config = create_unidiffuser_unet_config(args.config_type, args.version)
unet = UniDiffuserModel(**unet_config)
unet = convert_uvit_to_diffusers(args.uvit_checkpoint_path, unet)
# Convert the caption decoder ("text_decoder") model.
if args.caption_decoder_checkpoint_path is not None:
text_decoder_config = create_text_decoder_config(args.config_type)
text_decoder = UniDiffuserTextDecoder(**text_decoder_config)
text_decoder = convert_caption_decoder_to_diffusers(args.caption_decoder_checkpoint_path, text_decoder)
# Scheduler is the same for both the test and big models.
scheduler_config = SCHEDULER_CONFIG
scheduler = DPMSolverMultistepScheduler(
beta_start=scheduler_config.beta_start,
beta_end=scheduler_config.beta_end,
beta_schedule=scheduler_config.beta_schedule,
solver_order=scheduler_config.solver_order,
)
if args.config_type == "test":
# Make a small random CLIPTextModel
torch.manual_seed(0)
clip_text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
)
text_encoder = CLIPTextModel(clip_text_encoder_config)
clip_tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
# Make a small random CLIPVisionModel and accompanying CLIPImageProcessor
torch.manual_seed(0)
clip_image_encoder_config = CLIPVisionConfig(
image_size=32,
patch_size=2,
num_channels=3,
hidden_size=32,
projection_dim=32,
num_hidden_layers=5,
num_attention_heads=4,
intermediate_size=37,
dropout=0.1,
attention_dropout=0.1,
initializer_range=0.02,
)
image_encoder = CLIPVisionModelWithProjection(clip_image_encoder_config)
image_processor = CLIPImageProcessor(crop_size=32, size=32)
# Note that the text_decoder should already have its token embeddings resized.
text_tokenizer = GPT2Tokenizer.from_pretrained("hf-internal-testing/tiny-random-GPT2Model")
eos = "<|EOS|>"
special_tokens_dict = {"eos_token": eos}
text_tokenizer.add_special_tokens(special_tokens_dict)
elif args.config_type == "big":
text_encoder = CLIPTextModel.from_pretrained("openai/clip-vit-large-patch14")
clip_tokenizer = CLIPTokenizer.from_pretrained("openai/clip-vit-large-patch14")
image_encoder = CLIPVisionModelWithProjection.from_pretrained("openai/clip-vit-base-patch32")
image_processor = CLIPImageProcessor.from_pretrained("openai/clip-vit-base-patch32")
# Note that the text_decoder should already have its token embeddings resized.
text_tokenizer = GPT2Tokenizer.from_pretrained("gpt2")
eos = "<|EOS|>"
special_tokens_dict = {"eos_token": eos}
text_tokenizer.add_special_tokens(special_tokens_dict)
else:
raise NotImplementedError(
f"Config type {args.config_type} is not implemented, currently only config types"
" 'test' and 'big' are available."
)
pipeline = UniDiffuserPipeline(
vae=vae,
text_encoder=text_encoder,
image_encoder=image_encoder,
clip_image_processor=image_processor,
clip_tokenizer=clip_tokenizer,
text_decoder=text_decoder,
text_tokenizer=text_tokenizer,
unet=unet,
scheduler=scheduler,
)
pipeline.save_pretrained(args.pipeline_output_path, safe_serialization=args.safe_serialization)
|
diffusers/scripts/convert_unidiffuser_to_diffusers.py/0
|
{
"file_path": "diffusers/scripts/convert_unidiffuser_to_diffusers.py",
"repo_id": "diffusers",
"token_count": 13871
}
| 120
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Dict, List, Optional, Union
import safetensors
import torch
from huggingface_hub.utils import validate_hf_hub_args
from torch import nn
from ..models.modeling_utils import load_state_dict
from ..utils import _get_model_file, is_accelerate_available, is_transformers_available, logging
if is_transformers_available():
from transformers import PreTrainedModel, PreTrainedTokenizer
if is_accelerate_available():
from accelerate.hooks import AlignDevicesHook, CpuOffload, remove_hook_from_module
logger = logging.get_logger(__name__)
TEXT_INVERSION_NAME = "learned_embeds.bin"
TEXT_INVERSION_NAME_SAFE = "learned_embeds.safetensors"
@validate_hf_hub_args
def load_textual_inversion_state_dicts(pretrained_model_name_or_paths, **kwargs):
cache_dir = kwargs.pop("cache_dir", None)
force_download = kwargs.pop("force_download", False)
proxies = kwargs.pop("proxies", None)
local_files_only = kwargs.pop("local_files_only", None)
token = kwargs.pop("token", None)
revision = kwargs.pop("revision", None)
subfolder = kwargs.pop("subfolder", None)
weight_name = kwargs.pop("weight_name", None)
use_safetensors = kwargs.pop("use_safetensors", None)
allow_pickle = False
if use_safetensors is None:
use_safetensors = True
allow_pickle = True
user_agent = {
"file_type": "text_inversion",
"framework": "pytorch",
}
state_dicts = []
for pretrained_model_name_or_path in pretrained_model_name_or_paths:
if not isinstance(pretrained_model_name_or_path, (dict, torch.Tensor)):
# 3.1. Load textual inversion file
model_file = None
# Let's first try to load .safetensors weights
if (use_safetensors and weight_name is None) or (
weight_name is not None and weight_name.endswith(".safetensors")
):
try:
model_file = _get_model_file(
pretrained_model_name_or_path,
weights_name=weight_name or TEXT_INVERSION_NAME_SAFE,
cache_dir=cache_dir,
force_download=force_download,
proxies=proxies,
local_files_only=local_files_only,
token=token,
revision=revision,
subfolder=subfolder,
user_agent=user_agent,
)
state_dict = safetensors.torch.load_file(model_file, device="cpu")
except Exception as e:
if not allow_pickle:
raise e
model_file = None
if model_file is None:
model_file = _get_model_file(
pretrained_model_name_or_path,
weights_name=weight_name or TEXT_INVERSION_NAME,
cache_dir=cache_dir,
force_download=force_download,
proxies=proxies,
local_files_only=local_files_only,
token=token,
revision=revision,
subfolder=subfolder,
user_agent=user_agent,
)
state_dict = load_state_dict(model_file)
else:
state_dict = pretrained_model_name_or_path
state_dicts.append(state_dict)
return state_dicts
class TextualInversionLoaderMixin:
r"""
Load Textual Inversion tokens and embeddings to the tokenizer and text encoder.
"""
def maybe_convert_prompt(self, prompt: Union[str, List[str]], tokenizer: "PreTrainedTokenizer"): # noqa: F821
r"""
Processes prompts that include a special token corresponding to a multi-vector textual inversion embedding to
be replaced with multiple special tokens each corresponding to one of the vectors. If the prompt has no textual
inversion token or if the textual inversion token is a single vector, the input prompt is returned.
Parameters:
prompt (`str` or list of `str`):
The prompt or prompts to guide the image generation.
tokenizer (`PreTrainedTokenizer`):
The tokenizer responsible for encoding the prompt into input tokens.
Returns:
`str` or list of `str`: The converted prompt
"""
if not isinstance(prompt, List):
prompts = [prompt]
else:
prompts = prompt
prompts = [self._maybe_convert_prompt(p, tokenizer) for p in prompts]
if not isinstance(prompt, List):
return prompts[0]
return prompts
def _maybe_convert_prompt(self, prompt: str, tokenizer: "PreTrainedTokenizer"): # noqa: F821
r"""
Maybe convert a prompt into a "multi vector"-compatible prompt. If the prompt includes a token that corresponds
to a multi-vector textual inversion embedding, this function will process the prompt so that the special token
is replaced with multiple special tokens each corresponding to one of the vectors. If the prompt has no textual
inversion token or a textual inversion token that is a single vector, the input prompt is simply returned.
Parameters:
prompt (`str`):
The prompt to guide the image generation.
tokenizer (`PreTrainedTokenizer`):
The tokenizer responsible for encoding the prompt into input tokens.
Returns:
`str`: The converted prompt
"""
tokens = tokenizer.tokenize(prompt)
unique_tokens = set(tokens)
for token in unique_tokens:
if token in tokenizer.added_tokens_encoder:
replacement = token
i = 1
while f"{token}_{i}" in tokenizer.added_tokens_encoder:
replacement += f" {token}_{i}"
i += 1
prompt = prompt.replace(token, replacement)
return prompt
def _check_text_inv_inputs(self, tokenizer, text_encoder, pretrained_model_name_or_paths, tokens):
if tokenizer is None:
raise ValueError(
f"{self.__class__.__name__} requires `self.tokenizer` or passing a `tokenizer` of type `PreTrainedTokenizer` for calling"
f" `{self.load_textual_inversion.__name__}`"
)
if text_encoder is None:
raise ValueError(
f"{self.__class__.__name__} requires `self.text_encoder` or passing a `text_encoder` of type `PreTrainedModel` for calling"
f" `{self.load_textual_inversion.__name__}`"
)
if len(pretrained_model_name_or_paths) > 1 and len(pretrained_model_name_or_paths) != len(tokens):
raise ValueError(
f"You have passed a list of models of length {len(pretrained_model_name_or_paths)}, and list of tokens of length {len(tokens)} "
f"Make sure both lists have the same length."
)
valid_tokens = [t for t in tokens if t is not None]
if len(set(valid_tokens)) < len(valid_tokens):
raise ValueError(f"You have passed a list of tokens that contains duplicates: {tokens}")
@staticmethod
def _retrieve_tokens_and_embeddings(tokens, state_dicts, tokenizer):
all_tokens = []
all_embeddings = []
for state_dict, token in zip(state_dicts, tokens):
if isinstance(state_dict, torch.Tensor):
if token is None:
raise ValueError(
"You are trying to load a textual inversion embedding that has been saved as a PyTorch tensor. Make sure to pass the name of the corresponding token in this case: `token=...`."
)
loaded_token = token
embedding = state_dict
elif len(state_dict) == 1:
# diffusers
loaded_token, embedding = next(iter(state_dict.items()))
elif "string_to_param" in state_dict:
# A1111
loaded_token = state_dict["name"]
embedding = state_dict["string_to_param"]["*"]
else:
raise ValueError(
f"Loaded state dictionary is incorrect: {state_dict}. \n\n"
"Please verify that the loaded state dictionary of the textual embedding either only has a single key or includes the `string_to_param`"
" input key."
)
if token is not None and loaded_token != token:
logger.info(f"The loaded token: {loaded_token} is overwritten by the passed token {token}.")
else:
token = loaded_token
if token in tokenizer.get_vocab():
raise ValueError(
f"Token {token} already in tokenizer vocabulary. Please choose a different token name or remove {token} and embedding from the tokenizer and text encoder."
)
all_tokens.append(token)
all_embeddings.append(embedding)
return all_tokens, all_embeddings
@staticmethod
def _extend_tokens_and_embeddings(tokens, embeddings, tokenizer):
all_tokens = []
all_embeddings = []
for embedding, token in zip(embeddings, tokens):
if f"{token}_1" in tokenizer.get_vocab():
multi_vector_tokens = [token]
i = 1
while f"{token}_{i}" in tokenizer.added_tokens_encoder:
multi_vector_tokens.append(f"{token}_{i}")
i += 1
raise ValueError(
f"Multi-vector Token {multi_vector_tokens} already in tokenizer vocabulary. Please choose a different token name or remove the {multi_vector_tokens} and embedding from the tokenizer and text encoder."
)
is_multi_vector = len(embedding.shape) > 1 and embedding.shape[0] > 1
if is_multi_vector:
all_tokens += [token] + [f"{token}_{i}" for i in range(1, embedding.shape[0])]
all_embeddings += [e for e in embedding] # noqa: C416
else:
all_tokens += [token]
all_embeddings += [embedding[0]] if len(embedding.shape) > 1 else [embedding]
return all_tokens, all_embeddings
@validate_hf_hub_args
def load_textual_inversion(
self,
pretrained_model_name_or_path: Union[str, List[str], Dict[str, torch.Tensor], List[Dict[str, torch.Tensor]]],
token: Optional[Union[str, List[str]]] = None,
tokenizer: Optional["PreTrainedTokenizer"] = None, # noqa: F821
text_encoder: Optional["PreTrainedModel"] = None, # noqa: F821
**kwargs,
):
r"""
Load Textual Inversion embeddings into the text encoder of [`StableDiffusionPipeline`] (both 🤗 Diffusers and
Automatic1111 formats are supported).
Parameters:
pretrained_model_name_or_path (`str` or `os.PathLike` or `List[str or os.PathLike]` or `Dict` or `List[Dict]`):
Can be either one of the following or a list of them:
- A string, the *model id* (for example `sd-concepts-library/low-poly-hd-logos-icons`) of a
pretrained model hosted on the Hub.
- A path to a *directory* (for example `./my_text_inversion_directory/`) containing the textual
inversion weights.
- A path to a *file* (for example `./my_text_inversions.pt`) containing textual inversion weights.
- A [torch state
dict](https://pytorch.org/tutorials/beginner/saving_loading_models.html#what-is-a-state-dict).
token (`str` or `List[str]`, *optional*):
Override the token to use for the textual inversion weights. If `pretrained_model_name_or_path` is a
list, then `token` must also be a list of equal length.
text_encoder ([`~transformers.CLIPTextModel`], *optional*):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
If not specified, function will take self.tokenizer.
tokenizer ([`~transformers.CLIPTokenizer`], *optional*):
A `CLIPTokenizer` to tokenize text. If not specified, function will take self.tokenizer.
weight_name (`str`, *optional*):
Name of a custom weight file. This should be used when:
- The saved textual inversion file is in 🤗 Diffusers format, but was saved under a specific weight
name such as `text_inv.bin`.
- The saved textual inversion file is in the Automatic1111 format.
cache_dir (`Union[str, os.PathLike]`, *optional*):
Path to a directory where a downloaded pretrained model configuration is cached if the standard cache
is not used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force the (re-)download of the model weights and configuration files, overriding the
cached versions if they exist.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, for example, `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}`. The proxies are used on each request.
local_files_only (`bool`, *optional*, defaults to `False`):
Whether to only load local model weights and configuration files or not. If set to `True`, the model
won't be downloaded from the Hub.
token (`str` or *bool*, *optional*):
The token to use as HTTP bearer authorization for remote files. If `True`, the token generated from
`diffusers-cli login` (stored in `~/.huggingface`) is used.
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, a commit id, or any identifier
allowed by Git.
subfolder (`str`, *optional*, defaults to `""`):
The subfolder location of a model file within a larger model repository on the Hub or locally.
mirror (`str`, *optional*):
Mirror source to resolve accessibility issues if you're downloading a model in China. We do not
guarantee the timeliness or safety of the source, and you should refer to the mirror site for more
information.
Example:
To load a Textual Inversion embedding vector in 🤗 Diffusers format:
```py
from diffusers import StableDiffusionPipeline
import torch
model_id = "runwayml/stable-diffusion-v1-5"
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
pipe.load_textual_inversion("sd-concepts-library/cat-toy")
prompt = "A <cat-toy> backpack"
image = pipe(prompt, num_inference_steps=50).images[0]
image.save("cat-backpack.png")
```
To load a Textual Inversion embedding vector in Automatic1111 format, make sure to download the vector first
(for example from [civitAI](https://civitai.com/models/3036?modelVersionId=9857)) and then load the vector
locally:
```py
from diffusers import StableDiffusionPipeline
import torch
model_id = "runwayml/stable-diffusion-v1-5"
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
pipe.load_textual_inversion("./charturnerv2.pt", token="charturnerv2")
prompt = "charturnerv2, multiple views of the same character in the same outfit, a character turnaround of a woman wearing a black jacket and red shirt, best quality, intricate details."
image = pipe(prompt, num_inference_steps=50).images[0]
image.save("character.png")
```
"""
# 1. Set correct tokenizer and text encoder
tokenizer = tokenizer or getattr(self, "tokenizer", None)
text_encoder = text_encoder or getattr(self, "text_encoder", None)
# 2. Normalize inputs
pretrained_model_name_or_paths = (
[pretrained_model_name_or_path]
if not isinstance(pretrained_model_name_or_path, list)
else pretrained_model_name_or_path
)
tokens = [token] if not isinstance(token, list) else token
if tokens[0] is None:
tokens = tokens * len(pretrained_model_name_or_paths)
# 3. Check inputs
self._check_text_inv_inputs(tokenizer, text_encoder, pretrained_model_name_or_paths, tokens)
# 4. Load state dicts of textual embeddings
state_dicts = load_textual_inversion_state_dicts(pretrained_model_name_or_paths, **kwargs)
# 4.1 Handle the special case when state_dict is a tensor that contains n embeddings for n tokens
if len(tokens) > 1 and len(state_dicts) == 1:
if isinstance(state_dicts[0], torch.Tensor):
state_dicts = list(state_dicts[0])
if len(tokens) != len(state_dicts):
raise ValueError(
f"You have passed a state_dict contains {len(state_dicts)} embeddings, and list of tokens of length {len(tokens)} "
f"Make sure both have the same length."
)
# 4. Retrieve tokens and embeddings
tokens, embeddings = self._retrieve_tokens_and_embeddings(tokens, state_dicts, tokenizer)
# 5. Extend tokens and embeddings for multi vector
tokens, embeddings = self._extend_tokens_and_embeddings(tokens, embeddings, tokenizer)
# 6. Make sure all embeddings have the correct size
expected_emb_dim = text_encoder.get_input_embeddings().weight.shape[-1]
if any(expected_emb_dim != emb.shape[-1] for emb in embeddings):
raise ValueError(
"Loaded embeddings are of incorrect shape. Expected each textual inversion embedding "
"to be of shape {input_embeddings.shape[-1]}, but are {embeddings.shape[-1]} "
)
# 7. Now we can be sure that loading the embedding matrix works
# < Unsafe code:
# 7.1 Offload all hooks in case the pipeline was cpu offloaded before make sure, we offload and onload again
is_model_cpu_offload = False
is_sequential_cpu_offload = False
if self.hf_device_map is None:
for _, component in self.components.items():
if isinstance(component, nn.Module):
if hasattr(component, "_hf_hook"):
is_model_cpu_offload = isinstance(getattr(component, "_hf_hook"), CpuOffload)
is_sequential_cpu_offload = (
isinstance(getattr(component, "_hf_hook"), AlignDevicesHook)
or hasattr(component._hf_hook, "hooks")
and isinstance(component._hf_hook.hooks[0], AlignDevicesHook)
)
logger.info(
"Accelerate hooks detected. Since you have called `load_textual_inversion()`, the previous hooks will be first removed. Then the textual inversion parameters will be loaded and the hooks will be applied again."
)
remove_hook_from_module(component, recurse=is_sequential_cpu_offload)
# 7.2 save expected device and dtype
device = text_encoder.device
dtype = text_encoder.dtype
# 7.3 Increase token embedding matrix
text_encoder.resize_token_embeddings(len(tokenizer) + len(tokens))
input_embeddings = text_encoder.get_input_embeddings().weight
# 7.4 Load token and embedding
for token, embedding in zip(tokens, embeddings):
# add tokens and get ids
tokenizer.add_tokens(token)
token_id = tokenizer.convert_tokens_to_ids(token)
input_embeddings.data[token_id] = embedding
logger.info(f"Loaded textual inversion embedding for {token}.")
input_embeddings.to(dtype=dtype, device=device)
# 7.5 Offload the model again
if is_model_cpu_offload:
self.enable_model_cpu_offload()
elif is_sequential_cpu_offload:
self.enable_sequential_cpu_offload()
# / Unsafe Code >
def unload_textual_inversion(
self,
tokens: Optional[Union[str, List[str]]] = None,
tokenizer: Optional["PreTrainedTokenizer"] = None,
text_encoder: Optional["PreTrainedModel"] = None,
):
r"""
Unload Textual Inversion embeddings from the text encoder of [`StableDiffusionPipeline`]
Example:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("runwayml/stable-diffusion-v1-5")
# Example 1
pipeline.load_textual_inversion("sd-concepts-library/gta5-artwork")
pipeline.load_textual_inversion("sd-concepts-library/moeb-style")
# Remove all token embeddings
pipeline.unload_textual_inversion()
# Example 2
pipeline.load_textual_inversion("sd-concepts-library/moeb-style")
pipeline.load_textual_inversion("sd-concepts-library/gta5-artwork")
# Remove just one token
pipeline.unload_textual_inversion("<moe-bius>")
# Example 3: unload from SDXL
pipeline = AutoPipelineForText2Image.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
embedding_path = hf_hub_download(
repo_id="linoyts/web_y2k", filename="web_y2k_emb.safetensors", repo_type="model"
)
# load embeddings to the text encoders
state_dict = load_file(embedding_path)
# load embeddings of text_encoder 1 (CLIP ViT-L/14)
pipeline.load_textual_inversion(
state_dict["clip_l"],
token=["<s0>", "<s1>"],
text_encoder=pipeline.text_encoder,
tokenizer=pipeline.tokenizer,
)
# load embeddings of text_encoder 2 (CLIP ViT-G/14)
pipeline.load_textual_inversion(
state_dict["clip_g"],
token=["<s0>", "<s1>"],
text_encoder=pipeline.text_encoder_2,
tokenizer=pipeline.tokenizer_2,
)
# Unload explicitly from both text encoders abd tokenizers
pipeline.unload_textual_inversion(
tokens=["<s0>", "<s1>"], text_encoder=pipeline.text_encoder, tokenizer=pipeline.tokenizer
)
pipeline.unload_textual_inversion(
tokens=["<s0>", "<s1>"], text_encoder=pipeline.text_encoder_2, tokenizer=pipeline.tokenizer_2
)
```
"""
tokenizer = tokenizer or getattr(self, "tokenizer", None)
text_encoder = text_encoder or getattr(self, "text_encoder", None)
# Get textual inversion tokens and ids
token_ids = []
last_special_token_id = None
if tokens:
if isinstance(tokens, str):
tokens = [tokens]
for added_token_id, added_token in tokenizer.added_tokens_decoder.items():
if not added_token.special:
if added_token.content in tokens:
token_ids.append(added_token_id)
else:
last_special_token_id = added_token_id
if len(token_ids) == 0:
raise ValueError("No tokens to remove found")
else:
tokens = []
for added_token_id, added_token in tokenizer.added_tokens_decoder.items():
if not added_token.special:
token_ids.append(added_token_id)
tokens.append(added_token.content)
else:
last_special_token_id = added_token_id
# Delete from tokenizer
for token_id, token_to_remove in zip(token_ids, tokens):
del tokenizer._added_tokens_decoder[token_id]
del tokenizer._added_tokens_encoder[token_to_remove]
# Make all token ids sequential in tokenizer
key_id = 1
for token_id in tokenizer.added_tokens_decoder:
if token_id > last_special_token_id and token_id > last_special_token_id + key_id:
token = tokenizer._added_tokens_decoder[token_id]
tokenizer._added_tokens_decoder[last_special_token_id + key_id] = token
del tokenizer._added_tokens_decoder[token_id]
tokenizer._added_tokens_encoder[token.content] = last_special_token_id + key_id
key_id += 1
tokenizer._update_trie()
# Delete from text encoder
text_embedding_dim = text_encoder.get_input_embeddings().embedding_dim
temp_text_embedding_weights = text_encoder.get_input_embeddings().weight
text_embedding_weights = temp_text_embedding_weights[: last_special_token_id + 1]
to_append = []
for i in range(last_special_token_id + 1, temp_text_embedding_weights.shape[0]):
if i not in token_ids:
to_append.append(temp_text_embedding_weights[i].unsqueeze(0))
if len(to_append) > 0:
to_append = torch.cat(to_append, dim=0)
text_embedding_weights = torch.cat([text_embedding_weights, to_append], dim=0)
text_embeddings_filtered = nn.Embedding(text_embedding_weights.shape[0], text_embedding_dim)
text_embeddings_filtered.weight.data = text_embedding_weights
text_encoder.set_input_embeddings(text_embeddings_filtered)
|
diffusers/src/diffusers/loaders/textual_inversion.py/0
|
{
"file_path": "diffusers/src/diffusers/loaders/textual_inversion.py",
"repo_id": "diffusers",
"token_count": 12007
}
| 121
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
from dataclasses import dataclass
from typing import Optional, Tuple, Union
import numpy as np
import torch
import torch.nn as nn
from torch.nn.utils import weight_norm
from ...configuration_utils import ConfigMixin, register_to_config
from ...utils import BaseOutput
from ...utils.accelerate_utils import apply_forward_hook
from ...utils.torch_utils import randn_tensor
from ..modeling_utils import ModelMixin
class Snake1d(nn.Module):
"""
A 1-dimensional Snake activation function module.
"""
def __init__(self, hidden_dim, logscale=True):
super().__init__()
self.alpha = nn.Parameter(torch.zeros(1, hidden_dim, 1))
self.beta = nn.Parameter(torch.zeros(1, hidden_dim, 1))
self.alpha.requires_grad = True
self.beta.requires_grad = True
self.logscale = logscale
def forward(self, hidden_states):
shape = hidden_states.shape
alpha = self.alpha if not self.logscale else torch.exp(self.alpha)
beta = self.beta if not self.logscale else torch.exp(self.beta)
hidden_states = hidden_states.reshape(shape[0], shape[1], -1)
hidden_states = hidden_states + (beta + 1e-9).reciprocal() * torch.sin(alpha * hidden_states).pow(2)
hidden_states = hidden_states.reshape(shape)
return hidden_states
class OobleckResidualUnit(nn.Module):
"""
A residual unit composed of Snake1d and weight-normalized Conv1d layers with dilations.
"""
def __init__(self, dimension: int = 16, dilation: int = 1):
super().__init__()
pad = ((7 - 1) * dilation) // 2
self.snake1 = Snake1d(dimension)
self.conv1 = weight_norm(nn.Conv1d(dimension, dimension, kernel_size=7, dilation=dilation, padding=pad))
self.snake2 = Snake1d(dimension)
self.conv2 = weight_norm(nn.Conv1d(dimension, dimension, kernel_size=1))
def forward(self, hidden_state):
"""
Forward pass through the residual unit.
Args:
hidden_state (`torch.Tensor` of shape `(batch_size, channels, time_steps)`):
Input tensor .
Returns:
output_tensor (`torch.Tensor` of shape `(batch_size, channels, time_steps)`)
Input tensor after passing through the residual unit.
"""
output_tensor = hidden_state
output_tensor = self.conv1(self.snake1(output_tensor))
output_tensor = self.conv2(self.snake2(output_tensor))
padding = (hidden_state.shape[-1] - output_tensor.shape[-1]) // 2
if padding > 0:
hidden_state = hidden_state[..., padding:-padding]
output_tensor = hidden_state + output_tensor
return output_tensor
class OobleckEncoderBlock(nn.Module):
"""Encoder block used in Oobleck encoder."""
def __init__(self, input_dim, output_dim, stride: int = 1):
super().__init__()
self.res_unit1 = OobleckResidualUnit(input_dim, dilation=1)
self.res_unit2 = OobleckResidualUnit(input_dim, dilation=3)
self.res_unit3 = OobleckResidualUnit(input_dim, dilation=9)
self.snake1 = Snake1d(input_dim)
self.conv1 = weight_norm(
nn.Conv1d(input_dim, output_dim, kernel_size=2 * stride, stride=stride, padding=math.ceil(stride / 2))
)
def forward(self, hidden_state):
hidden_state = self.res_unit1(hidden_state)
hidden_state = self.res_unit2(hidden_state)
hidden_state = self.snake1(self.res_unit3(hidden_state))
hidden_state = self.conv1(hidden_state)
return hidden_state
class OobleckDecoderBlock(nn.Module):
"""Decoder block used in Oobleck decoder."""
def __init__(self, input_dim, output_dim, stride: int = 1):
super().__init__()
self.snake1 = Snake1d(input_dim)
self.conv_t1 = weight_norm(
nn.ConvTranspose1d(
input_dim,
output_dim,
kernel_size=2 * stride,
stride=stride,
padding=math.ceil(stride / 2),
)
)
self.res_unit1 = OobleckResidualUnit(output_dim, dilation=1)
self.res_unit2 = OobleckResidualUnit(output_dim, dilation=3)
self.res_unit3 = OobleckResidualUnit(output_dim, dilation=9)
def forward(self, hidden_state):
hidden_state = self.snake1(hidden_state)
hidden_state = self.conv_t1(hidden_state)
hidden_state = self.res_unit1(hidden_state)
hidden_state = self.res_unit2(hidden_state)
hidden_state = self.res_unit3(hidden_state)
return hidden_state
class OobleckDiagonalGaussianDistribution(object):
def __init__(self, parameters: torch.Tensor, deterministic: bool = False):
self.parameters = parameters
self.mean, self.scale = parameters.chunk(2, dim=1)
self.std = nn.functional.softplus(self.scale) + 1e-4
self.var = self.std * self.std
self.logvar = torch.log(self.var)
self.deterministic = deterministic
def sample(self, generator: Optional[torch.Generator] = None) -> torch.Tensor:
# make sure sample is on the same device as the parameters and has same dtype
sample = randn_tensor(
self.mean.shape,
generator=generator,
device=self.parameters.device,
dtype=self.parameters.dtype,
)
x = self.mean + self.std * sample
return x
def kl(self, other: "OobleckDiagonalGaussianDistribution" = None) -> torch.Tensor:
if self.deterministic:
return torch.Tensor([0.0])
else:
if other is None:
return (self.mean * self.mean + self.var - self.logvar - 1.0).sum(1).mean()
else:
normalized_diff = torch.pow(self.mean - other.mean, 2) / other.var
var_ratio = self.var / other.var
logvar_diff = self.logvar - other.logvar
kl = normalized_diff + var_ratio + logvar_diff - 1
kl = kl.sum(1).mean()
return kl
def mode(self) -> torch.Tensor:
return self.mean
@dataclass
class AutoencoderOobleckOutput(BaseOutput):
"""
Output of AutoencoderOobleck encoding method.
Args:
latent_dist (`OobleckDiagonalGaussianDistribution`):
Encoded outputs of `Encoder` represented as the mean and standard deviation of
`OobleckDiagonalGaussianDistribution`. `OobleckDiagonalGaussianDistribution` allows for sampling latents
from the distribution.
"""
latent_dist: "OobleckDiagonalGaussianDistribution" # noqa: F821
@dataclass
class OobleckDecoderOutput(BaseOutput):
r"""
Output of decoding method.
Args:
sample (`torch.Tensor` of shape `(batch_size, audio_channels, sequence_length)`):
The decoded output sample from the last layer of the model.
"""
sample: torch.Tensor
class OobleckEncoder(nn.Module):
"""Oobleck Encoder"""
def __init__(self, encoder_hidden_size, audio_channels, downsampling_ratios, channel_multiples):
super().__init__()
strides = downsampling_ratios
channel_multiples = [1] + channel_multiples
# Create first convolution
self.conv1 = weight_norm(nn.Conv1d(audio_channels, encoder_hidden_size, kernel_size=7, padding=3))
self.block = []
# Create EncoderBlocks that double channels as they downsample by `stride`
for stride_index, stride in enumerate(strides):
self.block += [
OobleckEncoderBlock(
input_dim=encoder_hidden_size * channel_multiples[stride_index],
output_dim=encoder_hidden_size * channel_multiples[stride_index + 1],
stride=stride,
)
]
self.block = nn.ModuleList(self.block)
d_model = encoder_hidden_size * channel_multiples[-1]
self.snake1 = Snake1d(d_model)
self.conv2 = weight_norm(nn.Conv1d(d_model, encoder_hidden_size, kernel_size=3, padding=1))
def forward(self, hidden_state):
hidden_state = self.conv1(hidden_state)
for module in self.block:
hidden_state = module(hidden_state)
hidden_state = self.snake1(hidden_state)
hidden_state = self.conv2(hidden_state)
return hidden_state
class OobleckDecoder(nn.Module):
"""Oobleck Decoder"""
def __init__(self, channels, input_channels, audio_channels, upsampling_ratios, channel_multiples):
super().__init__()
strides = upsampling_ratios
channel_multiples = [1] + channel_multiples
# Add first conv layer
self.conv1 = weight_norm(nn.Conv1d(input_channels, channels * channel_multiples[-1], kernel_size=7, padding=3))
# Add upsampling + MRF blocks
block = []
for stride_index, stride in enumerate(strides):
block += [
OobleckDecoderBlock(
input_dim=channels * channel_multiples[len(strides) - stride_index],
output_dim=channels * channel_multiples[len(strides) - stride_index - 1],
stride=stride,
)
]
self.block = nn.ModuleList(block)
output_dim = channels
self.snake1 = Snake1d(output_dim)
self.conv2 = weight_norm(nn.Conv1d(channels, audio_channels, kernel_size=7, padding=3, bias=False))
def forward(self, hidden_state):
hidden_state = self.conv1(hidden_state)
for layer in self.block:
hidden_state = layer(hidden_state)
hidden_state = self.snake1(hidden_state)
hidden_state = self.conv2(hidden_state)
return hidden_state
class AutoencoderOobleck(ModelMixin, ConfigMixin):
r"""
An autoencoder for encoding waveforms into latents and decoding latent representations into waveforms. First
introduced in Stable Audio.
This model inherits from [`ModelMixin`]. Check the superclass documentation for it's generic methods implemented
for all models (such as downloading or saving).
Parameters:
encoder_hidden_size (`int`, *optional*, defaults to 128):
Intermediate representation dimension for the encoder.
downsampling_ratios (`List[int]`, *optional*, defaults to `[2, 4, 4, 8, 8]`):
Ratios for downsampling in the encoder. These are used in reverse order for upsampling in the decoder.
channel_multiples (`List[int]`, *optional*, defaults to `[1, 2, 4, 8, 16]`):
Multiples used to determine the hidden sizes of the hidden layers.
decoder_channels (`int`, *optional*, defaults to 128):
Intermediate representation dimension for the decoder.
decoder_input_channels (`int`, *optional*, defaults to 64):
Input dimension for the decoder. Corresponds to the latent dimension.
audio_channels (`int`, *optional*, defaults to 2):
Number of channels in the audio data. Either 1 for mono or 2 for stereo.
sampling_rate (`int`, *optional*, defaults to 44100):
The sampling rate at which the audio waveform should be digitalized expressed in hertz (Hz).
"""
_supports_gradient_checkpointing = False
@register_to_config
def __init__(
self,
encoder_hidden_size=128,
downsampling_ratios=[2, 4, 4, 8, 8],
channel_multiples=[1, 2, 4, 8, 16],
decoder_channels=128,
decoder_input_channels=64,
audio_channels=2,
sampling_rate=44100,
):
super().__init__()
self.encoder_hidden_size = encoder_hidden_size
self.downsampling_ratios = downsampling_ratios
self.decoder_channels = decoder_channels
self.upsampling_ratios = downsampling_ratios[::-1]
self.hop_length = int(np.prod(downsampling_ratios))
self.sampling_rate = sampling_rate
self.encoder = OobleckEncoder(
encoder_hidden_size=encoder_hidden_size,
audio_channels=audio_channels,
downsampling_ratios=downsampling_ratios,
channel_multiples=channel_multiples,
)
self.decoder = OobleckDecoder(
channels=decoder_channels,
input_channels=decoder_input_channels,
audio_channels=audio_channels,
upsampling_ratios=self.upsampling_ratios,
channel_multiples=channel_multiples,
)
self.use_slicing = False
def enable_slicing(self):
r"""
Enable sliced VAE decoding. When this option is enabled, the VAE will split the input tensor in slices to
compute decoding in several steps. This is useful to save some memory and allow larger batch sizes.
"""
self.use_slicing = True
def disable_slicing(self):
r"""
Disable sliced VAE decoding. If `enable_slicing` was previously enabled, this method will go back to computing
decoding in one step.
"""
self.use_slicing = False
@apply_forward_hook
def encode(
self, x: torch.Tensor, return_dict: bool = True
) -> Union[AutoencoderOobleckOutput, Tuple[OobleckDiagonalGaussianDistribution]]:
"""
Encode a batch of images into latents.
Args:
x (`torch.Tensor`): Input batch of images.
return_dict (`bool`, *optional*, defaults to `True`):
Whether to return a [`~models.autoencoder_kl.AutoencoderKLOutput`] instead of a plain tuple.
Returns:
The latent representations of the encoded images. If `return_dict` is True, a
[`~models.autoencoder_kl.AutoencoderKLOutput`] is returned, otherwise a plain `tuple` is returned.
"""
if self.use_slicing and x.shape[0] > 1:
encoded_slices = [self.encoder(x_slice) for x_slice in x.split(1)]
h = torch.cat(encoded_slices)
else:
h = self.encoder(x)
posterior = OobleckDiagonalGaussianDistribution(h)
if not return_dict:
return (posterior,)
return AutoencoderOobleckOutput(latent_dist=posterior)
def _decode(self, z: torch.Tensor, return_dict: bool = True) -> Union[OobleckDecoderOutput, torch.Tensor]:
dec = self.decoder(z)
if not return_dict:
return (dec,)
return OobleckDecoderOutput(sample=dec)
@apply_forward_hook
def decode(
self, z: torch.FloatTensor, return_dict: bool = True, generator=None
) -> Union[OobleckDecoderOutput, torch.FloatTensor]:
"""
Decode a batch of images.
Args:
z (`torch.Tensor`): Input batch of latent vectors.
return_dict (`bool`, *optional*, defaults to `True`):
Whether to return a [`~models.vae.OobleckDecoderOutput`] instead of a plain tuple.
Returns:
[`~models.vae.OobleckDecoderOutput`] or `tuple`:
If return_dict is True, a [`~models.vae.OobleckDecoderOutput`] is returned, otherwise a plain `tuple`
is returned.
"""
if self.use_slicing and z.shape[0] > 1:
decoded_slices = [self._decode(z_slice).sample for z_slice in z.split(1)]
decoded = torch.cat(decoded_slices)
else:
decoded = self._decode(z).sample
if not return_dict:
return (decoded,)
return OobleckDecoderOutput(sample=decoded)
def forward(
self,
sample: torch.Tensor,
sample_posterior: bool = False,
return_dict: bool = True,
generator: Optional[torch.Generator] = None,
) -> Union[OobleckDecoderOutput, torch.Tensor]:
r"""
Args:
sample (`torch.Tensor`): Input sample.
sample_posterior (`bool`, *optional*, defaults to `False`):
Whether to sample from the posterior.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`OobleckDecoderOutput`] instead of a plain tuple.
"""
x = sample
posterior = self.encode(x).latent_dist
if sample_posterior:
z = posterior.sample(generator=generator)
else:
z = posterior.mode()
dec = self.decode(z).sample
if not return_dict:
return (dec,)
return OobleckDecoderOutput(sample=dec)
|
diffusers/src/diffusers/models/autoencoders/autoencoder_oobleck.py/0
|
{
"file_path": "diffusers/src/diffusers/models/autoencoders/autoencoder_oobleck.py",
"repo_id": "diffusers",
"token_count": 7317
}
| 122
|
# coding=utf-8
# Copyright 2024 The HuggingFace Inc. team.
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import importlib
import inspect
import os
from collections import OrderedDict
from pathlib import Path
from typing import List, Optional, Union
import safetensors
import torch
from huggingface_hub.utils import EntryNotFoundError
from ..utils import (
SAFE_WEIGHTS_INDEX_NAME,
SAFETENSORS_FILE_EXTENSION,
WEIGHTS_INDEX_NAME,
_add_variant,
_get_model_file,
is_accelerate_available,
is_torch_version,
logging,
)
logger = logging.get_logger(__name__)
_CLASS_REMAPPING_DICT = {
"Transformer2DModel": {
"ada_norm_zero": "DiTTransformer2DModel",
"ada_norm_single": "PixArtTransformer2DModel",
}
}
if is_accelerate_available():
from accelerate import infer_auto_device_map
from accelerate.utils import get_balanced_memory, get_max_memory, set_module_tensor_to_device
# Adapted from `transformers` (see modeling_utils.py)
def _determine_device_map(model: torch.nn.Module, device_map, max_memory, torch_dtype):
if isinstance(device_map, str):
no_split_modules = model._get_no_split_modules(device_map)
device_map_kwargs = {"no_split_module_classes": no_split_modules}
if device_map != "sequential":
max_memory = get_balanced_memory(
model,
dtype=torch_dtype,
low_zero=(device_map == "balanced_low_0"),
max_memory=max_memory,
**device_map_kwargs,
)
else:
max_memory = get_max_memory(max_memory)
device_map_kwargs["max_memory"] = max_memory
device_map = infer_auto_device_map(model, dtype=torch_dtype, **device_map_kwargs)
return device_map
def _fetch_remapped_cls_from_config(config, old_class):
previous_class_name = old_class.__name__
remapped_class_name = _CLASS_REMAPPING_DICT.get(previous_class_name).get(config["norm_type"], None)
# Details:
# https://github.com/huggingface/diffusers/pull/7647#discussion_r1621344818
if remapped_class_name:
# load diffusers library to import compatible and original scheduler
diffusers_library = importlib.import_module(__name__.split(".")[0])
remapped_class = getattr(diffusers_library, remapped_class_name)
logger.info(
f"Changing class object to be of `{remapped_class_name}` type from `{previous_class_name}` type."
f"This is because `{previous_class_name}` is scheduled to be deprecated in a future version. Note that this"
" DOESN'T affect the final results."
)
return remapped_class
else:
return old_class
def load_state_dict(checkpoint_file: Union[str, os.PathLike], variant: Optional[str] = None):
"""
Reads a checkpoint file, returning properly formatted errors if they arise.
"""
try:
file_extension = os.path.basename(checkpoint_file).split(".")[-1]
if file_extension == SAFETENSORS_FILE_EXTENSION:
return safetensors.torch.load_file(checkpoint_file, device="cpu")
else:
weights_only_kwarg = {"weights_only": True} if is_torch_version(">=", "1.13") else {}
return torch.load(
checkpoint_file,
map_location="cpu",
**weights_only_kwarg,
)
except Exception as e:
try:
with open(checkpoint_file) as f:
if f.read().startswith("version"):
raise OSError(
"You seem to have cloned a repository without having git-lfs installed. Please install "
"git-lfs and run `git lfs install` followed by `git lfs pull` in the folder "
"you cloned."
)
else:
raise ValueError(
f"Unable to locate the file {checkpoint_file} which is necessary to load this pretrained "
"model. Make sure you have saved the model properly."
) from e
except (UnicodeDecodeError, ValueError):
raise OSError(
f"Unable to load weights from checkpoint file for '{checkpoint_file}' " f"at '{checkpoint_file}'. "
)
def load_model_dict_into_meta(
model,
state_dict: OrderedDict,
device: Optional[Union[str, torch.device]] = None,
dtype: Optional[Union[str, torch.dtype]] = None,
model_name_or_path: Optional[str] = None,
) -> List[str]:
device = device or torch.device("cpu")
dtype = dtype or torch.float32
accepts_dtype = "dtype" in set(inspect.signature(set_module_tensor_to_device).parameters.keys())
unexpected_keys = []
empty_state_dict = model.state_dict()
for param_name, param in state_dict.items():
if param_name not in empty_state_dict:
unexpected_keys.append(param_name)
continue
if empty_state_dict[param_name].shape != param.shape:
model_name_or_path_str = f"{model_name_or_path} " if model_name_or_path is not None else ""
raise ValueError(
f"Cannot load {model_name_or_path_str}because {param_name} expected shape {empty_state_dict[param_name]}, but got {param.shape}. If you want to instead overwrite randomly initialized weights, please make sure to pass both `low_cpu_mem_usage=False` and `ignore_mismatched_sizes=True`. For more information, see also: https://github.com/huggingface/diffusers/issues/1619#issuecomment-1345604389 as an example."
)
if accepts_dtype:
set_module_tensor_to_device(model, param_name, device, value=param, dtype=dtype)
else:
set_module_tensor_to_device(model, param_name, device, value=param)
return unexpected_keys
def _load_state_dict_into_model(model_to_load, state_dict: OrderedDict) -> List[str]:
# Convert old format to new format if needed from a PyTorch state_dict
# copy state_dict so _load_from_state_dict can modify it
state_dict = state_dict.copy()
error_msgs = []
# PyTorch's `_load_from_state_dict` does not copy parameters in a module's descendants
# so we need to apply the function recursively.
def load(module: torch.nn.Module, prefix: str = ""):
args = (state_dict, prefix, {}, True, [], [], error_msgs)
module._load_from_state_dict(*args)
for name, child in module._modules.items():
if child is not None:
load(child, prefix + name + ".")
load(model_to_load)
return error_msgs
def _fetch_index_file(
is_local,
pretrained_model_name_or_path,
subfolder,
use_safetensors,
cache_dir,
variant,
force_download,
proxies,
local_files_only,
token,
revision,
user_agent,
commit_hash,
):
if is_local:
index_file = Path(
pretrained_model_name_or_path,
subfolder or "",
_add_variant(SAFE_WEIGHTS_INDEX_NAME if use_safetensors else WEIGHTS_INDEX_NAME, variant),
)
else:
index_file_in_repo = Path(
subfolder or "",
_add_variant(SAFE_WEIGHTS_INDEX_NAME if use_safetensors else WEIGHTS_INDEX_NAME, variant),
).as_posix()
try:
index_file = _get_model_file(
pretrained_model_name_or_path,
weights_name=index_file_in_repo,
cache_dir=cache_dir,
force_download=force_download,
proxies=proxies,
local_files_only=local_files_only,
token=token,
revision=revision,
subfolder=None,
user_agent=user_agent,
commit_hash=commit_hash,
)
index_file = Path(index_file)
except (EntryNotFoundError, EnvironmentError):
index_file = None
return index_file
|
diffusers/src/diffusers/models/model_loading_utils.py/0
|
{
"file_path": "diffusers/src/diffusers/models/model_loading_utils.py",
"repo_id": "diffusers",
"token_count": 3673
}
| 123
|
# Copyright 2024 Alpha-VLLM Authors and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Any, Dict, Optional
import torch
import torch.nn as nn
from ...configuration_utils import ConfigMixin, register_to_config
from ...utils import logging
from ..attention import LuminaFeedForward
from ..attention_processor import Attention, LuminaAttnProcessor2_0
from ..embeddings import (
LuminaCombinedTimestepCaptionEmbedding,
LuminaPatchEmbed,
)
from ..modeling_outputs import Transformer2DModelOutput
from ..modeling_utils import ModelMixin
from ..normalization import LuminaLayerNormContinuous, LuminaRMSNormZero, RMSNorm
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
class LuminaNextDiTBlock(nn.Module):
"""
A LuminaNextDiTBlock for LuminaNextDiT2DModel.
Parameters:
dim (`int`): Embedding dimension of the input features.
num_attention_heads (`int`): Number of attention heads.
num_kv_heads (`int`):
Number of attention heads in key and value features (if using GQA), or set to None for the same as query.
multiple_of (`int`): The number of multiple of ffn layer.
ffn_dim_multiplier (`float`): The multipier factor of ffn layer dimension.
norm_eps (`float`): The eps for norm layer.
qk_norm (`bool`): normalization for query and key.
cross_attention_dim (`int`): Cross attention embedding dimension of the input text prompt hidden_states.
norm_elementwise_affine (`bool`, *optional*, defaults to True),
"""
def __init__(
self,
dim: int,
num_attention_heads: int,
num_kv_heads: int,
multiple_of: int,
ffn_dim_multiplier: float,
norm_eps: float,
qk_norm: bool,
cross_attention_dim: int,
norm_elementwise_affine: bool = True,
) -> None:
super().__init__()
self.head_dim = dim // num_attention_heads
self.gate = nn.Parameter(torch.zeros([num_attention_heads]))
# Self-attention
self.attn1 = Attention(
query_dim=dim,
cross_attention_dim=None,
dim_head=dim // num_attention_heads,
qk_norm="layer_norm_across_heads" if qk_norm else None,
heads=num_attention_heads,
kv_heads=num_kv_heads,
eps=1e-5,
bias=False,
out_bias=False,
processor=LuminaAttnProcessor2_0(),
)
self.attn1.to_out = nn.Identity()
# Cross-attention
self.attn2 = Attention(
query_dim=dim,
cross_attention_dim=cross_attention_dim,
dim_head=dim // num_attention_heads,
qk_norm="layer_norm_across_heads" if qk_norm else None,
heads=num_attention_heads,
kv_heads=num_kv_heads,
eps=1e-5,
bias=False,
out_bias=False,
processor=LuminaAttnProcessor2_0(),
)
self.feed_forward = LuminaFeedForward(
dim=dim,
inner_dim=4 * dim,
multiple_of=multiple_of,
ffn_dim_multiplier=ffn_dim_multiplier,
)
self.norm1 = LuminaRMSNormZero(
embedding_dim=dim,
norm_eps=norm_eps,
norm_elementwise_affine=norm_elementwise_affine,
)
self.ffn_norm1 = RMSNorm(dim, eps=norm_eps, elementwise_affine=norm_elementwise_affine)
self.norm2 = RMSNorm(dim, eps=norm_eps, elementwise_affine=norm_elementwise_affine)
self.ffn_norm2 = RMSNorm(dim, eps=norm_eps, elementwise_affine=norm_elementwise_affine)
self.norm1_context = RMSNorm(cross_attention_dim, eps=norm_eps, elementwise_affine=norm_elementwise_affine)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: torch.Tensor,
image_rotary_emb: torch.Tensor,
encoder_hidden_states: torch.Tensor,
encoder_mask: torch.Tensor,
temb: torch.Tensor,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
):
"""
Perform a forward pass through the LuminaNextDiTBlock.
Parameters:
hidden_states (`torch.Tensor`): The input of hidden_states for LuminaNextDiTBlock.
attention_mask (`torch.Tensor): The input of hidden_states corresponse attention mask.
image_rotary_emb (`torch.Tensor`): Precomputed cosine and sine frequencies.
encoder_hidden_states: (`torch.Tensor`): The hidden_states of text prompt are processed by Gemma encoder.
encoder_mask (`torch.Tensor`): The hidden_states of text prompt attention mask.
temb (`torch.Tensor`): Timestep embedding with text prompt embedding.
cross_attention_kwargs (`Dict[str, Any]`): kwargs for cross attention.
"""
residual = hidden_states
# Self-attention
norm_hidden_states, gate_msa, scale_mlp, gate_mlp = self.norm1(hidden_states, temb)
self_attn_output = self.attn1(
hidden_states=norm_hidden_states,
encoder_hidden_states=norm_hidden_states,
attention_mask=attention_mask,
query_rotary_emb=image_rotary_emb,
key_rotary_emb=image_rotary_emb,
**cross_attention_kwargs,
)
# Cross-attention
norm_encoder_hidden_states = self.norm1_context(encoder_hidden_states)
cross_attn_output = self.attn2(
hidden_states=norm_hidden_states,
encoder_hidden_states=norm_encoder_hidden_states,
attention_mask=encoder_mask,
query_rotary_emb=image_rotary_emb,
key_rotary_emb=None,
**cross_attention_kwargs,
)
cross_attn_output = cross_attn_output * self.gate.tanh().view(1, 1, -1, 1)
mixed_attn_output = self_attn_output + cross_attn_output
mixed_attn_output = mixed_attn_output.flatten(-2)
# linear proj
hidden_states = self.attn2.to_out[0](mixed_attn_output)
hidden_states = residual + gate_msa.unsqueeze(1).tanh() * self.norm2(hidden_states)
mlp_output = self.feed_forward(self.ffn_norm1(hidden_states) * (1 + scale_mlp.unsqueeze(1)))
hidden_states = hidden_states + gate_mlp.unsqueeze(1).tanh() * self.ffn_norm2(mlp_output)
return hidden_states
class LuminaNextDiT2DModel(ModelMixin, ConfigMixin):
"""
LuminaNextDiT: Diffusion model with a Transformer backbone.
Inherit ModelMixin and ConfigMixin to be compatible with the sampler StableDiffusionPipeline of diffusers.
Parameters:
sample_size (`int`): The width of the latent images. This is fixed during training since
it is used to learn a number of position embeddings.
patch_size (`int`, *optional*, (`int`, *optional*, defaults to 2):
The size of each patch in the image. This parameter defines the resolution of patches fed into the model.
in_channels (`int`, *optional*, defaults to 4):
The number of input channels for the model. Typically, this matches the number of channels in the input
images.
hidden_size (`int`, *optional*, defaults to 4096):
The dimensionality of the hidden layers in the model. This parameter determines the width of the model's
hidden representations.
num_layers (`int`, *optional*, default to 32):
The number of layers in the model. This defines the depth of the neural network.
num_attention_heads (`int`, *optional*, defaults to 32):
The number of attention heads in each attention layer. This parameter specifies how many separate attention
mechanisms are used.
num_kv_heads (`int`, *optional*, defaults to 8):
The number of key-value heads in the attention mechanism, if different from the number of attention heads.
If None, it defaults to num_attention_heads.
multiple_of (`int`, *optional*, defaults to 256):
A factor that the hidden size should be a multiple of. This can help optimize certain hardware
configurations.
ffn_dim_multiplier (`float`, *optional*):
A multiplier for the dimensionality of the feed-forward network. If None, it uses a default value based on
the model configuration.
norm_eps (`float`, *optional*, defaults to 1e-5):
A small value added to the denominator for numerical stability in normalization layers.
learn_sigma (`bool`, *optional*, defaults to True):
Whether the model should learn the sigma parameter, which might be related to uncertainty or variance in
predictions.
qk_norm (`bool`, *optional*, defaults to True):
Indicates if the queries and keys in the attention mechanism should be normalized.
cross_attention_dim (`int`, *optional*, defaults to 2048):
The dimensionality of the text embeddings. This parameter defines the size of the text representations used
in the model.
scaling_factor (`float`, *optional*, defaults to 1.0):
A scaling factor applied to certain parameters or layers in the model. This can be used for adjusting the
overall scale of the model's operations.
"""
@register_to_config
def __init__(
self,
sample_size: int = 128,
patch_size: Optional[int] = 2,
in_channels: Optional[int] = 4,
hidden_size: Optional[int] = 2304,
num_layers: Optional[int] = 32,
num_attention_heads: Optional[int] = 32,
num_kv_heads: Optional[int] = None,
multiple_of: Optional[int] = 256,
ffn_dim_multiplier: Optional[float] = None,
norm_eps: Optional[float] = 1e-5,
learn_sigma: Optional[bool] = True,
qk_norm: Optional[bool] = True,
cross_attention_dim: Optional[int] = 2048,
scaling_factor: Optional[float] = 1.0,
) -> None:
super().__init__()
self.sample_size = sample_size
self.patch_size = patch_size
self.in_channels = in_channels
self.out_channels = in_channels * 2 if learn_sigma else in_channels
self.hidden_size = hidden_size
self.num_attention_heads = num_attention_heads
self.head_dim = hidden_size // num_attention_heads
self.scaling_factor = scaling_factor
self.patch_embedder = LuminaPatchEmbed(
patch_size=patch_size, in_channels=in_channels, embed_dim=hidden_size, bias=True
)
self.pad_token = nn.Parameter(torch.empty(hidden_size))
self.time_caption_embed = LuminaCombinedTimestepCaptionEmbedding(
hidden_size=min(hidden_size, 1024), cross_attention_dim=cross_attention_dim
)
self.layers = nn.ModuleList(
[
LuminaNextDiTBlock(
hidden_size,
num_attention_heads,
num_kv_heads,
multiple_of,
ffn_dim_multiplier,
norm_eps,
qk_norm,
cross_attention_dim,
)
for _ in range(num_layers)
]
)
self.norm_out = LuminaLayerNormContinuous(
embedding_dim=hidden_size,
conditioning_embedding_dim=min(hidden_size, 1024),
elementwise_affine=False,
eps=1e-6,
bias=True,
out_dim=patch_size * patch_size * self.out_channels,
)
# self.final_layer = LuminaFinalLayer(hidden_size, patch_size, self.out_channels)
assert (hidden_size // num_attention_heads) % 4 == 0, "2d rope needs head dim to be divisible by 4"
def forward(
self,
hidden_states: torch.Tensor,
timestep: torch.Tensor,
encoder_hidden_states: torch.Tensor,
encoder_mask: torch.Tensor,
image_rotary_emb: torch.Tensor,
cross_attention_kwargs: Dict[str, Any] = None,
return_dict=True,
) -> torch.Tensor:
"""
Forward pass of LuminaNextDiT.
Parameters:
hidden_states (torch.Tensor): Input tensor of shape (N, C, H, W).
timestep (torch.Tensor): Tensor of diffusion timesteps of shape (N,).
encoder_hidden_states (torch.Tensor): Tensor of caption features of shape (N, D).
encoder_mask (torch.Tensor): Tensor of caption masks of shape (N, L).
"""
hidden_states, mask, img_size, image_rotary_emb = self.patch_embedder(hidden_states, image_rotary_emb)
image_rotary_emb = image_rotary_emb.to(hidden_states.device)
temb = self.time_caption_embed(timestep, encoder_hidden_states, encoder_mask)
encoder_mask = encoder_mask.bool()
for layer in self.layers:
hidden_states = layer(
hidden_states,
mask,
image_rotary_emb,
encoder_hidden_states,
encoder_mask,
temb=temb,
cross_attention_kwargs=cross_attention_kwargs,
)
hidden_states = self.norm_out(hidden_states, temb)
# unpatchify
height_tokens = width_tokens = self.patch_size
height, width = img_size[0]
batch_size = hidden_states.size(0)
sequence_length = (height // height_tokens) * (width // width_tokens)
hidden_states = hidden_states[:, :sequence_length].view(
batch_size, height // height_tokens, width // width_tokens, height_tokens, width_tokens, self.out_channels
)
output = hidden_states.permute(0, 5, 1, 3, 2, 4).flatten(4, 5).flatten(2, 3)
if not return_dict:
return (output,)
return Transformer2DModelOutput(sample=output)
|
diffusers/src/diffusers/models/transformers/lumina_nextdit2d.py/0
|
{
"file_path": "diffusers/src/diffusers/models/transformers/lumina_nextdit2d.py",
"repo_id": "diffusers",
"token_count": 6276
}
| 124
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Dict, Optional, Tuple, Union
import flax
import flax.linen as nn
import jax
import jax.numpy as jnp
from flax.core.frozen_dict import FrozenDict
from ...configuration_utils import ConfigMixin, flax_register_to_config
from ...utils import BaseOutput
from ..embeddings_flax import FlaxTimestepEmbedding, FlaxTimesteps
from ..modeling_flax_utils import FlaxModelMixin
from .unet_2d_blocks_flax import (
FlaxCrossAttnDownBlock2D,
FlaxCrossAttnUpBlock2D,
FlaxDownBlock2D,
FlaxUNetMidBlock2DCrossAttn,
FlaxUpBlock2D,
)
@flax.struct.dataclass
class FlaxUNet2DConditionOutput(BaseOutput):
"""
The output of [`FlaxUNet2DConditionModel`].
Args:
sample (`jnp.ndarray` of shape `(batch_size, num_channels, height, width)`):
The hidden states output conditioned on `encoder_hidden_states` input. Output of last layer of model.
"""
sample: jnp.ndarray
@flax_register_to_config
class FlaxUNet2DConditionModel(nn.Module, FlaxModelMixin, ConfigMixin):
r"""
A conditional 2D UNet model that takes a noisy sample, conditional state, and a timestep and returns a sample
shaped output.
This model inherits from [`FlaxModelMixin`]. Check the superclass documentation for it's generic methods
implemented for all models (such as downloading or saving).
This model is also a Flax Linen [flax.linen.Module](https://flax.readthedocs.io/en/latest/flax.linen.html#module)
subclass. Use it as a regular Flax Linen module and refer to the Flax documentation for all matters related to its
general usage and behavior.
Inherent JAX features such as the following are supported:
- [Just-In-Time (JIT) compilation](https://jax.readthedocs.io/en/latest/jax.html#just-in-time-compilation-jit)
- [Automatic Differentiation](https://jax.readthedocs.io/en/latest/jax.html#automatic-differentiation)
- [Vectorization](https://jax.readthedocs.io/en/latest/jax.html#vectorization-vmap)
- [Parallelization](https://jax.readthedocs.io/en/latest/jax.html#parallelization-pmap)
Parameters:
sample_size (`int`, *optional*):
The size of the input sample.
in_channels (`int`, *optional*, defaults to 4):
The number of channels in the input sample.
out_channels (`int`, *optional*, defaults to 4):
The number of channels in the output.
down_block_types (`Tuple[str]`, *optional*, defaults to `("FlaxCrossAttnDownBlock2D", "FlaxCrossAttnDownBlock2D", "FlaxCrossAttnDownBlock2D", "FlaxDownBlock2D")`):
The tuple of downsample blocks to use.
up_block_types (`Tuple[str]`, *optional*, defaults to `("FlaxUpBlock2D", "FlaxCrossAttnUpBlock2D", "FlaxCrossAttnUpBlock2D", "FlaxCrossAttnUpBlock2D")`):
The tuple of upsample blocks to use.
mid_block_type (`str`, *optional*, defaults to `"UNetMidBlock2DCrossAttn"`):
Block type for middle of UNet, it can be one of `UNetMidBlock2DCrossAttn`. If `None`, the mid block layer
is skipped.
block_out_channels (`Tuple[int]`, *optional*, defaults to `(320, 640, 1280, 1280)`):
The tuple of output channels for each block.
layers_per_block (`int`, *optional*, defaults to 2):
The number of layers per block.
attention_head_dim (`int` or `Tuple[int]`, *optional*, defaults to 8):
The dimension of the attention heads.
num_attention_heads (`int` or `Tuple[int]`, *optional*):
The number of attention heads.
cross_attention_dim (`int`, *optional*, defaults to 768):
The dimension of the cross attention features.
dropout (`float`, *optional*, defaults to 0):
Dropout probability for down, up and bottleneck blocks.
flip_sin_to_cos (`bool`, *optional*, defaults to `True`):
Whether to flip the sin to cos in the time embedding.
freq_shift (`int`, *optional*, defaults to 0): The frequency shift to apply to the time embedding.
use_memory_efficient_attention (`bool`, *optional*, defaults to `False`):
Enable memory efficient attention as described [here](https://arxiv.org/abs/2112.05682).
split_head_dim (`bool`, *optional*, defaults to `False`):
Whether to split the head dimension into a new axis for the self-attention computation. In most cases,
enabling this flag should speed up the computation for Stable Diffusion 2.x and Stable Diffusion XL.
"""
sample_size: int = 32
in_channels: int = 4
out_channels: int = 4
down_block_types: Tuple[str, ...] = (
"CrossAttnDownBlock2D",
"CrossAttnDownBlock2D",
"CrossAttnDownBlock2D",
"DownBlock2D",
)
up_block_types: Tuple[str, ...] = ("UpBlock2D", "CrossAttnUpBlock2D", "CrossAttnUpBlock2D", "CrossAttnUpBlock2D")
mid_block_type: Optional[str] = "UNetMidBlock2DCrossAttn"
only_cross_attention: Union[bool, Tuple[bool]] = False
block_out_channels: Tuple[int, ...] = (320, 640, 1280, 1280)
layers_per_block: int = 2
attention_head_dim: Union[int, Tuple[int, ...]] = 8
num_attention_heads: Optional[Union[int, Tuple[int, ...]]] = None
cross_attention_dim: int = 1280
dropout: float = 0.0
use_linear_projection: bool = False
dtype: jnp.dtype = jnp.float32
flip_sin_to_cos: bool = True
freq_shift: int = 0
use_memory_efficient_attention: bool = False
split_head_dim: bool = False
transformer_layers_per_block: Union[int, Tuple[int, ...]] = 1
addition_embed_type: Optional[str] = None
addition_time_embed_dim: Optional[int] = None
addition_embed_type_num_heads: int = 64
projection_class_embeddings_input_dim: Optional[int] = None
def init_weights(self, rng: jax.Array) -> FrozenDict:
# init input tensors
sample_shape = (1, self.in_channels, self.sample_size, self.sample_size)
sample = jnp.zeros(sample_shape, dtype=jnp.float32)
timesteps = jnp.ones((1,), dtype=jnp.int32)
encoder_hidden_states = jnp.zeros((1, 1, self.cross_attention_dim), dtype=jnp.float32)
params_rng, dropout_rng = jax.random.split(rng)
rngs = {"params": params_rng, "dropout": dropout_rng}
added_cond_kwargs = None
if self.addition_embed_type == "text_time":
# we retrieve the expected `text_embeds_dim` by first checking if the architecture is a refiner
# or non-refiner architecture and then by "reverse-computing" from `projection_class_embeddings_input_dim`
is_refiner = (
5 * self.config.addition_time_embed_dim + self.config.cross_attention_dim
== self.config.projection_class_embeddings_input_dim
)
num_micro_conditions = 5 if is_refiner else 6
text_embeds_dim = self.config.projection_class_embeddings_input_dim - (
num_micro_conditions * self.config.addition_time_embed_dim
)
time_ids_channels = self.projection_class_embeddings_input_dim - text_embeds_dim
time_ids_dims = time_ids_channels // self.addition_time_embed_dim
added_cond_kwargs = {
"text_embeds": jnp.zeros((1, text_embeds_dim), dtype=jnp.float32),
"time_ids": jnp.zeros((1, time_ids_dims), dtype=jnp.float32),
}
return self.init(rngs, sample, timesteps, encoder_hidden_states, added_cond_kwargs)["params"]
def setup(self) -> None:
block_out_channels = self.block_out_channels
time_embed_dim = block_out_channels[0] * 4
if self.num_attention_heads is not None:
raise ValueError(
"At the moment it is not possible to define the number of attention heads via `num_attention_heads` because of a naming issue as described in https://github.com/huggingface/diffusers/issues/2011#issuecomment-1547958131. Passing `num_attention_heads` will only be supported in diffusers v0.19."
)
# If `num_attention_heads` is not defined (which is the case for most models)
# it will default to `attention_head_dim`. This looks weird upon first reading it and it is.
# The reason for this behavior is to correct for incorrectly named variables that were introduced
# when this library was created. The incorrect naming was only discovered much later in https://github.com/huggingface/diffusers/issues/2011#issuecomment-1547958131
# Changing `attention_head_dim` to `num_attention_heads` for 40,000+ configurations is too backwards breaking
# which is why we correct for the naming here.
num_attention_heads = self.num_attention_heads or self.attention_head_dim
# input
self.conv_in = nn.Conv(
block_out_channels[0],
kernel_size=(3, 3),
strides=(1, 1),
padding=((1, 1), (1, 1)),
dtype=self.dtype,
)
# time
self.time_proj = FlaxTimesteps(
block_out_channels[0], flip_sin_to_cos=self.flip_sin_to_cos, freq_shift=self.config.freq_shift
)
self.time_embedding = FlaxTimestepEmbedding(time_embed_dim, dtype=self.dtype)
only_cross_attention = self.only_cross_attention
if isinstance(only_cross_attention, bool):
only_cross_attention = (only_cross_attention,) * len(self.down_block_types)
if isinstance(num_attention_heads, int):
num_attention_heads = (num_attention_heads,) * len(self.down_block_types)
# transformer layers per block
transformer_layers_per_block = self.transformer_layers_per_block
if isinstance(transformer_layers_per_block, int):
transformer_layers_per_block = [transformer_layers_per_block] * len(self.down_block_types)
# addition embed types
if self.addition_embed_type is None:
self.add_embedding = None
elif self.addition_embed_type == "text_time":
if self.addition_time_embed_dim is None:
raise ValueError(
f"addition_embed_type {self.addition_embed_type} requires `addition_time_embed_dim` to not be None"
)
self.add_time_proj = FlaxTimesteps(self.addition_time_embed_dim, self.flip_sin_to_cos, self.freq_shift)
self.add_embedding = FlaxTimestepEmbedding(time_embed_dim, dtype=self.dtype)
else:
raise ValueError(f"addition_embed_type: {self.addition_embed_type} must be None or `text_time`.")
# down
down_blocks = []
output_channel = block_out_channels[0]
for i, down_block_type in enumerate(self.down_block_types):
input_channel = output_channel
output_channel = block_out_channels[i]
is_final_block = i == len(block_out_channels) - 1
if down_block_type == "CrossAttnDownBlock2D":
down_block = FlaxCrossAttnDownBlock2D(
in_channels=input_channel,
out_channels=output_channel,
dropout=self.dropout,
num_layers=self.layers_per_block,
transformer_layers_per_block=transformer_layers_per_block[i],
num_attention_heads=num_attention_heads[i],
add_downsample=not is_final_block,
use_linear_projection=self.use_linear_projection,
only_cross_attention=only_cross_attention[i],
use_memory_efficient_attention=self.use_memory_efficient_attention,
split_head_dim=self.split_head_dim,
dtype=self.dtype,
)
else:
down_block = FlaxDownBlock2D(
in_channels=input_channel,
out_channels=output_channel,
dropout=self.dropout,
num_layers=self.layers_per_block,
add_downsample=not is_final_block,
dtype=self.dtype,
)
down_blocks.append(down_block)
self.down_blocks = down_blocks
# mid
if self.config.mid_block_type == "UNetMidBlock2DCrossAttn":
self.mid_block = FlaxUNetMidBlock2DCrossAttn(
in_channels=block_out_channels[-1],
dropout=self.dropout,
num_attention_heads=num_attention_heads[-1],
transformer_layers_per_block=transformer_layers_per_block[-1],
use_linear_projection=self.use_linear_projection,
use_memory_efficient_attention=self.use_memory_efficient_attention,
split_head_dim=self.split_head_dim,
dtype=self.dtype,
)
elif self.config.mid_block_type is None:
self.mid_block = None
else:
raise ValueError(f"Unexpected mid_block_type {self.config.mid_block_type}")
# up
up_blocks = []
reversed_block_out_channels = list(reversed(block_out_channels))
reversed_num_attention_heads = list(reversed(num_attention_heads))
only_cross_attention = list(reversed(only_cross_attention))
output_channel = reversed_block_out_channels[0]
reversed_transformer_layers_per_block = list(reversed(transformer_layers_per_block))
for i, up_block_type in enumerate(self.up_block_types):
prev_output_channel = output_channel
output_channel = reversed_block_out_channels[i]
input_channel = reversed_block_out_channels[min(i + 1, len(block_out_channels) - 1)]
is_final_block = i == len(block_out_channels) - 1
if up_block_type == "CrossAttnUpBlock2D":
up_block = FlaxCrossAttnUpBlock2D(
in_channels=input_channel,
out_channels=output_channel,
prev_output_channel=prev_output_channel,
num_layers=self.layers_per_block + 1,
transformer_layers_per_block=reversed_transformer_layers_per_block[i],
num_attention_heads=reversed_num_attention_heads[i],
add_upsample=not is_final_block,
dropout=self.dropout,
use_linear_projection=self.use_linear_projection,
only_cross_attention=only_cross_attention[i],
use_memory_efficient_attention=self.use_memory_efficient_attention,
split_head_dim=self.split_head_dim,
dtype=self.dtype,
)
else:
up_block = FlaxUpBlock2D(
in_channels=input_channel,
out_channels=output_channel,
prev_output_channel=prev_output_channel,
num_layers=self.layers_per_block + 1,
add_upsample=not is_final_block,
dropout=self.dropout,
dtype=self.dtype,
)
up_blocks.append(up_block)
prev_output_channel = output_channel
self.up_blocks = up_blocks
# out
self.conv_norm_out = nn.GroupNorm(num_groups=32, epsilon=1e-5)
self.conv_out = nn.Conv(
self.out_channels,
kernel_size=(3, 3),
strides=(1, 1),
padding=((1, 1), (1, 1)),
dtype=self.dtype,
)
def __call__(
self,
sample: jnp.ndarray,
timesteps: Union[jnp.ndarray, float, int],
encoder_hidden_states: jnp.ndarray,
added_cond_kwargs: Optional[Union[Dict, FrozenDict]] = None,
down_block_additional_residuals: Optional[Tuple[jnp.ndarray, ...]] = None,
mid_block_additional_residual: Optional[jnp.ndarray] = None,
return_dict: bool = True,
train: bool = False,
) -> Union[FlaxUNet2DConditionOutput, Tuple[jnp.ndarray]]:
r"""
Args:
sample (`jnp.ndarray`): (batch, channel, height, width) noisy inputs tensor
timestep (`jnp.ndarray` or `float` or `int`): timesteps
encoder_hidden_states (`jnp.ndarray`): (batch_size, sequence_length, hidden_size) encoder hidden states
added_cond_kwargs: (`dict`, *optional*):
A kwargs dictionary containing additional embeddings that if specified are added to the embeddings that
are passed along to the UNet blocks.
down_block_additional_residuals: (`tuple` of `torch.Tensor`, *optional*):
A tuple of tensors that if specified are added to the residuals of down unet blocks.
mid_block_additional_residual: (`torch.Tensor`, *optional*):
A tensor that if specified is added to the residual of the middle unet block.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`models.unets.unet_2d_condition_flax.FlaxUNet2DConditionOutput`] instead of
a plain tuple.
train (`bool`, *optional*, defaults to `False`):
Use deterministic functions and disable dropout when not training.
Returns:
[`~models.unets.unet_2d_condition_flax.FlaxUNet2DConditionOutput`] or `tuple`:
[`~models.unets.unet_2d_condition_flax.FlaxUNet2DConditionOutput`] if `return_dict` is True, otherwise a
`tuple`. When returning a tuple, the first element is the sample tensor.
"""
# 1. time
if not isinstance(timesteps, jnp.ndarray):
timesteps = jnp.array([timesteps], dtype=jnp.int32)
elif isinstance(timesteps, jnp.ndarray) and len(timesteps.shape) == 0:
timesteps = timesteps.astype(dtype=jnp.float32)
timesteps = jnp.expand_dims(timesteps, 0)
t_emb = self.time_proj(timesteps)
t_emb = self.time_embedding(t_emb)
# additional embeddings
aug_emb = None
if self.addition_embed_type == "text_time":
if added_cond_kwargs is None:
raise ValueError(
f"Need to provide argument `added_cond_kwargs` for {self.__class__} when using `addition_embed_type={self.addition_embed_type}`"
)
text_embeds = added_cond_kwargs.get("text_embeds")
if text_embeds is None:
raise ValueError(
f"{self.__class__} has the config param `addition_embed_type` set to 'text_time' which requires the keyword argument `text_embeds` to be passed in `added_cond_kwargs`"
)
time_ids = added_cond_kwargs.get("time_ids")
if time_ids is None:
raise ValueError(
f"{self.__class__} has the config param `addition_embed_type` set to 'text_time' which requires the keyword argument `time_ids` to be passed in `added_cond_kwargs`"
)
# compute time embeds
time_embeds = self.add_time_proj(jnp.ravel(time_ids)) # (1, 6) => (6,) => (6, 256)
time_embeds = jnp.reshape(time_embeds, (text_embeds.shape[0], -1))
add_embeds = jnp.concatenate([text_embeds, time_embeds], axis=-1)
aug_emb = self.add_embedding(add_embeds)
t_emb = t_emb + aug_emb if aug_emb is not None else t_emb
# 2. pre-process
sample = jnp.transpose(sample, (0, 2, 3, 1))
sample = self.conv_in(sample)
# 3. down
down_block_res_samples = (sample,)
for down_block in self.down_blocks:
if isinstance(down_block, FlaxCrossAttnDownBlock2D):
sample, res_samples = down_block(sample, t_emb, encoder_hidden_states, deterministic=not train)
else:
sample, res_samples = down_block(sample, t_emb, deterministic=not train)
down_block_res_samples += res_samples
if down_block_additional_residuals is not None:
new_down_block_res_samples = ()
for down_block_res_sample, down_block_additional_residual in zip(
down_block_res_samples, down_block_additional_residuals
):
down_block_res_sample += down_block_additional_residual
new_down_block_res_samples += (down_block_res_sample,)
down_block_res_samples = new_down_block_res_samples
# 4. mid
if self.mid_block is not None:
sample = self.mid_block(sample, t_emb, encoder_hidden_states, deterministic=not train)
if mid_block_additional_residual is not None:
sample += mid_block_additional_residual
# 5. up
for up_block in self.up_blocks:
res_samples = down_block_res_samples[-(self.layers_per_block + 1) :]
down_block_res_samples = down_block_res_samples[: -(self.layers_per_block + 1)]
if isinstance(up_block, FlaxCrossAttnUpBlock2D):
sample = up_block(
sample,
temb=t_emb,
encoder_hidden_states=encoder_hidden_states,
res_hidden_states_tuple=res_samples,
deterministic=not train,
)
else:
sample = up_block(sample, temb=t_emb, res_hidden_states_tuple=res_samples, deterministic=not train)
# 6. post-process
sample = self.conv_norm_out(sample)
sample = nn.silu(sample)
sample = self.conv_out(sample)
sample = jnp.transpose(sample, (0, 3, 1, 2))
if not return_dict:
return (sample,)
return FlaxUNet2DConditionOutput(sample=sample)
|
diffusers/src/diffusers/models/unets/unet_2d_condition_flax.py/0
|
{
"file_path": "diffusers/src/diffusers/models/unets/unet_2d_condition_flax.py",
"repo_id": "diffusers",
"token_count": 10117
}
| 125
|
# Copyright 2024 AuraFlow Authors and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import inspect
from typing import List, Optional, Tuple, Union
import torch
from transformers import T5Tokenizer, UMT5EncoderModel
from ...image_processor import VaeImageProcessor
from ...models import AuraFlowTransformer2DModel, AutoencoderKL
from ...models.attention_processor import AttnProcessor2_0, FusedAttnProcessor2_0, XFormersAttnProcessor
from ...schedulers import FlowMatchEulerDiscreteScheduler
from ...utils import logging, replace_example_docstring
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import torch
>>> from diffusers import AuraFlowPipeline
>>> pipe = AuraFlowPipeline.from_pretrained("fal/AuraFlow", torch_dtype=torch.float16)
>>> pipe = pipe.to("cuda")
>>> prompt = "A cat holding a sign that says hello world"
>>> image = pipe(prompt).images[0]
>>> image.save("aura_flow.png")
```
"""
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.retrieve_timesteps
def retrieve_timesteps(
scheduler,
num_inference_steps: Optional[int] = None,
device: Optional[Union[str, torch.device]] = None,
timesteps: Optional[List[int]] = None,
sigmas: Optional[List[float]] = None,
**kwargs,
):
"""
Calls the scheduler's `set_timesteps` method and retrieves timesteps from the scheduler after the call. Handles
custom timesteps. Any kwargs will be supplied to `scheduler.set_timesteps`.
Args:
scheduler (`SchedulerMixin`):
The scheduler to get timesteps from.
num_inference_steps (`int`):
The number of diffusion steps used when generating samples with a pre-trained model. If used, `timesteps`
must be `None`.
device (`str` or `torch.device`, *optional*):
The device to which the timesteps should be moved to. If `None`, the timesteps are not moved.
timesteps (`List[int]`, *optional*):
Custom timesteps used to override the timestep spacing strategy of the scheduler. If `timesteps` is passed,
`num_inference_steps` and `sigmas` must be `None`.
sigmas (`List[float]`, *optional*):
Custom sigmas used to override the timestep spacing strategy of the scheduler. If `sigmas` is passed,
`num_inference_steps` and `timesteps` must be `None`.
Returns:
`Tuple[torch.Tensor, int]`: A tuple where the first element is the timestep schedule from the scheduler and the
second element is the number of inference steps.
"""
if timesteps is not None and sigmas is not None:
raise ValueError("Only one of `timesteps` or `sigmas` can be passed. Please choose one to set custom values")
if timesteps is not None:
accepts_timesteps = "timesteps" in set(inspect.signature(scheduler.set_timesteps).parameters.keys())
if not accepts_timesteps:
raise ValueError(
f"The current scheduler class {scheduler.__class__}'s `set_timesteps` does not support custom"
f" timestep schedules. Please check whether you are using the correct scheduler."
)
scheduler.set_timesteps(timesteps=timesteps, device=device, **kwargs)
timesteps = scheduler.timesteps
num_inference_steps = len(timesteps)
elif sigmas is not None:
accept_sigmas = "sigmas" in set(inspect.signature(scheduler.set_timesteps).parameters.keys())
if not accept_sigmas:
raise ValueError(
f"The current scheduler class {scheduler.__class__}'s `set_timesteps` does not support custom"
f" sigmas schedules. Please check whether you are using the correct scheduler."
)
scheduler.set_timesteps(sigmas=sigmas, device=device, **kwargs)
timesteps = scheduler.timesteps
num_inference_steps = len(timesteps)
else:
scheduler.set_timesteps(num_inference_steps, device=device, **kwargs)
timesteps = scheduler.timesteps
return timesteps, num_inference_steps
class AuraFlowPipeline(DiffusionPipeline):
r"""
Args:
tokenizer (`T5TokenizerFast`):
Tokenizer of class
[T5Tokenizer](https://huggingface.co/docs/transformers/model_doc/t5#transformers.T5Tokenizer).
text_encoder ([`T5EncoderModel`]):
Frozen text-encoder. AuraFlow uses
[T5](https://huggingface.co/docs/transformers/model_doc/t5#transformers.T5EncoderModel), specifically the
[EleutherAI/pile-t5-xl](https://huggingface.co/EleutherAI/pile-t5-xl) variant.
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) Model to encode and decode images to and from latent representations.
transformer ([`AuraFlowTransformer2DModel`]):
Conditional Transformer (MMDiT and DiT) architecture to denoise the encoded image latents.
scheduler ([`FlowMatchEulerDiscreteScheduler`]):
A scheduler to be used in combination with `transformer` to denoise the encoded image latents.
"""
_optional_components = []
model_cpu_offload_seq = "text_encoder->transformer->vae"
def __init__(
self,
tokenizer: T5Tokenizer,
text_encoder: UMT5EncoderModel,
vae: AutoencoderKL,
transformer: AuraFlowTransformer2DModel,
scheduler: FlowMatchEulerDiscreteScheduler,
):
super().__init__()
self.register_modules(
tokenizer=tokenizer, text_encoder=text_encoder, vae=vae, transformer=transformer, scheduler=scheduler
)
self.vae_scale_factor = (
2 ** (len(self.vae.config.block_out_channels) - 1) if hasattr(self, "vae") and self.vae is not None else 8
)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor)
def check_inputs(
self,
prompt,
height,
width,
negative_prompt,
prompt_embeds=None,
negative_prompt_embeds=None,
prompt_attention_mask=None,
negative_prompt_attention_mask=None,
):
if height % 8 != 0 or width % 8 != 0:
raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.")
if prompt is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt is None and prompt_embeds is None:
raise ValueError(
"Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined."
)
elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
if prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
if negative_prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
if prompt_embeds is not None and prompt_attention_mask is None:
raise ValueError("Must provide `prompt_attention_mask` when specifying `prompt_embeds`.")
if negative_prompt_embeds is not None and negative_prompt_attention_mask is None:
raise ValueError("Must provide `negative_prompt_attention_mask` when specifying `negative_prompt_embeds`.")
if prompt_embeds is not None and negative_prompt_embeds is not None:
if prompt_embeds.shape != negative_prompt_embeds.shape:
raise ValueError(
"`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
f" {negative_prompt_embeds.shape}."
)
if prompt_attention_mask.shape != negative_prompt_attention_mask.shape:
raise ValueError(
"`prompt_attention_mask` and `negative_prompt_attention_mask` must have the same shape when passed directly, but"
f" got: `prompt_attention_mask` {prompt_attention_mask.shape} != `negative_prompt_attention_mask`"
f" {negative_prompt_attention_mask.shape}."
)
def encode_prompt(
self,
prompt: Union[str, List[str]],
negative_prompt: Union[str, List[str]] = None,
do_classifier_free_guidance: bool = True,
num_images_per_prompt: int = 1,
device: Optional[torch.device] = None,
prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
prompt_attention_mask: Optional[torch.Tensor] = None,
negative_prompt_attention_mask: Optional[torch.Tensor] = None,
max_sequence_length: int = 256,
):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `List[str]`, *optional*):
prompt to be encoded
negative_prompt (`str` or `List[str]`, *optional*):
The prompt not to guide the image generation. If not defined, one has to pass `negative_prompt_embeds`
instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is less than `1`).
do_classifier_free_guidance (`bool`, *optional*, defaults to `True`):
whether to use classifier free guidance or not
num_images_per_prompt (`int`, *optional*, defaults to 1):
number of images that should be generated per prompt
device: (`torch.device`, *optional*):
torch device to place the resulting embeddings on
prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
prompt_attention_mask (`torch.Tensor`, *optional*):
Pre-generated attention mask for text embeddings.
negative_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative text embeddings.
negative_prompt_attention_mask (`torch.Tensor`, *optional*):
Pre-generated attention mask for negative text embeddings.
max_sequence_length (`int`, defaults to 256): Maximum sequence length to use for the prompt.
"""
if device is None:
device = self._execution_device
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
max_length = max_sequence_length
if prompt_embeds is None:
text_inputs = self.tokenizer(
prompt,
truncation=True,
max_length=max_length,
padding="max_length",
return_tensors="pt",
)
text_input_ids = text_inputs["input_ids"]
untruncated_ids = self.tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = self.tokenizer.batch_decode(untruncated_ids[:, max_length - 1 : -1])
logger.warning(
"The following part of your input was truncated because T5 can only handle sequences up to"
f" {max_length} tokens: {removed_text}"
)
text_inputs = {k: v.to(device) for k, v in text_inputs.items()}
prompt_embeds = self.text_encoder(**text_inputs)[0]
prompt_attention_mask = text_inputs["attention_mask"].unsqueeze(-1).expand(prompt_embeds.shape)
prompt_embeds = prompt_embeds * prompt_attention_mask
if self.text_encoder is not None:
dtype = self.text_encoder.dtype
elif self.transformer is not None:
dtype = self.transformer.dtype
else:
dtype = None
prompt_embeds = prompt_embeds.to(dtype=dtype, device=device)
bs_embed, seq_len, _ = prompt_embeds.shape
# duplicate text embeddings and attention mask for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1)
prompt_embeds = prompt_embeds.view(bs_embed * num_images_per_prompt, seq_len, -1)
prompt_attention_mask = prompt_attention_mask.reshape(bs_embed, -1)
prompt_attention_mask = prompt_attention_mask.repeat(num_images_per_prompt, 1)
# get unconditional embeddings for classifier free guidance
if do_classifier_free_guidance and negative_prompt_embeds is None:
negative_prompt = negative_prompt or ""
uncond_tokens = [negative_prompt] * batch_size if isinstance(negative_prompt, str) else negative_prompt
max_length = prompt_embeds.shape[1]
uncond_input = self.tokenizer(
uncond_tokens,
truncation=True,
max_length=max_length,
padding="max_length",
return_tensors="pt",
)
uncond_input = {k: v.to(device) for k, v in uncond_input.items()}
negative_prompt_embeds = self.text_encoder(**uncond_input)[0]
negative_prompt_attention_mask = (
uncond_input["attention_mask"].unsqueeze(-1).expand(negative_prompt_embeds.shape)
)
negative_prompt_embeds = negative_prompt_embeds * negative_prompt_attention_mask
if do_classifier_free_guidance:
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = negative_prompt_embeds.shape[1]
negative_prompt_embeds = negative_prompt_embeds.to(dtype=dtype, device=device)
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt, 1)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len, -1)
negative_prompt_attention_mask = negative_prompt_attention_mask.reshape(bs_embed, -1)
negative_prompt_attention_mask = negative_prompt_attention_mask.repeat(num_images_per_prompt, 1)
else:
negative_prompt_embeds = None
negative_prompt_attention_mask = None
return prompt_embeds, prompt_attention_mask, negative_prompt_embeds, negative_prompt_attention_mask
# Copied from diffusers.pipelines.stable_diffusion_3.pipeline_stable_diffusion_3.StableDiffusion3Pipeline.prepare_latents
def prepare_latents(
self,
batch_size,
num_channels_latents,
height,
width,
dtype,
device,
generator,
latents=None,
):
if latents is not None:
return latents.to(device=device, dtype=dtype)
shape = (
batch_size,
num_channels_latents,
int(height) // self.vae_scale_factor,
int(width) // self.vae_scale_factor,
)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
return latents
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline.upcast_vae
def upcast_vae(self):
dtype = self.vae.dtype
self.vae.to(dtype=torch.float32)
use_torch_2_0_or_xformers = isinstance(
self.vae.decoder.mid_block.attentions[0].processor,
(
AttnProcessor2_0,
XFormersAttnProcessor,
FusedAttnProcessor2_0,
),
)
# if xformers or torch_2_0 is used attention block does not need
# to be in float32 which can save lots of memory
if use_torch_2_0_or_xformers:
self.vae.post_quant_conv.to(dtype)
self.vae.decoder.conv_in.to(dtype)
self.vae.decoder.mid_block.to(dtype)
@torch.no_grad()
@replace_example_docstring(EXAMPLE_DOC_STRING)
def __call__(
self,
prompt: Union[str, List[str]] = None,
negative_prompt: Union[str, List[str]] = None,
num_inference_steps: int = 50,
timesteps: List[int] = None,
sigmas: List[float] = None,
guidance_scale: float = 3.5,
num_images_per_prompt: Optional[int] = 1,
height: Optional[int] = 1024,
width: Optional[int] = 1024,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
prompt_embeds: Optional[torch.Tensor] = None,
prompt_attention_mask: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_attention_mask: Optional[torch.Tensor] = None,
max_sequence_length: int = 256,
output_type: Optional[str] = "pil",
return_dict: bool = True,
) -> Union[ImagePipelineOutput, Tuple]:
r"""
Function invoked when calling the pipeline for generation.
Args:
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide the image generation. If not defined, one has to pass `prompt_embeds`.
instead.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
height (`int`, *optional*, defaults to self.transformer.config.sample_size * self.vae_scale_factor):
The height in pixels of the generated image. This is set to 1024 by default for best results.
width (`int`, *optional*, defaults to self.transformer.config.sample_size * self.vae_scale_factor):
The width in pixels of the generated image. This is set to 1024 by default for best results.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
sigmas (`List[float]`, *optional*):
Custom sigmas used to override the timestep spacing strategy of the scheduler. If `sigmas` is passed,
`num_inference_steps` and `timesteps` must be `None`.
timesteps (`List[int]`, *optional*):
Custom timesteps to use for the denoising process with schedulers which support a `timesteps` argument
in their `set_timesteps` method. If not defined, the default behavior when `num_inference_steps` is
passed will be used. Must be in descending order.
guidance_scale (`float`, *optional*, defaults to 5.0):
Guidance scale as defined in [Classifier-Free Diffusion Guidance](https://arxiv.org/abs/2207.12598).
`guidance_scale` is defined as `w` of equation 2. of [Imagen
Paper](https://arxiv.org/pdf/2205.11487.pdf). Guidance scale is enabled by setting `guidance_scale >
1`. Higher guidance scale encourages to generate images that are closely linked to the text `prompt`,
usually at the expense of lower image quality.
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
One or a list of [torch generator(s)](https://pytorch.org/docs/stable/generated/torch.Generator.html)
to make generation deterministic.
latents (`torch.FloatTensor`, *optional*):
Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor will ge generated by sampling using the supplied random `generator`.
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
prompt_attention_mask (`torch.Tensor`, *optional*):
Pre-generated attention mask for text embeddings.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
negative_prompt_attention_mask (`torch.Tensor`, *optional*):
Pre-generated attention mask for negative text embeddings.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generate image. Choose between
[PIL](https://pillow.readthedocs.io/en/stable/): `PIL.Image.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] instead
of a plain tuple.
max_sequence_length (`int` defaults to 256): Maximum sequence length to use with the `prompt`.
Examples:
Returns: [`~pipelines.ImagePipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.ImagePipelineOutput`] is returned, otherwise a `tuple` is returned
where the first element is a list with the generated images.
"""
# 1. Check inputs. Raise error if not correct
height = height or self.transformer.config.sample_size * self.vae_scale_factor
width = width or self.transformer.config.sample_size * self.vae_scale_factor
self.check_inputs(
prompt,
height,
width,
negative_prompt,
prompt_embeds,
negative_prompt_embeds,
prompt_attention_mask,
negative_prompt_attention_mask,
)
# 2. Determine batch size.
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
do_classifier_free_guidance = guidance_scale > 1.0
# 3. Encode input prompt
(
prompt_embeds,
prompt_attention_mask,
negative_prompt_embeds,
negative_prompt_attention_mask,
) = self.encode_prompt(
prompt=prompt,
negative_prompt=negative_prompt,
do_classifier_free_guidance=do_classifier_free_guidance,
num_images_per_prompt=num_images_per_prompt,
device=device,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
prompt_attention_mask=prompt_attention_mask,
negative_prompt_attention_mask=negative_prompt_attention_mask,
max_sequence_length=max_sequence_length,
)
if do_classifier_free_guidance:
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds], dim=0)
# 4. Prepare timesteps
# sigmas = np.linspace(1.0, 1 / num_inference_steps, num_inference_steps)
timesteps, num_inference_steps = retrieve_timesteps(
self.scheduler, num_inference_steps, device, timesteps, sigmas
)
# 5. Prepare latents.
latent_channels = self.transformer.config.in_channels
latents = self.prepare_latents(
batch_size * num_images_per_prompt,
latent_channels,
height,
width,
prompt_embeds.dtype,
device,
generator,
latents,
)
# 6. Denoising loop
num_warmup_steps = max(len(timesteps) - num_inference_steps * self.scheduler.order, 0)
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
# aura use timestep value between 0 and 1, with t=1 as noise and t=0 as the image
# broadcast to batch dimension in a way that's compatible with ONNX/Core ML
timestep = torch.tensor([t / 1000]).expand(latent_model_input.shape[0])
timestep = timestep.to(latents.device, dtype=latents.dtype)
# predict noise model_output
noise_pred = self.transformer(
latent_model_input,
encoder_hidden_states=prompt_embeds,
timestep=timestep,
return_dict=False,
)[0]
# perform guidance
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, return_dict=False)[0]
# call the callback, if provided
if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0):
progress_bar.update()
if output_type == "latent":
image = latents
else:
# make sure the VAE is in float32 mode, as it overflows in float16
needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast
if needs_upcasting:
self.upcast_vae()
latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype)
image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0]
image = self.image_processor.postprocess(image, output_type=output_type)
# Offload all models
self.maybe_free_model_hooks()
if not return_dict:
return (image,)
return ImagePipelineOutput(images=image)
|
diffusers/src/diffusers/pipelines/aura_flow/pipeline_aura_flow.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/aura_flow/pipeline_aura_flow.py",
"repo_id": "diffusers",
"token_count": 12689
}
| 126
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import List, Optional, Tuple, Union
import torch
from ...schedulers import DDIMScheduler
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
class DDIMPipeline(DiffusionPipeline):
r"""
Pipeline for image generation.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
Parameters:
unet ([`UNet2DModel`]):
A `UNet2DModel` to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image. Can be one of
[`DDPMScheduler`], or [`DDIMScheduler`].
"""
model_cpu_offload_seq = "unet"
def __init__(self, unet, scheduler):
super().__init__()
# make sure scheduler can always be converted to DDIM
scheduler = DDIMScheduler.from_config(scheduler.config)
self.register_modules(unet=unet, scheduler=scheduler)
@torch.no_grad()
def __call__(
self,
batch_size: int = 1,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
eta: float = 0.0,
num_inference_steps: int = 50,
use_clipped_model_output: Optional[bool] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
) -> Union[ImagePipelineOutput, Tuple]:
r"""
The call function to the pipeline for generation.
Args:
batch_size (`int`, *optional*, defaults to 1):
The number of images to generate.
generator (`torch.Generator`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers. A value of `0` corresponds to
DDIM and `1` corresponds to DDPM.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
use_clipped_model_output (`bool`, *optional*, defaults to `None`):
If `True` or `False`, see documentation for [`DDIMScheduler.step`]. If `None`, nothing is passed
downstream to the scheduler (use `None` for schedulers which don't support this argument).
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.ImagePipelineOutput`] instead of a plain tuple.
Example:
```py
>>> from diffusers import DDIMPipeline
>>> import PIL.Image
>>> import numpy as np
>>> # load model and scheduler
>>> pipe = DDIMPipeline.from_pretrained("fusing/ddim-lsun-bedroom")
>>> # run pipeline in inference (sample random noise and denoise)
>>> image = pipe(eta=0.0, num_inference_steps=50)
>>> # process image to PIL
>>> image_processed = image.cpu().permute(0, 2, 3, 1)
>>> image_processed = (image_processed + 1.0) * 127.5
>>> image_processed = image_processed.numpy().astype(np.uint8)
>>> image_pil = PIL.Image.fromarray(image_processed[0])
>>> # save image
>>> image_pil.save("test.png")
```
Returns:
[`~pipelines.ImagePipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.ImagePipelineOutput`] is returned, otherwise a `tuple` is
returned where the first element is a list with the generated images
"""
# Sample gaussian noise to begin loop
if isinstance(self.unet.config.sample_size, int):
image_shape = (
batch_size,
self.unet.config.in_channels,
self.unet.config.sample_size,
self.unet.config.sample_size,
)
else:
image_shape = (batch_size, self.unet.config.in_channels, *self.unet.config.sample_size)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
image = randn_tensor(image_shape, generator=generator, device=self._execution_device, dtype=self.unet.dtype)
# set step values
self.scheduler.set_timesteps(num_inference_steps)
for t in self.progress_bar(self.scheduler.timesteps):
# 1. predict noise model_output
model_output = self.unet(image, t).sample
# 2. predict previous mean of image x_t-1 and add variance depending on eta
# eta corresponds to η in paper and should be between [0, 1]
# do x_t -> x_t-1
image = self.scheduler.step(
model_output, t, image, eta=eta, use_clipped_model_output=use_clipped_model_output, generator=generator
).prev_sample
image = (image / 2 + 0.5).clamp(0, 1)
image = image.cpu().permute(0, 2, 3, 1).numpy()
if output_type == "pil":
image = self.numpy_to_pil(image)
if not return_dict:
return (image,)
return ImagePipelineOutput(images=image)
|
diffusers/src/diffusers/pipelines/ddim/pipeline_ddim.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/ddim/pipeline_ddim.py",
"repo_id": "diffusers",
"token_count": 2748
}
| 127
|
from typing import TYPE_CHECKING
from ....utils import (
DIFFUSERS_SLOW_IMPORT,
OptionalDependencyNotAvailable,
_LazyModule,
get_objects_from_module,
is_torch_available,
is_transformers_available,
)
_dummy_objects = {}
_import_structure = {}
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ....utils import dummy_torch_and_transformers_objects
_dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
else:
_import_structure["modeling_roberta_series"] = ["RobertaSeriesModelWithTransformation"]
_import_structure["pipeline_alt_diffusion"] = ["AltDiffusionPipeline"]
_import_structure["pipeline_alt_diffusion_img2img"] = ["AltDiffusionImg2ImgPipeline"]
_import_structure["pipeline_output"] = ["AltDiffusionPipelineOutput"]
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ....utils.dummy_torch_and_transformers_objects import *
else:
from .modeling_roberta_series import RobertaSeriesModelWithTransformation
from .pipeline_alt_diffusion import AltDiffusionPipeline
from .pipeline_alt_diffusion_img2img import AltDiffusionImg2ImgPipeline
from .pipeline_output import AltDiffusionPipelineOutput
else:
import sys
sys.modules[__name__] = _LazyModule(
__name__,
globals()["__file__"],
_import_structure,
module_spec=__spec__,
)
for name, value in _dummy_objects.items():
setattr(sys.modules[__name__], name, value)
|
diffusers/src/diffusers/pipelines/deprecated/alt_diffusion/__init__.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/deprecated/alt_diffusion/__init__.py",
"repo_id": "diffusers",
"token_count": 685
}
| 128
|
# flake8: noqa
from typing import TYPE_CHECKING
from ....utils import (
DIFFUSERS_SLOW_IMPORT,
_LazyModule,
is_note_seq_available,
OptionalDependencyNotAvailable,
is_torch_available,
is_transformers_available,
get_objects_from_module,
)
_dummy_objects = {}
_import_structure = {}
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ....utils import dummy_torch_and_transformers_objects # noqa F403
_dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
else:
_import_structure["continous_encoder"] = ["SpectrogramContEncoder"]
_import_structure["notes_encoder"] = ["SpectrogramNotesEncoder"]
_import_structure["pipeline_spectrogram_diffusion"] = [
"SpectrogramContEncoder",
"SpectrogramDiffusionPipeline",
"T5FilmDecoder",
]
try:
if not (is_transformers_available() and is_torch_available() and is_note_seq_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ....utils import dummy_transformers_and_torch_and_note_seq_objects
_dummy_objects.update(get_objects_from_module(dummy_transformers_and_torch_and_note_seq_objects))
else:
_import_structure["midi_utils"] = ["MidiProcessor"]
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ....utils.dummy_torch_and_transformers_objects import *
else:
from .pipeline_spectrogram_diffusion import SpectrogramDiffusionPipeline
from .pipeline_spectrogram_diffusion import SpectrogramContEncoder
from .pipeline_spectrogram_diffusion import SpectrogramNotesEncoder
from .pipeline_spectrogram_diffusion import T5FilmDecoder
try:
if not (is_transformers_available() and is_torch_available() and is_note_seq_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ....utils.dummy_transformers_and_torch_and_note_seq_objects import *
else:
from .midi_utils import MidiProcessor
else:
import sys
sys.modules[__name__] = _LazyModule(
__name__,
globals()["__file__"],
_import_structure,
module_spec=__spec__,
)
for name, value in _dummy_objects.items():
setattr(sys.modules[__name__], name, value)
|
diffusers/src/diffusers/pipelines/deprecated/spectrogram_diffusion/__init__.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/deprecated/spectrogram_diffusion/__init__.py",
"repo_id": "diffusers",
"token_count": 985
}
| 129
|
import inspect
from typing import Callable, List, Optional, Union
import PIL.Image
import torch
from transformers import CLIPImageProcessor, CLIPTextModel, CLIPTokenizer, CLIPVisionModel
from ....models import AutoencoderKL, UNet2DConditionModel
from ....schedulers import KarrasDiffusionSchedulers
from ....utils import logging
from ...pipeline_utils import DiffusionPipeline
from .pipeline_versatile_diffusion_dual_guided import VersatileDiffusionDualGuidedPipeline
from .pipeline_versatile_diffusion_image_variation import VersatileDiffusionImageVariationPipeline
from .pipeline_versatile_diffusion_text_to_image import VersatileDiffusionTextToImagePipeline
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
class VersatileDiffusionPipeline(DiffusionPipeline):
r"""
Pipeline for text-to-image generation using Stable Diffusion.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.
text_encoder ([`~transformers.CLIPTextModel`]):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
tokenizer ([`~transformers.CLIPTokenizer`]):
A `CLIPTokenizer` to tokenize text.
unet ([`UNet2DConditionModel`]):
A `UNet2DConditionModel` to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
safety_checker ([`StableDiffusionSafetyChecker`]):
Classification module that estimates whether generated images could be considered offensive or harmful.
Please refer to the [model card](https://huggingface.co/runwayml/stable-diffusion-v1-5) for more details
about a model's potential harms.
feature_extractor ([`~transformers.CLIPImageProcessor`]):
A `CLIPImageProcessor` to extract features from generated images; used as inputs to the `safety_checker`.
"""
tokenizer: CLIPTokenizer
image_feature_extractor: CLIPImageProcessor
text_encoder: CLIPTextModel
image_encoder: CLIPVisionModel
image_unet: UNet2DConditionModel
text_unet: UNet2DConditionModel
vae: AutoencoderKL
scheduler: KarrasDiffusionSchedulers
def __init__(
self,
tokenizer: CLIPTokenizer,
image_feature_extractor: CLIPImageProcessor,
text_encoder: CLIPTextModel,
image_encoder: CLIPVisionModel,
image_unet: UNet2DConditionModel,
text_unet: UNet2DConditionModel,
vae: AutoencoderKL,
scheduler: KarrasDiffusionSchedulers,
):
super().__init__()
self.register_modules(
tokenizer=tokenizer,
image_feature_extractor=image_feature_extractor,
text_encoder=text_encoder,
image_encoder=image_encoder,
image_unet=image_unet,
text_unet=text_unet,
vae=vae,
scheduler=scheduler,
)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
@torch.no_grad()
def image_variation(
self,
image: Union[torch.Tensor, PIL.Image.Image],
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 7.5,
negative_prompt: Optional[Union[str, List[str]]] = None,
num_images_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.Tensor], None]] = None,
callback_steps: int = 1,
):
r"""
The call function to the pipeline for generation.
Args:
image (`PIL.Image.Image`, `List[PIL.Image.Image]` or `torch.Tensor`):
The image prompt or prompts to guide the image generation.
height (`int`, *optional*, defaults to `self.image_unet.config.sample_size * self.vae_scale_factor`):
The height in pixels of the generated image.
width (`int`, *optional*, defaults to `self.image_unet.config.sample_size * self.vae_scale_factor`):
The width in pixels of the generated image.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 7.5):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
callback (`Callable`, *optional*):
A function that calls every `callback_steps` steps during inference. The function is called with the
following arguments: `callback(step: int, timestep: int, latents: torch.Tensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function is called. If not specified, the callback is called at
every step.
Examples:
```py
>>> from diffusers import VersatileDiffusionPipeline
>>> import torch
>>> import requests
>>> from io import BytesIO
>>> from PIL import Image
>>> # let's download an initial image
>>> url = "https://huggingface.co/datasets/diffusers/images/resolve/main/benz.jpg"
>>> response = requests.get(url)
>>> image = Image.open(BytesIO(response.content)).convert("RGB")
>>> pipe = VersatileDiffusionPipeline.from_pretrained(
... "shi-labs/versatile-diffusion", torch_dtype=torch.float16
... )
>>> pipe = pipe.to("cuda")
>>> generator = torch.Generator(device="cuda").manual_seed(0)
>>> image = pipe.image_variation(image, generator=generator).images[0]
>>> image.save("./car_variation.png")
```
Returns:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] is returned,
otherwise a `tuple` is returned where the first element is a list with the generated images and the
second element is a list of `bool`s indicating whether the corresponding generated image contains
"not-safe-for-work" (nsfw) content.
"""
expected_components = inspect.signature(VersatileDiffusionImageVariationPipeline.__init__).parameters.keys()
components = {name: component for name, component in self.components.items() if name in expected_components}
return VersatileDiffusionImageVariationPipeline(**components)(
image=image,
height=height,
width=width,
num_inference_steps=num_inference_steps,
guidance_scale=guidance_scale,
negative_prompt=negative_prompt,
num_images_per_prompt=num_images_per_prompt,
eta=eta,
generator=generator,
latents=latents,
output_type=output_type,
return_dict=return_dict,
callback=callback,
callback_steps=callback_steps,
)
@torch.no_grad()
def text_to_image(
self,
prompt: Union[str, List[str]],
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 7.5,
negative_prompt: Optional[Union[str, List[str]]] = None,
num_images_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.Tensor], None]] = None,
callback_steps: int = 1,
):
r"""
The call function to the pipeline for generation.
Args:
prompt (`str` or `List[str]`):
The prompt or prompts to guide image generation.
height (`int`, *optional*, defaults to `self.image_unet.config.sample_size * self.vae_scale_factor`):
The height in pixels of the generated image.
width (`int`, *optional*, defaults to `self.image_unet.config.sample_size * self.vae_scale_factor`):
The width in pixels of the generated image.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 7.5):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
callback (`Callable`, *optional*):
A function that calls every `callback_steps` steps during inference. The function is called with the
following arguments: `callback(step: int, timestep: int, latents: torch.Tensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function is called. If not specified, the callback is called at
every step.
Examples:
```py
>>> from diffusers import VersatileDiffusionPipeline
>>> import torch
>>> pipe = VersatileDiffusionPipeline.from_pretrained(
... "shi-labs/versatile-diffusion", torch_dtype=torch.float16
... )
>>> pipe = pipe.to("cuda")
>>> generator = torch.Generator(device="cuda").manual_seed(0)
>>> image = pipe.text_to_image("an astronaut riding on a horse on mars", generator=generator).images[0]
>>> image.save("./astronaut.png")
```
Returns:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] is returned,
otherwise a `tuple` is returned where the first element is a list with the generated images and the
second element is a list of `bool`s indicating whether the corresponding generated image contains
"not-safe-for-work" (nsfw) content.
"""
expected_components = inspect.signature(VersatileDiffusionTextToImagePipeline.__init__).parameters.keys()
components = {name: component for name, component in self.components.items() if name in expected_components}
temp_pipeline = VersatileDiffusionTextToImagePipeline(**components)
output = temp_pipeline(
prompt=prompt,
height=height,
width=width,
num_inference_steps=num_inference_steps,
guidance_scale=guidance_scale,
negative_prompt=negative_prompt,
num_images_per_prompt=num_images_per_prompt,
eta=eta,
generator=generator,
latents=latents,
output_type=output_type,
return_dict=return_dict,
callback=callback,
callback_steps=callback_steps,
)
# swap the attention blocks back to the original state
temp_pipeline._swap_unet_attention_blocks()
return output
@torch.no_grad()
def dual_guided(
self,
prompt: Union[PIL.Image.Image, List[PIL.Image.Image]],
image: Union[str, List[str]],
text_to_image_strength: float = 0.5,
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 7.5,
num_images_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.Tensor], None]] = None,
callback_steps: int = 1,
):
r"""
The call function to the pipeline for generation.
Args:
prompt (`str` or `List[str]`):
The prompt or prompts to guide image generation.
height (`int`, *optional*, defaults to `self.image_unet.config.sample_size * self.vae_scale_factor`):
The height in pixels of the generated image.
width (`int`, *optional*, defaults to `self.image_unet.config.sample_size * self.vae_scale_factor`):
The width in pixels of the generated image.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 7.5):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
callback (`Callable`, *optional*):
A function that calls every `callback_steps` steps during inference. The function is called with the
following arguments: `callback(step: int, timestep: int, latents: torch.Tensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function is called. If not specified, the callback is called at
every step.
Examples:
```py
>>> from diffusers import VersatileDiffusionPipeline
>>> import torch
>>> import requests
>>> from io import BytesIO
>>> from PIL import Image
>>> # let's download an initial image
>>> url = "https://huggingface.co/datasets/diffusers/images/resolve/main/benz.jpg"
>>> response = requests.get(url)
>>> image = Image.open(BytesIO(response.content)).convert("RGB")
>>> text = "a red car in the sun"
>>> pipe = VersatileDiffusionPipeline.from_pretrained(
... "shi-labs/versatile-diffusion", torch_dtype=torch.float16
... )
>>> pipe = pipe.to("cuda")
>>> generator = torch.Generator(device="cuda").manual_seed(0)
>>> text_to_image_strength = 0.75
>>> image = pipe.dual_guided(
... prompt=text, image=image, text_to_image_strength=text_to_image_strength, generator=generator
... ).images[0]
>>> image.save("./car_variation.png")
```
Returns:
[`~pipelines.ImagePipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.ImagePipelineOutput`] is returned, otherwise a `tuple` is
returned where the first element is a list with the generated images.
"""
expected_components = inspect.signature(VersatileDiffusionDualGuidedPipeline.__init__).parameters.keys()
components = {name: component for name, component in self.components.items() if name in expected_components}
temp_pipeline = VersatileDiffusionDualGuidedPipeline(**components)
output = temp_pipeline(
prompt=prompt,
image=image,
text_to_image_strength=text_to_image_strength,
height=height,
width=width,
num_inference_steps=num_inference_steps,
guidance_scale=guidance_scale,
num_images_per_prompt=num_images_per_prompt,
eta=eta,
generator=generator,
latents=latents,
output_type=output_type,
return_dict=return_dict,
callback=callback,
callback_steps=callback_steps,
)
temp_pipeline._revert_dual_attention()
return output
|
diffusers/src/diffusers/pipelines/deprecated/versatile_diffusion/pipeline_versatile_diffusion.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/deprecated/versatile_diffusion/pipeline_versatile_diffusion.py",
"repo_id": "diffusers",
"token_count": 9147
}
| 130
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import inspect
from typing import List, Optional, Tuple, Union
import torch
import torch.nn as nn
import torch.utils.checkpoint
from transformers import PretrainedConfig, PreTrainedModel, PreTrainedTokenizer
from transformers.activations import ACT2FN
from transformers.modeling_outputs import BaseModelOutput
from transformers.utils import logging
from ...models import AutoencoderKL, UNet2DConditionModel, UNet2DModel, VQModel
from ...schedulers import DDIMScheduler, LMSDiscreteScheduler, PNDMScheduler
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
class LDMTextToImagePipeline(DiffusionPipeline):
r"""
Pipeline for text-to-image generation using latent diffusion.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
Parameters:
vqvae ([`VQModel`]):
Vector-quantized (VQ) model to encode and decode images to and from latent representations.
bert ([`LDMBertModel`]):
Text-encoder model based on [`~transformers.BERT`].
tokenizer ([`~transformers.BertTokenizer`]):
A `BertTokenizer` to tokenize text.
unet ([`UNet2DConditionModel`]):
A `UNet2DConditionModel` to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
"""
model_cpu_offload_seq = "bert->unet->vqvae"
def __init__(
self,
vqvae: Union[VQModel, AutoencoderKL],
bert: PreTrainedModel,
tokenizer: PreTrainedTokenizer,
unet: Union[UNet2DModel, UNet2DConditionModel],
scheduler: Union[DDIMScheduler, PNDMScheduler, LMSDiscreteScheduler],
):
super().__init__()
self.register_modules(vqvae=vqvae, bert=bert, tokenizer=tokenizer, unet=unet, scheduler=scheduler)
self.vae_scale_factor = 2 ** (len(self.vqvae.config.block_out_channels) - 1)
@torch.no_grad()
def __call__(
self,
prompt: Union[str, List[str]],
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: Optional[int] = 50,
guidance_scale: Optional[float] = 1.0,
eta: Optional[float] = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
**kwargs,
) -> Union[Tuple, ImagePipelineOutput]:
r"""
The call function to the pipeline for generation.
Args:
prompt (`str` or `List[str]`):
The prompt or prompts to guide the image generation.
height (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
The height in pixels of the generated image.
width (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
The width in pixels of the generated image.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 1.0):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
generator (`torch.Generator`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`ImagePipelineOutput`] instead of a plain tuple.
Example:
```py
>>> from diffusers import DiffusionPipeline
>>> # load model and scheduler
>>> ldm = DiffusionPipeline.from_pretrained("CompVis/ldm-text2im-large-256")
>>> # run pipeline in inference (sample random noise and denoise)
>>> prompt = "A painting of a squirrel eating a burger"
>>> images = ldm([prompt], num_inference_steps=50, eta=0.3, guidance_scale=6).images
>>> # save images
>>> for idx, image in enumerate(images):
... image.save(f"squirrel-{idx}.png")
```
Returns:
[`~pipelines.ImagePipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.ImagePipelineOutput`] is returned, otherwise a `tuple` is
returned where the first element is a list with the generated images.
"""
# 0. Default height and width to unet
height = height or self.unet.config.sample_size * self.vae_scale_factor
width = width or self.unet.config.sample_size * self.vae_scale_factor
if isinstance(prompt, str):
batch_size = 1
elif isinstance(prompt, list):
batch_size = len(prompt)
else:
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
if height % 8 != 0 or width % 8 != 0:
raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.")
# get unconditional embeddings for classifier free guidance
if guidance_scale != 1.0:
uncond_input = self.tokenizer(
[""] * batch_size, padding="max_length", max_length=77, truncation=True, return_tensors="pt"
)
negative_prompt_embeds = self.bert(uncond_input.input_ids.to(self._execution_device))[0]
# get prompt text embeddings
text_input = self.tokenizer(prompt, padding="max_length", max_length=77, truncation=True, return_tensors="pt")
prompt_embeds = self.bert(text_input.input_ids.to(self._execution_device))[0]
# get the initial random noise unless the user supplied it
latents_shape = (batch_size, self.unet.config.in_channels, height // 8, width // 8)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
if latents is None:
latents = randn_tensor(
latents_shape, generator=generator, device=self._execution_device, dtype=prompt_embeds.dtype
)
else:
if latents.shape != latents_shape:
raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {latents_shape}")
latents = latents.to(self._execution_device)
self.scheduler.set_timesteps(num_inference_steps)
# prepare extra kwargs for the scheduler step, since not all schedulers have the same signature
accepts_eta = "eta" in set(inspect.signature(self.scheduler.step).parameters.keys())
extra_kwargs = {}
if accepts_eta:
extra_kwargs["eta"] = eta
for t in self.progress_bar(self.scheduler.timesteps):
if guidance_scale == 1.0:
# guidance_scale of 1 means no guidance
latents_input = latents
context = prompt_embeds
else:
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
latents_input = torch.cat([latents] * 2)
context = torch.cat([negative_prompt_embeds, prompt_embeds])
# predict the noise residual
noise_pred = self.unet(latents_input, t, encoder_hidden_states=context).sample
# perform guidance
if guidance_scale != 1.0:
noise_pred_uncond, noise_prediction_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_prediction_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, **extra_kwargs).prev_sample
# scale and decode the image latents with vae
latents = 1 / self.vqvae.config.scaling_factor * latents
image = self.vqvae.decode(latents).sample
image = (image / 2 + 0.5).clamp(0, 1)
image = image.cpu().permute(0, 2, 3, 1).numpy()
if output_type == "pil":
image = self.numpy_to_pil(image)
if not return_dict:
return (image,)
return ImagePipelineOutput(images=image)
################################################################################
# Code for the text transformer model
################################################################################
""" PyTorch LDMBERT model."""
logger = logging.get_logger(__name__)
LDMBERT_PRETRAINED_MODEL_ARCHIVE_LIST = [
"ldm-bert",
# See all LDMBert models at https://huggingface.co/models?filter=ldmbert
]
LDMBERT_PRETRAINED_CONFIG_ARCHIVE_MAP = {
"ldm-bert": "https://huggingface.co/valhalla/ldm-bert/blob/main/config.json",
}
""" LDMBERT model configuration"""
class LDMBertConfig(PretrainedConfig):
model_type = "ldmbert"
keys_to_ignore_at_inference = ["past_key_values"]
attribute_map = {"num_attention_heads": "encoder_attention_heads", "hidden_size": "d_model"}
def __init__(
self,
vocab_size=30522,
max_position_embeddings=77,
encoder_layers=32,
encoder_ffn_dim=5120,
encoder_attention_heads=8,
head_dim=64,
encoder_layerdrop=0.0,
activation_function="gelu",
d_model=1280,
dropout=0.1,
attention_dropout=0.0,
activation_dropout=0.0,
init_std=0.02,
classifier_dropout=0.0,
scale_embedding=False,
use_cache=True,
pad_token_id=0,
**kwargs,
):
self.vocab_size = vocab_size
self.max_position_embeddings = max_position_embeddings
self.d_model = d_model
self.encoder_ffn_dim = encoder_ffn_dim
self.encoder_layers = encoder_layers
self.encoder_attention_heads = encoder_attention_heads
self.head_dim = head_dim
self.dropout = dropout
self.attention_dropout = attention_dropout
self.activation_dropout = activation_dropout
self.activation_function = activation_function
self.init_std = init_std
self.encoder_layerdrop = encoder_layerdrop
self.classifier_dropout = classifier_dropout
self.use_cache = use_cache
self.num_hidden_layers = encoder_layers
self.scale_embedding = scale_embedding # scale factor will be sqrt(d_model) if True
super().__init__(pad_token_id=pad_token_id, **kwargs)
def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None):
"""
Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`.
"""
bsz, src_len = mask.size()
tgt_len = tgt_len if tgt_len is not None else src_len
expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype)
inverted_mask = 1.0 - expanded_mask
return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min)
# Copied from transformers.models.bart.modeling_bart.BartAttention with Bart->LDMBert
class LDMBertAttention(nn.Module):
"""Multi-headed attention from 'Attention Is All You Need' paper"""
def __init__(
self,
embed_dim: int,
num_heads: int,
head_dim: int,
dropout: float = 0.0,
is_decoder: bool = False,
bias: bool = False,
):
super().__init__()
self.embed_dim = embed_dim
self.num_heads = num_heads
self.dropout = dropout
self.head_dim = head_dim
self.inner_dim = head_dim * num_heads
self.scaling = self.head_dim**-0.5
self.is_decoder = is_decoder
self.k_proj = nn.Linear(embed_dim, self.inner_dim, bias=bias)
self.v_proj = nn.Linear(embed_dim, self.inner_dim, bias=bias)
self.q_proj = nn.Linear(embed_dim, self.inner_dim, bias=bias)
self.out_proj = nn.Linear(self.inner_dim, embed_dim)
def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
def forward(
self,
hidden_states: torch.Tensor,
key_value_states: Optional[torch.Tensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.Tensor] = None,
layer_head_mask: Optional[torch.Tensor] = None,
output_attentions: bool = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
"""Input shape: Batch x Time x Channel"""
# if key_value_states are provided this layer is used as a cross-attention layer
# for the decoder
is_cross_attention = key_value_states is not None
bsz, tgt_len, _ = hidden_states.size()
# get query proj
query_states = self.q_proj(hidden_states) * self.scaling
# get key, value proj
if is_cross_attention and past_key_value is not None:
# reuse k,v, cross_attentions
key_states = past_key_value[0]
value_states = past_key_value[1]
elif is_cross_attention:
# cross_attentions
key_states = self._shape(self.k_proj(key_value_states), -1, bsz)
value_states = self._shape(self.v_proj(key_value_states), -1, bsz)
elif past_key_value is not None:
# reuse k, v, self_attention
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
key_states = torch.cat([past_key_value[0], key_states], dim=2)
value_states = torch.cat([past_key_value[1], value_states], dim=2)
else:
# self_attention
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
if self.is_decoder:
# if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states.
# Further calls to cross_attention layer can then reuse all cross-attention
# key/value_states (first "if" case)
# if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of
# all previous decoder key/value_states. Further calls to uni-directional self-attention
# can concat previous decoder key/value_states to current projected key/value_states (third "elif" case)
# if encoder bi-directional self-attention `past_key_value` is always `None`
past_key_value = (key_states, value_states)
proj_shape = (bsz * self.num_heads, -1, self.head_dim)
query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape)
key_states = key_states.view(*proj_shape)
value_states = value_states.view(*proj_shape)
src_len = key_states.size(1)
attn_weights = torch.bmm(query_states, key_states.transpose(1, 2))
if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len):
raise ValueError(
f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is"
f" {attn_weights.size()}"
)
if attention_mask is not None:
if attention_mask.size() != (bsz, 1, tgt_len, src_len):
raise ValueError(
f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}"
)
attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len, src_len) + attention_mask
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
attn_weights = nn.functional.softmax(attn_weights, dim=-1)
if layer_head_mask is not None:
if layer_head_mask.size() != (self.num_heads,):
raise ValueError(
f"Head mask for a single layer should be of size {(self.num_heads,)}, but is"
f" {layer_head_mask.size()}"
)
attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
if output_attentions:
# this operation is a bit awkward, but it's required to
# make sure that attn_weights keeps its gradient.
# In order to do so, attn_weights have to be reshaped
# twice and have to be reused in the following
attn_weights_reshaped = attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
attn_weights = attn_weights_reshaped.view(bsz * self.num_heads, tgt_len, src_len)
else:
attn_weights_reshaped = None
attn_probs = nn.functional.dropout(attn_weights, p=self.dropout, training=self.training)
attn_output = torch.bmm(attn_probs, value_states)
if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim)
attn_output = attn_output.transpose(1, 2)
# Use the `embed_dim` from the config (stored in the class) rather than `hidden_state` because `attn_output` can be
# partitioned across GPUs when using tensor-parallelism.
attn_output = attn_output.reshape(bsz, tgt_len, self.inner_dim)
attn_output = self.out_proj(attn_output)
return attn_output, attn_weights_reshaped, past_key_value
class LDMBertEncoderLayer(nn.Module):
def __init__(self, config: LDMBertConfig):
super().__init__()
self.embed_dim = config.d_model
self.self_attn = LDMBertAttention(
embed_dim=self.embed_dim,
num_heads=config.encoder_attention_heads,
head_dim=config.head_dim,
dropout=config.attention_dropout,
)
self.self_attn_layer_norm = nn.LayerNorm(self.embed_dim)
self.dropout = config.dropout
self.activation_fn = ACT2FN[config.activation_function]
self.activation_dropout = config.activation_dropout
self.fc1 = nn.Linear(self.embed_dim, config.encoder_ffn_dim)
self.fc2 = nn.Linear(config.encoder_ffn_dim, self.embed_dim)
self.final_layer_norm = nn.LayerNorm(self.embed_dim)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: torch.Tensor,
layer_head_mask: torch.Tensor,
output_attentions: Optional[bool] = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor]]:
"""
Args:
hidden_states (`torch.Tensor`): input to the layer of shape `(seq_len, batch, embed_dim)`
attention_mask (`torch.Tensor`): attention mask of size
`(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values.
layer_head_mask (`torch.Tensor`): mask for attention heads in a given layer of size
`(encoder_attention_heads,)`.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
"""
residual = hidden_states
hidden_states = self.self_attn_layer_norm(hidden_states)
hidden_states, attn_weights, _ = self.self_attn(
hidden_states=hidden_states,
attention_mask=attention_mask,
layer_head_mask=layer_head_mask,
output_attentions=output_attentions,
)
hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training)
hidden_states = residual + hidden_states
residual = hidden_states
hidden_states = self.final_layer_norm(hidden_states)
hidden_states = self.activation_fn(self.fc1(hidden_states))
hidden_states = nn.functional.dropout(hidden_states, p=self.activation_dropout, training=self.training)
hidden_states = self.fc2(hidden_states)
hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training)
hidden_states = residual + hidden_states
if hidden_states.dtype == torch.float16 and (
torch.isinf(hidden_states).any() or torch.isnan(hidden_states).any()
):
clamp_value = torch.finfo(hidden_states.dtype).max - 1000
hidden_states = torch.clamp(hidden_states, min=-clamp_value, max=clamp_value)
outputs = (hidden_states,)
if output_attentions:
outputs += (attn_weights,)
return outputs
# Copied from transformers.models.bart.modeling_bart.BartPretrainedModel with Bart->LDMBert
class LDMBertPreTrainedModel(PreTrainedModel):
config_class = LDMBertConfig
base_model_prefix = "model"
_supports_gradient_checkpointing = True
_keys_to_ignore_on_load_unexpected = [r"encoder\.version", r"decoder\.version"]
def _init_weights(self, module):
std = self.config.init_std
if isinstance(module, nn.Linear):
module.weight.data.normal_(mean=0.0, std=std)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.Embedding):
module.weight.data.normal_(mean=0.0, std=std)
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
def _set_gradient_checkpointing(self, module, value=False):
if isinstance(module, (LDMBertEncoder,)):
module.gradient_checkpointing = value
@property
def dummy_inputs(self):
pad_token = self.config.pad_token_id
input_ids = torch.tensor([[0, 6, 10, 4, 2], [0, 8, 12, 2, pad_token]], device=self.device)
dummy_inputs = {
"attention_mask": input_ids.ne(pad_token),
"input_ids": input_ids,
}
return dummy_inputs
class LDMBertEncoder(LDMBertPreTrainedModel):
"""
Transformer encoder consisting of *config.encoder_layers* self attention layers. Each layer is a
[`LDMBertEncoderLayer`].
Args:
config: LDMBertConfig
embed_tokens (nn.Embedding): output embedding
"""
def __init__(self, config: LDMBertConfig):
super().__init__(config)
self.dropout = config.dropout
embed_dim = config.d_model
self.padding_idx = config.pad_token_id
self.max_source_positions = config.max_position_embeddings
self.embed_tokens = nn.Embedding(config.vocab_size, embed_dim)
self.embed_positions = nn.Embedding(config.max_position_embeddings, embed_dim)
self.layers = nn.ModuleList([LDMBertEncoderLayer(config) for _ in range(config.encoder_layers)])
self.layer_norm = nn.LayerNorm(embed_dim)
self.gradient_checkpointing = False
# Initialize weights and apply final processing
self.post_init()
def get_input_embeddings(self):
return self.embed_tokens
def set_input_embeddings(self, value):
self.embed_tokens = value
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
head_mask: Optional[torch.Tensor] = None,
inputs_embeds: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutput]:
r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you
provide it.
Indices can be obtained using [`BartTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
head_mask (`torch.Tensor` of shape `(encoder_layers, encoder_attention_heads)`, *optional*):
Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`:
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
inputs_embeds (`torch.Tensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation.
This is useful if you want more control over how to convert `input_ids` indices into associated vectors
than the model's internal embedding lookup matrix.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors
for more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.BaseModelOutput`] instead of a plain tuple.
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
# retrieve input_ids and inputs_embeds
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
input_shape = input_ids.size()
input_ids = input_ids.view(-1, input_shape[-1])
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
seq_len = input_shape[1]
if position_ids is None:
position_ids = torch.arange(seq_len, dtype=torch.long, device=inputs_embeds.device).expand((1, -1))
embed_pos = self.embed_positions(position_ids)
hidden_states = inputs_embeds + embed_pos
hidden_states = nn.functional.dropout(hidden_states, p=self.dropout, training=self.training)
# expand attention_mask
if attention_mask is not None:
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
attention_mask = _expand_mask(attention_mask, inputs_embeds.dtype)
encoder_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
# check if head_mask has a correct number of layers specified if desired
if head_mask is not None:
if head_mask.size()[0] != (len(self.layers)):
raise ValueError(
f"The head_mask should be specified for {len(self.layers)} layers, but it is for"
f" {head_mask.size()[0]}."
)
for idx, encoder_layer in enumerate(self.layers):
if output_hidden_states:
encoder_states = encoder_states + (hidden_states,)
if self.gradient_checkpointing and self.training:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs, output_attentions)
return custom_forward
layer_outputs = torch.utils.checkpoint.checkpoint(
create_custom_forward(encoder_layer),
hidden_states,
attention_mask,
(head_mask[idx] if head_mask is not None else None),
)
else:
layer_outputs = encoder_layer(
hidden_states,
attention_mask,
layer_head_mask=(head_mask[idx] if head_mask is not None else None),
output_attentions=output_attentions,
)
hidden_states = layer_outputs[0]
if output_attentions:
all_attentions = all_attentions + (layer_outputs[1],)
hidden_states = self.layer_norm(hidden_states)
if output_hidden_states:
encoder_states = encoder_states + (hidden_states,)
if not return_dict:
return tuple(v for v in [hidden_states, encoder_states, all_attentions] if v is not None)
return BaseModelOutput(
last_hidden_state=hidden_states, hidden_states=encoder_states, attentions=all_attentions
)
class LDMBertModel(LDMBertPreTrainedModel):
_no_split_modules = []
def __init__(self, config: LDMBertConfig):
super().__init__(config)
self.model = LDMBertEncoder(config)
self.to_logits = nn.Linear(config.hidden_size, config.vocab_size)
def forward(
self,
input_ids=None,
attention_mask=None,
position_ids=None,
head_mask=None,
inputs_embeds=None,
output_attentions=None,
output_hidden_states=None,
return_dict=None,
):
outputs = self.model(
input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
return outputs
|
diffusers/src/diffusers/pipelines/latent_diffusion/pipeline_latent_diffusion.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/latent_diffusion/pipeline_latent_diffusion.py",
"repo_id": "diffusers",
"token_count": 14303
}
| 131
|
# coding=utf-8
# Copyright 2024 The HuggingFace Inc. team.
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import shutil
from pathlib import Path
from typing import Optional, Union
import numpy as np
from huggingface_hub import hf_hub_download
from huggingface_hub.utils import validate_hf_hub_args
from ..utils import ONNX_EXTERNAL_WEIGHTS_NAME, ONNX_WEIGHTS_NAME, is_onnx_available, logging
if is_onnx_available():
import onnxruntime as ort
logger = logging.get_logger(__name__)
ORT_TO_NP_TYPE = {
"tensor(bool)": np.bool_,
"tensor(int8)": np.int8,
"tensor(uint8)": np.uint8,
"tensor(int16)": np.int16,
"tensor(uint16)": np.uint16,
"tensor(int32)": np.int32,
"tensor(uint32)": np.uint32,
"tensor(int64)": np.int64,
"tensor(uint64)": np.uint64,
"tensor(float16)": np.float16,
"tensor(float)": np.float32,
"tensor(double)": np.float64,
}
class OnnxRuntimeModel:
def __init__(self, model=None, **kwargs):
logger.info("`diffusers.OnnxRuntimeModel` is experimental and might change in the future.")
self.model = model
self.model_save_dir = kwargs.get("model_save_dir", None)
self.latest_model_name = kwargs.get("latest_model_name", ONNX_WEIGHTS_NAME)
def __call__(self, **kwargs):
inputs = {k: np.array(v) for k, v in kwargs.items()}
return self.model.run(None, inputs)
@staticmethod
def load_model(path: Union[str, Path], provider=None, sess_options=None):
"""
Loads an ONNX Inference session with an ExecutionProvider. Default provider is `CPUExecutionProvider`
Arguments:
path (`str` or `Path`):
Directory from which to load
provider(`str`, *optional*):
Onnxruntime execution provider to use for loading the model, defaults to `CPUExecutionProvider`
"""
if provider is None:
logger.info("No onnxruntime provider specified, using CPUExecutionProvider")
provider = "CPUExecutionProvider"
return ort.InferenceSession(path, providers=[provider], sess_options=sess_options)
def _save_pretrained(self, save_directory: Union[str, Path], file_name: Optional[str] = None, **kwargs):
"""
Save a model and its configuration file to a directory, so that it can be re-loaded using the
[`~optimum.onnxruntime.modeling_ort.ORTModel.from_pretrained`] class method. It will always save the
latest_model_name.
Arguments:
save_directory (`str` or `Path`):
Directory where to save the model file.
file_name(`str`, *optional*):
Overwrites the default model file name from `"model.onnx"` to `file_name`. This allows you to save the
model with a different name.
"""
model_file_name = file_name if file_name is not None else ONNX_WEIGHTS_NAME
src_path = self.model_save_dir.joinpath(self.latest_model_name)
dst_path = Path(save_directory).joinpath(model_file_name)
try:
shutil.copyfile(src_path, dst_path)
except shutil.SameFileError:
pass
# copy external weights (for models >2GB)
src_path = self.model_save_dir.joinpath(ONNX_EXTERNAL_WEIGHTS_NAME)
if src_path.exists():
dst_path = Path(save_directory).joinpath(ONNX_EXTERNAL_WEIGHTS_NAME)
try:
shutil.copyfile(src_path, dst_path)
except shutil.SameFileError:
pass
def save_pretrained(
self,
save_directory: Union[str, os.PathLike],
**kwargs,
):
"""
Save a model to a directory, so that it can be re-loaded using the [`~OnnxModel.from_pretrained`] class
method.:
Arguments:
save_directory (`str` or `os.PathLike`):
Directory to which to save. Will be created if it doesn't exist.
"""
if os.path.isfile(save_directory):
logger.error(f"Provided path ({save_directory}) should be a directory, not a file")
return
os.makedirs(save_directory, exist_ok=True)
# saving model weights/files
self._save_pretrained(save_directory, **kwargs)
@classmethod
@validate_hf_hub_args
def _from_pretrained(
cls,
model_id: Union[str, Path],
token: Optional[Union[bool, str, None]] = None,
revision: Optional[Union[str, None]] = None,
force_download: bool = False,
cache_dir: Optional[str] = None,
file_name: Optional[str] = None,
provider: Optional[str] = None,
sess_options: Optional["ort.SessionOptions"] = None,
**kwargs,
):
"""
Load a model from a directory or the HF Hub.
Arguments:
model_id (`str` or `Path`):
Directory from which to load
token (`str` or `bool`):
Is needed to load models from a private or gated repository
revision (`str`):
Revision is the specific model version to use. It can be a branch name, a tag name, or a commit id
cache_dir (`Union[str, Path]`, *optional*):
Path to a directory in which a downloaded pretrained model configuration should be cached if the
standard cache should not be used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force the (re-)download of the model weights and configuration files, overriding the
cached versions if they exist.
file_name(`str`):
Overwrites the default model file name from `"model.onnx"` to `file_name`. This allows you to load
different model files from the same repository or directory.
provider(`str`):
The ONNX runtime provider, e.g. `CPUExecutionProvider` or `CUDAExecutionProvider`.
kwargs (`Dict`, *optional*):
kwargs will be passed to the model during initialization
"""
model_file_name = file_name if file_name is not None else ONNX_WEIGHTS_NAME
# load model from local directory
if os.path.isdir(model_id):
model = OnnxRuntimeModel.load_model(
Path(model_id, model_file_name).as_posix(), provider=provider, sess_options=sess_options
)
kwargs["model_save_dir"] = Path(model_id)
# load model from hub
else:
# download model
model_cache_path = hf_hub_download(
repo_id=model_id,
filename=model_file_name,
token=token,
revision=revision,
cache_dir=cache_dir,
force_download=force_download,
)
kwargs["model_save_dir"] = Path(model_cache_path).parent
kwargs["latest_model_name"] = Path(model_cache_path).name
model = OnnxRuntimeModel.load_model(model_cache_path, provider=provider, sess_options=sess_options)
return cls(model=model, **kwargs)
@classmethod
@validate_hf_hub_args
def from_pretrained(
cls,
model_id: Union[str, Path],
force_download: bool = True,
token: Optional[str] = None,
cache_dir: Optional[str] = None,
**model_kwargs,
):
revision = None
if len(str(model_id).split("@")) == 2:
model_id, revision = model_id.split("@")
return cls._from_pretrained(
model_id=model_id,
revision=revision,
cache_dir=cache_dir,
force_download=force_download,
token=token,
**model_kwargs,
)
|
diffusers/src/diffusers/pipelines/onnx_utils.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/onnx_utils.py",
"repo_id": "diffusers",
"token_count": 3622
}
| 132
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import torch
from torch import nn
from transformers import CLIPPreTrainedModel, CLIPVisionModel
from ...models.attention import BasicTransformerBlock
from ...utils import logging
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
class PaintByExampleImageEncoder(CLIPPreTrainedModel):
def __init__(self, config, proj_size=None):
super().__init__(config)
self.proj_size = proj_size or getattr(config, "projection_dim", 768)
self.model = CLIPVisionModel(config)
self.mapper = PaintByExampleMapper(config)
self.final_layer_norm = nn.LayerNorm(config.hidden_size)
self.proj_out = nn.Linear(config.hidden_size, self.proj_size)
# uncondition for scaling
self.uncond_vector = nn.Parameter(torch.randn((1, 1, self.proj_size)))
def forward(self, pixel_values, return_uncond_vector=False):
clip_output = self.model(pixel_values=pixel_values)
latent_states = clip_output.pooler_output
latent_states = self.mapper(latent_states[:, None])
latent_states = self.final_layer_norm(latent_states)
latent_states = self.proj_out(latent_states)
if return_uncond_vector:
return latent_states, self.uncond_vector
return latent_states
class PaintByExampleMapper(nn.Module):
def __init__(self, config):
super().__init__()
num_layers = (config.num_hidden_layers + 1) // 5
hid_size = config.hidden_size
num_heads = 1
self.blocks = nn.ModuleList(
[
BasicTransformerBlock(hid_size, num_heads, hid_size, activation_fn="gelu", attention_bias=True)
for _ in range(num_layers)
]
)
def forward(self, hidden_states):
for block in self.blocks:
hidden_states = block(hidden_states)
return hidden_states
|
diffusers/src/diffusers/pipelines/paint_by_example/image_encoder.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/paint_by_example/image_encoder.py",
"repo_id": "diffusers",
"token_count": 942
}
| 133
|
# Copyright 2024 Open AI and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from dataclasses import dataclass
from typing import List, Optional, Union
import numpy as np
import PIL.Image
import torch
from transformers import CLIPImageProcessor, CLIPVisionModel
from ...models import PriorTransformer
from ...schedulers import HeunDiscreteScheduler
from ...utils import (
BaseOutput,
logging,
replace_example_docstring,
)
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline
from .renderer import ShapERenderer
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> from PIL import Image
>>> import torch
>>> from diffusers import DiffusionPipeline
>>> from diffusers.utils import export_to_gif, load_image
>>> device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
>>> repo = "openai/shap-e-img2img"
>>> pipe = DiffusionPipeline.from_pretrained(repo, torch_dtype=torch.float16)
>>> pipe = pipe.to(device)
>>> guidance_scale = 3.0
>>> image_url = "https://hf.co/datasets/diffusers/docs-images/resolve/main/shap-e/corgi.png"
>>> image = load_image(image_url).convert("RGB")
>>> images = pipe(
... image,
... guidance_scale=guidance_scale,
... num_inference_steps=64,
... frame_size=256,
... ).images
>>> gif_path = export_to_gif(images[0], "corgi_3d.gif")
```
"""
@dataclass
class ShapEPipelineOutput(BaseOutput):
"""
Output class for [`ShapEPipeline`] and [`ShapEImg2ImgPipeline`].
Args:
images (`torch.Tensor`)
A list of images for 3D rendering.
"""
images: Union[PIL.Image.Image, np.ndarray]
class ShapEImg2ImgPipeline(DiffusionPipeline):
"""
Pipeline for generating latent representation of a 3D asset and rendering with the NeRF method from an image.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
Args:
prior ([`PriorTransformer`]):
The canonical unCLIP prior to approximate the image embedding from the text embedding.
image_encoder ([`~transformers.CLIPVisionModel`]):
Frozen image-encoder.
image_processor ([`~transformers.CLIPImageProcessor`]):
A `CLIPImageProcessor` to process images.
scheduler ([`HeunDiscreteScheduler`]):
A scheduler to be used in combination with the `prior` model to generate image embedding.
shap_e_renderer ([`ShapERenderer`]):
Shap-E renderer projects the generated latents into parameters of a MLP to create 3D objects with the NeRF
rendering method.
"""
model_cpu_offload_seq = "image_encoder->prior"
_exclude_from_cpu_offload = ["shap_e_renderer"]
def __init__(
self,
prior: PriorTransformer,
image_encoder: CLIPVisionModel,
image_processor: CLIPImageProcessor,
scheduler: HeunDiscreteScheduler,
shap_e_renderer: ShapERenderer,
):
super().__init__()
self.register_modules(
prior=prior,
image_encoder=image_encoder,
image_processor=image_processor,
scheduler=scheduler,
shap_e_renderer=shap_e_renderer,
)
# Copied from diffusers.pipelines.unclip.pipeline_unclip.UnCLIPPipeline.prepare_latents
def prepare_latents(self, shape, dtype, device, generator, latents, scheduler):
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
if latents.shape != shape:
raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {shape}")
latents = latents.to(device)
latents = latents * scheduler.init_noise_sigma
return latents
def _encode_image(
self,
image,
device,
num_images_per_prompt,
do_classifier_free_guidance,
):
if isinstance(image, List) and isinstance(image[0], torch.Tensor):
image = torch.cat(image, axis=0) if image[0].ndim == 4 else torch.stack(image, axis=0)
if not isinstance(image, torch.Tensor):
image = self.image_processor(image, return_tensors="pt").pixel_values[0].unsqueeze(0)
image = image.to(dtype=self.image_encoder.dtype, device=device)
image_embeds = self.image_encoder(image)["last_hidden_state"]
image_embeds = image_embeds[:, 1:, :].contiguous() # batch_size, dim, 256
image_embeds = image_embeds.repeat_interleave(num_images_per_prompt, dim=0)
if do_classifier_free_guidance:
negative_image_embeds = torch.zeros_like(image_embeds)
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
image_embeds = torch.cat([negative_image_embeds, image_embeds])
return image_embeds
@torch.no_grad()
@replace_example_docstring(EXAMPLE_DOC_STRING)
def __call__(
self,
image: Union[PIL.Image.Image, List[PIL.Image.Image]],
num_images_per_prompt: int = 1,
num_inference_steps: int = 25,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
guidance_scale: float = 4.0,
frame_size: int = 64,
output_type: Optional[str] = "pil", # pil, np, latent, mesh
return_dict: bool = True,
):
"""
The call function to the pipeline for generation.
Args:
image (`torch.Tensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.Tensor]`, `List[PIL.Image.Image]`, or `List[np.ndarray]`):
`Image` or tensor representing an image batch to be used as the starting point. Can also accept image
latents as image, but if passing latents directly it is not encoded again.
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
num_inference_steps (`int`, *optional*, defaults to 25):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
guidance_scale (`float`, *optional*, defaults to 4.0):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
frame_size (`int`, *optional*, default to 64):
The width and height of each image frame of the generated 3D output.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `"pil"` (`PIL.Image.Image`), `"np"`
(`np.array`), `"latent"` (`torch.Tensor`), or mesh ([`MeshDecoderOutput`]).
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.shap_e.pipeline_shap_e.ShapEPipelineOutput`] instead of a plain
tuple.
Examples:
Returns:
[`~pipelines.shap_e.pipeline_shap_e.ShapEPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.shap_e.pipeline_shap_e.ShapEPipelineOutput`] is returned,
otherwise a `tuple` is returned where the first element is a list with the generated images.
"""
if isinstance(image, PIL.Image.Image):
batch_size = 1
elif isinstance(image, torch.Tensor):
batch_size = image.shape[0]
elif isinstance(image, list) and isinstance(image[0], (torch.Tensor, PIL.Image.Image)):
batch_size = len(image)
else:
raise ValueError(
f"`image` has to be of type `PIL.Image.Image`, `torch.Tensor`, `List[PIL.Image.Image]` or `List[torch.Tensor]` but is {type(image)}"
)
device = self._execution_device
batch_size = batch_size * num_images_per_prompt
do_classifier_free_guidance = guidance_scale > 1.0
image_embeds = self._encode_image(image, device, num_images_per_prompt, do_classifier_free_guidance)
# prior
self.scheduler.set_timesteps(num_inference_steps, device=device)
timesteps = self.scheduler.timesteps
num_embeddings = self.prior.config.num_embeddings
embedding_dim = self.prior.config.embedding_dim
if latents is None:
latents = self.prepare_latents(
(batch_size, num_embeddings * embedding_dim),
image_embeds.dtype,
device,
generator,
latents,
self.scheduler,
)
# YiYi notes: for testing only to match ldm, we can directly create a latents with desired shape: batch_size, num_embeddings, embedding_dim
latents = latents.reshape(latents.shape[0], num_embeddings, embedding_dim)
for i, t in enumerate(self.progress_bar(timesteps)):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
scaled_model_input = self.scheduler.scale_model_input(latent_model_input, t)
noise_pred = self.prior(
scaled_model_input,
timestep=t,
proj_embedding=image_embeds,
).predicted_image_embedding
# remove the variance
noise_pred, _ = noise_pred.split(
scaled_model_input.shape[2], dim=2
) # batch_size, num_embeddings, embedding_dim
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred - noise_pred_uncond)
latents = self.scheduler.step(
noise_pred,
timestep=t,
sample=latents,
).prev_sample
if output_type not in ["np", "pil", "latent", "mesh"]:
raise ValueError(
f"Only the output types `pil`, `np`, `latent` and `mesh` are supported not output_type={output_type}"
)
# Offload all models
self.maybe_free_model_hooks()
if output_type == "latent":
return ShapEPipelineOutput(images=latents)
images = []
if output_type == "mesh":
for i, latent in enumerate(latents):
mesh = self.shap_e_renderer.decode_to_mesh(
latent[None, :],
device,
)
images.append(mesh)
else:
# np, pil
for i, latent in enumerate(latents):
image = self.shap_e_renderer.decode_to_image(
latent[None, :],
device,
size=frame_size,
)
images.append(image)
images = torch.stack(images)
images = images.cpu().numpy()
if output_type == "pil":
images = [self.numpy_to_pil(image) for image in images]
if not return_dict:
return (images,)
return ShapEPipelineOutput(images=images)
|
diffusers/src/diffusers/pipelines/shap_e/pipeline_shap_e_img2img.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/shap_e/pipeline_shap_e_img2img.py",
"repo_id": "diffusers",
"token_count": 5704
}
| 134
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Optional, Tuple
import jax
import jax.numpy as jnp
from flax import linen as nn
from flax.core.frozen_dict import FrozenDict
from transformers import CLIPConfig, FlaxPreTrainedModel
from transformers.models.clip.modeling_flax_clip import FlaxCLIPVisionModule
def jax_cosine_distance(emb_1, emb_2, eps=1e-12):
norm_emb_1 = jnp.divide(emb_1.T, jnp.clip(jnp.linalg.norm(emb_1, axis=1), a_min=eps)).T
norm_emb_2 = jnp.divide(emb_2.T, jnp.clip(jnp.linalg.norm(emb_2, axis=1), a_min=eps)).T
return jnp.matmul(norm_emb_1, norm_emb_2.T)
class FlaxStableDiffusionSafetyCheckerModule(nn.Module):
config: CLIPConfig
dtype: jnp.dtype = jnp.float32
def setup(self):
self.vision_model = FlaxCLIPVisionModule(self.config.vision_config)
self.visual_projection = nn.Dense(self.config.projection_dim, use_bias=False, dtype=self.dtype)
self.concept_embeds = self.param("concept_embeds", jax.nn.initializers.ones, (17, self.config.projection_dim))
self.special_care_embeds = self.param(
"special_care_embeds", jax.nn.initializers.ones, (3, self.config.projection_dim)
)
self.concept_embeds_weights = self.param("concept_embeds_weights", jax.nn.initializers.ones, (17,))
self.special_care_embeds_weights = self.param("special_care_embeds_weights", jax.nn.initializers.ones, (3,))
def __call__(self, clip_input):
pooled_output = self.vision_model(clip_input)[1]
image_embeds = self.visual_projection(pooled_output)
special_cos_dist = jax_cosine_distance(image_embeds, self.special_care_embeds)
cos_dist = jax_cosine_distance(image_embeds, self.concept_embeds)
# increase this value to create a stronger `nfsw` filter
# at the cost of increasing the possibility of filtering benign image inputs
adjustment = 0.0
special_scores = special_cos_dist - self.special_care_embeds_weights[None, :] + adjustment
special_scores = jnp.round(special_scores, 3)
is_special_care = jnp.any(special_scores > 0, axis=1, keepdims=True)
# Use a lower threshold if an image has any special care concept
special_adjustment = is_special_care * 0.01
concept_scores = cos_dist - self.concept_embeds_weights[None, :] + special_adjustment
concept_scores = jnp.round(concept_scores, 3)
has_nsfw_concepts = jnp.any(concept_scores > 0, axis=1)
return has_nsfw_concepts
class FlaxStableDiffusionSafetyChecker(FlaxPreTrainedModel):
config_class = CLIPConfig
main_input_name = "clip_input"
module_class = FlaxStableDiffusionSafetyCheckerModule
def __init__(
self,
config: CLIPConfig,
input_shape: Optional[Tuple] = None,
seed: int = 0,
dtype: jnp.dtype = jnp.float32,
_do_init: bool = True,
**kwargs,
):
if input_shape is None:
input_shape = (1, 224, 224, 3)
module = self.module_class(config=config, dtype=dtype, **kwargs)
super().__init__(config, module, input_shape=input_shape, seed=seed, dtype=dtype, _do_init=_do_init)
def init_weights(self, rng: jax.Array, input_shape: Tuple, params: FrozenDict = None) -> FrozenDict:
# init input tensor
clip_input = jax.random.normal(rng, input_shape)
params_rng, dropout_rng = jax.random.split(rng)
rngs = {"params": params_rng, "dropout": dropout_rng}
random_params = self.module.init(rngs, clip_input)["params"]
return random_params
def __call__(
self,
clip_input,
params: dict = None,
):
clip_input = jnp.transpose(clip_input, (0, 2, 3, 1))
return self.module.apply(
{"params": params or self.params},
jnp.array(clip_input, dtype=jnp.float32),
rngs={},
)
|
diffusers/src/diffusers/pipelines/stable_diffusion/safety_checker_flax.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/stable_diffusion/safety_checker_flax.py",
"repo_id": "diffusers",
"token_count": 1822
}
| 135
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import importlib
import inspect
from typing import List, Optional, Tuple, Union
import torch
from k_diffusion.external import CompVisDenoiser, CompVisVDenoiser
from k_diffusion.sampling import BrownianTreeNoiseSampler, get_sigmas_karras
from transformers import (
CLIPTextModel,
CLIPTextModelWithProjection,
CLIPTokenizer,
)
from ...image_processor import VaeImageProcessor
from ...loaders import (
FromSingleFileMixin,
IPAdapterMixin,
StableDiffusionXLLoraLoaderMixin,
TextualInversionLoaderMixin,
)
from ...models import AutoencoderKL, UNet2DConditionModel
from ...models.attention_processor import (
AttnProcessor2_0,
FusedAttnProcessor2_0,
XFormersAttnProcessor,
)
from ...models.lora import adjust_lora_scale_text_encoder
from ...schedulers import KarrasDiffusionSchedulers, LMSDiscreteScheduler
from ...utils import (
USE_PEFT_BACKEND,
logging,
replace_example_docstring,
scale_lora_layers,
unscale_lora_layers,
)
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, StableDiffusionMixin
from ..stable_diffusion_xl.pipeline_output import StableDiffusionXLPipelineOutput
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import torch
>>> from diffusers import StableDiffusionXLKDiffusionPipeline
>>> pipe = StableDiffusionXLKDiffusionPipeline.from_pretrained(
... "stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16
... )
>>> pipe = pipe.to("cuda")
>>> pipe.set_scheduler("sample_dpmpp_2m_sde")
>>> prompt = "a photo of an astronaut riding a horse on mars"
>>> image = pipe(prompt).images[0]
```
"""
# Copied from diffusers.pipelines.stable_diffusion_k_diffusion.pipeline_stable_diffusion_k_diffusion.ModelWrapper
class ModelWrapper:
def __init__(self, model, alphas_cumprod):
self.model = model
self.alphas_cumprod = alphas_cumprod
def apply_model(self, *args, **kwargs):
if len(args) == 3:
encoder_hidden_states = args[-1]
args = args[:2]
if kwargs.get("cond", None) is not None:
encoder_hidden_states = kwargs.pop("cond")
return self.model(*args, encoder_hidden_states=encoder_hidden_states, **kwargs).sample
class StableDiffusionXLKDiffusionPipeline(
DiffusionPipeline,
StableDiffusionMixin,
FromSingleFileMixin,
StableDiffusionXLLoraLoaderMixin,
TextualInversionLoaderMixin,
IPAdapterMixin,
):
r"""
Pipeline for text-to-image generation using Stable Diffusion XL and k-diffusion.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods the
library implements for all the pipelines (such as downloading or saving, running on a particular device, etc.)
The pipeline also inherits the following loading methods:
- [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] for loading textual inversion embeddings
- [`~loaders.FromSingleFileMixin.from_single_file`] for loading `.ckpt` files
- [`~loaders.StableDiffusionXLLoraLoaderMixin.load_lora_weights`] for loading LoRA weights
- [`~loaders.StableDiffusionXLLoraLoaderMixin.save_lora_weights`] for saving LoRA weights
- [`~loaders.IPAdapterMixin.load_ip_adapter`] for loading IP Adapters
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) Model to encode and decode images to and from latent representations.
text_encoder ([`CLIPTextModel`]):
Frozen text-encoder. Stable Diffusion XL uses the text portion of
[CLIP](https://huggingface.co/docs/transformers/model_doc/clip#transformers.CLIPTextModel), specifically
the [clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14) variant.
text_encoder_2 ([` CLIPTextModelWithProjection`]):
Second frozen text-encoder. Stable Diffusion XL uses the text and pool portion of
[CLIP](https://huggingface.co/docs/transformers/model_doc/clip#transformers.CLIPTextModelWithProjection),
specifically the
[laion/CLIP-ViT-bigG-14-laion2B-39B-b160k](https://huggingface.co/laion/CLIP-ViT-bigG-14-laion2B-39B-b160k)
variant.
tokenizer (`CLIPTokenizer`):
Tokenizer of class
[CLIPTokenizer](https://huggingface.co/docs/transformers/v4.21.0/en/model_doc/clip#transformers.CLIPTokenizer).
tokenizer_2 (`CLIPTokenizer`):
Second Tokenizer of class
[CLIPTokenizer](https://huggingface.co/docs/transformers/v4.21.0/en/model_doc/clip#transformers.CLIPTokenizer).
unet ([`UNet2DConditionModel`]): Conditional U-Net architecture to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
force_zeros_for_empty_prompt (`bool`, *optional*, defaults to `"True"`):
Whether the negative prompt embeddings shall be forced to always be set to 0. Also see the config of
`stabilityai/stable-diffusion-xl-base-1-0`.
"""
model_cpu_offload_seq = "text_encoder->text_encoder_2->unet->vae"
_optional_components = [
"tokenizer",
"tokenizer_2",
"text_encoder",
"text_encoder_2",
"feature_extractor",
]
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
text_encoder_2: CLIPTextModelWithProjection,
tokenizer: CLIPTokenizer,
tokenizer_2: CLIPTokenizer,
unet: UNet2DConditionModel,
scheduler: KarrasDiffusionSchedulers,
force_zeros_for_empty_prompt: bool = True,
):
super().__init__()
# get correct sigmas from LMS
scheduler = LMSDiscreteScheduler.from_config(scheduler.config)
self.register_modules(
vae=vae,
text_encoder=text_encoder,
text_encoder_2=text_encoder_2,
tokenizer=tokenizer,
tokenizer_2=tokenizer_2,
unet=unet,
scheduler=scheduler,
)
self.register_to_config(force_zeros_for_empty_prompt=force_zeros_for_empty_prompt)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor)
self.default_sample_size = self.unet.config.sample_size
model = ModelWrapper(unet, scheduler.alphas_cumprod)
if scheduler.config.prediction_type == "v_prediction":
self.k_diffusion_model = CompVisVDenoiser(model)
else:
self.k_diffusion_model = CompVisDenoiser(model)
# Copied from diffusers.pipelines.stable_diffusion_k_diffusion.pipeline_stable_diffusion_k_diffusion.StableDiffusionKDiffusionPipeline.set_scheduler
def set_scheduler(self, scheduler_type: str):
library = importlib.import_module("k_diffusion")
sampling = getattr(library, "sampling")
try:
self.sampler = getattr(sampling, scheduler_type)
except Exception:
valid_samplers = []
for s in dir(sampling):
if "sample_" in s:
valid_samplers.append(s)
raise ValueError(f"Invalid scheduler type {scheduler_type}. Please choose one of {valid_samplers}.")
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline.encode_prompt
def encode_prompt(
self,
prompt: str,
prompt_2: Optional[str] = None,
device: Optional[torch.device] = None,
num_images_per_prompt: int = 1,
do_classifier_free_guidance: bool = True,
negative_prompt: Optional[str] = None,
negative_prompt_2: Optional[str] = None,
prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
pooled_prompt_embeds: Optional[torch.Tensor] = None,
negative_pooled_prompt_embeds: Optional[torch.Tensor] = None,
lora_scale: Optional[float] = None,
clip_skip: Optional[int] = None,
):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `List[str]`, *optional*):
prompt to be encoded
prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is
used in both text-encoders
device: (`torch.device`):
torch device
num_images_per_prompt (`int`):
number of images that should be generated per prompt
do_classifier_free_guidance (`bool`):
whether to use classifier free guidance or not
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
negative_prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and
`text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders
prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
pooled_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting.
If not provided, pooled text embeddings will be generated from `prompt` input argument.
negative_pooled_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt`
input argument.
lora_scale (`float`, *optional*):
A lora scale that will be applied to all LoRA layers of the text encoder if LoRA layers are loaded.
clip_skip (`int`, *optional*):
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.
"""
device = device or self._execution_device
# set lora scale so that monkey patched LoRA
# function of text encoder can correctly access it
if lora_scale is not None and isinstance(self, StableDiffusionXLLoraLoaderMixin):
self._lora_scale = lora_scale
# dynamically adjust the LoRA scale
if self.text_encoder is not None:
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder, lora_scale)
else:
scale_lora_layers(self.text_encoder, lora_scale)
if self.text_encoder_2 is not None:
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder_2, lora_scale)
else:
scale_lora_layers(self.text_encoder_2, lora_scale)
prompt = [prompt] if isinstance(prompt, str) else prompt
if prompt is not None:
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
# Define tokenizers and text encoders
tokenizers = [self.tokenizer, self.tokenizer_2] if self.tokenizer is not None else [self.tokenizer_2]
text_encoders = (
[self.text_encoder, self.text_encoder_2] if self.text_encoder is not None else [self.text_encoder_2]
)
if prompt_embeds is None:
prompt_2 = prompt_2 or prompt
prompt_2 = [prompt_2] if isinstance(prompt_2, str) else prompt_2
# textual inversion: process multi-vector tokens if necessary
prompt_embeds_list = []
prompts = [prompt, prompt_2]
for prompt, tokenizer, text_encoder in zip(prompts, tokenizers, text_encoders):
if isinstance(self, TextualInversionLoaderMixin):
prompt = self.maybe_convert_prompt(prompt, tokenizer)
text_inputs = tokenizer(
prompt,
padding="max_length",
max_length=tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
untruncated_ids = tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = tokenizer.batch_decode(untruncated_ids[:, tokenizer.model_max_length - 1 : -1])
logger.warning(
"The following part of your input was truncated because CLIP can only handle sequences up to"
f" {tokenizer.model_max_length} tokens: {removed_text}"
)
prompt_embeds = text_encoder(text_input_ids.to(device), output_hidden_states=True)
# We are only ALWAYS interested in the pooled output of the final text encoder
pooled_prompt_embeds = prompt_embeds[0]
if clip_skip is None:
prompt_embeds = prompt_embeds.hidden_states[-2]
else:
# "2" because SDXL always indexes from the penultimate layer.
prompt_embeds = prompt_embeds.hidden_states[-(clip_skip + 2)]
prompt_embeds_list.append(prompt_embeds)
prompt_embeds = torch.concat(prompt_embeds_list, dim=-1)
# get unconditional embeddings for classifier free guidance
zero_out_negative_prompt = negative_prompt is None and self.config.force_zeros_for_empty_prompt
if do_classifier_free_guidance and negative_prompt_embeds is None and zero_out_negative_prompt:
negative_prompt_embeds = torch.zeros_like(prompt_embeds)
negative_pooled_prompt_embeds = torch.zeros_like(pooled_prompt_embeds)
elif do_classifier_free_guidance and negative_prompt_embeds is None:
negative_prompt = negative_prompt or ""
negative_prompt_2 = negative_prompt_2 or negative_prompt
# normalize str to list
negative_prompt = batch_size * [negative_prompt] if isinstance(negative_prompt, str) else negative_prompt
negative_prompt_2 = (
batch_size * [negative_prompt_2] if isinstance(negative_prompt_2, str) else negative_prompt_2
)
uncond_tokens: List[str]
if prompt is not None and type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
f" {type(prompt)}."
)
elif batch_size != len(negative_prompt):
raise ValueError(
f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:"
f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches"
" the batch size of `prompt`."
)
else:
uncond_tokens = [negative_prompt, negative_prompt_2]
negative_prompt_embeds_list = []
for negative_prompt, tokenizer, text_encoder in zip(uncond_tokens, tokenizers, text_encoders):
if isinstance(self, TextualInversionLoaderMixin):
negative_prompt = self.maybe_convert_prompt(negative_prompt, tokenizer)
max_length = prompt_embeds.shape[1]
uncond_input = tokenizer(
negative_prompt,
padding="max_length",
max_length=max_length,
truncation=True,
return_tensors="pt",
)
negative_prompt_embeds = text_encoder(
uncond_input.input_ids.to(device),
output_hidden_states=True,
)
# We are only ALWAYS interested in the pooled output of the final text encoder
negative_pooled_prompt_embeds = negative_prompt_embeds[0]
negative_prompt_embeds = negative_prompt_embeds.hidden_states[-2]
negative_prompt_embeds_list.append(negative_prompt_embeds)
negative_prompt_embeds = torch.concat(negative_prompt_embeds_list, dim=-1)
if self.text_encoder_2 is not None:
prompt_embeds = prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
else:
prompt_embeds = prompt_embeds.to(dtype=self.unet.dtype, device=device)
bs_embed, seq_len, _ = prompt_embeds.shape
# duplicate text embeddings for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1)
prompt_embeds = prompt_embeds.view(bs_embed * num_images_per_prompt, seq_len, -1)
if do_classifier_free_guidance:
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = negative_prompt_embeds.shape[1]
if self.text_encoder_2 is not None:
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
else:
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.unet.dtype, device=device)
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt, 1)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len, -1)
pooled_prompt_embeds = pooled_prompt_embeds.repeat(1, num_images_per_prompt).view(
bs_embed * num_images_per_prompt, -1
)
if do_classifier_free_guidance:
negative_pooled_prompt_embeds = negative_pooled_prompt_embeds.repeat(1, num_images_per_prompt).view(
bs_embed * num_images_per_prompt, -1
)
if self.text_encoder is not None:
if isinstance(self, StableDiffusionXLLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder, lora_scale)
if self.text_encoder_2 is not None:
if isinstance(self, StableDiffusionXLLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder_2, lora_scale)
return prompt_embeds, negative_prompt_embeds, pooled_prompt_embeds, negative_pooled_prompt_embeds
def check_inputs(
self,
prompt,
prompt_2,
height,
width,
negative_prompt=None,
negative_prompt_2=None,
prompt_embeds=None,
negative_prompt_embeds=None,
pooled_prompt_embeds=None,
negative_pooled_prompt_embeds=None,
):
if height % 8 != 0 or width % 8 != 0:
raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.")
if prompt is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt_2 is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt_2`: {prompt_2} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt is None and prompt_embeds is None:
raise ValueError(
"Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined."
)
elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
elif prompt_2 is not None and (not isinstance(prompt_2, str) and not isinstance(prompt_2, list)):
raise ValueError(f"`prompt_2` has to be of type `str` or `list` but is {type(prompt_2)}")
if negative_prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
elif negative_prompt_2 is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt_2`: {negative_prompt_2} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
if prompt_embeds is not None and negative_prompt_embeds is not None:
if prompt_embeds.shape != negative_prompt_embeds.shape:
raise ValueError(
"`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
f" {negative_prompt_embeds.shape}."
)
if prompt_embeds is not None and pooled_prompt_embeds is None:
raise ValueError(
"If `prompt_embeds` are provided, `pooled_prompt_embeds` also have to be passed. Make sure to generate `pooled_prompt_embeds` from the same text encoder that was used to generate `prompt_embeds`."
)
if negative_prompt_embeds is not None and negative_pooled_prompt_embeds is None:
raise ValueError(
"If `negative_prompt_embeds` are provided, `negative_pooled_prompt_embeds` also have to be passed. Make sure to generate `negative_pooled_prompt_embeds` from the same text encoder that was used to generate `negative_prompt_embeds`."
)
def prepare_latents(self, batch_size, num_channels_latents, height, width, dtype, device, generator, latents=None):
shape = (
batch_size,
num_channels_latents,
int(height) // self.vae_scale_factor,
int(width) // self.vae_scale_factor,
)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
latents = latents.to(device)
return latents
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline._get_add_time_ids
def _get_add_time_ids(
self, original_size, crops_coords_top_left, target_size, dtype, text_encoder_projection_dim=None
):
add_time_ids = list(original_size + crops_coords_top_left + target_size)
passed_add_embed_dim = (
self.unet.config.addition_time_embed_dim * len(add_time_ids) + text_encoder_projection_dim
)
expected_add_embed_dim = self.unet.add_embedding.linear_1.in_features
if expected_add_embed_dim != passed_add_embed_dim:
raise ValueError(
f"Model expects an added time embedding vector of length {expected_add_embed_dim}, but a vector of {passed_add_embed_dim} was created. The model has an incorrect config. Please check `unet.config.time_embedding_type` and `text_encoder_2.config.projection_dim`."
)
add_time_ids = torch.tensor([add_time_ids], dtype=dtype)
return add_time_ids
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline.upcast_vae
def upcast_vae(self):
dtype = self.vae.dtype
self.vae.to(dtype=torch.float32)
use_torch_2_0_or_xformers = isinstance(
self.vae.decoder.mid_block.attentions[0].processor,
(
AttnProcessor2_0,
XFormersAttnProcessor,
FusedAttnProcessor2_0,
),
)
# if xformers or torch_2_0 is used attention block does not need
# to be in float32 which can save lots of memory
if use_torch_2_0_or_xformers:
self.vae.post_quant_conv.to(dtype)
self.vae.decoder.conv_in.to(dtype)
self.vae.decoder.mid_block.to(dtype)
@property
def guidance_scale(self):
return self._guidance_scale
@property
def clip_skip(self):
return self._clip_skip
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
@property
def do_classifier_free_guidance(self):
return self._guidance_scale > 1 and self.unet.config.time_cond_proj_dim is None
@torch.no_grad()
@replace_example_docstring(EXAMPLE_DOC_STRING)
def __call__(
self,
prompt: Union[str, List[str]] = None,
prompt_2: Optional[Union[str, List[str]]] = None,
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 5.0,
negative_prompt: Optional[Union[str, List[str]]] = None,
negative_prompt_2: Optional[Union[str, List[str]]] = None,
num_images_per_prompt: Optional[int] = 1,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.Tensor] = None,
prompt_embeds: Optional[torch.Tensor] = None,
negative_prompt_embeds: Optional[torch.Tensor] = None,
pooled_prompt_embeds: Optional[torch.Tensor] = None,
negative_pooled_prompt_embeds: Optional[torch.Tensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
original_size: Optional[Tuple[int, int]] = None,
crops_coords_top_left: Tuple[int, int] = (0, 0),
target_size: Optional[Tuple[int, int]] = None,
negative_original_size: Optional[Tuple[int, int]] = None,
negative_crops_coords_top_left: Tuple[int, int] = (0, 0),
negative_target_size: Optional[Tuple[int, int]] = None,
use_karras_sigmas: Optional[bool] = False,
noise_sampler_seed: Optional[int] = None,
clip_skip: Optional[int] = None,
):
r"""
Function invoked when calling the pipeline for generation.
Args:
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide the image generation. If not defined, one has to pass `prompt_embeds`.
instead.
prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is
used in both text-encoders
height (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor):
The height in pixels of the generated image. This is set to 1024 by default for the best results.
Anything below 512 pixels won't work well for
[stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0)
and checkpoints that are not specifically fine-tuned on low resolutions.
width (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor):
The width in pixels of the generated image. This is set to 1024 by default for the best results.
Anything below 512 pixels won't work well for
[stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0)
and checkpoints that are not specifically fine-tuned on low resolutions.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 5.0):
Guidance scale as defined in [Classifier-Free Diffusion Guidance](https://arxiv.org/abs/2207.12598).
`guidance_scale` is defined as `w` of equation 2. of [Imagen
Paper](https://arxiv.org/pdf/2205.11487.pdf). Guidance scale is enabled by setting `guidance_scale >
1`. Higher guidance scale encourages to generate images that are closely linked to the text `prompt`,
usually at the expense of lower image quality.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
negative_prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and
`text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
One or a list of [torch generator(s)](https://pytorch.org/docs/stable/generated/torch.Generator.html)
to make generation deterministic.
latents (`torch.Tensor`, *optional*):
Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor will ge generated by sampling using the supplied random `generator`.
prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
pooled_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting.
If not provided, pooled text embeddings will be generated from `prompt` input argument.
negative_pooled_prompt_embeds (`torch.Tensor`, *optional*):
Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt`
input argument.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generate image. Choose between
[PIL](https://pillow.readthedocs.io/en/stable/): `PIL.Image.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] instead
of a plain tuple.
original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
If `original_size` is not the same as `target_size` the image will appear to be down- or upsampled.
`original_size` defaults to `(height, width)` if not specified. Part of SDXL's micro-conditioning as
explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)):
`crops_coords_top_left` can be used to generate an image that appears to be "cropped" from the position
`crops_coords_top_left` downwards. Favorable, well-centered images are usually achieved by setting
`crops_coords_top_left` to (0, 0). Part of SDXL's micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
For most cases, `target_size` should be set to the desired height and width of the generated image. If
not specified it will default to `(height, width)`. Part of SDXL's micro-conditioning as explained in
section 2.2 of [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
negative_original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
To negatively condition the generation process based on a specific image resolution. Part of SDXL's
micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
negative_crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)):
To negatively condition the generation process based on a specific crop coordinates. Part of SDXL's
micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
negative_target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
To negatively condition the generation process based on a target image resolution. It should be as same
as the `target_size` for most cases. Part of SDXL's micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
Examples:
Returns:
[`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] or `tuple`:
[`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] if `return_dict` is True, otherwise a
`tuple`. When returning a tuple, the first element is a list with the generated images.
"""
# 0. Default height and width to unet
height = height or self.default_sample_size * self.vae_scale_factor
width = width or self.default_sample_size * self.vae_scale_factor
original_size = original_size or (height, width)
target_size = target_size or (height, width)
# 1. Check inputs. Raise error if not correct
self.check_inputs(
prompt,
prompt_2,
height,
width,
negative_prompt,
negative_prompt_2,
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
)
if guidance_scale <= 1.0:
raise ValueError("has to use guidance_scale")
self._guidance_scale = guidance_scale
self._clip_skip = clip_skip
# 2. Define call parameters
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
# 3. Encode input prompt
lora_scale = None
(
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
) = self.encode_prompt(
prompt=prompt,
prompt_2=prompt_2,
device=device,
num_images_per_prompt=num_images_per_prompt,
do_classifier_free_guidance=self.do_classifier_free_guidance,
negative_prompt=negative_prompt,
negative_prompt_2=negative_prompt_2,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
pooled_prompt_embeds=pooled_prompt_embeds,
negative_pooled_prompt_embeds=negative_pooled_prompt_embeds,
lora_scale=lora_scale,
clip_skip=self.clip_skip,
)
# 4. Prepare timesteps
self.scheduler.set_timesteps(num_inference_steps, device=prompt_embeds.device)
# 5. Prepare sigmas
if use_karras_sigmas:
sigma_min: float = self.k_diffusion_model.sigmas[0].item()
sigma_max: float = self.k_diffusion_model.sigmas[-1].item()
sigmas = get_sigmas_karras(n=num_inference_steps, sigma_min=sigma_min, sigma_max=sigma_max)
else:
sigmas = self.scheduler.sigmas
sigmas = sigmas.to(dtype=prompt_embeds.dtype, device=device)
# 6. Prepare latent variables
num_channels_latents = self.unet.config.in_channels
latents = self.prepare_latents(
batch_size * num_images_per_prompt,
num_channels_latents,
height,
width,
prompt_embeds.dtype,
device,
generator,
latents,
)
latents = latents * sigmas[0]
self.k_diffusion_model.sigmas = self.k_diffusion_model.sigmas.to(latents.device)
self.k_diffusion_model.log_sigmas = self.k_diffusion_model.log_sigmas.to(latents.device)
# 7. Prepare added time ids & embeddings
add_text_embeds = pooled_prompt_embeds
if self.text_encoder_2 is None:
text_encoder_projection_dim = int(pooled_prompt_embeds.shape[-1])
else:
text_encoder_projection_dim = self.text_encoder_2.config.projection_dim
add_time_ids = self._get_add_time_ids(
original_size,
crops_coords_top_left,
target_size,
dtype=prompt_embeds.dtype,
text_encoder_projection_dim=text_encoder_projection_dim,
)
if negative_original_size is not None and negative_target_size is not None:
negative_add_time_ids = self._get_add_time_ids(
negative_original_size,
negative_crops_coords_top_left,
negative_target_size,
dtype=prompt_embeds.dtype,
text_encoder_projection_dim=text_encoder_projection_dim,
)
else:
negative_add_time_ids = add_time_ids
if self.do_classifier_free_guidance:
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds], dim=0)
add_text_embeds = torch.cat([negative_pooled_prompt_embeds, add_text_embeds], dim=0)
add_time_ids = torch.cat([negative_add_time_ids, add_time_ids], dim=0)
prompt_embeds = prompt_embeds.to(device)
add_text_embeds = add_text_embeds.to(device)
add_time_ids = add_time_ids.to(device).repeat(batch_size * num_images_per_prompt, 1)
added_cond_kwargs = {"text_embeds": add_text_embeds, "time_ids": add_time_ids}
# 8. Optionally get Guidance Scale Embedding
timestep_cond = None
if self.unet.config.time_cond_proj_dim is not None:
guidance_scale_tensor = torch.tensor(self.guidance_scale - 1).repeat(batch_size * num_images_per_prompt)
timestep_cond = self.get_guidance_scale_embedding(
guidance_scale_tensor, embedding_dim=self.unet.config.time_cond_proj_dim
).to(device=device, dtype=latents.dtype)
# 9. Define model function
def model_fn(x, t):
latent_model_input = torch.cat([x] * 2)
t = torch.cat([t] * 2)
noise_pred = self.k_diffusion_model(
latent_model_input,
t,
cond=prompt_embeds,
timestep_cond=timestep_cond,
added_cond_kwargs=added_cond_kwargs,
)
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
return noise_pred
# 10. Run k-diffusion solver
sampler_kwargs = {}
if "noise_sampler" in inspect.signature(self.sampler).parameters:
min_sigma, max_sigma = sigmas[sigmas > 0].min(), sigmas.max()
noise_sampler = BrownianTreeNoiseSampler(latents, min_sigma, max_sigma, noise_sampler_seed)
sampler_kwargs["noise_sampler"] = noise_sampler
if "generator" in inspect.signature(self.sampler).parameters:
sampler_kwargs["generator"] = generator
latents = self.sampler(model_fn, latents, sigmas, **sampler_kwargs)
if not output_type == "latent":
# make sure the VAE is in float32 mode, as it overflows in float16
needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast
if needs_upcasting:
self.upcast_vae()
latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype)
image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0]
# cast back to fp16 if needed
if needs_upcasting:
self.vae.to(dtype=torch.float16)
else:
image = latents
if not output_type == "latent":
image = self.image_processor.postprocess(image, output_type=output_type)
# Offload all models
self.maybe_free_model_hooks()
if not return_dict:
return (image,)
return StableDiffusionXLPipelineOutput(images=image)
|
diffusers/src/diffusers/pipelines/stable_diffusion_k_diffusion/pipeline_stable_diffusion_xl_k_diffusion.py/0
|
{
"file_path": "diffusers/src/diffusers/pipelines/stable_diffusion_k_diffusion/pipeline_stable_diffusion_xl_k_diffusion.py",
"repo_id": "diffusers",
"token_count": 20080
}
| 136
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
from ..utils import (
DIFFUSERS_SLOW_IMPORT,
OptionalDependencyNotAvailable,
_LazyModule,
get_objects_from_module,
is_flax_available,
is_scipy_available,
is_torch_available,
is_torchsde_available,
)
_dummy_modules = {}
_import_structure = {}
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_pt_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_pt_objects))
else:
_import_structure["deprecated"] = ["KarrasVeScheduler", "ScoreSdeVpScheduler"]
_import_structure["scheduling_amused"] = ["AmusedScheduler"]
_import_structure["scheduling_consistency_decoder"] = ["ConsistencyDecoderScheduler"]
_import_structure["scheduling_consistency_models"] = ["CMStochasticIterativeScheduler"]
_import_structure["scheduling_ddim"] = ["DDIMScheduler"]
_import_structure["scheduling_ddim_cogvideox"] = ["CogVideoXDDIMScheduler"]
_import_structure["scheduling_ddim_inverse"] = ["DDIMInverseScheduler"]
_import_structure["scheduling_ddim_parallel"] = ["DDIMParallelScheduler"]
_import_structure["scheduling_ddpm"] = ["DDPMScheduler"]
_import_structure["scheduling_ddpm_parallel"] = ["DDPMParallelScheduler"]
_import_structure["scheduling_ddpm_wuerstchen"] = ["DDPMWuerstchenScheduler"]
_import_structure["scheduling_deis_multistep"] = ["DEISMultistepScheduler"]
_import_structure["scheduling_dpm_cogvideox"] = ["CogVideoXDPMScheduler"]
_import_structure["scheduling_dpmsolver_multistep"] = ["DPMSolverMultistepScheduler"]
_import_structure["scheduling_dpmsolver_multistep_inverse"] = ["DPMSolverMultistepInverseScheduler"]
_import_structure["scheduling_dpmsolver_singlestep"] = ["DPMSolverSinglestepScheduler"]
_import_structure["scheduling_edm_dpmsolver_multistep"] = ["EDMDPMSolverMultistepScheduler"]
_import_structure["scheduling_edm_euler"] = ["EDMEulerScheduler"]
_import_structure["scheduling_euler_ancestral_discrete"] = ["EulerAncestralDiscreteScheduler"]
_import_structure["scheduling_euler_discrete"] = ["EulerDiscreteScheduler"]
_import_structure["scheduling_flow_match_euler_discrete"] = ["FlowMatchEulerDiscreteScheduler"]
_import_structure["scheduling_flow_match_heun_discrete"] = ["FlowMatchHeunDiscreteScheduler"]
_import_structure["scheduling_heun_discrete"] = ["HeunDiscreteScheduler"]
_import_structure["scheduling_ipndm"] = ["IPNDMScheduler"]
_import_structure["scheduling_k_dpm_2_ancestral_discrete"] = ["KDPM2AncestralDiscreteScheduler"]
_import_structure["scheduling_k_dpm_2_discrete"] = ["KDPM2DiscreteScheduler"]
_import_structure["scheduling_lcm"] = ["LCMScheduler"]
_import_structure["scheduling_pndm"] = ["PNDMScheduler"]
_import_structure["scheduling_repaint"] = ["RePaintScheduler"]
_import_structure["scheduling_sasolver"] = ["SASolverScheduler"]
_import_structure["scheduling_sde_ve"] = ["ScoreSdeVeScheduler"]
_import_structure["scheduling_tcd"] = ["TCDScheduler"]
_import_structure["scheduling_unclip"] = ["UnCLIPScheduler"]
_import_structure["scheduling_unipc_multistep"] = ["UniPCMultistepScheduler"]
_import_structure["scheduling_utils"] = ["AysSchedules", "KarrasDiffusionSchedulers", "SchedulerMixin"]
_import_structure["scheduling_vq_diffusion"] = ["VQDiffusionScheduler"]
try:
if not is_flax_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_flax_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_flax_objects))
else:
_import_structure["scheduling_ddim_flax"] = ["FlaxDDIMScheduler"]
_import_structure["scheduling_ddpm_flax"] = ["FlaxDDPMScheduler"]
_import_structure["scheduling_dpmsolver_multistep_flax"] = ["FlaxDPMSolverMultistepScheduler"]
_import_structure["scheduling_euler_discrete_flax"] = ["FlaxEulerDiscreteScheduler"]
_import_structure["scheduling_karras_ve_flax"] = ["FlaxKarrasVeScheduler"]
_import_structure["scheduling_lms_discrete_flax"] = ["FlaxLMSDiscreteScheduler"]
_import_structure["scheduling_pndm_flax"] = ["FlaxPNDMScheduler"]
_import_structure["scheduling_sde_ve_flax"] = ["FlaxScoreSdeVeScheduler"]
_import_structure["scheduling_utils_flax"] = [
"FlaxKarrasDiffusionSchedulers",
"FlaxSchedulerMixin",
"FlaxSchedulerOutput",
"broadcast_to_shape_from_left",
]
try:
if not (is_torch_available() and is_scipy_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_torch_and_scipy_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_torch_and_scipy_objects))
else:
_import_structure["scheduling_lms_discrete"] = ["LMSDiscreteScheduler"]
try:
if not (is_torch_available() and is_torchsde_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_torch_and_torchsde_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_torch_and_torchsde_objects))
else:
_import_structure["scheduling_cosine_dpmsolver_multistep"] = ["CosineDPMSolverMultistepScheduler"]
_import_structure["scheduling_dpmsolver_sde"] = ["DPMSolverSDEScheduler"]
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
from ..utils import (
OptionalDependencyNotAvailable,
is_flax_available,
is_scipy_available,
is_torch_available,
is_torchsde_available,
)
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_pt_objects import * # noqa F403
else:
from .deprecated import KarrasVeScheduler, ScoreSdeVpScheduler
from .scheduling_amused import AmusedScheduler
from .scheduling_consistency_decoder import ConsistencyDecoderScheduler
from .scheduling_consistency_models import CMStochasticIterativeScheduler
from .scheduling_ddim import DDIMScheduler
from .scheduling_ddim_cogvideox import CogVideoXDDIMScheduler
from .scheduling_ddim_inverse import DDIMInverseScheduler
from .scheduling_ddim_parallel import DDIMParallelScheduler
from .scheduling_ddpm import DDPMScheduler
from .scheduling_ddpm_parallel import DDPMParallelScheduler
from .scheduling_ddpm_wuerstchen import DDPMWuerstchenScheduler
from .scheduling_deis_multistep import DEISMultistepScheduler
from .scheduling_dpm_cogvideox import CogVideoXDPMScheduler
from .scheduling_dpmsolver_multistep import DPMSolverMultistepScheduler
from .scheduling_dpmsolver_multistep_inverse import DPMSolverMultistepInverseScheduler
from .scheduling_dpmsolver_singlestep import DPMSolverSinglestepScheduler
from .scheduling_edm_dpmsolver_multistep import EDMDPMSolverMultistepScheduler
from .scheduling_edm_euler import EDMEulerScheduler
from .scheduling_euler_ancestral_discrete import EulerAncestralDiscreteScheduler
from .scheduling_euler_discrete import EulerDiscreteScheduler
from .scheduling_flow_match_euler_discrete import FlowMatchEulerDiscreteScheduler
from .scheduling_flow_match_heun_discrete import FlowMatchHeunDiscreteScheduler
from .scheduling_heun_discrete import HeunDiscreteScheduler
from .scheduling_ipndm import IPNDMScheduler
from .scheduling_k_dpm_2_ancestral_discrete import KDPM2AncestralDiscreteScheduler
from .scheduling_k_dpm_2_discrete import KDPM2DiscreteScheduler
from .scheduling_lcm import LCMScheduler
from .scheduling_pndm import PNDMScheduler
from .scheduling_repaint import RePaintScheduler
from .scheduling_sasolver import SASolverScheduler
from .scheduling_sde_ve import ScoreSdeVeScheduler
from .scheduling_tcd import TCDScheduler
from .scheduling_unclip import UnCLIPScheduler
from .scheduling_unipc_multistep import UniPCMultistepScheduler
from .scheduling_utils import AysSchedules, KarrasDiffusionSchedulers, SchedulerMixin
from .scheduling_vq_diffusion import VQDiffusionScheduler
try:
if not is_flax_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_flax_objects import * # noqa F403
else:
from .scheduling_ddim_flax import FlaxDDIMScheduler
from .scheduling_ddpm_flax import FlaxDDPMScheduler
from .scheduling_dpmsolver_multistep_flax import FlaxDPMSolverMultistepScheduler
from .scheduling_euler_discrete_flax import FlaxEulerDiscreteScheduler
from .scheduling_karras_ve_flax import FlaxKarrasVeScheduler
from .scheduling_lms_discrete_flax import FlaxLMSDiscreteScheduler
from .scheduling_pndm_flax import FlaxPNDMScheduler
from .scheduling_sde_ve_flax import FlaxScoreSdeVeScheduler
from .scheduling_utils_flax import (
FlaxKarrasDiffusionSchedulers,
FlaxSchedulerMixin,
FlaxSchedulerOutput,
broadcast_to_shape_from_left,
)
try:
if not (is_torch_available() and is_scipy_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_torch_and_scipy_objects import * # noqa F403
else:
from .scheduling_lms_discrete import LMSDiscreteScheduler
try:
if not (is_torch_available() and is_torchsde_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_torch_and_torchsde_objects import * # noqa F403
else:
from .scheduling_cosine_dpmsolver_multistep import CosineDPMSolverMultistepScheduler
from .scheduling_dpmsolver_sde import DPMSolverSDEScheduler
else:
import sys
sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
for name, value in _dummy_modules.items():
setattr(sys.modules[__name__], name, value)
|
diffusers/src/diffusers/schedulers/__init__.py/0
|
{
"file_path": "diffusers/src/diffusers/schedulers/__init__.py",
"repo_id": "diffusers",
"token_count": 4369
}
| 137
|
# Copyright (c) 2022 Pablo Pernías MIT License
# Copyright 2024 UC Berkeley Team and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# DISCLAIMER: This file is strongly influenced by https://github.com/ermongroup/ddim
import math
from dataclasses import dataclass
from typing import List, Optional, Tuple, Union
import torch
from ..configuration_utils import ConfigMixin, register_to_config
from ..utils import BaseOutput
from ..utils.torch_utils import randn_tensor
from .scheduling_utils import SchedulerMixin
@dataclass
class DDPMWuerstchenSchedulerOutput(BaseOutput):
"""
Output class for the scheduler's step function output.
Args:
prev_sample (`torch.Tensor` of shape `(batch_size, num_channels, height, width)` for images):
Computed sample (x_{t-1}) of previous timestep. `prev_sample` should be used as next model input in the
denoising loop.
"""
prev_sample: torch.Tensor
def betas_for_alpha_bar(
num_diffusion_timesteps,
max_beta=0.999,
alpha_transform_type="cosine",
):
"""
Create a beta schedule that discretizes the given alpha_t_bar function, which defines the cumulative product of
(1-beta) over time from t = [0,1].
Contains a function alpha_bar that takes an argument t and transforms it to the cumulative product of (1-beta) up
to that part of the diffusion process.
Args:
num_diffusion_timesteps (`int`): the number of betas to produce.
max_beta (`float`): the maximum beta to use; use values lower than 1 to
prevent singularities.
alpha_transform_type (`str`, *optional*, default to `cosine`): the type of noise schedule for alpha_bar.
Choose from `cosine` or `exp`
Returns:
betas (`np.ndarray`): the betas used by the scheduler to step the model outputs
"""
if alpha_transform_type == "cosine":
def alpha_bar_fn(t):
return math.cos((t + 0.008) / 1.008 * math.pi / 2) ** 2
elif alpha_transform_type == "exp":
def alpha_bar_fn(t):
return math.exp(t * -12.0)
else:
raise ValueError(f"Unsupported alpha_transform_type: {alpha_transform_type}")
betas = []
for i in range(num_diffusion_timesteps):
t1 = i / num_diffusion_timesteps
t2 = (i + 1) / num_diffusion_timesteps
betas.append(min(1 - alpha_bar_fn(t2) / alpha_bar_fn(t1), max_beta))
return torch.tensor(betas, dtype=torch.float32)
class DDPMWuerstchenScheduler(SchedulerMixin, ConfigMixin):
"""
Denoising diffusion probabilistic models (DDPMs) explores the connections between denoising score matching and
Langevin dynamics sampling.
[`~ConfigMixin`] takes care of storing all config attributes that are passed in the scheduler's `__init__`
function, such as `num_train_timesteps`. They can be accessed via `scheduler.config.num_train_timesteps`.
[`SchedulerMixin`] provides general loading and saving functionality via the [`SchedulerMixin.save_pretrained`] and
[`~SchedulerMixin.from_pretrained`] functions.
For more details, see the original paper: https://arxiv.org/abs/2006.11239
Args:
scaler (`float`): ....
s (`float`): ....
"""
@register_to_config
def __init__(
self,
scaler: float = 1.0,
s: float = 0.008,
):
self.scaler = scaler
self.s = torch.tensor([s])
self._init_alpha_cumprod = torch.cos(self.s / (1 + self.s) * torch.pi * 0.5) ** 2
# standard deviation of the initial noise distribution
self.init_noise_sigma = 1.0
def _alpha_cumprod(self, t, device):
if self.scaler > 1:
t = 1 - (1 - t) ** self.scaler
elif self.scaler < 1:
t = t**self.scaler
alpha_cumprod = torch.cos(
(t + self.s.to(device)) / (1 + self.s.to(device)) * torch.pi * 0.5
) ** 2 / self._init_alpha_cumprod.to(device)
return alpha_cumprod.clamp(0.0001, 0.9999)
def scale_model_input(self, sample: torch.Tensor, timestep: Optional[int] = None) -> torch.Tensor:
"""
Ensures interchangeability with schedulers that need to scale the denoising model input depending on the
current timestep.
Args:
sample (`torch.Tensor`): input sample
timestep (`int`, optional): current timestep
Returns:
`torch.Tensor`: scaled input sample
"""
return sample
def set_timesteps(
self,
num_inference_steps: int = None,
timesteps: Optional[List[int]] = None,
device: Union[str, torch.device] = None,
):
"""
Sets the discrete timesteps used for the diffusion chain. Supporting function to be run before inference.
Args:
num_inference_steps (`Dict[float, int]`):
the number of diffusion steps used when generating samples with a pre-trained model. If passed, then
`timesteps` must be `None`.
device (`str` or `torch.device`, optional):
the device to which the timesteps are moved to. {2 / 3: 20, 0.0: 10}
"""
if timesteps is None:
timesteps = torch.linspace(1.0, 0.0, num_inference_steps + 1, device=device)
if not isinstance(timesteps, torch.Tensor):
timesteps = torch.Tensor(timesteps).to(device)
self.timesteps = timesteps
def step(
self,
model_output: torch.Tensor,
timestep: int,
sample: torch.Tensor,
generator=None,
return_dict: bool = True,
) -> Union[DDPMWuerstchenSchedulerOutput, Tuple]:
"""
Predict the sample at the previous timestep by reversing the SDE. Core function to propagate the diffusion
process from the learned model outputs (most often the predicted noise).
Args:
model_output (`torch.Tensor`): direct output from learned diffusion model.
timestep (`int`): current discrete timestep in the diffusion chain.
sample (`torch.Tensor`):
current instance of sample being created by diffusion process.
generator: random number generator.
return_dict (`bool`): option for returning tuple rather than DDPMWuerstchenSchedulerOutput class
Returns:
[`DDPMWuerstchenSchedulerOutput`] or `tuple`: [`DDPMWuerstchenSchedulerOutput`] if `return_dict` is True,
otherwise a `tuple`. When returning a tuple, the first element is the sample tensor.
"""
dtype = model_output.dtype
device = model_output.device
t = timestep
prev_t = self.previous_timestep(t)
alpha_cumprod = self._alpha_cumprod(t, device).view(t.size(0), *[1 for _ in sample.shape[1:]])
alpha_cumprod_prev = self._alpha_cumprod(prev_t, device).view(prev_t.size(0), *[1 for _ in sample.shape[1:]])
alpha = alpha_cumprod / alpha_cumprod_prev
mu = (1.0 / alpha).sqrt() * (sample - (1 - alpha) * model_output / (1 - alpha_cumprod).sqrt())
std_noise = randn_tensor(mu.shape, generator=generator, device=model_output.device, dtype=model_output.dtype)
std = ((1 - alpha) * (1.0 - alpha_cumprod_prev) / (1.0 - alpha_cumprod)).sqrt() * std_noise
pred = mu + std * (prev_t != 0).float().view(prev_t.size(0), *[1 for _ in sample.shape[1:]])
if not return_dict:
return (pred.to(dtype),)
return DDPMWuerstchenSchedulerOutput(prev_sample=pred.to(dtype))
def add_noise(
self,
original_samples: torch.Tensor,
noise: torch.Tensor,
timesteps: torch.Tensor,
) -> torch.Tensor:
device = original_samples.device
dtype = original_samples.dtype
alpha_cumprod = self._alpha_cumprod(timesteps, device=device).view(
timesteps.size(0), *[1 for _ in original_samples.shape[1:]]
)
noisy_samples = alpha_cumprod.sqrt() * original_samples + (1 - alpha_cumprod).sqrt() * noise
return noisy_samples.to(dtype=dtype)
def __len__(self):
return self.config.num_train_timesteps
def previous_timestep(self, timestep):
index = (self.timesteps - timestep[0]).abs().argmin().item()
prev_t = self.timesteps[index + 1][None].expand(timestep.shape[0])
return prev_t
|
diffusers/src/diffusers/schedulers/scheduling_ddpm_wuerstchen.py/0
|
{
"file_path": "diffusers/src/diffusers/schedulers/scheduling_ddpm_wuerstchen.py",
"repo_id": "diffusers",
"token_count": 3645
}
| 138
|
# Copyright 2024 Zhejiang University Team and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
from typing import List, Optional, Tuple, Union
import numpy as np
import torch
from ..configuration_utils import ConfigMixin, register_to_config
from .scheduling_utils import SchedulerMixin, SchedulerOutput
class IPNDMScheduler(SchedulerMixin, ConfigMixin):
"""
A fourth-order Improved Pseudo Linear Multistep scheduler.
This model inherits from [`SchedulerMixin`] and [`ConfigMixin`]. Check the superclass documentation for the generic
methods the library implements for all schedulers such as loading and saving.
Args:
num_train_timesteps (`int`, defaults to 1000):
The number of diffusion steps to train the model.
trained_betas (`np.ndarray`, *optional*):
Pass an array of betas directly to the constructor to bypass `beta_start` and `beta_end`.
"""
order = 1
@register_to_config
def __init__(
self, num_train_timesteps: int = 1000, trained_betas: Optional[Union[np.ndarray, List[float]]] = None
):
# set `betas`, `alphas`, `timesteps`
self.set_timesteps(num_train_timesteps)
# standard deviation of the initial noise distribution
self.init_noise_sigma = 1.0
# For now we only support F-PNDM, i.e. the runge-kutta method
# For more information on the algorithm please take a look at the paper: https://arxiv.org/pdf/2202.09778.pdf
# mainly at formula (9), (12), (13) and the Algorithm 2.
self.pndm_order = 4
# running values
self.ets = []
self._step_index = None
self._begin_index = None
@property
def step_index(self):
"""
The index counter for current timestep. It will increase 1 after each scheduler step.
"""
return self._step_index
@property
def begin_index(self):
"""
The index for the first timestep. It should be set from pipeline with `set_begin_index` method.
"""
return self._begin_index
# Copied from diffusers.schedulers.scheduling_dpmsolver_multistep.DPMSolverMultistepScheduler.set_begin_index
def set_begin_index(self, begin_index: int = 0):
"""
Sets the begin index for the scheduler. This function should be run from pipeline before the inference.
Args:
begin_index (`int`):
The begin index for the scheduler.
"""
self._begin_index = begin_index
def set_timesteps(self, num_inference_steps: int, device: Union[str, torch.device] = None):
"""
Sets the discrete timesteps used for the diffusion chain (to be run before inference).
Args:
num_inference_steps (`int`):
The number of diffusion steps used when generating samples with a pre-trained model.
device (`str` or `torch.device`, *optional*):
The device to which the timesteps should be moved to. If `None`, the timesteps are not moved.
"""
self.num_inference_steps = num_inference_steps
steps = torch.linspace(1, 0, num_inference_steps + 1)[:-1]
steps = torch.cat([steps, torch.tensor([0.0])])
if self.config.trained_betas is not None:
self.betas = torch.tensor(self.config.trained_betas, dtype=torch.float32)
else:
self.betas = torch.sin(steps * math.pi / 2) ** 2
self.alphas = (1.0 - self.betas**2) ** 0.5
timesteps = (torch.atan2(self.betas, self.alphas) / math.pi * 2)[:-1]
self.timesteps = timesteps.to(device)
self.ets = []
self._step_index = None
self._begin_index = None
# Copied from diffusers.schedulers.scheduling_euler_discrete.EulerDiscreteScheduler.index_for_timestep
def index_for_timestep(self, timestep, schedule_timesteps=None):
if schedule_timesteps is None:
schedule_timesteps = self.timesteps
indices = (schedule_timesteps == timestep).nonzero()
# The sigma index that is taken for the **very** first `step`
# is always the second index (or the last index if there is only 1)
# This way we can ensure we don't accidentally skip a sigma in
# case we start in the middle of the denoising schedule (e.g. for image-to-image)
pos = 1 if len(indices) > 1 else 0
return indices[pos].item()
# Copied from diffusers.schedulers.scheduling_euler_discrete.EulerDiscreteScheduler._init_step_index
def _init_step_index(self, timestep):
if self.begin_index is None:
if isinstance(timestep, torch.Tensor):
timestep = timestep.to(self.timesteps.device)
self._step_index = self.index_for_timestep(timestep)
else:
self._step_index = self._begin_index
def step(
self,
model_output: torch.Tensor,
timestep: Union[int, torch.Tensor],
sample: torch.Tensor,
return_dict: bool = True,
) -> Union[SchedulerOutput, Tuple]:
"""
Predict the sample from the previous timestep by reversing the SDE. This function propagates the sample with
the linear multistep method. It performs one forward pass multiple times to approximate the solution.
Args:
model_output (`torch.Tensor`):
The direct output from learned diffusion model.
timestep (`int`):
The current discrete timestep in the diffusion chain.
sample (`torch.Tensor`):
A current instance of a sample created by the diffusion process.
return_dict (`bool`):
Whether or not to return a [`~schedulers.scheduling_utils.SchedulerOutput`] or tuple.
Returns:
[`~schedulers.scheduling_utils.SchedulerOutput`] or `tuple`:
If return_dict is `True`, [`~schedulers.scheduling_utils.SchedulerOutput`] is returned, otherwise a
tuple is returned where the first element is the sample tensor.
"""
if self.num_inference_steps is None:
raise ValueError(
"Number of inference steps is 'None', you need to run 'set_timesteps' after creating the scheduler"
)
if self.step_index is None:
self._init_step_index(timestep)
timestep_index = self.step_index
prev_timestep_index = self.step_index + 1
ets = sample * self.betas[timestep_index] + model_output * self.alphas[timestep_index]
self.ets.append(ets)
if len(self.ets) == 1:
ets = self.ets[-1]
elif len(self.ets) == 2:
ets = (3 * self.ets[-1] - self.ets[-2]) / 2
elif len(self.ets) == 3:
ets = (23 * self.ets[-1] - 16 * self.ets[-2] + 5 * self.ets[-3]) / 12
else:
ets = (1 / 24) * (55 * self.ets[-1] - 59 * self.ets[-2] + 37 * self.ets[-3] - 9 * self.ets[-4])
prev_sample = self._get_prev_sample(sample, timestep_index, prev_timestep_index, ets)
# upon completion increase step index by one
self._step_index += 1
if not return_dict:
return (prev_sample,)
return SchedulerOutput(prev_sample=prev_sample)
def scale_model_input(self, sample: torch.Tensor, *args, **kwargs) -> torch.Tensor:
"""
Ensures interchangeability with schedulers that need to scale the denoising model input depending on the
current timestep.
Args:
sample (`torch.Tensor`):
The input sample.
Returns:
`torch.Tensor`:
A scaled input sample.
"""
return sample
def _get_prev_sample(self, sample, timestep_index, prev_timestep_index, ets):
alpha = self.alphas[timestep_index]
sigma = self.betas[timestep_index]
next_alpha = self.alphas[prev_timestep_index]
next_sigma = self.betas[prev_timestep_index]
pred = (sample - sigma * ets) / max(alpha, 1e-8)
prev_sample = next_alpha * pred + ets * next_sigma
return prev_sample
def __len__(self):
return self.config.num_train_timesteps
|
diffusers/src/diffusers/schedulers/scheduling_ipndm.py/0
|
{
"file_path": "diffusers/src/diffusers/schedulers/scheduling_ipndm.py",
"repo_id": "diffusers",
"token_count": 3642
}
| 139
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import importlib
import os
from dataclasses import dataclass
from enum import Enum
from typing import Optional, Union
import torch
from huggingface_hub.utils import validate_hf_hub_args
from ..utils import BaseOutput, PushToHubMixin
SCHEDULER_CONFIG_NAME = "scheduler_config.json"
# NOTE: We make this type an enum because it simplifies usage in docs and prevents
# circular imports when used for `_compatibles` within the schedulers module.
# When it's used as a type in pipelines, it really is a Union because the actual
# scheduler instance is passed in.
class KarrasDiffusionSchedulers(Enum):
DDIMScheduler = 1
DDPMScheduler = 2
PNDMScheduler = 3
LMSDiscreteScheduler = 4
EulerDiscreteScheduler = 5
HeunDiscreteScheduler = 6
EulerAncestralDiscreteScheduler = 7
DPMSolverMultistepScheduler = 8
DPMSolverSinglestepScheduler = 9
KDPM2DiscreteScheduler = 10
KDPM2AncestralDiscreteScheduler = 11
DEISMultistepScheduler = 12
UniPCMultistepScheduler = 13
DPMSolverSDEScheduler = 14
EDMEulerScheduler = 15
AysSchedules = {
"StableDiffusionTimesteps": [999, 850, 736, 645, 545, 455, 343, 233, 124, 24],
"StableDiffusionSigmas": [14.615, 6.475, 3.861, 2.697, 1.886, 1.396, 0.963, 0.652, 0.399, 0.152, 0.0],
"StableDiffusionXLTimesteps": [999, 845, 730, 587, 443, 310, 193, 116, 53, 13],
"StableDiffusionXLSigmas": [14.615, 6.315, 3.771, 2.181, 1.342, 0.862, 0.555, 0.380, 0.234, 0.113, 0.0],
"StableDiffusionVideoSigmas": [700.00, 54.5, 15.886, 7.977, 4.248, 1.789, 0.981, 0.403, 0.173, 0.034, 0.0],
}
@dataclass
class SchedulerOutput(BaseOutput):
"""
Base class for the output of a scheduler's `step` function.
Args:
prev_sample (`torch.Tensor` of shape `(batch_size, num_channels, height, width)` for images):
Computed sample `(x_{t-1})` of previous timestep. `prev_sample` should be used as next model input in the
denoising loop.
"""
prev_sample: torch.Tensor
class SchedulerMixin(PushToHubMixin):
"""
Base class for all schedulers.
[`SchedulerMixin`] contains common functions shared by all schedulers such as general loading and saving
functionalities.
[`ConfigMixin`] takes care of storing the configuration attributes (like `num_train_timesteps`) that are passed to
the scheduler's `__init__` function, and the attributes can be accessed by `scheduler.config.num_train_timesteps`.
Class attributes:
- **_compatibles** (`List[str]`) -- A list of scheduler classes that are compatible with the parent scheduler
class. Use [`~ConfigMixin.from_config`] to load a different compatible scheduler class (should be overridden
by parent class).
"""
config_name = SCHEDULER_CONFIG_NAME
_compatibles = []
has_compatibles = True
@classmethod
@validate_hf_hub_args
def from_pretrained(
cls,
pretrained_model_name_or_path: Optional[Union[str, os.PathLike]] = None,
subfolder: Optional[str] = None,
return_unused_kwargs=False,
**kwargs,
):
r"""
Instantiate a scheduler from a pre-defined JSON configuration file in a local directory or Hub repository.
Parameters:
pretrained_model_name_or_path (`str` or `os.PathLike`, *optional*):
Can be either:
- A string, the *model id* (for example `google/ddpm-celebahq-256`) of a pretrained model hosted on
the Hub.
- A path to a *directory* (for example `./my_model_directory`) containing the scheduler
configuration saved with [`~SchedulerMixin.save_pretrained`].
subfolder (`str`, *optional*):
The subfolder location of a model file within a larger model repository on the Hub or locally.
return_unused_kwargs (`bool`, *optional*, defaults to `False`):
Whether kwargs that are not consumed by the Python class should be returned or not.
cache_dir (`Union[str, os.PathLike]`, *optional*):
Path to a directory where a downloaded pretrained model configuration is cached if the standard cache
is not used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force the (re-)download of the model weights and configuration files, overriding the
cached versions if they exist.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, for example, `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}`. The proxies are used on each request.
output_loading_info(`bool`, *optional*, defaults to `False`):
Whether or not to also return a dictionary containing missing keys, unexpected keys and error messages.
local_files_only(`bool`, *optional*, defaults to `False`):
Whether to only load local model weights and configuration files or not. If set to `True`, the model
won't be downloaded from the Hub.
token (`str` or *bool*, *optional*):
The token to use as HTTP bearer authorization for remote files. If `True`, the token generated from
`diffusers-cli login` (stored in `~/.huggingface`) is used.
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, a commit id, or any identifier
allowed by Git.
<Tip>
To use private or [gated models](https://huggingface.co/docs/hub/models-gated#gated-models), log-in with
`huggingface-cli login`. You can also activate the special
["offline-mode"](https://huggingface.co/diffusers/installation.html#offline-mode) to use this method in a
firewalled environment.
</Tip>
"""
config, kwargs, commit_hash = cls.load_config(
pretrained_model_name_or_path=pretrained_model_name_or_path,
subfolder=subfolder,
return_unused_kwargs=True,
return_commit_hash=True,
**kwargs,
)
return cls.from_config(config, return_unused_kwargs=return_unused_kwargs, **kwargs)
def save_pretrained(self, save_directory: Union[str, os.PathLike], push_to_hub: bool = False, **kwargs):
"""
Save a scheduler configuration object to a directory so that it can be reloaded using the
[`~SchedulerMixin.from_pretrained`] class method.
Args:
save_directory (`str` or `os.PathLike`):
Directory where the configuration JSON file will be saved (will be created if it does not exist).
push_to_hub (`bool`, *optional*, defaults to `False`):
Whether or not to push your model to the Hugging Face Hub after saving it. You can specify the
repository you want to push to with `repo_id` (will default to the name of `save_directory` in your
namespace).
kwargs (`Dict[str, Any]`, *optional*):
Additional keyword arguments passed along to the [`~utils.PushToHubMixin.push_to_hub`] method.
"""
self.save_config(save_directory=save_directory, push_to_hub=push_to_hub, **kwargs)
@property
def compatibles(self):
"""
Returns all schedulers that are compatible with this scheduler
Returns:
`List[SchedulerMixin]`: List of compatible schedulers
"""
return self._get_compatibles()
@classmethod
def _get_compatibles(cls):
compatible_classes_str = list(set([cls.__name__] + cls._compatibles))
diffusers_library = importlib.import_module(__name__.split(".")[0])
compatible_classes = [
getattr(diffusers_library, c) for c in compatible_classes_str if hasattr(diffusers_library, c)
]
return compatible_classes
|
diffusers/src/diffusers/schedulers/scheduling_utils.py/0
|
{
"file_path": "diffusers/src/diffusers/schedulers/scheduling_utils.py",
"repo_id": "diffusers",
"token_count": 3405
}
| 140
|
# This file is autogenerated by the command `make fix-copies`, do not edit.
from ..utils import DummyObject, requires_backends
class CosineDPMSolverMultistepScheduler(metaclass=DummyObject):
_backends = ["torch", "torchsde"]
def __init__(self, *args, **kwargs):
requires_backends(self, ["torch", "torchsde"])
@classmethod
def from_config(cls, *args, **kwargs):
requires_backends(cls, ["torch", "torchsde"])
@classmethod
def from_pretrained(cls, *args, **kwargs):
requires_backends(cls, ["torch", "torchsde"])
class DPMSolverSDEScheduler(metaclass=DummyObject):
_backends = ["torch", "torchsde"]
def __init__(self, *args, **kwargs):
requires_backends(self, ["torch", "torchsde"])
@classmethod
def from_config(cls, *args, **kwargs):
requires_backends(cls, ["torch", "torchsde"])
@classmethod
def from_pretrained(cls, *args, **kwargs):
requires_backends(cls, ["torch", "torchsde"])
|
diffusers/src/diffusers/utils/dummy_torch_and_torchsde_objects.py/0
|
{
"file_path": "diffusers/src/diffusers/utils/dummy_torch_and_torchsde_objects.py",
"repo_id": "diffusers",
"token_count": 416
}
| 141
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
State dict utilities: utility methods for converting state dicts easily
"""
import enum
from .logging import get_logger
logger = get_logger(__name__)
class StateDictType(enum.Enum):
"""
The mode to use when converting state dicts.
"""
DIFFUSERS_OLD = "diffusers_old"
KOHYA_SS = "kohya_ss"
PEFT = "peft"
DIFFUSERS = "diffusers"
# We need to define a proper mapping for Unet since it uses different output keys than text encoder
# e.g. to_q_lora -> q_proj / to_q
UNET_TO_DIFFUSERS = {
".to_out_lora.up": ".to_out.0.lora_B",
".to_out_lora.down": ".to_out.0.lora_A",
".to_q_lora.down": ".to_q.lora_A",
".to_q_lora.up": ".to_q.lora_B",
".to_k_lora.down": ".to_k.lora_A",
".to_k_lora.up": ".to_k.lora_B",
".to_v_lora.down": ".to_v.lora_A",
".to_v_lora.up": ".to_v.lora_B",
".lora.up": ".lora_B",
".lora.down": ".lora_A",
".to_out.lora_magnitude_vector": ".to_out.0.lora_magnitude_vector",
}
DIFFUSERS_TO_PEFT = {
".q_proj.lora_linear_layer.up": ".q_proj.lora_B",
".q_proj.lora_linear_layer.down": ".q_proj.lora_A",
".k_proj.lora_linear_layer.up": ".k_proj.lora_B",
".k_proj.lora_linear_layer.down": ".k_proj.lora_A",
".v_proj.lora_linear_layer.up": ".v_proj.lora_B",
".v_proj.lora_linear_layer.down": ".v_proj.lora_A",
".out_proj.lora_linear_layer.up": ".out_proj.lora_B",
".out_proj.lora_linear_layer.down": ".out_proj.lora_A",
".lora_linear_layer.up": ".lora_B",
".lora_linear_layer.down": ".lora_A",
"text_projection.lora.down.weight": "text_projection.lora_A.weight",
"text_projection.lora.up.weight": "text_projection.lora_B.weight",
}
DIFFUSERS_OLD_TO_PEFT = {
".to_q_lora.up": ".q_proj.lora_B",
".to_q_lora.down": ".q_proj.lora_A",
".to_k_lora.up": ".k_proj.lora_B",
".to_k_lora.down": ".k_proj.lora_A",
".to_v_lora.up": ".v_proj.lora_B",
".to_v_lora.down": ".v_proj.lora_A",
".to_out_lora.up": ".out_proj.lora_B",
".to_out_lora.down": ".out_proj.lora_A",
".lora_linear_layer.up": ".lora_B",
".lora_linear_layer.down": ".lora_A",
}
PEFT_TO_DIFFUSERS = {
".q_proj.lora_B": ".q_proj.lora_linear_layer.up",
".q_proj.lora_A": ".q_proj.lora_linear_layer.down",
".k_proj.lora_B": ".k_proj.lora_linear_layer.up",
".k_proj.lora_A": ".k_proj.lora_linear_layer.down",
".v_proj.lora_B": ".v_proj.lora_linear_layer.up",
".v_proj.lora_A": ".v_proj.lora_linear_layer.down",
".out_proj.lora_B": ".out_proj.lora_linear_layer.up",
".out_proj.lora_A": ".out_proj.lora_linear_layer.down",
"to_k.lora_A": "to_k.lora.down",
"to_k.lora_B": "to_k.lora.up",
"to_q.lora_A": "to_q.lora.down",
"to_q.lora_B": "to_q.lora.up",
"to_v.lora_A": "to_v.lora.down",
"to_v.lora_B": "to_v.lora.up",
"to_out.0.lora_A": "to_out.0.lora.down",
"to_out.0.lora_B": "to_out.0.lora.up",
}
DIFFUSERS_OLD_TO_DIFFUSERS = {
".to_q_lora.up": ".q_proj.lora_linear_layer.up",
".to_q_lora.down": ".q_proj.lora_linear_layer.down",
".to_k_lora.up": ".k_proj.lora_linear_layer.up",
".to_k_lora.down": ".k_proj.lora_linear_layer.down",
".to_v_lora.up": ".v_proj.lora_linear_layer.up",
".to_v_lora.down": ".v_proj.lora_linear_layer.down",
".to_out_lora.up": ".out_proj.lora_linear_layer.up",
".to_out_lora.down": ".out_proj.lora_linear_layer.down",
".to_k.lora_magnitude_vector": ".k_proj.lora_magnitude_vector",
".to_v.lora_magnitude_vector": ".v_proj.lora_magnitude_vector",
".to_q.lora_magnitude_vector": ".q_proj.lora_magnitude_vector",
".to_out.lora_magnitude_vector": ".out_proj.lora_magnitude_vector",
}
PEFT_TO_KOHYA_SS = {
"lora_A": "lora_down",
"lora_B": "lora_up",
# This is not a comprehensive dict as kohya format requires replacing `.` with `_` in keys,
# adding prefixes and adding alpha values
# Check `convert_state_dict_to_kohya` for more
}
PEFT_STATE_DICT_MAPPINGS = {
StateDictType.DIFFUSERS_OLD: DIFFUSERS_OLD_TO_PEFT,
StateDictType.DIFFUSERS: DIFFUSERS_TO_PEFT,
}
DIFFUSERS_STATE_DICT_MAPPINGS = {
StateDictType.DIFFUSERS_OLD: DIFFUSERS_OLD_TO_DIFFUSERS,
StateDictType.PEFT: PEFT_TO_DIFFUSERS,
}
KOHYA_STATE_DICT_MAPPINGS = {StateDictType.PEFT: PEFT_TO_KOHYA_SS}
KEYS_TO_ALWAYS_REPLACE = {
".processor.": ".",
}
def convert_state_dict(state_dict, mapping):
r"""
Simply iterates over the state dict and replaces the patterns in `mapping` with the corresponding values.
Args:
state_dict (`dict[str, torch.Tensor]`):
The state dict to convert.
mapping (`dict[str, str]`):
The mapping to use for conversion, the mapping should be a dictionary with the following structure:
- key: the pattern to replace
- value: the pattern to replace with
Returns:
converted_state_dict (`dict`)
The converted state dict.
"""
converted_state_dict = {}
for k, v in state_dict.items():
# First, filter out the keys that we always want to replace
for pattern in KEYS_TO_ALWAYS_REPLACE.keys():
if pattern in k:
new_pattern = KEYS_TO_ALWAYS_REPLACE[pattern]
k = k.replace(pattern, new_pattern)
for pattern in mapping.keys():
if pattern in k:
new_pattern = mapping[pattern]
k = k.replace(pattern, new_pattern)
break
converted_state_dict[k] = v
return converted_state_dict
def convert_state_dict_to_peft(state_dict, original_type=None, **kwargs):
r"""
Converts a state dict to the PEFT format The state dict can be from previous diffusers format (`OLD_DIFFUSERS`), or
new diffusers format (`DIFFUSERS`). The method only supports the conversion from diffusers old/new to PEFT for now.
Args:
state_dict (`dict[str, torch.Tensor]`):
The state dict to convert.
original_type (`StateDictType`, *optional*):
The original type of the state dict, if not provided, the method will try to infer it automatically.
"""
if original_type is None:
# Old diffusers to PEFT
if any("to_out_lora" in k for k in state_dict.keys()):
original_type = StateDictType.DIFFUSERS_OLD
elif any("lora_linear_layer" in k for k in state_dict.keys()):
original_type = StateDictType.DIFFUSERS
else:
raise ValueError("Could not automatically infer state dict type")
if original_type not in PEFT_STATE_DICT_MAPPINGS.keys():
raise ValueError(f"Original type {original_type} is not supported")
mapping = PEFT_STATE_DICT_MAPPINGS[original_type]
return convert_state_dict(state_dict, mapping)
def convert_state_dict_to_diffusers(state_dict, original_type=None, **kwargs):
r"""
Converts a state dict to new diffusers format. The state dict can be from previous diffusers format
(`OLD_DIFFUSERS`), or PEFT format (`PEFT`) or new diffusers format (`DIFFUSERS`). In the last case the method will
return the state dict as is.
The method only supports the conversion from diffusers old, PEFT to diffusers new for now.
Args:
state_dict (`dict[str, torch.Tensor]`):
The state dict to convert.
original_type (`StateDictType`, *optional*):
The original type of the state dict, if not provided, the method will try to infer it automatically.
kwargs (`dict`, *args*):
Additional arguments to pass to the method.
- **adapter_name**: For example, in case of PEFT, some keys will be pre-pended
with the adapter name, therefore needs a special handling. By default PEFT also takes care of that in
`get_peft_model_state_dict` method:
https://github.com/huggingface/peft/blob/ba0477f2985b1ba311b83459d29895c809404e99/src/peft/utils/save_and_load.py#L92
but we add it here in case we don't want to rely on that method.
"""
peft_adapter_name = kwargs.pop("adapter_name", None)
if peft_adapter_name is not None:
peft_adapter_name = "." + peft_adapter_name
else:
peft_adapter_name = ""
if original_type is None:
# Old diffusers to PEFT
if any("to_out_lora" in k for k in state_dict.keys()):
original_type = StateDictType.DIFFUSERS_OLD
elif any(f".lora_A{peft_adapter_name}.weight" in k for k in state_dict.keys()):
original_type = StateDictType.PEFT
elif any("lora_linear_layer" in k for k in state_dict.keys()):
# nothing to do
return state_dict
else:
raise ValueError("Could not automatically infer state dict type")
if original_type not in DIFFUSERS_STATE_DICT_MAPPINGS.keys():
raise ValueError(f"Original type {original_type} is not supported")
mapping = DIFFUSERS_STATE_DICT_MAPPINGS[original_type]
return convert_state_dict(state_dict, mapping)
def convert_unet_state_dict_to_peft(state_dict):
r"""
Converts a state dict from UNet format to diffusers format - i.e. by removing some keys
"""
mapping = UNET_TO_DIFFUSERS
return convert_state_dict(state_dict, mapping)
def convert_all_state_dict_to_peft(state_dict):
r"""
Attempts to first `convert_state_dict_to_peft`, and if it doesn't detect `lora_linear_layer` for a valid
`DIFFUSERS` LoRA for example, attempts to exclusively convert the Unet `convert_unet_state_dict_to_peft`
"""
try:
peft_dict = convert_state_dict_to_peft(state_dict)
except Exception as e:
if str(e) == "Could not automatically infer state dict type":
peft_dict = convert_unet_state_dict_to_peft(state_dict)
else:
raise
if not any("lora_A" in key or "lora_B" in key for key in peft_dict.keys()):
raise ValueError("Your LoRA was not converted to PEFT")
return peft_dict
def convert_state_dict_to_kohya(state_dict, original_type=None, **kwargs):
r"""
Converts a `PEFT` state dict to `Kohya` format that can be used in AUTOMATIC1111, ComfyUI, SD.Next, InvokeAI, etc.
The method only supports the conversion from PEFT to Kohya for now.
Args:
state_dict (`dict[str, torch.Tensor]`):
The state dict to convert.
original_type (`StateDictType`, *optional*):
The original type of the state dict, if not provided, the method will try to infer it automatically.
kwargs (`dict`, *args*):
Additional arguments to pass to the method.
- **adapter_name**: For example, in case of PEFT, some keys will be pre-pended
with the adapter name, therefore needs a special handling. By default PEFT also takes care of that in
`get_peft_model_state_dict` method:
https://github.com/huggingface/peft/blob/ba0477f2985b1ba311b83459d29895c809404e99/src/peft/utils/save_and_load.py#L92
but we add it here in case we don't want to rely on that method.
"""
try:
import torch
except ImportError:
logger.error("Converting PEFT state dicts to Kohya requires torch to be installed.")
raise
peft_adapter_name = kwargs.pop("adapter_name", None)
if peft_adapter_name is not None:
peft_adapter_name = "." + peft_adapter_name
else:
peft_adapter_name = ""
if original_type is None:
if any(f".lora_A{peft_adapter_name}.weight" in k for k in state_dict.keys()):
original_type = StateDictType.PEFT
if original_type not in KOHYA_STATE_DICT_MAPPINGS.keys():
raise ValueError(f"Original type {original_type} is not supported")
# Use the convert_state_dict function with the appropriate mapping
kohya_ss_partial_state_dict = convert_state_dict(state_dict, KOHYA_STATE_DICT_MAPPINGS[StateDictType.PEFT])
kohya_ss_state_dict = {}
# Additional logic for replacing header, alpha parameters `.` with `_` in all keys
for kohya_key, weight in kohya_ss_partial_state_dict.items():
if "text_encoder_2." in kohya_key:
kohya_key = kohya_key.replace("text_encoder_2.", "lora_te2.")
elif "text_encoder." in kohya_key:
kohya_key = kohya_key.replace("text_encoder.", "lora_te1.")
elif "unet" in kohya_key:
kohya_key = kohya_key.replace("unet", "lora_unet")
elif "lora_magnitude_vector" in kohya_key:
kohya_key = kohya_key.replace("lora_magnitude_vector", "dora_scale")
kohya_key = kohya_key.replace(".", "_", kohya_key.count(".") - 2)
kohya_key = kohya_key.replace(peft_adapter_name, "") # Kohya doesn't take names
kohya_ss_state_dict[kohya_key] = weight
if "lora_down" in kohya_key:
alpha_key = f'{kohya_key.split(".")[0]}.alpha'
kohya_ss_state_dict[alpha_key] = torch.tensor(len(weight))
return kohya_ss_state_dict
|
diffusers/src/diffusers/utils/state_dict_utils.py/0
|
{
"file_path": "diffusers/src/diffusers/utils/state_dict_utils.py",
"repo_id": "diffusers",
"token_count": 5996
}
| 142
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import torch
from diffusers import HunyuanDiT2DModel
from diffusers.utils.testing_utils import (
enable_full_determinism,
torch_device,
)
from ..test_modeling_common import ModelTesterMixin
enable_full_determinism()
class HunyuanDiTTests(ModelTesterMixin, unittest.TestCase):
model_class = HunyuanDiT2DModel
main_input_name = "hidden_states"
@property
def dummy_input(self):
batch_size = 2
num_channels = 4
height = width = 8
embedding_dim = 8
sequence_length = 4
sequence_length_t5 = 4
hidden_states = torch.randn((batch_size, num_channels, height, width)).to(torch_device)
encoder_hidden_states = torch.randn((batch_size, sequence_length, embedding_dim)).to(torch_device)
text_embedding_mask = torch.ones(size=(batch_size, sequence_length)).to(torch_device)
encoder_hidden_states_t5 = torch.randn((batch_size, sequence_length_t5, embedding_dim)).to(torch_device)
text_embedding_mask_t5 = torch.ones(size=(batch_size, sequence_length_t5)).to(torch_device)
timestep = torch.randint(0, 1000, size=(batch_size,), dtype=encoder_hidden_states.dtype).to(torch_device)
original_size = [1024, 1024]
target_size = [16, 16]
crops_coords_top_left = [0, 0]
add_time_ids = list(original_size + target_size + crops_coords_top_left)
add_time_ids = torch.tensor([add_time_ids, add_time_ids], dtype=encoder_hidden_states.dtype).to(torch_device)
style = torch.zeros(size=(batch_size,), dtype=int).to(torch_device)
image_rotary_emb = [
torch.ones(size=(1, 8), dtype=encoder_hidden_states.dtype),
torch.zeros(size=(1, 8), dtype=encoder_hidden_states.dtype),
]
return {
"hidden_states": hidden_states,
"encoder_hidden_states": encoder_hidden_states,
"text_embedding_mask": text_embedding_mask,
"encoder_hidden_states_t5": encoder_hidden_states_t5,
"text_embedding_mask_t5": text_embedding_mask_t5,
"timestep": timestep,
"image_meta_size": add_time_ids,
"style": style,
"image_rotary_emb": image_rotary_emb,
}
@property
def input_shape(self):
return (4, 8, 8)
@property
def output_shape(self):
return (8, 8, 8)
def prepare_init_args_and_inputs_for_common(self):
init_dict = {
"sample_size": 8,
"patch_size": 2,
"in_channels": 4,
"num_layers": 1,
"attention_head_dim": 8,
"num_attention_heads": 2,
"cross_attention_dim": 8,
"cross_attention_dim_t5": 8,
"pooled_projection_dim": 4,
"hidden_size": 16,
"text_len": 4,
"text_len_t5": 4,
"activation_fn": "gelu-approximate",
}
inputs_dict = self.dummy_input
return init_dict, inputs_dict
def test_output(self):
super().test_output(
expected_output_shape=(self.dummy_input[self.main_input_name].shape[0],) + self.output_shape
)
@unittest.skip("HunyuanDIT use a custom processor HunyuanAttnProcessor2_0")
def test_set_xformers_attn_processor_for_determinism(self):
pass
@unittest.skip("HunyuanDIT use a custom processor HunyuanAttnProcessor2_0")
def test_set_attn_processor_for_determinism(self):
pass
|
diffusers/tests/models/transformers/test_models_transformer_hunyuan_dit.py/0
|
{
"file_path": "diffusers/tests/models/transformers/test_models_transformer_hunyuan_dit.py",
"repo_id": "diffusers",
"token_count": 1790
}
| 143
|
# Copyright 2024 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import re
import shutil
import sys
import tempfile
import unittest
git_repo_path = os.path.abspath(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
sys.path.append(os.path.join(git_repo_path, "utils"))
import check_copies # noqa: E402
# This is the reference code that will be used in the tests.
# If DDPMSchedulerOutput is changed in scheduling_ddpm.py, this code needs to be manually updated.
REFERENCE_CODE = """ \"""
Output class for the scheduler's `step` function output.
Args:
prev_sample (`torch.Tensor` of shape `(batch_size, num_channels, height, width)` for images):
Computed sample `(x_{t-1})` of previous timestep. `prev_sample` should be used as next model input in the
denoising loop.
pred_original_sample (`torch.Tensor` of shape `(batch_size, num_channels, height, width)` for images):
The predicted denoised sample `(x_{0})` based on the model output from the current timestep.
`pred_original_sample` can be used to preview progress or for guidance.
\"""
prev_sample: torch.Tensor
pred_original_sample: Optional[torch.Tensor] = None
"""
class CopyCheckTester(unittest.TestCase):
def setUp(self):
self.diffusers_dir = tempfile.mkdtemp()
os.makedirs(os.path.join(self.diffusers_dir, "schedulers/"))
check_copies.DIFFUSERS_PATH = self.diffusers_dir
shutil.copy(
os.path.join(git_repo_path, "src/diffusers/schedulers/scheduling_ddpm.py"),
os.path.join(self.diffusers_dir, "schedulers/scheduling_ddpm.py"),
)
def tearDown(self):
check_copies.DIFFUSERS_PATH = "src/diffusers"
shutil.rmtree(self.diffusers_dir)
def check_copy_consistency(self, comment, class_name, class_code, overwrite_result=None):
code = comment + f"\nclass {class_name}(nn.Module):\n" + class_code
if overwrite_result is not None:
expected = comment + f"\nclass {class_name}(nn.Module):\n" + overwrite_result
code = check_copies.run_ruff(code)
fname = os.path.join(self.diffusers_dir, "new_code.py")
with open(fname, "w", newline="\n") as f:
f.write(code)
if overwrite_result is None:
self.assertTrue(len(check_copies.is_copy_consistent(fname)) == 0)
else:
check_copies.is_copy_consistent(f.name, overwrite=True)
with open(fname, "r") as f:
self.assertTrue(f.read(), expected)
def test_find_code_in_diffusers(self):
code = check_copies.find_code_in_diffusers("schedulers.scheduling_ddpm.DDPMSchedulerOutput")
self.assertEqual(code, REFERENCE_CODE)
def test_is_copy_consistent(self):
# Base copy consistency
self.check_copy_consistency(
"# Copied from diffusers.schedulers.scheduling_ddpm.DDPMSchedulerOutput",
"DDPMSchedulerOutput",
REFERENCE_CODE + "\n",
)
# With no empty line at the end
self.check_copy_consistency(
"# Copied from diffusers.schedulers.scheduling_ddpm.DDPMSchedulerOutput",
"DDPMSchedulerOutput",
REFERENCE_CODE,
)
# Copy consistency with rename
self.check_copy_consistency(
"# Copied from diffusers.schedulers.scheduling_ddpm.DDPMSchedulerOutput with DDPM->Test",
"TestSchedulerOutput",
re.sub("DDPM", "Test", REFERENCE_CODE),
)
# Copy consistency with a really long name
long_class_name = "TestClassWithAReallyLongNameBecauseSomePeopleLikeThatForSomeReason"
self.check_copy_consistency(
f"# Copied from diffusers.schedulers.scheduling_ddpm.DDPMSchedulerOutput with DDPM->{long_class_name}",
f"{long_class_name}SchedulerOutput",
re.sub("Bert", long_class_name, REFERENCE_CODE),
)
# Copy consistency with overwrite
self.check_copy_consistency(
"# Copied from diffusers.schedulers.scheduling_ddpm.DDPMSchedulerOutput with DDPM->Test",
"TestSchedulerOutput",
REFERENCE_CODE,
overwrite_result=re.sub("DDPM", "Test", REFERENCE_CODE),
)
|
diffusers/tests/others/test_check_copies.py/0
|
{
"file_path": "diffusers/tests/others/test_check_copies.py",
"repo_id": "diffusers",
"token_count": 2028
}
| 144
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import numpy as np
import torch
from transformers import AutoTokenizer, CLIPTextConfig, CLIPTextModelWithProjection, CLIPTokenizer, T5EncoderModel
from diffusers import (
AutoencoderKL,
FlowMatchEulerDiscreteScheduler,
SD3Transformer2DModel,
StableDiffusion3ControlNetInpaintingPipeline,
)
from diffusers.models import SD3ControlNetModel
from diffusers.utils.testing_utils import (
enable_full_determinism,
torch_device,
)
from diffusers.utils.torch_utils import randn_tensor
from ..test_pipelines_common import PipelineTesterMixin
enable_full_determinism()
class StableDiffusion3ControlInpaintNetPipelineFastTests(unittest.TestCase, PipelineTesterMixin):
pipeline_class = StableDiffusion3ControlNetInpaintingPipeline
params = frozenset(
[
"prompt",
"height",
"width",
"guidance_scale",
"negative_prompt",
"prompt_embeds",
"negative_prompt_embeds",
]
)
batch_params = frozenset(["prompt", "negative_prompt"])
def get_dummy_components(self):
torch.manual_seed(0)
transformer = SD3Transformer2DModel(
sample_size=32,
patch_size=1,
in_channels=8,
num_layers=4,
attention_head_dim=8,
num_attention_heads=4,
joint_attention_dim=32,
caption_projection_dim=32,
pooled_projection_dim=64,
out_channels=8,
)
torch.manual_seed(0)
controlnet = SD3ControlNetModel(
sample_size=32,
patch_size=1,
in_channels=8,
num_layers=1,
attention_head_dim=8,
num_attention_heads=4,
joint_attention_dim=32,
caption_projection_dim=32,
pooled_projection_dim=64,
out_channels=8,
extra_conditioning_channels=1,
)
clip_text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
hidden_act="gelu",
projection_dim=32,
)
torch.manual_seed(0)
text_encoder = CLIPTextModelWithProjection(clip_text_encoder_config)
torch.manual_seed(0)
text_encoder_2 = CLIPTextModelWithProjection(clip_text_encoder_config)
torch.manual_seed(0)
text_encoder_3 = T5EncoderModel.from_pretrained("hf-internal-testing/tiny-random-t5")
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
tokenizer_2 = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
tokenizer_3 = AutoTokenizer.from_pretrained("hf-internal-testing/tiny-random-t5")
torch.manual_seed(0)
vae = AutoencoderKL(
sample_size=32,
in_channels=3,
out_channels=3,
block_out_channels=(4,),
layers_per_block=1,
latent_channels=8,
norm_num_groups=1,
use_quant_conv=False,
use_post_quant_conv=False,
shift_factor=0.0609,
scaling_factor=1.5035,
)
scheduler = FlowMatchEulerDiscreteScheduler()
return {
"scheduler": scheduler,
"text_encoder": text_encoder,
"text_encoder_2": text_encoder_2,
"text_encoder_3": text_encoder_3,
"tokenizer": tokenizer,
"tokenizer_2": tokenizer_2,
"tokenizer_3": tokenizer_3,
"transformer": transformer,
"vae": vae,
"controlnet": controlnet,
}
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device="cpu").manual_seed(seed)
control_image = randn_tensor(
(1, 3, 32, 32),
generator=generator,
device=torch.device(device),
dtype=torch.float16,
)
control_mask = randn_tensor(
(1, 1, 32, 32),
generator=generator,
device=torch.device(device),
dtype=torch.float16,
)
controlnet_conditioning_scale = 0.95
inputs = {
"prompt": "A painting of a squirrel eating a burger",
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 7.0,
"output_type": "np",
"control_image": control_image,
"control_mask": control_mask,
"controlnet_conditioning_scale": controlnet_conditioning_scale,
}
return inputs
def test_controlnet_inpaint_sd3(self):
components = self.get_dummy_components()
sd_pipe = StableDiffusion3ControlNetInpaintingPipeline(**components)
sd_pipe = sd_pipe.to(torch_device, dtype=torch.float16)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(torch_device)
output = sd_pipe(**inputs)
image = output.images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 32, 32, 3)
expected_slice = np.array(
[0.51708984, 0.7421875, 0.4580078, 0.6435547, 0.65625, 0.43603516, 0.5151367, 0.65722656, 0.60839844]
)
assert (
np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
), f"Expected: {expected_slice}, got: {image_slice.flatten()}"
@unittest.skip("xFormersAttnProcessor does not work with SD3 Joint Attention")
def test_xformers_attention_forwardGenerator_pass(self):
pass
|
diffusers/tests/pipelines/controlnet_sd3/test_controlnet_inpaint_sd3.py/0
|
{
"file_path": "diffusers/tests/pipelines/controlnet_sd3/test_controlnet_inpaint_sd3.py",
"repo_id": "diffusers",
"token_count": 3144
}
| 145
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import random
import unittest
import numpy as np
import torch
from PIL import Image
from transformers import CLIPImageProcessor, CLIPVisionConfig
from diffusers import AutoencoderKL, PaintByExamplePipeline, PNDMScheduler, UNet2DConditionModel
from diffusers.pipelines.paint_by_example import PaintByExampleImageEncoder
from diffusers.utils.testing_utils import (
enable_full_determinism,
floats_tensor,
load_image,
nightly,
require_torch_gpu,
torch_device,
)
from ..pipeline_params import IMAGE_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS, IMAGE_GUIDED_IMAGE_INPAINTING_PARAMS
from ..test_pipelines_common import PipelineTesterMixin
enable_full_determinism()
class PaintByExamplePipelineFastTests(PipelineTesterMixin, unittest.TestCase):
pipeline_class = PaintByExamplePipeline
params = IMAGE_GUIDED_IMAGE_INPAINTING_PARAMS
batch_params = IMAGE_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS
image_params = frozenset([]) # TO_DO: update the image_prams once refactored VaeImageProcessor.preprocess
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(32, 64),
layers_per_block=2,
sample_size=32,
in_channels=9,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
cross_attention_dim=32,
)
scheduler = PNDMScheduler(skip_prk_steps=True)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
)
torch.manual_seed(0)
config = CLIPVisionConfig(
hidden_size=32,
projection_dim=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
image_size=32,
patch_size=4,
)
image_encoder = PaintByExampleImageEncoder(config, proj_size=32)
feature_extractor = CLIPImageProcessor(crop_size=32, size=32)
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"image_encoder": image_encoder,
"safety_checker": None,
"feature_extractor": feature_extractor,
}
return components
def convert_to_pt(self, image):
image = np.array(image.convert("RGB"))
image = image[None].transpose(0, 3, 1, 2)
image = torch.from_numpy(image).to(dtype=torch.float32) / 127.5 - 1.0
return image
def get_dummy_inputs(self, device="cpu", seed=0):
# TODO: use tensor inputs instead of PIL, this is here just to leave the old expected_slices untouched
image = floats_tensor((1, 3, 32, 32), rng=random.Random(seed)).to(device)
image = image.cpu().permute(0, 2, 3, 1)[0]
init_image = Image.fromarray(np.uint8(image)).convert("RGB").resize((64, 64))
mask_image = Image.fromarray(np.uint8(image + 4)).convert("RGB").resize((64, 64))
example_image = Image.fromarray(np.uint8(image)).convert("RGB").resize((32, 32))
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"example_image": example_image,
"image": init_image,
"mask_image": mask_image,
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 6.0,
"output_type": "np",
}
return inputs
def test_paint_by_example_inpaint(self):
components = self.get_dummy_components()
# make sure here that pndm scheduler skips prk
pipe = PaintByExamplePipeline(**components)
pipe = pipe.to("cpu")
pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs()
output = pipe(**inputs)
image = output.images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.4686, 0.5687, 0.4007, 0.5218, 0.5741, 0.4482, 0.4940, 0.4629, 0.4503])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
def test_paint_by_example_image_tensor(self):
device = "cpu"
inputs = self.get_dummy_inputs()
inputs.pop("mask_image")
image = self.convert_to_pt(inputs.pop("image"))
mask_image = image.clamp(0, 1) / 2
# make sure here that pndm scheduler skips prk
pipe = PaintByExamplePipeline(**self.get_dummy_components())
pipe = pipe.to(device)
pipe.set_progress_bar_config(disable=None)
output = pipe(image=image, mask_image=mask_image[:, 0], **inputs)
out_1 = output.images
image = image.cpu().permute(0, 2, 3, 1)[0]
mask_image = mask_image.cpu().permute(0, 2, 3, 1)[0]
image = Image.fromarray(np.uint8(image)).convert("RGB")
mask_image = Image.fromarray(np.uint8(mask_image)).convert("RGB")
output = pipe(**self.get_dummy_inputs())
out_2 = output.images
assert out_1.shape == (1, 64, 64, 3)
assert np.abs(out_1.flatten() - out_2.flatten()).max() < 5e-2
def test_inference_batch_single_identical(self):
super().test_inference_batch_single_identical(expected_max_diff=3e-3)
@nightly
@require_torch_gpu
class PaintByExamplePipelineIntegrationTests(unittest.TestCase):
def setUp(self):
# clean up the VRAM before each test
super().setUp()
gc.collect()
torch.cuda.empty_cache()
def tearDown(self):
# clean up the VRAM after each test
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_paint_by_example(self):
# make sure here that pndm scheduler skips prk
init_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
"/paint_by_example/dog_in_bucket.png"
)
mask_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
"/paint_by_example/mask.png"
)
example_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
"/paint_by_example/panda.jpg"
)
pipe = PaintByExamplePipeline.from_pretrained("Fantasy-Studio/Paint-by-Example")
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
generator = torch.manual_seed(321)
output = pipe(
image=init_image,
mask_image=mask_image,
example_image=example_image,
generator=generator,
guidance_scale=5.0,
num_inference_steps=50,
output_type="np",
)
image = output.images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 512, 512, 3)
expected_slice = np.array([0.4834, 0.4811, 0.4874, 0.5122, 0.5081, 0.5144, 0.5291, 0.5290, 0.5374])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
|
diffusers/tests/pipelines/paint_by_example/test_paint_by_example.py/0
|
{
"file_path": "diffusers/tests/pipelines/paint_by_example/test_paint_by_example.py",
"repo_id": "diffusers",
"token_count": 3723
}
| 146
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import unittest
import numpy as np
import torch
from transformers import (
T5EncoderModel,
T5Tokenizer,
)
from diffusers import (
AutoencoderOobleck,
CosineDPMSolverMultistepScheduler,
StableAudioDiTModel,
StableAudioPipeline,
StableAudioProjectionModel,
)
from diffusers.utils import is_xformers_available
from diffusers.utils.testing_utils import enable_full_determinism, nightly, require_torch_gpu, torch_device
from ..pipeline_params import TEXT_TO_AUDIO_BATCH_PARAMS
from ..test_pipelines_common import PipelineTesterMixin
enable_full_determinism()
class StableAudioPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
pipeline_class = StableAudioPipeline
params = frozenset(
[
"prompt",
"audio_end_in_s",
"audio_start_in_s",
"guidance_scale",
"negative_prompt",
"prompt_embeds",
"negative_prompt_embeds",
"initial_audio_waveforms",
]
)
batch_params = TEXT_TO_AUDIO_BATCH_PARAMS
required_optional_params = frozenset(
[
"num_inference_steps",
"num_waveforms_per_prompt",
"generator",
"latents",
"output_type",
"return_dict",
"callback",
"callback_steps",
]
)
def get_dummy_components(self):
torch.manual_seed(0)
transformer = StableAudioDiTModel(
sample_size=4,
in_channels=3,
num_layers=2,
attention_head_dim=4,
num_key_value_attention_heads=2,
out_channels=3,
cross_attention_dim=4,
time_proj_dim=8,
global_states_input_dim=8,
cross_attention_input_dim=4,
)
scheduler = CosineDPMSolverMultistepScheduler(
solver_order=2,
prediction_type="v_prediction",
sigma_data=1.0,
sigma_schedule="exponential",
)
torch.manual_seed(0)
vae = AutoencoderOobleck(
encoder_hidden_size=6,
downsampling_ratios=[1, 2],
decoder_channels=3,
decoder_input_channels=3,
audio_channels=2,
channel_multiples=[2, 4],
sampling_rate=4,
)
torch.manual_seed(0)
t5_repo_id = "hf-internal-testing/tiny-random-T5ForConditionalGeneration"
text_encoder = T5EncoderModel.from_pretrained(t5_repo_id)
tokenizer = T5Tokenizer.from_pretrained(t5_repo_id, truncation=True, model_max_length=25)
torch.manual_seed(0)
projection_model = StableAudioProjectionModel(
text_encoder_dim=text_encoder.config.d_model,
conditioning_dim=4,
min_value=0,
max_value=32,
)
components = {
"transformer": transformer,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"projection_model": projection_model,
}
return components
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "A hammer hitting a wooden surface",
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 6.0,
}
return inputs
def test_save_load_local(self):
# increase tolerance from 1e-4 -> 7e-3 to account for large composite model
super().test_save_load_local(expected_max_difference=7e-3)
def test_save_load_optional_components(self):
# increase tolerance from 1e-4 -> 7e-3 to account for large composite model
super().test_save_load_optional_components(expected_max_difference=7e-3)
def test_stable_audio_ddim(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(torch_device)
stable_audio_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
output = stable_audio_pipe(**inputs)
audio = output.audios[0]
assert audio.ndim == 2
assert audio.shape == (2, 7)
def test_stable_audio_without_prompts(self):
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(torch_device)
stable_audio_pipe = stable_audio_pipe.to(torch_device)
stable_audio_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(torch_device)
inputs["prompt"] = 3 * [inputs["prompt"]]
# forward
output = stable_audio_pipe(**inputs)
audio_1 = output.audios[0]
inputs = self.get_dummy_inputs(torch_device)
prompt = 3 * [inputs.pop("prompt")]
text_inputs = stable_audio_pipe.tokenizer(
prompt,
padding="max_length",
max_length=stable_audio_pipe.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
).to(torch_device)
text_input_ids = text_inputs.input_ids
attention_mask = text_inputs.attention_mask
prompt_embeds = stable_audio_pipe.text_encoder(
text_input_ids,
attention_mask=attention_mask,
)[0]
inputs["prompt_embeds"] = prompt_embeds
inputs["attention_mask"] = attention_mask
# forward
output = stable_audio_pipe(**inputs)
audio_2 = output.audios[0]
assert (audio_1 - audio_2).abs().max() < 1e-2
def test_stable_audio_negative_without_prompts(self):
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(torch_device)
stable_audio_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(torch_device)
negative_prompt = 3 * ["this is a negative prompt"]
inputs["negative_prompt"] = negative_prompt
inputs["prompt"] = 3 * [inputs["prompt"]]
# forward
output = stable_audio_pipe(**inputs)
audio_1 = output.audios[0]
inputs = self.get_dummy_inputs(torch_device)
prompt = 3 * [inputs.pop("prompt")]
text_inputs = stable_audio_pipe.tokenizer(
prompt,
padding="max_length",
max_length=stable_audio_pipe.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
).to(torch_device)
text_input_ids = text_inputs.input_ids
attention_mask = text_inputs.attention_mask
prompt_embeds = stable_audio_pipe.text_encoder(
text_input_ids,
attention_mask=attention_mask,
)[0]
inputs["prompt_embeds"] = prompt_embeds
inputs["attention_mask"] = attention_mask
negative_text_inputs = stable_audio_pipe.tokenizer(
negative_prompt,
padding="max_length",
max_length=stable_audio_pipe.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
).to(torch_device)
negative_text_input_ids = negative_text_inputs.input_ids
negative_attention_mask = negative_text_inputs.attention_mask
negative_prompt_embeds = stable_audio_pipe.text_encoder(
negative_text_input_ids,
attention_mask=negative_attention_mask,
)[0]
inputs["negative_prompt_embeds"] = negative_prompt_embeds
inputs["negative_attention_mask"] = negative_attention_mask
# forward
output = stable_audio_pipe(**inputs)
audio_2 = output.audios[0]
assert (audio_1 - audio_2).abs().max() < 1e-2
def test_stable_audio_negative_prompt(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(device)
stable_audio_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
negative_prompt = "egg cracking"
output = stable_audio_pipe(**inputs, negative_prompt=negative_prompt)
audio = output.audios[0]
assert audio.ndim == 2
assert audio.shape == (2, 7)
def test_stable_audio_num_waveforms_per_prompt(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(device)
stable_audio_pipe.set_progress_bar_config(disable=None)
prompt = "A hammer hitting a wooden surface"
# test num_waveforms_per_prompt=1 (default)
audios = stable_audio_pipe(prompt, num_inference_steps=2).audios
assert audios.shape == (1, 2, 7)
# test num_waveforms_per_prompt=1 (default) for batch of prompts
batch_size = 2
audios = stable_audio_pipe([prompt] * batch_size, num_inference_steps=2).audios
assert audios.shape == (batch_size, 2, 7)
# test num_waveforms_per_prompt for single prompt
num_waveforms_per_prompt = 2
audios = stable_audio_pipe(
prompt, num_inference_steps=2, num_waveforms_per_prompt=num_waveforms_per_prompt
).audios
assert audios.shape == (num_waveforms_per_prompt, 2, 7)
# test num_waveforms_per_prompt for batch of prompts
batch_size = 2
audios = stable_audio_pipe(
[prompt] * batch_size, num_inference_steps=2, num_waveforms_per_prompt=num_waveforms_per_prompt
).audios
assert audios.shape == (batch_size * num_waveforms_per_prompt, 2, 7)
def test_stable_audio_audio_end_in_s(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(torch_device)
stable_audio_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
output = stable_audio_pipe(audio_end_in_s=1.5, **inputs)
audio = output.audios[0]
assert audio.ndim == 2
assert audio.shape[1] / stable_audio_pipe.vae.sampling_rate == 1.5
output = stable_audio_pipe(audio_end_in_s=1.1875, **inputs)
audio = output.audios[0]
assert audio.ndim == 2
assert audio.shape[1] / stable_audio_pipe.vae.sampling_rate == 1.0
def test_attention_slicing_forward_pass(self):
self._test_attention_slicing_forward_pass(test_mean_pixel_difference=False)
def test_inference_batch_single_identical(self):
self._test_inference_batch_single_identical(expected_max_diff=5e-4)
@unittest.skipIf(
torch_device != "cuda" or not is_xformers_available(),
reason="XFormers attention is only available with CUDA and `xformers` installed",
)
def test_xformers_attention_forwardGenerator_pass(self):
self._test_xformers_attention_forwardGenerator_pass(test_mean_pixel_difference=False)
def test_stable_audio_input_waveform(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
stable_audio_pipe = StableAudioPipeline(**components)
stable_audio_pipe = stable_audio_pipe.to(device)
stable_audio_pipe.set_progress_bar_config(disable=None)
prompt = "A hammer hitting a wooden surface"
initial_audio_waveforms = torch.ones((1, 5))
# test raises error when no sampling rate
with self.assertRaises(ValueError):
audios = stable_audio_pipe(
prompt, num_inference_steps=2, initial_audio_waveforms=initial_audio_waveforms
).audios
# test raises error when wrong sampling rate
with self.assertRaises(ValueError):
audios = stable_audio_pipe(
prompt,
num_inference_steps=2,
initial_audio_waveforms=initial_audio_waveforms,
initial_audio_sampling_rate=stable_audio_pipe.vae.sampling_rate - 1,
).audios
audios = stable_audio_pipe(
prompt,
num_inference_steps=2,
initial_audio_waveforms=initial_audio_waveforms,
initial_audio_sampling_rate=stable_audio_pipe.vae.sampling_rate,
).audios
assert audios.shape == (1, 2, 7)
# test works with num_waveforms_per_prompt
num_waveforms_per_prompt = 2
audios = stable_audio_pipe(
prompt,
num_inference_steps=2,
num_waveforms_per_prompt=num_waveforms_per_prompt,
initial_audio_waveforms=initial_audio_waveforms,
initial_audio_sampling_rate=stable_audio_pipe.vae.sampling_rate,
).audios
assert audios.shape == (num_waveforms_per_prompt, 2, 7)
# test num_waveforms_per_prompt for batch of prompts and input audio (two channels)
batch_size = 2
initial_audio_waveforms = torch.ones((batch_size, 2, 5))
audios = stable_audio_pipe(
[prompt] * batch_size,
num_inference_steps=2,
num_waveforms_per_prompt=num_waveforms_per_prompt,
initial_audio_waveforms=initial_audio_waveforms,
initial_audio_sampling_rate=stable_audio_pipe.vae.sampling_rate,
).audios
assert audios.shape == (batch_size * num_waveforms_per_prompt, 2, 7)
@unittest.skip("Not supported yet")
def test_sequential_cpu_offload_forward_pass(self):
pass
@unittest.skip("Not supported yet")
def test_sequential_offload_forward_pass_twice(self):
pass
@nightly
@require_torch_gpu
class StableAudioPipelineIntegrationTests(unittest.TestCase):
def setUp(self):
super().setUp()
gc.collect()
torch.cuda.empty_cache()
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def get_inputs(self, device, generator_device="cpu", dtype=torch.float32, seed=0):
generator = torch.Generator(device=generator_device).manual_seed(seed)
latents = np.random.RandomState(seed).standard_normal((1, 64, 1024))
latents = torch.from_numpy(latents).to(device=device, dtype=dtype)
inputs = {
"prompt": "A hammer hitting a wooden surface",
"latents": latents,
"generator": generator,
"num_inference_steps": 3,
"audio_end_in_s": 30,
"guidance_scale": 2.5,
}
return inputs
def test_stable_audio(self):
stable_audio_pipe = StableAudioPipeline.from_pretrained("stabilityai/stable-audio-open-1.0")
stable_audio_pipe = stable_audio_pipe.to(torch_device)
stable_audio_pipe.set_progress_bar_config(disable=None)
inputs = self.get_inputs(torch_device)
inputs["num_inference_steps"] = 25
audio = stable_audio_pipe(**inputs).audios[0]
assert audio.ndim == 2
assert audio.shape == (2, int(inputs["audio_end_in_s"] * stable_audio_pipe.vae.sampling_rate))
# check the portion of the generated audio with the largest dynamic range (reduces flakiness)
audio_slice = audio[0, 447590:447600]
# fmt: off
expected_slice = np.array(
[-0.0278, 0.1096, 0.1877, 0.3178, 0.5329, 0.6990, 0.6972, 0.6186, 0.5608, 0.5060]
)
# fmt: one
max_diff = np.abs(expected_slice - audio_slice.detach().cpu().numpy()).max()
assert max_diff < 1.5e-3
|
diffusers/tests/pipelines/stable_audio/test_stable_audio.py/0
|
{
"file_path": "diffusers/tests/pipelines/stable_audio/test_stable_audio.py",
"repo_id": "diffusers",
"token_count": 7600
}
| 147
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import unittest
import numpy as np
import torch
from transformers import CLIPTextConfig, CLIPTextModel, CLIPTokenizer
from diffusers import (
AutoencoderKL,
DDIMScheduler,
StableDiffusionAttendAndExcitePipeline,
UNet2DConditionModel,
)
from diffusers.utils.testing_utils import (
load_numpy,
nightly,
numpy_cosine_similarity_distance,
require_torch_gpu,
skip_mps,
torch_device,
)
from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_IMAGE_PARAMS, TEXT_TO_IMAGE_PARAMS
from ..test_pipelines_common import (
PipelineFromPipeTesterMixin,
PipelineKarrasSchedulerTesterMixin,
PipelineLatentTesterMixin,
PipelineTesterMixin,
)
torch.backends.cuda.matmul.allow_tf32 = False
@skip_mps
class StableDiffusionAttendAndExcitePipelineFastTests(
PipelineLatentTesterMixin,
PipelineKarrasSchedulerTesterMixin,
PipelineTesterMixin,
PipelineFromPipeTesterMixin,
unittest.TestCase,
):
pipeline_class = StableDiffusionAttendAndExcitePipeline
test_attention_slicing = False
params = TEXT_TO_IMAGE_PARAMS
batch_params = TEXT_TO_IMAGE_BATCH_PARAMS.union({"token_indices"})
image_params = TEXT_TO_IMAGE_IMAGE_PARAMS
image_latents_params = TEXT_TO_IMAGE_IMAGE_PARAMS
# Attend and excite requires being able to run a backward pass at
# inference time. There's no deterministic backward operator for pad
@classmethod
def setUpClass(cls):
super().setUpClass()
torch.use_deterministic_algorithms(False)
@classmethod
def tearDownClass(cls):
super().tearDownClass()
torch.use_deterministic_algorithms(True)
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(32, 64),
layers_per_block=1,
sample_size=32,
in_channels=4,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
cross_attention_dim=32,
# SD2-specific config below
attention_head_dim=(2, 4),
use_linear_projection=True,
)
scheduler = DDIMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
clip_sample=False,
set_alpha_to_one=False,
)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
sample_size=128,
)
torch.manual_seed(0)
text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
# SD2-specific config below
hidden_act="gelu",
projection_dim=512,
)
text_encoder = CLIPTextModel(text_encoder_config)
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"safety_checker": None,
"feature_extractor": None,
}
return components
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "a cat and a frog",
"token_indices": [2, 5],
"generator": generator,
"num_inference_steps": 1,
"guidance_scale": 6.0,
"output_type": "np",
"max_iter_to_alter": 2,
"thresholds": {0: 0.7},
}
return inputs
def test_dict_tuple_outputs_equivalent(self):
expected_slice = None
if torch_device == "cpu":
expected_slice = np.array([0.6391, 0.6290, 0.4860, 0.5134, 0.5550, 0.4577, 0.5033, 0.5023, 0.4538])
super().test_dict_tuple_outputs_equivalent(expected_slice=expected_slice, expected_max_difference=3e-3)
def test_inference(self):
device = "cpu"
components = self.get_dummy_components()
pipe = self.pipeline_class(**components)
pipe.to(device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
self.assertEqual(image.shape, (1, 64, 64, 3))
expected_slice = np.array(
[0.63905364, 0.62897307, 0.48599017, 0.5133624, 0.5550048, 0.45769516, 0.50326973, 0.5023139, 0.45384496]
)
max_diff = np.abs(image_slice.flatten() - expected_slice).max()
self.assertLessEqual(max_diff, 1e-3)
def test_sequential_cpu_offload_forward_pass(self):
super().test_sequential_cpu_offload_forward_pass(expected_max_diff=5e-4)
def test_inference_batch_consistent(self):
# NOTE: Larger batch sizes cause this test to timeout, only test on smaller batches
self._test_inference_batch_consistent(batch_sizes=[1, 2])
def test_inference_batch_single_identical(self):
self._test_inference_batch_single_identical(batch_size=2, expected_max_diff=7e-4)
def test_pt_np_pil_outputs_equivalent(self):
super().test_pt_np_pil_outputs_equivalent(expected_max_diff=5e-4)
def test_save_load_local(self):
super().test_save_load_local(expected_max_difference=5e-4)
def test_save_load_optional_components(self):
super().test_save_load_optional_components(expected_max_difference=4e-4)
def test_karras_schedulers_shape(self):
super().test_karras_schedulers_shape(num_inference_steps_for_strength_for_iterations=3)
def test_from_pipe_consistent_forward_pass_cpu_offload(self):
super().test_from_pipe_consistent_forward_pass_cpu_offload(expected_max_diff=5e-3)
@require_torch_gpu
@nightly
class StableDiffusionAttendAndExcitePipelineIntegrationTests(unittest.TestCase):
# Attend and excite requires being able to run a backward pass at
# inference time. There's no deterministic backward operator for pad
@classmethod
def setUpClass(cls):
super().setUpClass()
torch.use_deterministic_algorithms(False)
@classmethod
def tearDownClass(cls):
super().tearDownClass()
torch.use_deterministic_algorithms(True)
def setUp(self):
super().setUp()
gc.collect()
torch.cuda.empty_cache()
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_attend_and_excite_fp16(self):
generator = torch.manual_seed(51)
pipe = StableDiffusionAttendAndExcitePipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4", safety_checker=None, torch_dtype=torch.float16
)
pipe.to("cuda")
prompt = "a painting of an elephant with glasses"
token_indices = [5, 7]
image = pipe(
prompt=prompt,
token_indices=token_indices,
guidance_scale=7.5,
generator=generator,
num_inference_steps=5,
max_iter_to_alter=5,
output_type="np",
).images[0]
expected_image = load_numpy(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/attend-and-excite/elephant_glasses.npy"
)
max_diff = numpy_cosine_similarity_distance(image.flatten(), expected_image.flatten())
assert max_diff < 5e-1
|
diffusers/tests/pipelines/stable_diffusion_2/test_stable_diffusion_attend_and_excite.py/0
|
{
"file_path": "diffusers/tests/pipelines/stable_diffusion_2/test_stable_diffusion_attend_and_excite.py",
"repo_id": "diffusers",
"token_count": 4012
}
| 148
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import numpy as np
import torch
from transformers import CLIPTextConfig, CLIPTextModel, CLIPTokenizer
from diffusers import (
AutoencoderKL,
DDIMScheduler,
EulerAncestralDiscreteScheduler,
StableDiffusionGLIGENPipeline,
UNet2DConditionModel,
)
from diffusers.utils.testing_utils import enable_full_determinism
from ..pipeline_params import (
TEXT_TO_IMAGE_BATCH_PARAMS,
TEXT_TO_IMAGE_IMAGE_PARAMS,
TEXT_TO_IMAGE_PARAMS,
)
from ..test_pipelines_common import (
PipelineFromPipeTesterMixin,
PipelineKarrasSchedulerTesterMixin,
PipelineLatentTesterMixin,
PipelineTesterMixin,
)
enable_full_determinism()
class GligenPipelineFastTests(
PipelineLatentTesterMixin,
PipelineKarrasSchedulerTesterMixin,
PipelineTesterMixin,
PipelineFromPipeTesterMixin,
unittest.TestCase,
):
pipeline_class = StableDiffusionGLIGENPipeline
params = TEXT_TO_IMAGE_PARAMS | {"gligen_phrases", "gligen_boxes"}
batch_params = TEXT_TO_IMAGE_BATCH_PARAMS
image_params = TEXT_TO_IMAGE_IMAGE_PARAMS
image_latents_params = TEXT_TO_IMAGE_IMAGE_PARAMS
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(32, 64),
layers_per_block=2,
sample_size=32,
in_channels=4,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
cross_attention_dim=32,
attention_type="gated",
)
# unet.position_net = PositionNet(32,32)
scheduler = DDIMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
clip_sample=False,
set_alpha_to_one=False,
)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
sample_size=128,
)
torch.manual_seed(0)
text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
)
text_encoder = CLIPTextModel(text_encoder_config)
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"safety_checker": None,
"feature_extractor": None,
}
return components
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "A modern livingroom",
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 6.0,
"gligen_phrases": ["a birthday cake"],
"gligen_boxes": [[0.2676, 0.6088, 0.4773, 0.7183]],
"output_type": "np",
}
return inputs
def test_stable_diffusion_gligen_default_case(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
sd_pipe = StableDiffusionGLIGENPipeline(**components)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = sd_pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.5069, 0.5561, 0.4577, 0.4792, 0.5203, 0.4089, 0.5039, 0.4919, 0.4499])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
def test_stable_diffusion_gligen_k_euler_ancestral(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
sd_pipe = StableDiffusionGLIGENPipeline(**components)
sd_pipe.scheduler = EulerAncestralDiscreteScheduler.from_config(sd_pipe.scheduler.config)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
output = sd_pipe(**inputs)
image = output.images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.425, 0.494, 0.429, 0.469, 0.525, 0.417, 0.533, 0.5, 0.47])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
def test_attention_slicing_forward_pass(self):
super().test_attention_slicing_forward_pass(expected_max_diff=3e-3)
def test_inference_batch_single_identical(self):
super().test_inference_batch_single_identical(batch_size=3, expected_max_diff=3e-3)
|
diffusers/tests/pipelines/stable_diffusion_gligen/test_stable_diffusion_gligen.py/0
|
{
"file_path": "diffusers/tests/pipelines/stable_diffusion_gligen/test_stable_diffusion_gligen.py",
"repo_id": "diffusers",
"token_count": 2800
}
| 149
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import copy
import gc
import tempfile
import unittest
import numpy as np
import torch
from transformers import CLIPTextConfig, CLIPTextModel, CLIPTextModelWithProjection, CLIPTokenizer
from diffusers import (
AutoencoderKL,
DDIMScheduler,
DPMSolverMultistepScheduler,
EulerDiscreteScheduler,
HeunDiscreteScheduler,
LCMScheduler,
StableDiffusionXLImg2ImgPipeline,
StableDiffusionXLPipeline,
UNet2DConditionModel,
UniPCMultistepScheduler,
)
from diffusers.utils.testing_utils import (
enable_full_determinism,
load_image,
numpy_cosine_similarity_distance,
require_torch_gpu,
slow,
torch_device,
)
from ..pipeline_params import (
TEXT_TO_IMAGE_BATCH_PARAMS,
TEXT_TO_IMAGE_CALLBACK_CFG_PARAMS,
TEXT_TO_IMAGE_IMAGE_PARAMS,
TEXT_TO_IMAGE_PARAMS,
)
from ..test_pipelines_common import (
IPAdapterTesterMixin,
PipelineLatentTesterMixin,
PipelineTesterMixin,
SDFunctionTesterMixin,
SDXLOptionalComponentsTesterMixin,
)
enable_full_determinism()
class StableDiffusionXLPipelineFastTests(
SDFunctionTesterMixin,
IPAdapterTesterMixin,
PipelineLatentTesterMixin,
PipelineTesterMixin,
SDXLOptionalComponentsTesterMixin,
unittest.TestCase,
):
pipeline_class = StableDiffusionXLPipeline
params = TEXT_TO_IMAGE_PARAMS
batch_params = TEXT_TO_IMAGE_BATCH_PARAMS
image_params = TEXT_TO_IMAGE_IMAGE_PARAMS
image_latents_params = TEXT_TO_IMAGE_IMAGE_PARAMS
callback_cfg_params = TEXT_TO_IMAGE_CALLBACK_CFG_PARAMS.union({"add_text_embeds", "add_time_ids"})
def get_dummy_components(self, time_cond_proj_dim=None):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(2, 4),
layers_per_block=2,
time_cond_proj_dim=time_cond_proj_dim,
sample_size=32,
in_channels=4,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
# SD2-specific config below
attention_head_dim=(2, 4),
use_linear_projection=True,
addition_embed_type="text_time",
addition_time_embed_dim=8,
transformer_layers_per_block=(1, 2),
projection_class_embeddings_input_dim=80, # 6 * 8 + 32
cross_attention_dim=64,
norm_num_groups=1,
)
scheduler = EulerDiscreteScheduler(
beta_start=0.00085,
beta_end=0.012,
steps_offset=1,
beta_schedule="scaled_linear",
timestep_spacing="leading",
)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
sample_size=128,
)
torch.manual_seed(0)
text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
# SD2-specific config below
hidden_act="gelu",
projection_dim=32,
)
text_encoder = CLIPTextModel(text_encoder_config)
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
text_encoder_2 = CLIPTextModelWithProjection(text_encoder_config)
tokenizer_2 = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"text_encoder_2": text_encoder_2,
"tokenizer_2": tokenizer_2,
"image_encoder": None,
"feature_extractor": None,
}
return components
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "A painting of a squirrel eating a burger",
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 5.0,
"output_type": "np",
}
return inputs
def test_stable_diffusion_xl_euler(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = sd_pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.5388, 0.5452, 0.4694, 0.4583, 0.5253, 0.4832, 0.5288, 0.5035, 0.47])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
def test_stable_diffusion_xl_euler_lcm(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components(time_cond_proj_dim=256)
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe.scheduler = LCMScheduler.from_config(sd_pipe.scheduler.config)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = sd_pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.4917, 0.6555, 0.4348, 0.5219, 0.7324, 0.4855, 0.5168, 0.5447, 0.5156])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
def test_stable_diffusion_xl_euler_lcm_custom_timesteps(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components(time_cond_proj_dim=256)
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe.scheduler = LCMScheduler.from_config(sd_pipe.scheduler.config)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
del inputs["num_inference_steps"]
inputs["timesteps"] = [999, 499]
image = sd_pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.4917, 0.6555, 0.4348, 0.5219, 0.7324, 0.4855, 0.5168, 0.5447, 0.5156])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
def test_stable_diffusion_ays(self):
from diffusers.schedulers import AysSchedules
timestep_schedule = AysSchedules["StableDiffusionXLTimesteps"]
sigma_schedule = AysSchedules["StableDiffusionXLSigmas"]
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components(time_cond_proj_dim=256)
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe.scheduler = EulerDiscreteScheduler.from_config(sd_pipe.scheduler.config)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
inputs["num_inference_steps"] = 10
output = sd_pipe(**inputs).images
inputs = self.get_dummy_inputs(device)
inputs["num_inference_steps"] = None
inputs["timesteps"] = timestep_schedule
output_ts = sd_pipe(**inputs).images
inputs = self.get_dummy_inputs(device)
inputs["num_inference_steps"] = None
inputs["sigmas"] = sigma_schedule
output_sigmas = sd_pipe(**inputs).images
assert (
np.abs(output_sigmas.flatten() - output_ts.flatten()).max() < 1e-3
), "ays timesteps and ays sigmas should have the same outputs"
assert (
np.abs(output.flatten() - output_ts.flatten()).max() > 1e-3
), "use ays timesteps should have different outputs"
assert (
np.abs(output.flatten() - output_sigmas.flatten()).max() > 1e-3
), "use ays sigmas should have different outputs"
def test_stable_diffusion_xl_prompt_embeds(self):
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
# forward without prompt embeds
inputs = self.get_dummy_inputs(torch_device)
inputs["prompt"] = 2 * [inputs["prompt"]]
inputs["num_images_per_prompt"] = 2
output = sd_pipe(**inputs)
image_slice_1 = output.images[0, -3:, -3:, -1]
# forward with prompt embeds
inputs = self.get_dummy_inputs(torch_device)
prompt = 2 * [inputs.pop("prompt")]
(
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
) = sd_pipe.encode_prompt(prompt)
output = sd_pipe(
**inputs,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
pooled_prompt_embeds=pooled_prompt_embeds,
negative_pooled_prompt_embeds=negative_pooled_prompt_embeds,
)
image_slice_2 = output.images[0, -3:, -3:, -1]
# make sure that it's equal
assert np.abs(image_slice_1.flatten() - image_slice_2.flatten()).max() < 1e-4
def test_stable_diffusion_xl_negative_prompt_embeds(self):
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
# forward without prompt embeds
inputs = self.get_dummy_inputs(torch_device)
negative_prompt = 3 * ["this is a negative prompt"]
inputs["negative_prompt"] = negative_prompt
inputs["prompt"] = 3 * [inputs["prompt"]]
output = sd_pipe(**inputs)
image_slice_1 = output.images[0, -3:, -3:, -1]
# forward with prompt embeds
inputs = self.get_dummy_inputs(torch_device)
negative_prompt = 3 * ["this is a negative prompt"]
prompt = 3 * [inputs.pop("prompt")]
(
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
) = sd_pipe.encode_prompt(prompt, negative_prompt=negative_prompt)
output = sd_pipe(
**inputs,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
pooled_prompt_embeds=pooled_prompt_embeds,
negative_pooled_prompt_embeds=negative_pooled_prompt_embeds,
)
image_slice_2 = output.images[0, -3:, -3:, -1]
# make sure that it's equal
assert np.abs(image_slice_1.flatten() - image_slice_2.flatten()).max() < 1e-4
def test_ip_adapter_single(self):
expected_pipe_slice = None
if torch_device == "cpu":
expected_pipe_slice = np.array([0.5388, 0.5452, 0.4694, 0.4583, 0.5253, 0.4832, 0.5288, 0.5035, 0.4766])
return super().test_ip_adapter_single(expected_pipe_slice=expected_pipe_slice)
def test_attention_slicing_forward_pass(self):
super().test_attention_slicing_forward_pass(expected_max_diff=3e-3)
def test_inference_batch_single_identical(self):
super().test_inference_batch_single_identical(expected_max_diff=3e-3)
def test_save_load_optional_components(self):
self._test_save_load_optional_components()
@require_torch_gpu
def test_stable_diffusion_xl_offloads(self):
pipes = []
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components).to(torch_device)
pipes.append(sd_pipe)
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe.enable_model_cpu_offload()
pipes.append(sd_pipe)
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe.enable_sequential_cpu_offload()
pipes.append(sd_pipe)
image_slices = []
for pipe in pipes:
pipe.unet.set_default_attn_processor()
inputs = self.get_dummy_inputs(torch_device)
image = pipe(**inputs).images
image_slices.append(image[0, -3:, -3:, -1].flatten())
assert np.abs(image_slices[0] - image_slices[1]).max() < 1e-3
assert np.abs(image_slices[0] - image_slices[2]).max() < 1e-3
def test_stable_diffusion_xl_img2img_prompt_embeds_only(self):
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
# forward without prompt embeds
generator_device = "cpu"
inputs = self.get_dummy_inputs(generator_device)
inputs["prompt"] = 3 * [inputs["prompt"]]
output = sd_pipe(**inputs)
image_slice_1 = output.images[0, -3:, -3:, -1]
# forward with prompt embeds
generator_device = "cpu"
inputs = self.get_dummy_inputs(generator_device)
prompt = 3 * [inputs.pop("prompt")]
(
prompt_embeds,
_,
pooled_prompt_embeds,
_,
) = sd_pipe.encode_prompt(prompt)
output = sd_pipe(
**inputs,
prompt_embeds=prompt_embeds,
pooled_prompt_embeds=pooled_prompt_embeds,
)
image_slice_2 = output.images[0, -3:, -3:, -1]
# make sure that it's equal
assert np.abs(image_slice_1.flatten() - image_slice_2.flatten()).max() < 1e-4
def test_stable_diffusion_two_xl_mixture_of_denoiser_fast(self):
components = self.get_dummy_components()
pipe_1 = StableDiffusionXLPipeline(**components).to(torch_device)
pipe_1.unet.set_default_attn_processor()
pipe_2 = StableDiffusionXLImg2ImgPipeline(**components).to(torch_device)
pipe_2.unet.set_default_attn_processor()
def assert_run_mixture(
num_steps,
split,
scheduler_cls_orig,
expected_tss,
num_train_timesteps=pipe_1.scheduler.config.num_train_timesteps,
):
inputs = self.get_dummy_inputs(torch_device)
inputs["num_inference_steps"] = num_steps
class scheduler_cls(scheduler_cls_orig):
pass
pipe_1.scheduler = scheduler_cls.from_config(pipe_1.scheduler.config)
pipe_2.scheduler = scheduler_cls.from_config(pipe_2.scheduler.config)
# Let's retrieve the number of timesteps we want to use
pipe_1.scheduler.set_timesteps(num_steps)
expected_steps = pipe_1.scheduler.timesteps.tolist()
if pipe_1.scheduler.order == 2:
expected_steps_1 = list(filter(lambda ts: ts >= split, expected_tss))
expected_steps_2 = expected_steps_1[-1:] + list(filter(lambda ts: ts < split, expected_tss))
expected_steps = expected_steps_1 + expected_steps_2
else:
expected_steps_1 = list(filter(lambda ts: ts >= split, expected_tss))
expected_steps_2 = list(filter(lambda ts: ts < split, expected_tss))
# now we monkey patch step `done_steps`
# list into the step function for testing
done_steps = []
old_step = copy.copy(scheduler_cls.step)
def new_step(self, *args, **kwargs):
done_steps.append(args[1].cpu().item()) # args[1] is always the passed `t`
return old_step(self, *args, **kwargs)
scheduler_cls.step = new_step
inputs_1 = {
**inputs,
**{
"denoising_end": 1.0 - (split / num_train_timesteps),
"output_type": "latent",
},
}
latents = pipe_1(**inputs_1).images[0]
assert expected_steps_1 == done_steps, f"Failure with {scheduler_cls.__name__} and {num_steps} and {split}"
inputs_2 = {
**inputs,
**{
"denoising_start": 1.0 - (split / num_train_timesteps),
"image": latents,
},
}
pipe_2(**inputs_2).images[0]
assert expected_steps_2 == done_steps[len(expected_steps_1) :]
assert expected_steps == done_steps, f"Failure with {scheduler_cls.__name__} and {num_steps} and {split}"
steps = 10
for split in [300, 700]:
for scheduler_cls_timesteps in [
(EulerDiscreteScheduler, [901, 801, 701, 601, 501, 401, 301, 201, 101, 1]),
(
HeunDiscreteScheduler,
[
901.0,
801.0,
801.0,
701.0,
701.0,
601.0,
601.0,
501.0,
501.0,
401.0,
401.0,
301.0,
301.0,
201.0,
201.0,
101.0,
101.0,
1.0,
1.0,
],
),
]:
assert_run_mixture(steps, split, scheduler_cls_timesteps[0], scheduler_cls_timesteps[1])
@slow
def test_stable_diffusion_two_xl_mixture_of_denoiser(self):
components = self.get_dummy_components()
pipe_1 = StableDiffusionXLPipeline(**components).to(torch_device)
pipe_1.unet.set_default_attn_processor()
pipe_2 = StableDiffusionXLImg2ImgPipeline(**components).to(torch_device)
pipe_2.unet.set_default_attn_processor()
def assert_run_mixture(
num_steps,
split,
scheduler_cls_orig,
expected_tss,
num_train_timesteps=pipe_1.scheduler.config.num_train_timesteps,
):
inputs = self.get_dummy_inputs(torch_device)
inputs["num_inference_steps"] = num_steps
class scheduler_cls(scheduler_cls_orig):
pass
pipe_1.scheduler = scheduler_cls.from_config(pipe_1.scheduler.config)
pipe_2.scheduler = scheduler_cls.from_config(pipe_2.scheduler.config)
# Let's retrieve the number of timesteps we want to use
pipe_1.scheduler.set_timesteps(num_steps)
expected_steps = pipe_1.scheduler.timesteps.tolist()
if pipe_1.scheduler.order == 2:
expected_steps_1 = list(filter(lambda ts: ts >= split, expected_tss))
expected_steps_2 = expected_steps_1[-1:] + list(filter(lambda ts: ts < split, expected_tss))
expected_steps = expected_steps_1 + expected_steps_2
else:
expected_steps_1 = list(filter(lambda ts: ts >= split, expected_tss))
expected_steps_2 = list(filter(lambda ts: ts < split, expected_tss))
# now we monkey patch step `done_steps`
# list into the step function for testing
done_steps = []
old_step = copy.copy(scheduler_cls.step)
def new_step(self, *args, **kwargs):
done_steps.append(args[1].cpu().item()) # args[1] is always the passed `t`
return old_step(self, *args, **kwargs)
scheduler_cls.step = new_step
inputs_1 = {
**inputs,
**{
"denoising_end": 1.0 - (split / num_train_timesteps),
"output_type": "latent",
},
}
latents = pipe_1(**inputs_1).images[0]
assert expected_steps_1 == done_steps, f"Failure with {scheduler_cls.__name__} and {num_steps} and {split}"
inputs_2 = {
**inputs,
**{
"denoising_start": 1.0 - (split / num_train_timesteps),
"image": latents,
},
}
pipe_2(**inputs_2).images[0]
assert expected_steps_2 == done_steps[len(expected_steps_1) :]
assert expected_steps == done_steps, f"Failure with {scheduler_cls.__name__} and {num_steps} and {split}"
steps = 10
for split in [300, 500, 700]:
for scheduler_cls_timesteps in [
(DDIMScheduler, [901, 801, 701, 601, 501, 401, 301, 201, 101, 1]),
(EulerDiscreteScheduler, [901, 801, 701, 601, 501, 401, 301, 201, 101, 1]),
(DPMSolverMultistepScheduler, [901, 811, 721, 631, 541, 451, 361, 271, 181, 91]),
(UniPCMultistepScheduler, [901, 811, 721, 631, 541, 451, 361, 271, 181, 91]),
(
HeunDiscreteScheduler,
[
901.0,
801.0,
801.0,
701.0,
701.0,
601.0,
601.0,
501.0,
501.0,
401.0,
401.0,
301.0,
301.0,
201.0,
201.0,
101.0,
101.0,
1.0,
1.0,
],
),
]:
assert_run_mixture(steps, split, scheduler_cls_timesteps[0], scheduler_cls_timesteps[1])
steps = 25
for split in [300, 500, 700]:
for scheduler_cls_timesteps in [
(
DDIMScheduler,
[
961,
921,
881,
841,
801,
761,
721,
681,
641,
601,
561,
521,
481,
441,
401,
361,
321,
281,
241,
201,
161,
121,
81,
41,
1,
],
),
(
EulerDiscreteScheduler,
[
961.0,
921.0,
881.0,
841.0,
801.0,
761.0,
721.0,
681.0,
641.0,
601.0,
561.0,
521.0,
481.0,
441.0,
401.0,
361.0,
321.0,
281.0,
241.0,
201.0,
161.0,
121.0,
81.0,
41.0,
1.0,
],
),
(
DPMSolverMultistepScheduler,
[
951,
913,
875,
837,
799,
761,
723,
685,
647,
609,
571,
533,
495,
457,
419,
381,
343,
305,
267,
229,
191,
153,
115,
77,
39,
],
),
(
UniPCMultistepScheduler,
[
951,
913,
875,
837,
799,
761,
723,
685,
647,
609,
571,
533,
495,
457,
419,
381,
343,
305,
267,
229,
191,
153,
115,
77,
39,
],
),
(
HeunDiscreteScheduler,
[
961.0,
921.0,
921.0,
881.0,
881.0,
841.0,
841.0,
801.0,
801.0,
761.0,
761.0,
721.0,
721.0,
681.0,
681.0,
641.0,
641.0,
601.0,
601.0,
561.0,
561.0,
521.0,
521.0,
481.0,
481.0,
441.0,
441.0,
401.0,
401.0,
361.0,
361.0,
321.0,
321.0,
281.0,
281.0,
241.0,
241.0,
201.0,
201.0,
161.0,
161.0,
121.0,
121.0,
81.0,
81.0,
41.0,
41.0,
1.0,
1.0,
],
),
]:
assert_run_mixture(steps, split, scheduler_cls_timesteps[0], scheduler_cls_timesteps[1])
@slow
def test_stable_diffusion_three_xl_mixture_of_denoiser(self):
components = self.get_dummy_components()
pipe_1 = StableDiffusionXLPipeline(**components).to(torch_device)
pipe_1.unet.set_default_attn_processor()
pipe_2 = StableDiffusionXLImg2ImgPipeline(**components).to(torch_device)
pipe_2.unet.set_default_attn_processor()
pipe_3 = StableDiffusionXLImg2ImgPipeline(**components).to(torch_device)
pipe_3.unet.set_default_attn_processor()
def assert_run_mixture(
num_steps,
split_1,
split_2,
scheduler_cls_orig,
num_train_timesteps=pipe_1.scheduler.config.num_train_timesteps,
):
inputs = self.get_dummy_inputs(torch_device)
inputs["num_inference_steps"] = num_steps
class scheduler_cls(scheduler_cls_orig):
pass
pipe_1.scheduler = scheduler_cls.from_config(pipe_1.scheduler.config)
pipe_2.scheduler = scheduler_cls.from_config(pipe_2.scheduler.config)
pipe_3.scheduler = scheduler_cls.from_config(pipe_3.scheduler.config)
# Let's retrieve the number of timesteps we want to use
pipe_1.scheduler.set_timesteps(num_steps)
expected_steps = pipe_1.scheduler.timesteps.tolist()
split_1_ts = num_train_timesteps - int(round(num_train_timesteps * split_1))
split_2_ts = num_train_timesteps - int(round(num_train_timesteps * split_2))
if pipe_1.scheduler.order == 2:
expected_steps_1 = list(filter(lambda ts: ts >= split_1_ts, expected_steps))
expected_steps_2 = expected_steps_1[-1:] + list(
filter(lambda ts: ts >= split_2_ts and ts < split_1_ts, expected_steps)
)
expected_steps_3 = expected_steps_2[-1:] + list(filter(lambda ts: ts < split_2_ts, expected_steps))
expected_steps = expected_steps_1 + expected_steps_2 + expected_steps_3
else:
expected_steps_1 = list(filter(lambda ts: ts >= split_1_ts, expected_steps))
expected_steps_2 = list(filter(lambda ts: ts >= split_2_ts and ts < split_1_ts, expected_steps))
expected_steps_3 = list(filter(lambda ts: ts < split_2_ts, expected_steps))
# now we monkey patch step `done_steps`
# list into the step function for testing
done_steps = []
old_step = copy.copy(scheduler_cls.step)
def new_step(self, *args, **kwargs):
done_steps.append(args[1].cpu().item()) # args[1] is always the passed `t`
return old_step(self, *args, **kwargs)
scheduler_cls.step = new_step
inputs_1 = {**inputs, **{"denoising_end": split_1, "output_type": "latent"}}
latents = pipe_1(**inputs_1).images[0]
assert (
expected_steps_1 == done_steps
), f"Failure with {scheduler_cls.__name__} and {num_steps} and {split_1} and {split_2}"
with self.assertRaises(ValueError) as cm:
inputs_2 = {
**inputs,
**{
"denoising_start": split_2,
"denoising_end": split_1,
"image": latents,
"output_type": "latent",
},
}
pipe_2(**inputs_2).images[0]
assert "cannot be larger than or equal to `denoising_end`" in str(cm.exception)
inputs_2 = {
**inputs,
**{"denoising_start": split_1, "denoising_end": split_2, "image": latents, "output_type": "latent"},
}
pipe_2(**inputs_2).images[0]
assert expected_steps_2 == done_steps[len(expected_steps_1) :]
inputs_3 = {**inputs, **{"denoising_start": split_2, "image": latents}}
pipe_3(**inputs_3).images[0]
assert expected_steps_3 == done_steps[len(expected_steps_1) + len(expected_steps_2) :]
assert (
expected_steps == done_steps
), f"Failure with {scheduler_cls.__name__} and {num_steps} and {split_1} and {split_2}"
for steps in [7, 11, 20]:
for split_1, split_2 in zip([0.19, 0.32], [0.81, 0.68]):
for scheduler_cls in [
DDIMScheduler,
EulerDiscreteScheduler,
DPMSolverMultistepScheduler,
UniPCMultistepScheduler,
HeunDiscreteScheduler,
]:
assert_run_mixture(steps, split_1, split_2, scheduler_cls)
def test_stable_diffusion_xl_multi_prompts(self):
components = self.get_dummy_components()
sd_pipe = self.pipeline_class(**components).to(torch_device)
# forward with single prompt
inputs = self.get_dummy_inputs(torch_device)
output = sd_pipe(**inputs)
image_slice_1 = output.images[0, -3:, -3:, -1]
# forward with same prompt duplicated
inputs = self.get_dummy_inputs(torch_device)
inputs["prompt_2"] = inputs["prompt"]
output = sd_pipe(**inputs)
image_slice_2 = output.images[0, -3:, -3:, -1]
# ensure the results are equal
assert np.abs(image_slice_1.flatten() - image_slice_2.flatten()).max() < 1e-4
# forward with different prompt
inputs = self.get_dummy_inputs(torch_device)
inputs["prompt_2"] = "different prompt"
output = sd_pipe(**inputs)
image_slice_3 = output.images[0, -3:, -3:, -1]
# ensure the results are not equal
assert np.abs(image_slice_1.flatten() - image_slice_3.flatten()).max() > 1e-4
# manually set a negative_prompt
inputs = self.get_dummy_inputs(torch_device)
inputs["negative_prompt"] = "negative prompt"
output = sd_pipe(**inputs)
image_slice_1 = output.images[0, -3:, -3:, -1]
# forward with same negative_prompt duplicated
inputs = self.get_dummy_inputs(torch_device)
inputs["negative_prompt"] = "negative prompt"
inputs["negative_prompt_2"] = inputs["negative_prompt"]
output = sd_pipe(**inputs)
image_slice_2 = output.images[0, -3:, -3:, -1]
# ensure the results are equal
assert np.abs(image_slice_1.flatten() - image_slice_2.flatten()).max() < 1e-4
# forward with different negative_prompt
inputs = self.get_dummy_inputs(torch_device)
inputs["negative_prompt"] = "negative prompt"
inputs["negative_prompt_2"] = "different negative prompt"
output = sd_pipe(**inputs)
image_slice_3 = output.images[0, -3:, -3:, -1]
# ensure the results are not equal
assert np.abs(image_slice_1.flatten() - image_slice_3.flatten()).max() > 1e-4
def test_stable_diffusion_xl_negative_conditions(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = sd_pipe(**inputs).images
image_slice_with_no_neg_cond = image[0, -3:, -3:, -1]
image = sd_pipe(
**inputs,
negative_original_size=(512, 512),
negative_crops_coords_top_left=(0, 0),
negative_target_size=(1024, 1024),
).images
image_slice_with_neg_cond = image[0, -3:, -3:, -1]
self.assertTrue(np.abs(image_slice_with_no_neg_cond - image_slice_with_neg_cond).max() > 1e-2)
def test_stable_diffusion_xl_save_from_pretrained(self):
pipes = []
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components).to(torch_device)
pipes.append(sd_pipe)
with tempfile.TemporaryDirectory() as tmpdirname:
sd_pipe.save_pretrained(tmpdirname)
sd_pipe = StableDiffusionXLPipeline.from_pretrained(tmpdirname).to(torch_device)
pipes.append(sd_pipe)
image_slices = []
for pipe in pipes:
pipe.unet.set_default_attn_processor()
inputs = self.get_dummy_inputs(torch_device)
image = pipe(**inputs).images
image_slices.append(image[0, -3:, -3:, -1].flatten())
assert np.abs(image_slices[0] - image_slices[1]).max() < 1e-3
def test_pipeline_interrupt(self):
components = self.get_dummy_components()
sd_pipe = StableDiffusionXLPipeline(**components)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
prompt = "hey"
num_inference_steps = 3
# store intermediate latents from the generation process
class PipelineState:
def __init__(self):
self.state = []
def apply(self, pipe, i, t, callback_kwargs):
self.state.append(callback_kwargs["latents"])
return callback_kwargs
pipe_state = PipelineState()
sd_pipe(
prompt,
num_inference_steps=num_inference_steps,
output_type="np",
generator=torch.Generator("cpu").manual_seed(0),
callback_on_step_end=pipe_state.apply,
).images
# interrupt generation at step index
interrupt_step_idx = 1
def callback_on_step_end(pipe, i, t, callback_kwargs):
if i == interrupt_step_idx:
pipe._interrupt = True
return callback_kwargs
output_interrupted = sd_pipe(
prompt,
num_inference_steps=num_inference_steps,
output_type="latent",
generator=torch.Generator("cpu").manual_seed(0),
callback_on_step_end=callback_on_step_end,
).images
# fetch intermediate latents at the interrupted step
# from the completed generation process
intermediate_latent = pipe_state.state[interrupt_step_idx]
# compare the intermediate latent to the output of the interrupted process
# they should be the same
assert torch.allclose(intermediate_latent, output_interrupted, atol=1e-4)
@slow
class StableDiffusionXLPipelineIntegrationTests(unittest.TestCase):
def setUp(self):
super().setUp()
gc.collect()
torch.cuda.empty_cache()
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_stable_diffusion_lcm(self):
torch.manual_seed(0)
unet = UNet2DConditionModel.from_pretrained(
"latent-consistency/lcm-ssd-1b", torch_dtype=torch.float16, variant="fp16"
)
sd_pipe = StableDiffusionXLPipeline.from_pretrained(
"segmind/SSD-1B", unet=unet, torch_dtype=torch.float16, variant="fp16"
).to(torch_device)
sd_pipe.scheduler = LCMScheduler.from_config(sd_pipe.scheduler.config)
sd_pipe.set_progress_bar_config(disable=None)
prompt = "a red car standing on the side of the street"
image = sd_pipe(
prompt, num_inference_steps=4, guidance_scale=8.0, generator=torch.Generator("cpu").manual_seed(0)
).images[0]
expected_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/lcm_full/stable_diffusion_ssd_1b_lcm.png"
)
image = sd_pipe.image_processor.pil_to_numpy(image)
expected_image = sd_pipe.image_processor.pil_to_numpy(expected_image)
max_diff = numpy_cosine_similarity_distance(image.flatten(), expected_image.flatten())
assert max_diff < 1e-2
|
diffusers/tests/pipelines/stable_diffusion_xl/test_stable_diffusion_xl.py/0
|
{
"file_path": "diffusers/tests/pipelines/stable_diffusion_xl/test_stable_diffusion_xl.py",
"repo_id": "diffusers",
"token_count": 22322
}
| 150
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import tempfile
import unittest
import numpy as np
from diffusers.utils import is_flax_available
from diffusers.utils.testing_utils import require_flax, slow
if is_flax_available():
import jax
import jax.numpy as jnp
from flax.jax_utils import replicate
from flax.training.common_utils import shard
from diffusers import FlaxDDIMScheduler, FlaxDiffusionPipeline, FlaxStableDiffusionPipeline
@require_flax
class DownloadTests(unittest.TestCase):
def test_download_only_pytorch(self):
with tempfile.TemporaryDirectory() as tmpdirname:
# pipeline has Flax weights
_ = FlaxDiffusionPipeline.from_pretrained(
"hf-internal-testing/tiny-stable-diffusion-pipe", safety_checker=None, cache_dir=tmpdirname
)
all_root_files = [t[-1] for t in os.walk(os.path.join(tmpdirname, os.listdir(tmpdirname)[0], "snapshots"))]
files = [item for sublist in all_root_files for item in sublist]
# None of the downloaded files should be a PyTorch file even if we have some here:
# https://huggingface.co/hf-internal-testing/tiny-stable-diffusion-pipe/blob/main/unet/diffusion_pytorch_model.bin
assert not any(f.endswith(".bin") for f in files)
@slow
@require_flax
class FlaxPipelineTests(unittest.TestCase):
def test_dummy_all_tpus(self):
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"hf-internal-testing/tiny-stable-diffusion-pipe", safety_checker=None
)
prompt = (
"A cinematic film still of Morgan Freeman starring as Jimi Hendrix, portrait, 40mm lens, shallow depth of"
" field, close up, split lighting, cinematic"
)
prng_seed = jax.random.PRNGKey(0)
num_inference_steps = 4
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prompt_ids = pipeline.prepare_inputs(prompt)
# shard inputs and rng
params = replicate(params)
prng_seed = jax.random.split(prng_seed, num_samples)
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, num_inference_steps, jit=True).images
assert images.shape == (num_samples, 1, 64, 64, 3)
if jax.device_count() == 8:
assert np.abs(np.abs(images[0, 0, :2, :2, -2:], dtype=np.float32).sum() - 4.1514745) < 1e-3
assert np.abs(np.abs(images, dtype=np.float32).sum() - 49947.875) < 5e-1
images_pil = pipeline.numpy_to_pil(np.asarray(images.reshape((num_samples,) + images.shape[-3:])))
assert len(images_pil) == num_samples
def test_stable_diffusion_v1_4(self):
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4", revision="flax", safety_checker=None
)
prompt = (
"A cinematic film still of Morgan Freeman starring as Jimi Hendrix, portrait, 40mm lens, shallow depth of"
" field, close up, split lighting, cinematic"
)
prng_seed = jax.random.PRNGKey(0)
num_inference_steps = 50
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prompt_ids = pipeline.prepare_inputs(prompt)
# shard inputs and rng
params = replicate(params)
prng_seed = jax.random.split(prng_seed, num_samples)
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, num_inference_steps, jit=True).images
assert images.shape == (num_samples, 1, 512, 512, 3)
if jax.device_count() == 8:
assert np.abs((np.abs(images[0, 0, :2, :2, -2:], dtype=np.float32).sum() - 0.05652401)) < 1e-2
assert np.abs((np.abs(images, dtype=np.float32).sum() - 2383808.2)) < 5e-1
def test_stable_diffusion_v1_4_bfloat_16(self):
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4", variant="bf16", dtype=jnp.bfloat16, safety_checker=None
)
prompt = (
"A cinematic film still of Morgan Freeman starring as Jimi Hendrix, portrait, 40mm lens, shallow depth of"
" field, close up, split lighting, cinematic"
)
prng_seed = jax.random.PRNGKey(0)
num_inference_steps = 50
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prompt_ids = pipeline.prepare_inputs(prompt)
# shard inputs and rng
params = replicate(params)
prng_seed = jax.random.split(prng_seed, num_samples)
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, num_inference_steps, jit=True).images
assert images.shape == (num_samples, 1, 512, 512, 3)
if jax.device_count() == 8:
assert np.abs((np.abs(images[0, 0, :2, :2, -2:], dtype=np.float32).sum() - 0.04003906)) < 5e-2
assert np.abs((np.abs(images, dtype=np.float32).sum() - 2373516.75)) < 5e-1
def test_stable_diffusion_v1_4_bfloat_16_with_safety(self):
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4", variant="bf16", dtype=jnp.bfloat16
)
prompt = (
"A cinematic film still of Morgan Freeman starring as Jimi Hendrix, portrait, 40mm lens, shallow depth of"
" field, close up, split lighting, cinematic"
)
prng_seed = jax.random.PRNGKey(0)
num_inference_steps = 50
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prompt_ids = pipeline.prepare_inputs(prompt)
# shard inputs and rng
params = replicate(params)
prng_seed = jax.random.split(prng_seed, num_samples)
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, num_inference_steps, jit=True).images
assert images.shape == (num_samples, 1, 512, 512, 3)
if jax.device_count() == 8:
assert np.abs((np.abs(images[0, 0, :2, :2, -2:], dtype=np.float32).sum() - 0.04003906)) < 5e-2
assert np.abs((np.abs(images, dtype=np.float32).sum() - 2373516.75)) < 5e-1
def test_stable_diffusion_v1_4_bfloat_16_ddim(self):
scheduler = FlaxDDIMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
set_alpha_to_one=False,
steps_offset=1,
)
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4",
variant="bf16",
dtype=jnp.bfloat16,
scheduler=scheduler,
safety_checker=None,
)
scheduler_state = scheduler.create_state()
params["scheduler"] = scheduler_state
prompt = (
"A cinematic film still of Morgan Freeman starring as Jimi Hendrix, portrait, 40mm lens, shallow depth of"
" field, close up, split lighting, cinematic"
)
prng_seed = jax.random.PRNGKey(0)
num_inference_steps = 50
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prompt_ids = pipeline.prepare_inputs(prompt)
# shard inputs and rng
params = replicate(params)
prng_seed = jax.random.split(prng_seed, num_samples)
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, num_inference_steps, jit=True).images
assert images.shape == (num_samples, 1, 512, 512, 3)
if jax.device_count() == 8:
assert np.abs((np.abs(images[0, 0, :2, :2, -2:], dtype=np.float32).sum() - 0.045043945)) < 5e-2
assert np.abs((np.abs(images, dtype=np.float32).sum() - 2347693.5)) < 5e-1
def test_jax_memory_efficient_attention(self):
prompt = (
"A cinematic film still of Morgan Freeman starring as Jimi Hendrix, portrait, 40mm lens, shallow depth of"
" field, close up, split lighting, cinematic"
)
num_samples = jax.device_count()
prompt = num_samples * [prompt]
prng_seed = jax.random.split(jax.random.PRNGKey(0), num_samples)
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4",
variant="bf16",
dtype=jnp.bfloat16,
safety_checker=None,
)
params = replicate(params)
prompt_ids = pipeline.prepare_inputs(prompt)
prompt_ids = shard(prompt_ids)
images = pipeline(prompt_ids, params, prng_seed, jit=True).images
assert images.shape == (num_samples, 1, 512, 512, 3)
slice = images[2, 0, 256, 10:17, 1]
# With memory efficient attention
pipeline, params = FlaxStableDiffusionPipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4",
variant="bf16",
dtype=jnp.bfloat16,
safety_checker=None,
use_memory_efficient_attention=True,
)
params = replicate(params)
prompt_ids = pipeline.prepare_inputs(prompt)
prompt_ids = shard(prompt_ids)
images_eff = pipeline(prompt_ids, params, prng_seed, jit=True).images
assert images_eff.shape == (num_samples, 1, 512, 512, 3)
slice_eff = images[2, 0, 256, 10:17, 1]
# I checked the results visually and they are very similar. However, I saw that the max diff is `1` and the `sum`
# over the 8 images is exactly `256`, which is very suspicious. Testing a random slice for now.
assert abs(slice_eff - slice).max() < 1e-2
|
diffusers/tests/pipelines/test_pipelines_flax.py/0
|
{
"file_path": "diffusers/tests/pipelines/test_pipelines_flax.py",
"repo_id": "diffusers",
"token_count": 4559
}
| 151
|
# coding=utf-8
# Copyright 2024 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import inspect
import tempfile
import unittest
from typing import Dict, List, Tuple
from diffusers import FlaxDDIMScheduler, FlaxDDPMScheduler, FlaxPNDMScheduler
from diffusers.utils import is_flax_available
from diffusers.utils.testing_utils import require_flax
if is_flax_available():
import jax
import jax.numpy as jnp
from jax import random
jax_device = jax.default_backend()
@require_flax
class FlaxSchedulerCommonTest(unittest.TestCase):
scheduler_classes = ()
forward_default_kwargs = ()
@property
def dummy_sample(self):
batch_size = 4
num_channels = 3
height = 8
width = 8
key1, key2 = random.split(random.PRNGKey(0))
sample = random.uniform(key1, (batch_size, num_channels, height, width))
return sample, key2
@property
def dummy_sample_deter(self):
batch_size = 4
num_channels = 3
height = 8
width = 8
num_elems = batch_size * num_channels * height * width
sample = jnp.arange(num_elems)
sample = sample.reshape(num_channels, height, width, batch_size)
sample = sample / num_elems
return jnp.transpose(sample, (3, 0, 1, 2))
def get_scheduler_config(self):
raise NotImplementedError
def dummy_model(self):
def model(sample, t, *args):
return sample * t / (t + 1)
return model
def check_over_configs(self, time_step=0, **config):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
sample, key = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config(**config)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output = scheduler.step(state, residual, time_step, sample, key, **kwargs).prev_sample
new_output = new_scheduler.step(new_state, residual, time_step, sample, key, **kwargs).prev_sample
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def check_over_forward(self, time_step=0, **forward_kwargs):
kwargs = dict(self.forward_default_kwargs)
kwargs.update(forward_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
sample, key = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output = scheduler.step(state, residual, time_step, sample, key, **kwargs).prev_sample
new_output = new_scheduler.step(new_state, residual, time_step, sample, key, **kwargs).prev_sample
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def test_from_save_pretrained(self):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
sample, key = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output = scheduler.step(state, residual, 1, sample, key, **kwargs).prev_sample
new_output = new_scheduler.step(new_state, residual, 1, sample, key, **kwargs).prev_sample
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def test_step_shape(self):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
sample, key = self.dummy_sample
residual = 0.1 * sample
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output_0 = scheduler.step(state, residual, 0, sample, key, **kwargs).prev_sample
output_1 = scheduler.step(state, residual, 1, sample, key, **kwargs).prev_sample
self.assertEqual(output_0.shape, sample.shape)
self.assertEqual(output_0.shape, output_1.shape)
def test_scheduler_outputs_equivalence(self):
def set_nan_tensor_to_zero(t):
return t.at[t != t].set(0)
def recursive_check(tuple_object, dict_object):
if isinstance(tuple_object, (List, Tuple)):
for tuple_iterable_value, dict_iterable_value in zip(tuple_object, dict_object.values()):
recursive_check(tuple_iterable_value, dict_iterable_value)
elif isinstance(tuple_object, Dict):
for tuple_iterable_value, dict_iterable_value in zip(tuple_object.values(), dict_object.values()):
recursive_check(tuple_iterable_value, dict_iterable_value)
elif tuple_object is None:
return
else:
self.assertTrue(
jnp.allclose(set_nan_tensor_to_zero(tuple_object), set_nan_tensor_to_zero(dict_object), atol=1e-5),
msg=(
"Tuple and dict output are not equal. Difference:"
f" {jnp.max(jnp.abs(tuple_object - dict_object))}. Tuple has `nan`:"
f" {jnp.isnan(tuple_object).any()} and `inf`: {jnp.isinf(tuple_object)}. Dict has"
f" `nan`: {jnp.isnan(dict_object).any()} and `inf`: {jnp.isinf(dict_object)}."
),
)
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
sample, key = self.dummy_sample
residual = 0.1 * sample
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
outputs_dict = scheduler.step(state, residual, 0, sample, key, **kwargs)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
outputs_tuple = scheduler.step(state, residual, 0, sample, key, return_dict=False, **kwargs)
recursive_check(outputs_tuple[0], outputs_dict.prev_sample)
def test_deprecated_kwargs(self):
for scheduler_class in self.scheduler_classes:
has_kwarg_in_model_class = "kwargs" in inspect.signature(scheduler_class.__init__).parameters
has_deprecated_kwarg = len(scheduler_class._deprecated_kwargs) > 0
if has_kwarg_in_model_class and not has_deprecated_kwarg:
raise ValueError(
f"{scheduler_class} has `**kwargs` in its __init__ method but has not defined any deprecated"
" kwargs under the `_deprecated_kwargs` class attribute. Make sure to either remove `**kwargs` if"
" there are no deprecated arguments or add the deprecated argument with `_deprecated_kwargs ="
" [<deprecated_argument>]`"
)
if not has_kwarg_in_model_class and has_deprecated_kwarg:
raise ValueError(
f"{scheduler_class} doesn't have `**kwargs` in its __init__ method but has defined deprecated"
" kwargs under the `_deprecated_kwargs` class attribute. Make sure to either add the `**kwargs`"
f" argument to {self.model_class}.__init__ if there are deprecated arguments or remove the"
" deprecated argument from `_deprecated_kwargs = [<deprecated_argument>]`"
)
@require_flax
class FlaxDDPMSchedulerTest(FlaxSchedulerCommonTest):
scheduler_classes = (FlaxDDPMScheduler,)
def get_scheduler_config(self, **kwargs):
config = {
"num_train_timesteps": 1000,
"beta_start": 0.0001,
"beta_end": 0.02,
"beta_schedule": "linear",
"variance_type": "fixed_small",
"clip_sample": True,
}
config.update(**kwargs)
return config
def test_timesteps(self):
for timesteps in [1, 5, 100, 1000]:
self.check_over_configs(num_train_timesteps=timesteps)
def test_betas(self):
for beta_start, beta_end in zip([0.0001, 0.001, 0.01, 0.1], [0.002, 0.02, 0.2, 2]):
self.check_over_configs(beta_start=beta_start, beta_end=beta_end)
def test_schedules(self):
for schedule in ["linear", "squaredcos_cap_v2"]:
self.check_over_configs(beta_schedule=schedule)
def test_variance_type(self):
for variance in ["fixed_small", "fixed_large", "other"]:
self.check_over_configs(variance_type=variance)
def test_clip_sample(self):
for clip_sample in [True, False]:
self.check_over_configs(clip_sample=clip_sample)
def test_time_indices(self):
for t in [0, 500, 999]:
self.check_over_forward(time_step=t)
def test_variance(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 0) - 0.0)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 487) - 0.00979)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 999) - 0.02)) < 1e-5
def test_full_loop_no_noise(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
num_trained_timesteps = len(scheduler)
model = self.dummy_model()
sample = self.dummy_sample_deter
key1, key2 = random.split(random.PRNGKey(0))
for t in reversed(range(num_trained_timesteps)):
# 1. predict noise residual
residual = model(sample, t)
# 2. predict previous mean of sample x_t-1
output = scheduler.step(state, residual, t, sample, key1)
pred_prev_sample = output.prev_sample
state = output.state
key1, key2 = random.split(key2)
# if t > 0:
# noise = self.dummy_sample_deter
# variance = scheduler.get_variance(t) ** (0.5) * noise
#
# sample = pred_prev_sample + variance
sample = pred_prev_sample
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
if jax_device == "tpu":
assert abs(result_sum - 255.0714) < 1e-2
assert abs(result_mean - 0.332124) < 1e-3
else:
assert abs(result_sum - 255.1113) < 1e-1
assert abs(result_mean - 0.332176) < 1e-3
@require_flax
class FlaxDDIMSchedulerTest(FlaxSchedulerCommonTest):
scheduler_classes = (FlaxDDIMScheduler,)
forward_default_kwargs = (("num_inference_steps", 50),)
def get_scheduler_config(self, **kwargs):
config = {
"num_train_timesteps": 1000,
"beta_start": 0.0001,
"beta_end": 0.02,
"beta_schedule": "linear",
}
config.update(**kwargs)
return config
def full_loop(self, **config):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(**config)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
key1, key2 = random.split(random.PRNGKey(0))
num_inference_steps = 10
model = self.dummy_model()
sample = self.dummy_sample_deter
state = scheduler.set_timesteps(state, num_inference_steps)
for t in state.timesteps:
residual = model(sample, t)
output = scheduler.step(state, residual, t, sample)
sample = output.prev_sample
state = output.state
key1, key2 = random.split(key2)
return sample
def check_over_configs(self, time_step=0, **config):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
sample, _ = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config(**config)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output = scheduler.step(state, residual, time_step, sample, **kwargs).prev_sample
new_output = new_scheduler.step(new_state, residual, time_step, sample, **kwargs).prev_sample
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def test_from_save_pretrained(self):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
sample, _ = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output = scheduler.step(state, residual, 1, sample, **kwargs).prev_sample
new_output = new_scheduler.step(new_state, residual, 1, sample, **kwargs).prev_sample
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def check_over_forward(self, time_step=0, **forward_kwargs):
kwargs = dict(self.forward_default_kwargs)
kwargs.update(forward_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
sample, _ = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output = scheduler.step(state, residual, time_step, sample, **kwargs).prev_sample
new_output = new_scheduler.step(new_state, residual, time_step, sample, **kwargs).prev_sample
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def test_scheduler_outputs_equivalence(self):
def set_nan_tensor_to_zero(t):
return t.at[t != t].set(0)
def recursive_check(tuple_object, dict_object):
if isinstance(tuple_object, (List, Tuple)):
for tuple_iterable_value, dict_iterable_value in zip(tuple_object, dict_object.values()):
recursive_check(tuple_iterable_value, dict_iterable_value)
elif isinstance(tuple_object, Dict):
for tuple_iterable_value, dict_iterable_value in zip(tuple_object.values(), dict_object.values()):
recursive_check(tuple_iterable_value, dict_iterable_value)
elif tuple_object is None:
return
else:
self.assertTrue(
jnp.allclose(set_nan_tensor_to_zero(tuple_object), set_nan_tensor_to_zero(dict_object), atol=1e-5),
msg=(
"Tuple and dict output are not equal. Difference:"
f" {jnp.max(jnp.abs(tuple_object - dict_object))}. Tuple has `nan`:"
f" {jnp.isnan(tuple_object).any()} and `inf`: {jnp.isinf(tuple_object)}. Dict has"
f" `nan`: {jnp.isnan(dict_object).any()} and `inf`: {jnp.isinf(dict_object)}."
),
)
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
sample, _ = self.dummy_sample
residual = 0.1 * sample
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
outputs_dict = scheduler.step(state, residual, 0, sample, **kwargs)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
outputs_tuple = scheduler.step(state, residual, 0, sample, return_dict=False, **kwargs)
recursive_check(outputs_tuple[0], outputs_dict.prev_sample)
def test_step_shape(self):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
sample, _ = self.dummy_sample
residual = 0.1 * sample
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
output_0 = scheduler.step(state, residual, 0, sample, **kwargs).prev_sample
output_1 = scheduler.step(state, residual, 1, sample, **kwargs).prev_sample
self.assertEqual(output_0.shape, sample.shape)
self.assertEqual(output_0.shape, output_1.shape)
def test_timesteps(self):
for timesteps in [100, 500, 1000]:
self.check_over_configs(num_train_timesteps=timesteps)
def test_steps_offset(self):
for steps_offset in [0, 1]:
self.check_over_configs(steps_offset=steps_offset)
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(steps_offset=1)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
state = scheduler.set_timesteps(state, 5)
assert jnp.equal(state.timesteps, jnp.array([801, 601, 401, 201, 1])).all()
def test_betas(self):
for beta_start, beta_end in zip([0.0001, 0.001, 0.01, 0.1], [0.002, 0.02, 0.2, 2]):
self.check_over_configs(beta_start=beta_start, beta_end=beta_end)
def test_schedules(self):
for schedule in ["linear", "squaredcos_cap_v2"]:
self.check_over_configs(beta_schedule=schedule)
def test_time_indices(self):
for t in [1, 10, 49]:
self.check_over_forward(time_step=t)
def test_inference_steps(self):
for t, num_inference_steps in zip([1, 10, 50], [10, 50, 500]):
self.check_over_forward(time_step=t, num_inference_steps=num_inference_steps)
def test_variance(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 0, 0) - 0.0)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 420, 400) - 0.14771)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 980, 960) - 0.32460)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 0, 0) - 0.0)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 487, 486) - 0.00979)) < 1e-5
assert jnp.sum(jnp.abs(scheduler._get_variance(state, 999, 998) - 0.02)) < 1e-5
def test_full_loop_no_noise(self):
sample = self.full_loop()
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
assert abs(result_sum - 172.0067) < 1e-2
assert abs(result_mean - 0.223967) < 1e-3
def test_full_loop_with_set_alpha_to_one(self):
# We specify different beta, so that the first alpha is 0.99
sample = self.full_loop(set_alpha_to_one=True, beta_start=0.01)
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
if jax_device == "tpu":
assert abs(result_sum - 149.8409) < 1e-2
assert abs(result_mean - 0.1951) < 1e-3
else:
assert abs(result_sum - 149.8295) < 1e-2
assert abs(result_mean - 0.1951) < 1e-3
def test_full_loop_with_no_set_alpha_to_one(self):
# We specify different beta, so that the first alpha is 0.99
sample = self.full_loop(set_alpha_to_one=False, beta_start=0.01)
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
if jax_device == "tpu":
pass
# FIXME: both result_sum and result_mean are nan on TPU
# assert jnp.isnan(result_sum)
# assert jnp.isnan(result_mean)
else:
assert abs(result_sum - 149.0784) < 1e-2
assert abs(result_mean - 0.1941) < 1e-3
def test_prediction_type(self):
for prediction_type in ["epsilon", "sample", "v_prediction"]:
self.check_over_configs(prediction_type=prediction_type)
@require_flax
class FlaxPNDMSchedulerTest(FlaxSchedulerCommonTest):
scheduler_classes = (FlaxPNDMScheduler,)
forward_default_kwargs = (("num_inference_steps", 50),)
def get_scheduler_config(self, **kwargs):
config = {
"num_train_timesteps": 1000,
"beta_start": 0.0001,
"beta_end": 0.02,
"beta_schedule": "linear",
}
config.update(**kwargs)
return config
def check_over_configs(self, time_step=0, **config):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
sample, _ = self.dummy_sample
residual = 0.1 * sample
dummy_past_residuals = jnp.array([residual + 0.2, residual + 0.15, residual + 0.1, residual + 0.05])
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config(**config)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
# copy over dummy past residuals
state = state.replace(ets=dummy_past_residuals[:])
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps, shape=sample.shape)
# copy over dummy past residuals
new_state = new_state.replace(ets=dummy_past_residuals[:])
(prev_sample, state) = scheduler.step_prk(state, residual, time_step, sample, **kwargs)
(new_prev_sample, new_state) = new_scheduler.step_prk(new_state, residual, time_step, sample, **kwargs)
assert jnp.sum(jnp.abs(prev_sample - new_prev_sample)) < 1e-5, "Scheduler outputs are not identical"
output, _ = scheduler.step_plms(state, residual, time_step, sample, **kwargs)
new_output, _ = new_scheduler.step_plms(new_state, residual, time_step, sample, **kwargs)
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def test_from_save_pretrained(self):
pass
def test_scheduler_outputs_equivalence(self):
def set_nan_tensor_to_zero(t):
return t.at[t != t].set(0)
def recursive_check(tuple_object, dict_object):
if isinstance(tuple_object, (List, Tuple)):
for tuple_iterable_value, dict_iterable_value in zip(tuple_object, dict_object.values()):
recursive_check(tuple_iterable_value, dict_iterable_value)
elif isinstance(tuple_object, Dict):
for tuple_iterable_value, dict_iterable_value in zip(tuple_object.values(), dict_object.values()):
recursive_check(tuple_iterable_value, dict_iterable_value)
elif tuple_object is None:
return
else:
self.assertTrue(
jnp.allclose(set_nan_tensor_to_zero(tuple_object), set_nan_tensor_to_zero(dict_object), atol=1e-5),
msg=(
"Tuple and dict output are not equal. Difference:"
f" {jnp.max(jnp.abs(tuple_object - dict_object))}. Tuple has `nan`:"
f" {jnp.isnan(tuple_object).any()} and `inf`: {jnp.isinf(tuple_object)}. Dict has"
f" `nan`: {jnp.isnan(dict_object).any()} and `inf`: {jnp.isinf(dict_object)}."
),
)
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
sample, _ = self.dummy_sample
residual = 0.1 * sample
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
outputs_dict = scheduler.step(state, residual, 0, sample, **kwargs)
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
outputs_tuple = scheduler.step(state, residual, 0, sample, return_dict=False, **kwargs)
recursive_check(outputs_tuple[0], outputs_dict.prev_sample)
def check_over_forward(self, time_step=0, **forward_kwargs):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
sample, _ = self.dummy_sample
residual = 0.1 * sample
dummy_past_residuals = jnp.array([residual + 0.2, residual + 0.15, residual + 0.1, residual + 0.05])
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
# copy over dummy past residuals (must be after setting timesteps)
scheduler.ets = dummy_past_residuals[:]
with tempfile.TemporaryDirectory() as tmpdirname:
scheduler.save_config(tmpdirname)
new_scheduler, new_state = scheduler_class.from_pretrained(tmpdirname)
# copy over dummy past residuals
new_state = new_scheduler.set_timesteps(new_state, num_inference_steps, shape=sample.shape)
# copy over dummy past residual (must be after setting timesteps)
new_state.replace(ets=dummy_past_residuals[:])
output, state = scheduler.step_prk(state, residual, time_step, sample, **kwargs)
new_output, new_state = new_scheduler.step_prk(new_state, residual, time_step, sample, **kwargs)
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
output, _ = scheduler.step_plms(state, residual, time_step, sample, **kwargs)
new_output, _ = new_scheduler.step_plms(new_state, residual, time_step, sample, **kwargs)
assert jnp.sum(jnp.abs(output - new_output)) < 1e-5, "Scheduler outputs are not identical"
def full_loop(self, **config):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(**config)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
num_inference_steps = 10
model = self.dummy_model()
sample = self.dummy_sample_deter
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
for i, t in enumerate(state.prk_timesteps):
residual = model(sample, t)
sample, state = scheduler.step_prk(state, residual, t, sample)
for i, t in enumerate(state.plms_timesteps):
residual = model(sample, t)
sample, state = scheduler.step_plms(state, residual, t, sample)
return sample
def test_step_shape(self):
kwargs = dict(self.forward_default_kwargs)
num_inference_steps = kwargs.pop("num_inference_steps", None)
for scheduler_class in self.scheduler_classes:
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
sample, _ = self.dummy_sample
residual = 0.1 * sample
if num_inference_steps is not None and hasattr(scheduler, "set_timesteps"):
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
elif num_inference_steps is not None and not hasattr(scheduler, "set_timesteps"):
kwargs["num_inference_steps"] = num_inference_steps
# copy over dummy past residuals (must be done after set_timesteps)
dummy_past_residuals = jnp.array([residual + 0.2, residual + 0.15, residual + 0.1, residual + 0.05])
state = state.replace(ets=dummy_past_residuals[:])
output_0, state = scheduler.step_prk(state, residual, 0, sample, **kwargs)
output_1, state = scheduler.step_prk(state, residual, 1, sample, **kwargs)
self.assertEqual(output_0.shape, sample.shape)
self.assertEqual(output_0.shape, output_1.shape)
output_0, state = scheduler.step_plms(state, residual, 0, sample, **kwargs)
output_1, state = scheduler.step_plms(state, residual, 1, sample, **kwargs)
self.assertEqual(output_0.shape, sample.shape)
self.assertEqual(output_0.shape, output_1.shape)
def test_timesteps(self):
for timesteps in [100, 1000]:
self.check_over_configs(num_train_timesteps=timesteps)
def test_steps_offset(self):
for steps_offset in [0, 1]:
self.check_over_configs(steps_offset=steps_offset)
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(steps_offset=1)
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
state = scheduler.set_timesteps(state, 10, shape=())
assert jnp.equal(
state.timesteps,
jnp.array([901, 851, 851, 801, 801, 751, 751, 701, 701, 651, 651, 601, 601, 501, 401, 301, 201, 101, 1]),
).all()
def test_betas(self):
for beta_start, beta_end in zip([0.0001, 0.001], [0.002, 0.02]):
self.check_over_configs(beta_start=beta_start, beta_end=beta_end)
def test_schedules(self):
for schedule in ["linear", "squaredcos_cap_v2"]:
self.check_over_configs(beta_schedule=schedule)
def test_time_indices(self):
for t in [1, 5, 10]:
self.check_over_forward(time_step=t)
def test_inference_steps(self):
for t, num_inference_steps in zip([1, 5, 10], [10, 50, 100]):
self.check_over_forward(num_inference_steps=num_inference_steps)
def test_pow_of_3_inference_steps(self):
# earlier version of set_timesteps() caused an error indexing alpha's with inference steps as power of 3
num_inference_steps = 27
for scheduler_class in self.scheduler_classes:
sample, _ = self.dummy_sample
residual = 0.1 * sample
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
state = scheduler.set_timesteps(state, num_inference_steps, shape=sample.shape)
# before power of 3 fix, would error on first step, so we only need to do two
for i, t in enumerate(state.prk_timesteps[:2]):
sample, state = scheduler.step_prk(state, residual, t, sample)
def test_inference_plms_no_past_residuals(self):
with self.assertRaises(ValueError):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
state = scheduler.create_state()
scheduler.step_plms(state, self.dummy_sample, 1, self.dummy_sample).prev_sample
def test_full_loop_no_noise(self):
sample = self.full_loop()
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
if jax_device == "tpu":
assert abs(result_sum - 198.1275) < 1e-2
assert abs(result_mean - 0.2580) < 1e-3
else:
assert abs(result_sum - 198.1318) < 1e-2
assert abs(result_mean - 0.2580) < 1e-3
def test_full_loop_with_set_alpha_to_one(self):
# We specify different beta, so that the first alpha is 0.99
sample = self.full_loop(set_alpha_to_one=True, beta_start=0.01)
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
if jax_device == "tpu":
assert abs(result_sum - 186.83226) < 1e-2
assert abs(result_mean - 0.24327) < 1e-3
else:
assert abs(result_sum - 186.9466) < 1e-2
assert abs(result_mean - 0.24342) < 1e-3
def test_full_loop_with_no_set_alpha_to_one(self):
# We specify different beta, so that the first alpha is 0.99
sample = self.full_loop(set_alpha_to_one=False, beta_start=0.01)
result_sum = jnp.sum(jnp.abs(sample))
result_mean = jnp.mean(jnp.abs(sample))
if jax_device == "tpu":
assert abs(result_sum - 186.83226) < 1e-2
assert abs(result_mean - 0.24327) < 1e-3
else:
assert abs(result_sum - 186.9482) < 1e-2
assert abs(result_mean - 0.2434) < 1e-3
|
diffusers/tests/schedulers/test_scheduler_flax.py/0
|
{
"file_path": "diffusers/tests/schedulers/test_scheduler_flax.py",
"repo_id": "diffusers",
"token_count": 18869
}
| 152
|
import tempfile
from io import BytesIO
import requests
import torch
from huggingface_hub import hf_hub_download, snapshot_download
from diffusers.models.attention_processor import AttnProcessor
from diffusers.utils.testing_utils import (
numpy_cosine_similarity_distance,
torch_device,
)
def download_single_file_checkpoint(repo_id, filename, tmpdir):
path = hf_hub_download(repo_id, filename=filename, local_dir=tmpdir)
return path
def download_original_config(config_url, tmpdir):
original_config_file = BytesIO(requests.get(config_url).content)
path = f"{tmpdir}/config.yaml"
with open(path, "wb") as f:
f.write(original_config_file.read())
return path
def download_diffusers_config(repo_id, tmpdir):
path = snapshot_download(
repo_id,
ignore_patterns=[
"**/*.ckpt",
"*.ckpt",
"**/*.bin",
"*.bin",
"**/*.pt",
"*.pt",
"**/*.safetensors",
"*.safetensors",
],
allow_patterns=["**/*.json", "*.json", "*.txt", "**/*.txt"],
local_dir=tmpdir,
)
return path
class SDSingleFileTesterMixin:
def _compare_component_configs(self, pipe, single_file_pipe):
for param_name, param_value in single_file_pipe.text_encoder.config.to_dict().items():
if param_name in ["torch_dtype", "architectures", "_name_or_path"]:
continue
assert pipe.text_encoder.config.to_dict()[param_name] == param_value
PARAMS_TO_IGNORE = [
"torch_dtype",
"_name_or_path",
"architectures",
"_use_default_values",
"_diffusers_version",
]
for component_name, component in single_file_pipe.components.items():
if component_name in single_file_pipe._optional_components:
continue
# skip testing transformer based components here
# skip text encoders / safety checkers since they have already been tested
if component_name in ["text_encoder", "tokenizer", "safety_checker", "feature_extractor"]:
continue
assert component_name in pipe.components, f"single file {component_name} not found in pretrained pipeline"
assert isinstance(
component, pipe.components[component_name].__class__
), f"single file {component.__class__.__name__} and pretrained {pipe.components[component_name].__class__.__name__} are not the same"
for param_name, param_value in component.config.items():
if param_name in PARAMS_TO_IGNORE:
continue
# Some pretrained configs will set upcast attention to None
# In single file loading it defaults to the value in the class __init__ which is False
if param_name == "upcast_attention" and pipe.components[component_name].config[param_name] is None:
pipe.components[component_name].config[param_name] = param_value
assert (
pipe.components[component_name].config[param_name] == param_value
), f"single file {param_name}: {param_value} differs from pretrained {pipe.components[component_name].config[param_name]}"
def test_single_file_components(self, pipe=None, single_file_pipe=None):
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path, safety_checker=None
)
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_components_local_files_only(self, pipe=None, single_file_pipe=None):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
with tempfile.TemporaryDirectory() as tmpdir:
ckpt_filename = self.ckpt_path.split("/")[-1]
local_ckpt_path = download_single_file_checkpoint(self.repo_id, ckpt_filename, tmpdir)
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
local_ckpt_path, safety_checker=None, local_files_only=True
)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_components_with_original_config(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
# Not possible to infer this value when original config is provided
# we just pass it in here otherwise this test will fail
upcast_attention = pipe.unet.config.upcast_attention
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path,
original_config=self.original_config,
safety_checker=None,
upcast_attention=upcast_attention,
)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_components_with_original_config_local_files_only(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
# Not possible to infer this value when original config is provided
# we just pass it in here otherwise this test will fail
upcast_attention = pipe.unet.config.upcast_attention
with tempfile.TemporaryDirectory() as tmpdir:
ckpt_filename = self.ckpt_path.split("/")[-1]
local_ckpt_path = download_single_file_checkpoint(self.repo_id, ckpt_filename, tmpdir)
local_original_config = download_original_config(self.original_config, tmpdir)
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
local_ckpt_path,
original_config=local_original_config,
safety_checker=None,
upcast_attention=upcast_attention,
local_files_only=True,
)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_format_inference_is_same_as_pretrained(self, expected_max_diff=1e-4):
sf_pipe = self.pipeline_class.from_single_file(self.ckpt_path, safety_checker=None)
sf_pipe.unet.set_attn_processor(AttnProcessor())
sf_pipe.enable_model_cpu_offload()
inputs = self.get_inputs(torch_device)
image_single_file = sf_pipe(**inputs).images[0]
pipe = self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
pipe.unet.set_attn_processor(AttnProcessor())
pipe.enable_model_cpu_offload()
inputs = self.get_inputs(torch_device)
image = pipe(**inputs).images[0]
max_diff = numpy_cosine_similarity_distance(image.flatten(), image_single_file.flatten())
assert max_diff < expected_max_diff
def test_single_file_components_with_diffusers_config(
self,
pipe=None,
single_file_pipe=None,
):
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path, config=self.repo_id, safety_checker=None
)
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_components_with_diffusers_config_local_files_only(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
with tempfile.TemporaryDirectory() as tmpdir:
ckpt_filename = self.ckpt_path.split("/")[-1]
local_ckpt_path = download_single_file_checkpoint(self.repo_id, ckpt_filename, tmpdir)
local_diffusers_config = download_diffusers_config(self.repo_id, tmpdir)
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
local_ckpt_path, config=local_diffusers_config, safety_checker=None, local_files_only=True
)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_setting_pipeline_dtype_to_fp16(
self,
single_file_pipe=None,
):
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path, torch_dtype=torch.float16
)
for component_name, component in single_file_pipe.components.items():
if not isinstance(component, torch.nn.Module):
continue
assert component.dtype == torch.float16
class SDXLSingleFileTesterMixin:
def _compare_component_configs(self, pipe, single_file_pipe):
# Skip testing the text_encoder for Refiner Pipelines
if pipe.text_encoder:
for param_name, param_value in single_file_pipe.text_encoder.config.to_dict().items():
if param_name in ["torch_dtype", "architectures", "_name_or_path"]:
continue
assert pipe.text_encoder.config.to_dict()[param_name] == param_value
for param_name, param_value in single_file_pipe.text_encoder_2.config.to_dict().items():
if param_name in ["torch_dtype", "architectures", "_name_or_path"]:
continue
assert pipe.text_encoder_2.config.to_dict()[param_name] == param_value
PARAMS_TO_IGNORE = [
"torch_dtype",
"_name_or_path",
"architectures",
"_use_default_values",
"_diffusers_version",
]
for component_name, component in single_file_pipe.components.items():
if component_name in single_file_pipe._optional_components:
continue
# skip text encoders since they have already been tested
if component_name in ["text_encoder", "text_encoder_2", "tokenizer", "tokenizer_2"]:
continue
# skip safety checker if it is not present in the pipeline
if component_name in ["safety_checker", "feature_extractor"]:
continue
assert component_name in pipe.components, f"single file {component_name} not found in pretrained pipeline"
assert isinstance(
component, pipe.components[component_name].__class__
), f"single file {component.__class__.__name__} and pretrained {pipe.components[component_name].__class__.__name__} are not the same"
for param_name, param_value in component.config.items():
if param_name in PARAMS_TO_IGNORE:
continue
# Some pretrained configs will set upcast attention to None
# In single file loading it defaults to the value in the class __init__ which is False
if param_name == "upcast_attention" and pipe.components[component_name].config[param_name] is None:
pipe.components[component_name].config[param_name] = param_value
assert (
pipe.components[component_name].config[param_name] == param_value
), f"single file {param_name}: {param_value} differs from pretrained {pipe.components[component_name].config[param_name]}"
def test_single_file_components(self, pipe=None, single_file_pipe=None):
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path, safety_checker=None
)
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
self._compare_component_configs(
pipe,
single_file_pipe,
)
def test_single_file_components_local_files_only(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
with tempfile.TemporaryDirectory() as tmpdir:
ckpt_filename = self.ckpt_path.split("/")[-1]
local_ckpt_path = download_single_file_checkpoint(self.repo_id, ckpt_filename, tmpdir)
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
local_ckpt_path, safety_checker=None, local_files_only=True
)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_components_with_original_config(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
# Not possible to infer this value when original config is provided
# we just pass it in here otherwise this test will fail
upcast_attention = pipe.unet.config.upcast_attention
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path,
original_config=self.original_config,
safety_checker=None,
upcast_attention=upcast_attention,
)
self._compare_component_configs(
pipe,
single_file_pipe,
)
def test_single_file_components_with_original_config_local_files_only(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
# Not possible to infer this value when original config is provided
# we just pass it in here otherwise this test will fail
upcast_attention = pipe.unet.config.upcast_attention
with tempfile.TemporaryDirectory() as tmpdir:
ckpt_filename = self.ckpt_path.split("/")[-1]
local_ckpt_path = download_single_file_checkpoint(self.repo_id, ckpt_filename, tmpdir)
local_original_config = download_original_config(self.original_config, tmpdir)
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
local_ckpt_path,
original_config=local_original_config,
upcast_attention=upcast_attention,
safety_checker=None,
local_files_only=True,
)
self._compare_component_configs(
pipe,
single_file_pipe,
)
def test_single_file_components_with_diffusers_config(
self,
pipe=None,
single_file_pipe=None,
):
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path, config=self.repo_id, safety_checker=None
)
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_components_with_diffusers_config_local_files_only(
self,
pipe=None,
single_file_pipe=None,
):
pipe = pipe or self.pipeline_class.from_pretrained(self.repo_id, safety_checker=None)
with tempfile.TemporaryDirectory() as tmpdir:
ckpt_filename = self.ckpt_path.split("/")[-1]
local_ckpt_path = download_single_file_checkpoint(self.repo_id, ckpt_filename, tmpdir)
local_diffusers_config = download_diffusers_config(self.repo_id, tmpdir)
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
local_ckpt_path, config=local_diffusers_config, safety_checker=None, local_files_only=True
)
self._compare_component_configs(pipe, single_file_pipe)
def test_single_file_format_inference_is_same_as_pretrained(self, expected_max_diff=1e-4):
sf_pipe = self.pipeline_class.from_single_file(self.ckpt_path, torch_dtype=torch.float16, safety_checker=None)
sf_pipe.unet.set_default_attn_processor()
sf_pipe.enable_model_cpu_offload()
inputs = self.get_inputs(torch_device)
image_single_file = sf_pipe(**inputs).images[0]
pipe = self.pipeline_class.from_pretrained(self.repo_id, torch_dtype=torch.float16, safety_checker=None)
pipe.unet.set_default_attn_processor()
pipe.enable_model_cpu_offload()
inputs = self.get_inputs(torch_device)
image = pipe(**inputs).images[0]
max_diff = numpy_cosine_similarity_distance(image.flatten(), image_single_file.flatten())
assert max_diff < expected_max_diff
def test_single_file_setting_pipeline_dtype_to_fp16(
self,
single_file_pipe=None,
):
single_file_pipe = single_file_pipe or self.pipeline_class.from_single_file(
self.ckpt_path, torch_dtype=torch.float16
)
for component_name, component in single_file_pipe.components.items():
if not isinstance(component, torch.nn.Module):
continue
assert component.dtype == torch.float16
|
diffusers/tests/single_file/single_file_testing_utils.py/0
|
{
"file_path": "diffusers/tests/single_file/single_file_testing_utils.py",
"repo_id": "diffusers",
"token_count": 7577
}
| 153
|
import gc
import unittest
import torch
from diffusers import (
StableDiffusionXLPipeline,
)
from diffusers.utils.testing_utils import (
enable_full_determinism,
require_torch_gpu,
slow,
)
from .single_file_testing_utils import SDXLSingleFileTesterMixin
enable_full_determinism()
@slow
@require_torch_gpu
class StableDiffusionXLPipelineSingleFileSlowTests(unittest.TestCase, SDXLSingleFileTesterMixin):
pipeline_class = StableDiffusionXLPipeline
ckpt_path = "https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0/blob/main/sd_xl_base_1.0.safetensors"
repo_id = "stabilityai/stable-diffusion-xl-base-1.0"
original_config = (
"https://raw.githubusercontent.com/Stability-AI/generative-models/main/configs/inference/sd_xl_base.yaml"
)
def setUp(self):
super().setUp()
gc.collect()
torch.cuda.empty_cache()
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def get_inputs(self, device, generator_device="cpu", dtype=torch.float32, seed=0):
generator = torch.Generator(device=generator_device).manual_seed(seed)
inputs = {
"prompt": "a fantasy landscape, concept art, high resolution",
"generator": generator,
"num_inference_steps": 2,
"strength": 0.75,
"guidance_scale": 7.5,
"output_type": "np",
}
return inputs
def test_single_file_format_inference_is_same_as_pretrained(self):
super().test_single_file_format_inference_is_same_as_pretrained(expected_max_diff=1e-3)
|
diffusers/tests/single_file/test_stable_diffusion_xl_single_file.py/0
|
{
"file_path": "diffusers/tests/single_file/test_stable_diffusion_xl_single_file.py",
"repo_id": "diffusers",
"token_count": 712
}
| 154
|
# coding=utf-8
# Copyright 2024 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
from collections import defaultdict
def overwrite_file(file, class_name, test_name, correct_line, done_test):
_id = f"{file}_{class_name}_{test_name}"
done_test[_id] += 1
with open(file, "r") as f:
lines = f.readlines()
class_regex = f"class {class_name}("
test_regex = f"{4 * ' '}def {test_name}("
line_begin_regex = f"{8 * ' '}{correct_line.split()[0]}"
another_line_begin_regex = f"{16 * ' '}{correct_line.split()[0]}"
in_class = False
in_func = False
in_line = False
insert_line = False
count = 0
spaces = 0
new_lines = []
for line in lines:
if line.startswith(class_regex):
in_class = True
elif in_class and line.startswith(test_regex):
in_func = True
elif in_class and in_func and (line.startswith(line_begin_regex) or line.startswith(another_line_begin_regex)):
spaces = len(line.split(correct_line.split()[0])[0])
count += 1
if count == done_test[_id]:
in_line = True
if in_class and in_func and in_line:
if ")" not in line:
continue
else:
insert_line = True
if in_class and in_func and in_line and insert_line:
new_lines.append(f"{spaces * ' '}{correct_line}")
in_class = in_func = in_line = insert_line = False
else:
new_lines.append(line)
with open(file, "w") as f:
for line in new_lines:
f.write(line)
def main(correct, fail=None):
if fail is not None:
with open(fail, "r") as f:
test_failures = {l.strip() for l in f.readlines()}
else:
test_failures = None
with open(correct, "r") as f:
correct_lines = f.readlines()
done_tests = defaultdict(int)
for line in correct_lines:
file, class_name, test_name, correct_line = line.split("::")
if test_failures is None or "::".join([file, class_name, test_name]) in test_failures:
overwrite_file(file, class_name, test_name, correct_line, done_tests)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--correct_filename", help="filename of tests with expected result")
parser.add_argument("--fail_filename", help="filename of test failures", type=str, default=None)
args = parser.parse_args()
main(args.correct_filename, args.fail_filename)
|
diffusers/utils/overwrite_expected_slice.py/0
|
{
"file_path": "diffusers/utils/overwrite_expected_slice.py",
"repo_id": "diffusers",
"token_count": 1259
}
| 155
|
<p align="center">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="media/lerobot-logo-thumbnail.png">
<source media="(prefers-color-scheme: light)" srcset="media/lerobot-logo-thumbnail.png">
<img alt="LeRobot, Hugging Face Robotics Library" src="media/lerobot-logo-thumbnail.png" style="max-width: 100%;">
</picture>
<br/>
<br/>
</p>
<div align="center">
[](https://github.com/huggingface/lerobot/actions/workflows/nightly-tests.yml?query=branch%3Amain)
[](https://codecov.io/gh/huggingface/lerobot)
[](https://www.python.org/downloads/)
[](https://github.com/huggingface/lerobot/blob/main/LICENSE)
[](https://pypi.org/project/lerobot/)
[](https://pypi.org/project/lerobot/)
[](https://github.com/huggingface/lerobot/tree/main/examples)
[](https://github.com/huggingface/lerobot/blob/main/CODE_OF_CONDUCT.md)
[](https://discord.gg/s3KuuzsPFb)
</div>
<h2 align="center">
<p><a href="https://github.com/huggingface/lerobot/blob/main/examples/7_get_started_with_real_robot.md">Hot new tutorial: Getting started with real-world robots</a></p>
</h2>
<div align="center">
<img src="media/tutorial/koch_v1_1_leader_follower.webp?raw=true" alt="Koch v1.1 leader and follower arms" title="Koch v1.1 leader and follower arms" width="50%">
<p>We just dropped an in-depth tutorial on how to build your own robot!</p>
<p>Teach it new skills by showing it a few moves with just a laptop.</p>
<p>Then watch your homemade robot act autonomously 🤯</p>
<p>For more info, see <a href="https://x.com/RemiCadene/status/1825455895561859185">our thread on X</a> or <a href="https://github.com/huggingface/lerobot/blob/main/examples/7_get_started_with_real_robot.md">our tutorial page</a>.</p>
</div>
<br/>
<h3 align="center">
<p>LeRobot: State-of-the-art AI for real-world robotics</p>
</h3>
---
🤗 LeRobot aims to provide models, datasets, and tools for real-world robotics in PyTorch. The goal is to lower the barrier to entry to robotics so that everyone can contribute and benefit from sharing datasets and pretrained models.
🤗 LeRobot contains state-of-the-art approaches that have been shown to transfer to the real-world with a focus on imitation learning and reinforcement learning.
🤗 LeRobot already provides a set of pretrained models, datasets with human collected demonstrations, and simulation environments to get started without assembling a robot. In the coming weeks, the plan is to add more and more support for real-world robotics on the most affordable and capable robots out there.
🤗 LeRobot hosts pretrained models and datasets on this Hugging Face community page: [huggingface.co/lerobot](https://huggingface.co/lerobot)
#### Examples of pretrained models on simulation environments
<table>
<tr>
<td><img src="http://remicadene.com/assets/gif/aloha_act.gif" width="100%" alt="ACT policy on ALOHA env"/></td>
<td><img src="http://remicadene.com/assets/gif/simxarm_tdmpc.gif" width="100%" alt="TDMPC policy on SimXArm env"/></td>
<td><img src="http://remicadene.com/assets/gif/pusht_diffusion.gif" width="100%" alt="Diffusion policy on PushT env"/></td>
</tr>
<tr>
<td align="center">ACT policy on ALOHA env</td>
<td align="center">TDMPC policy on SimXArm env</td>
<td align="center">Diffusion policy on PushT env</td>
</tr>
</table>
### Acknowledgment
- Thanks to Tony Zaho, Zipeng Fu and colleagues for open sourcing ACT policy, ALOHA environments and datasets. Ours are adapted from [ALOHA](https://tonyzhaozh.github.io/aloha) and [Mobile ALOHA](https://mobile-aloha.github.io).
- Thanks to Cheng Chi, Zhenjia Xu and colleagues for open sourcing Diffusion policy, Pusht environment and datasets, as well as UMI datasets. Ours are adapted from [Diffusion Policy](https://diffusion-policy.cs.columbia.edu) and [UMI Gripper](https://umi-gripper.github.io).
- Thanks to Nicklas Hansen, Yunhai Feng and colleagues for open sourcing TDMPC policy, Simxarm environments and datasets. Ours are adapted from [TDMPC](https://github.com/nicklashansen/tdmpc) and [FOWM](https://www.yunhaifeng.com/FOWM).
- Thanks to Antonio Loquercio and Ashish Kumar for their early support.
- Thanks to [Seungjae (Jay) Lee](https://sjlee.cc/), [Mahi Shafiullah](https://mahis.life/) and colleagues for open sourcing [VQ-BeT](https://sjlee.cc/vq-bet/) policy and helping us adapt the codebase to our repository. The policy is adapted from [VQ-BeT repo](https://github.com/jayLEE0301/vq_bet_official).
## Installation
Download our source code:
```bash
git clone https://github.com/huggingface/lerobot.git
cd lerobot
```
Create a virtual environment with Python 3.10 and activate it, e.g. with [`miniconda`](https://docs.anaconda.com/free/miniconda/index.html):
```bash
conda create -y -n lerobot python=3.10
conda activate lerobot
```
Install 🤗 LeRobot:
```bash
pip install -e .
```
> **NOTE:** Depending on your platform, If you encounter any build errors during this step
you may need to install `cmake` and `build-essential` for building some of our dependencies.
On linux: `sudo apt-get install cmake build-essential`
For simulations, 🤗 LeRobot comes with gymnasium environments that can be installed as extras:
- [aloha](https://github.com/huggingface/gym-aloha)
- [xarm](https://github.com/huggingface/gym-xarm)
- [pusht](https://github.com/huggingface/gym-pusht)
For instance, to install 🤗 LeRobot with aloha and pusht, use:
```bash
pip install -e ".[aloha, pusht]"
```
To use [Weights and Biases](https://docs.wandb.ai/quickstart) for experiment tracking, log in with
```bash
wandb login
```
(note: you will also need to enable WandB in the configuration. See below.)
## Walkthrough
```
.
├── examples # contains demonstration examples, start here to learn about LeRobot
| └── advanced # contains even more examples for those who have mastered the basics
├── lerobot
| ├── configs # contains hydra yaml files with all options that you can override in the command line
| | ├── default.yaml # selected by default, it loads pusht environment and diffusion policy
| | ├── env # various sim environments and their datasets: aloha.yaml, pusht.yaml, xarm.yaml
| | └── policy # various policies: act.yaml, diffusion.yaml, tdmpc.yaml
| ├── common # contains classes and utilities
| | ├── datasets # various datasets of human demonstrations: aloha, pusht, xarm
| | ├── envs # various sim environments: aloha, pusht, xarm
| | ├── policies # various policies: act, diffusion, tdmpc
| | ├── robot_devices # various real devices: dynamixel motors, opencv cameras, koch robots
| | └── utils # various utilities
| └── scripts # contains functions to execute via command line
| ├── eval.py # load policy and evaluate it on an environment
| ├── train.py # train a policy via imitation learning and/or reinforcement learning
| ├── control_robot.py # teleoperate a real robot, record data, run a policy
| ├── push_dataset_to_hub.py # convert your dataset into LeRobot dataset format and upload it to the Hugging Face hub
| └── visualize_dataset.py # load a dataset and render its demonstrations
├── outputs # contains results of scripts execution: logs, videos, model checkpoints
└── tests # contains pytest utilities for continuous integration
```
### Visualize datasets
Check out [example 1](./examples/1_load_lerobot_dataset.py) that illustrates how to use our dataset class which automatically download data from the Hugging Face hub.
You can also locally visualize episodes from a dataset on the hub by executing our script from the command line:
```bash
python lerobot/scripts/visualize_dataset.py \
--repo-id lerobot/pusht \
--episode-index 0
```
or from a dataset in a local folder with the root `DATA_DIR` environment variable (in the following case the dataset will be searched for in `./my_local_data_dir/lerobot/pusht`)
```bash
DATA_DIR='./my_local_data_dir' python lerobot/scripts/visualize_dataset.py \
--repo-id lerobot/pusht \
--episode-index 0
```
It will open `rerun.io` and display the camera streams, robot states and actions, like this:
https://github-production-user-asset-6210df.s3.amazonaws.com/4681518/328035972-fd46b787-b532-47e2-bb6f-fd536a55a7ed.mov?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAVCODYLSA53PQK4ZA%2F20240505%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240505T172924Z&X-Amz-Expires=300&X-Amz-Signature=d680b26c532eeaf80740f08af3320d22ad0b8a4e4da1bcc4f33142c15b509eda&X-Amz-SignedHeaders=host&actor_id=24889239&key_id=0&repo_id=748713144
Our script can also visualize datasets stored on a distant server. See `python lerobot/scripts/visualize_dataset.py --help` for more instructions.
### The `LeRobotDataset` format
A dataset in `LeRobotDataset` format is very simple to use. It can be loaded from a repository on the Hugging Face hub or a local folder simply with e.g. `dataset = LeRobotDataset("lerobot/aloha_static_coffee")` and can be indexed into like any Hugging Face and PyTorch dataset. For instance `dataset[0]` will retrieve a single temporal frame from the dataset containing observation(s) and an action as PyTorch tensors ready to be fed to a model.
A specificity of `LeRobotDataset` is that, rather than retrieving a single frame by its index, we can retrieve several frames based on their temporal relationship with the indexed frame, by setting `delta_timestamps` to a list of relative times with respect to the indexed frame. For example, with `delta_timestamps = {"observation.image": [-1, -0.5, -0.2, 0]}` one can retrieve, for a given index, 4 frames: 3 "previous" frames 1 second, 0.5 seconds, and 0.2 seconds before the indexed frame, and the indexed frame itself (corresponding to the 0 entry). See example [1_load_lerobot_dataset.py](examples/1_load_lerobot_dataset.py) for more details on `delta_timestamps`.
Under the hood, the `LeRobotDataset` format makes use of several ways to serialize data which can be useful to understand if you plan to work more closely with this format. We tried to make a flexible yet simple dataset format that would cover most type of features and specificities present in reinforcement learning and robotics, in simulation and in real-world, with a focus on cameras and robot states but easily extended to other types of sensory inputs as long as they can be represented by a tensor.
Here are the important details and internal structure organization of a typical `LeRobotDataset` instantiated with `dataset = LeRobotDataset("lerobot/aloha_static_coffee")`. The exact features will change from dataset to dataset but not the main aspects:
```
dataset attributes:
├ hf_dataset: a Hugging Face dataset (backed by Arrow/parquet). Typical features example:
│ ├ observation.images.cam_high (VideoFrame):
│ │ VideoFrame = {'path': path to a mp4 video, 'timestamp' (float32): timestamp in the video}
│ ├ observation.state (list of float32): position of an arm joints (for instance)
│ ... (more observations)
│ ├ action (list of float32): goal position of an arm joints (for instance)
│ ├ episode_index (int64): index of the episode for this sample
│ ├ frame_index (int64): index of the frame for this sample in the episode ; starts at 0 for each episode
│ ├ timestamp (float32): timestamp in the episode
│ ├ next.done (bool): indicates the end of en episode ; True for the last frame in each episode
│ └ index (int64): general index in the whole dataset
├ episode_data_index: contains 2 tensors with the start and end indices of each episode
│ ├ from (1D int64 tensor): first frame index for each episode — shape (num episodes,) starts with 0
│ └ to: (1D int64 tensor): last frame index for each episode — shape (num episodes,)
├ stats: a dictionary of statistics (max, mean, min, std) for each feature in the dataset, for instance
│ ├ observation.images.cam_high: {'max': tensor with same number of dimensions (e.g. `(c, 1, 1)` for images, `(c,)` for states), etc.}
│ ...
├ info: a dictionary of metadata on the dataset
│ ├ codebase_version (str): this is to keep track of the codebase version the dataset was created with
│ ├ fps (float): frame per second the dataset is recorded/synchronized to
│ ├ video (bool): indicates if frames are encoded in mp4 video files to save space or stored as png files
│ └ encoding (dict): if video, this documents the main options that were used with ffmpeg to encode the videos
├ videos_dir (Path): where the mp4 videos or png images are stored/accessed
└ camera_keys (list of string): the keys to access camera features in the item returned by the dataset (e.g. `["observation.images.cam_high", ...]`)
```
A `LeRobotDataset` is serialised using several widespread file formats for each of its parts, namely:
- hf_dataset stored using Hugging Face datasets library serialization to parquet
- videos are stored in mp4 format to save space or png files
- episode_data_index saved using `safetensor` tensor serialization format
- stats saved using `safetensor` tensor serialization format
- info are saved using JSON
Dataset can be uploaded/downloaded from the HuggingFace hub seamlessly. To work on a local dataset, you can set the `DATA_DIR` environment variable to your root dataset folder as illustrated in the above section on dataset visualization.
### Evaluate a pretrained policy
Check out [example 2](./examples/2_evaluate_pretrained_policy.py) that illustrates how to download a pretrained policy from Hugging Face hub, and run an evaluation on its corresponding environment.
We also provide a more capable script to parallelize the evaluation over multiple environments during the same rollout. Here is an example with a pretrained model hosted on [lerobot/diffusion_pusht](https://huggingface.co/lerobot/diffusion_pusht):
```bash
python lerobot/scripts/eval.py \
-p lerobot/diffusion_pusht \
eval.n_episodes=10 \
eval.batch_size=10
```
Note: After training your own policy, you can re-evaluate the checkpoints with:
```bash
python lerobot/scripts/eval.py -p {OUTPUT_DIR}/checkpoints/last/pretrained_model
```
See `python lerobot/scripts/eval.py --help` for more instructions.
### Train your own policy
Check out [example 3](./examples/3_train_policy.py) that illustrates how to train a model using our core library in python, and [example 4](./examples/4_train_policy_with_script.md) that shows how to use our training script from command line.
In general, you can use our training script to easily train any policy. Here is an example of training the ACT policy on trajectories collected by humans on the Aloha simulation environment for the insertion task:
```bash
python lerobot/scripts/train.py \
policy=act \
env=aloha \
env.task=AlohaInsertion-v0 \
dataset_repo_id=lerobot/aloha_sim_insertion_human \
```
The experiment directory is automatically generated and will show up in yellow in your terminal. It looks like `outputs/train/2024-05-05/20-21-12_aloha_act_default`. You can manually specify an experiment directory by adding this argument to the `train.py` python command:
```bash
hydra.run.dir=your/new/experiment/dir
```
In the experiment directory there will be a folder called `checkpoints` which will have the following structure:
```bash
checkpoints
├── 000250 # checkpoint_dir for training step 250
│ ├── pretrained_model # Hugging Face pretrained model dir
│ │ ├── config.json # Hugging Face pretrained model config
│ │ ├── config.yaml # consolidated Hydra config
│ │ ├── model.safetensors # model weights
│ │ └── README.md # Hugging Face model card
│ └── training_state.pth # optimizer/scheduler/rng state and training step
```
To resume training from a checkpoint, you can add these to the `train.py` python command:
```bash
hydra.run.dir=your/original/experiment/dir resume=true
```
It will load the pretrained model, optimizer and scheduler states for training. For more information please see our tutorial on training resumption [here](https://github.com/huggingface/lerobot/blob/main/examples/5_resume_training.md).
To use wandb for logging training and evaluation curves, make sure you've run `wandb login` as a one-time setup step. Then, when running the training command above, enable WandB in the configuration by adding:
```bash
wandb.enable=true
```
A link to the wandb logs for the run will also show up in yellow in your terminal. Here is an example of what they look like in your browser. Please also check [here](https://github.com/huggingface/lerobot/blob/main/examples/4_train_policy_with_script.md#typical-logs-and-metrics) for the explaination of some commonly used metrics in logs.
Note: For efficiency, during training every checkpoint is evaluated on a low number of episodes. You may use `eval.n_episodes=500` to evaluate on more episodes than the default. Or, after training, you may want to re-evaluate your best checkpoints on more episodes or change the evaluation settings. See `python lerobot/scripts/eval.py --help` for more instructions.
#### Reproduce state-of-the-art (SOTA)
We have organized our configuration files (found under [`lerobot/configs`](./lerobot/configs)) such that they reproduce SOTA results from a given model variant in their respective original works. Simply running:
```bash
python lerobot/scripts/train.py policy=diffusion env=pusht
```
reproduces SOTA results for Diffusion Policy on the PushT task.
Pretrained policies, along with reproduction details, can be found under the "Models" section of https://huggingface.co/lerobot.
## Contribute
If you would like to contribute to 🤗 LeRobot, please check out our [contribution guide](https://github.com/huggingface/lerobot/blob/main/CONTRIBUTING.md).
### Add a new dataset
To add a dataset to the hub, you need to login using a write-access token, which can be generated from the [Hugging Face settings](https://huggingface.co/settings/tokens):
```bash
huggingface-cli login --token ${HUGGINGFACE_TOKEN} --add-to-git-credential
```
Then point to your raw dataset folder (e.g. `data/aloha_static_pingpong_test_raw`), and push your dataset to the hub with:
```bash
python lerobot/scripts/push_dataset_to_hub.py \
--raw-dir data/aloha_static_pingpong_test_raw \
--out-dir data \
--repo-id lerobot/aloha_static_pingpong_test \
--raw-format aloha_hdf5
```
See `python lerobot/scripts/push_dataset_to_hub.py --help` for more instructions.
If your dataset format is not supported, implement your own in `lerobot/common/datasets/push_dataset_to_hub/${raw_format}_format.py` by copying examples like [pusht_zarr](https://github.com/huggingface/lerobot/blob/main/lerobot/common/datasets/push_dataset_to_hub/pusht_zarr_format.py), [umi_zarr](https://github.com/huggingface/lerobot/blob/main/lerobot/common/datasets/push_dataset_to_hub/umi_zarr_format.py), [aloha_hdf5](https://github.com/huggingface/lerobot/blob/main/lerobot/common/datasets/push_dataset_to_hub/aloha_hdf5_format.py), or [xarm_pkl](https://github.com/huggingface/lerobot/blob/main/lerobot/common/datasets/push_dataset_to_hub/xarm_pkl_format.py).
### Add a pretrained policy
Once you have trained a policy you may upload it to the Hugging Face hub using a hub id that looks like `${hf_user}/${repo_name}` (e.g. [lerobot/diffusion_pusht](https://huggingface.co/lerobot/diffusion_pusht)).
You first need to find the checkpoint folder located inside your experiment directory (e.g. `outputs/train/2024-05-05/20-21-12_aloha_act_default/checkpoints/002500`). Within that there is a `pretrained_model` directory which should contain:
- `config.json`: A serialized version of the policy configuration (following the policy's dataclass config).
- `model.safetensors`: A set of `torch.nn.Module` parameters, saved in [Hugging Face Safetensors](https://huggingface.co/docs/safetensors/index) format.
- `config.yaml`: A consolidated Hydra training configuration containing the policy, environment, and dataset configs. The policy configuration should match `config.json` exactly. The environment config is useful for anyone who wants to evaluate your policy. The dataset config just serves as a paper trail for reproducibility.
To upload these to the hub, run the following:
```bash
huggingface-cli upload ${hf_user}/${repo_name} path/to/pretrained_model
```
See [eval.py](https://github.com/huggingface/lerobot/blob/main/lerobot/scripts/eval.py) for an example of how other people may use your policy.
### Improve your code with profiling
An example of a code snippet to profile the evaluation of a policy:
```python
from torch.profiler import profile, record_function, ProfilerActivity
def trace_handler(prof):
prof.export_chrome_trace(f"tmp/trace_schedule_{prof.step_num}.json")
with profile(
activities=[ProfilerActivity.CPU, ProfilerActivity.CUDA],
schedule=torch.profiler.schedule(
wait=2,
warmup=2,
active=3,
),
on_trace_ready=trace_handler
) as prof:
with record_function("eval_policy"):
for i in range(num_episodes):
prof.step()
# insert code to profile, potentially whole body of eval_policy function
```
## Citation
If you want, you can cite this work with:
```bibtex
@misc{cadene2024lerobot,
author = {Cadene, Remi and Alibert, Simon and Soare, Alexander and Gallouedec, Quentin and Zouitine, Adil and Wolf, Thomas},
title = {LeRobot: State-of-the-art Machine Learning for Real-World Robotics in Pytorch},
howpublished = "\url{https://github.com/huggingface/lerobot}",
year = {2024}
}
```
Additionally, if you are using any of the particular policy architecture, pretrained models, or datasets, it is recommended to cite the original authors of the work as they appear below:
- [Diffusion Policy](https://diffusion-policy.cs.columbia.edu)
```bibtex
@article{chi2024diffusionpolicy,
author = {Cheng Chi and Zhenjia Xu and Siyuan Feng and Eric Cousineau and Yilun Du and Benjamin Burchfiel and Russ Tedrake and Shuran Song},
title ={Diffusion Policy: Visuomotor Policy Learning via Action Diffusion},
journal = {The International Journal of Robotics Research},
year = {2024},
}
```
- [ACT or ALOHA](https://tonyzhaozh.github.io/aloha)
```bibtex
@article{zhao2023learning,
title={Learning fine-grained bimanual manipulation with low-cost hardware},
author={Zhao, Tony Z and Kumar, Vikash and Levine, Sergey and Finn, Chelsea},
journal={arXiv preprint arXiv:2304.13705},
year={2023}
}
```
- [TDMPC](https://www.nicklashansen.com/td-mpc/)
```bibtex
@inproceedings{Hansen2022tdmpc,
title={Temporal Difference Learning for Model Predictive Control},
author={Nicklas Hansen and Xiaolong Wang and Hao Su},
booktitle={ICML},
year={2022}
}
```
- [VQ-BeT](https://sjlee.cc/vq-bet/)
```bibtex
@article{lee2024behavior,
title={Behavior generation with latent actions},
author={Lee, Seungjae and Wang, Yibin and Etukuru, Haritheja and Kim, H Jin and Shafiullah, Nur Muhammad Mahi and Pinto, Lerrel},
journal={arXiv preprint arXiv:2403.03181},
year={2024}
}
```
|
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|
{
"file_path": "lerobot/README.md",
"repo_id": "lerobot",
"token_count": 7846
}
| 156
|
"""This script demonstrates how to slice a dataset and calculate the loss on a subset of the data.
This technique can be useful for debugging and testing purposes, as well as identifying whether a policy
is learning effectively.
Furthermore, relying on validation loss to evaluate performance is generally not considered a good practice,
especially in the context of imitation learning. The most reliable approach is to evaluate the policy directly
on the target environment, whether that be in simulation or the real world.
"""
import math
from pathlib import Path
import torch
from huggingface_hub import snapshot_download
from lerobot.common.datasets.lerobot_dataset import LeRobotDataset
from lerobot.common.policies.diffusion.modeling_diffusion import DiffusionPolicy
device = torch.device("cuda")
# Download the diffusion policy for pusht environment
pretrained_policy_path = Path(snapshot_download("lerobot/diffusion_pusht"))
# OR uncomment the following to evaluate a policy from the local outputs/train folder.
# pretrained_policy_path = Path("outputs/train/example_pusht_diffusion")
policy = DiffusionPolicy.from_pretrained(pretrained_policy_path)
policy.eval()
policy.to(device)
# Set up the dataset.
delta_timestamps = {
# Load the previous image and state at -0.1 seconds before current frame,
# then load current image and state corresponding to 0.0 second.
"observation.image": [-0.1, 0.0],
"observation.state": [-0.1, 0.0],
# Load the previous action (-0.1), the next action to be executed (0.0),
# and 14 future actions with a 0.1 seconds spacing. All these actions will be
# used to calculate the loss.
"action": [-0.1, 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4],
}
# Load the last 10% of episodes of the dataset as a validation set.
# - Load full dataset
full_dataset = LeRobotDataset("lerobot/pusht", split="train")
# - Calculate train and val subsets
num_train_episodes = math.floor(full_dataset.num_episodes * 90 / 100)
num_val_episodes = full_dataset.num_episodes - num_train_episodes
print(f"Number of episodes in full dataset: {full_dataset.num_episodes}")
print(f"Number of episodes in training dataset (90% subset): {num_train_episodes}")
print(f"Number of episodes in validation dataset (10% subset): {num_val_episodes}")
# - Get first frame index of the validation set
first_val_frame_index = full_dataset.episode_data_index["from"][num_train_episodes].item()
# - Load frames subset belonging to validation set using the `split` argument.
# It utilizes the `datasets` library's syntax for slicing datasets.
# For more information on the Slice API, please see:
# https://huggingface.co/docs/datasets/v2.19.0/loading#slice-splits
train_dataset = LeRobotDataset(
"lerobot/pusht", split=f"train[:{first_val_frame_index}]", delta_timestamps=delta_timestamps
)
val_dataset = LeRobotDataset(
"lerobot/pusht", split=f"train[{first_val_frame_index}:]", delta_timestamps=delta_timestamps
)
print(f"Number of frames in training dataset (90% subset): {len(train_dataset)}")
print(f"Number of frames in validation dataset (10% subset): {len(val_dataset)}")
# Create dataloader for evaluation.
val_dataloader = torch.utils.data.DataLoader(
val_dataset,
num_workers=4,
batch_size=64,
shuffle=False,
pin_memory=device != torch.device("cpu"),
drop_last=False,
)
# Run validation loop.
loss_cumsum = 0
n_examples_evaluated = 0
for batch in val_dataloader:
batch = {k: v.to(device, non_blocking=True) for k, v in batch.items()}
output_dict = policy.forward(batch)
loss_cumsum += output_dict["loss"].item()
n_examples_evaluated += batch["index"].shape[0]
# Calculate the average loss over the validation set.
average_loss = loss_cumsum / n_examples_evaluated
print(f"Average loss on validation set: {average_loss:.4f}")
|
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|
{
"file_path": "lerobot/examples/advanced/2_calculate_validation_loss.py",
"repo_id": "lerobot",
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| 157
|
#!/usr/bin/env python
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Process pickle files formatted like in: https://github.com/fyhMer/fowm"""
import pickle
import shutil
from pathlib import Path
import einops
import torch
import tqdm
from datasets import Dataset, Features, Image, Sequence, Value
from PIL import Image as PILImage
from lerobot.common.datasets.lerobot_dataset import CODEBASE_VERSION
from lerobot.common.datasets.push_dataset_to_hub.utils import (
concatenate_episodes,
get_default_encoding,
save_images_concurrently,
)
from lerobot.common.datasets.utils import (
calculate_episode_data_index,
hf_transform_to_torch,
)
from lerobot.common.datasets.video_utils import VideoFrame, encode_video_frames
def check_format(raw_dir):
keys = {"actions", "rewards", "dones"}
nested_keys = {"observations": {"rgb", "state"}, "next_observations": {"rgb", "state"}}
xarm_files = list(raw_dir.glob("*.pkl"))
assert len(xarm_files) > 0
with open(xarm_files[0], "rb") as f:
dataset_dict = pickle.load(f)
assert isinstance(dataset_dict, dict)
assert all(k in dataset_dict for k in keys)
# Check for consistent lengths in nested keys
expected_len = len(dataset_dict["actions"])
assert all(len(dataset_dict[key]) == expected_len for key in keys if key in dataset_dict)
for key, subkeys in nested_keys.items():
nested_dict = dataset_dict.get(key, {})
assert all(len(nested_dict[subkey]) == expected_len for subkey in subkeys if subkey in nested_dict)
def load_from_raw(
raw_dir: Path,
videos_dir: Path,
fps: int,
video: bool,
episodes: list[int] | None = None,
encoding: dict | None = None,
):
pkl_path = raw_dir / "buffer.pkl"
with open(pkl_path, "rb") as f:
pkl_data = pickle.load(f)
# load data indices from which each episode starts and ends
from_ids, to_ids = [], []
from_idx, to_idx = 0, 0
for done in pkl_data["dones"]:
to_idx += 1
if not done:
continue
from_ids.append(from_idx)
to_ids.append(to_idx)
from_idx = to_idx
num_episodes = len(from_ids)
ep_dicts = []
ep_ids = episodes if episodes else range(num_episodes)
for ep_idx, selected_ep_idx in tqdm.tqdm(enumerate(ep_ids)):
from_idx = from_ids[selected_ep_idx]
to_idx = to_ids[selected_ep_idx]
num_frames = to_idx - from_idx
image = torch.tensor(pkl_data["observations"]["rgb"][from_idx:to_idx])
image = einops.rearrange(image, "b c h w -> b h w c")
state = torch.tensor(pkl_data["observations"]["state"][from_idx:to_idx])
action = torch.tensor(pkl_data["actions"][from_idx:to_idx])
# TODO(rcadene): we have a missing last frame which is the observation when the env is done
# it is critical to have this frame for tdmpc to predict a "done observation/state"
# next_image = torch.tensor(pkl_data["next_observations"]["rgb"][from_idx:to_idx])
# next_state = torch.tensor(pkl_data["next_observations"]["state"][from_idx:to_idx])
next_reward = torch.tensor(pkl_data["rewards"][from_idx:to_idx])
next_done = torch.tensor(pkl_data["dones"][from_idx:to_idx])
ep_dict = {}
imgs_array = [x.numpy() for x in image]
img_key = "observation.image"
if video:
# save png images in temporary directory
tmp_imgs_dir = videos_dir / "tmp_images"
save_images_concurrently(imgs_array, tmp_imgs_dir)
# encode images to a mp4 video
fname = f"{img_key}_episode_{ep_idx:06d}.mp4"
video_path = videos_dir / fname
encode_video_frames(tmp_imgs_dir, video_path, fps, **(encoding or {}))
# clean temporary images directory
shutil.rmtree(tmp_imgs_dir)
# store the reference to the video frame
ep_dict[img_key] = [{"path": f"videos/{fname}", "timestamp": i / fps} for i in range(num_frames)]
else:
ep_dict[img_key] = [PILImage.fromarray(x) for x in imgs_array]
ep_dict["observation.state"] = state
ep_dict["action"] = action
ep_dict["episode_index"] = torch.tensor([ep_idx] * num_frames, dtype=torch.int64)
ep_dict["frame_index"] = torch.arange(0, num_frames, 1)
ep_dict["timestamp"] = torch.arange(0, num_frames, 1) / fps
# ep_dict["next.observation.image"] = next_image
# ep_dict["next.observation.state"] = next_state
ep_dict["next.reward"] = next_reward
ep_dict["next.done"] = next_done
ep_dicts.append(ep_dict)
data_dict = concatenate_episodes(ep_dicts)
total_frames = data_dict["frame_index"].shape[0]
data_dict["index"] = torch.arange(0, total_frames, 1)
return data_dict
def to_hf_dataset(data_dict, video):
features = {}
if video:
features["observation.image"] = VideoFrame()
else:
features["observation.image"] = Image()
features["observation.state"] = Sequence(
length=data_dict["observation.state"].shape[1], feature=Value(dtype="float32", id=None)
)
features["action"] = Sequence(
length=data_dict["action"].shape[1], feature=Value(dtype="float32", id=None)
)
features["episode_index"] = Value(dtype="int64", id=None)
features["frame_index"] = Value(dtype="int64", id=None)
features["timestamp"] = Value(dtype="float32", id=None)
features["next.reward"] = Value(dtype="float32", id=None)
features["next.done"] = Value(dtype="bool", id=None)
features["index"] = Value(dtype="int64", id=None)
# TODO(rcadene): add success
# features["next.success"] = Value(dtype='bool', id=None)
hf_dataset = Dataset.from_dict(data_dict, features=Features(features))
hf_dataset.set_transform(hf_transform_to_torch)
return hf_dataset
def from_raw_to_lerobot_format(
raw_dir: Path,
videos_dir: Path,
fps: int | None = None,
video: bool = True,
episodes: list[int] | None = None,
encoding: dict | None = None,
):
# sanity check
check_format(raw_dir)
if fps is None:
fps = 15
data_dict = load_from_raw(raw_dir, videos_dir, fps, video, episodes, encoding)
hf_dataset = to_hf_dataset(data_dict, video)
episode_data_index = calculate_episode_data_index(hf_dataset)
info = {
"codebase_version": CODEBASE_VERSION,
"fps": fps,
"video": video,
}
if video:
info["encoding"] = get_default_encoding()
return hf_dataset, episode_data_index, info
|
lerobot/lerobot/common/datasets/push_dataset_to_hub/xarm_pkl_format.py/0
|
{
"file_path": "lerobot/lerobot/common/datasets/push_dataset_to_hub/xarm_pkl_format.py",
"repo_id": "lerobot",
"token_count": 2996
}
| 158
|
#!/usr/bin/env python
# Copyright 2024 Nicklas Hansen, Xiaolong Wang, Hao Su,
# and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Implementation of Finetuning Offline World Models in the Real World.
The comments in this code may sometimes refer to these references:
TD-MPC paper: Temporal Difference Learning for Model Predictive Control (https://arxiv.org/abs/2203.04955)
FOWM paper: Finetuning Offline World Models in the Real World (https://arxiv.org/abs/2310.16029)
"""
# ruff: noqa: N806
from collections import deque
from copy import deepcopy
from functools import partial
from typing import Callable
import einops
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F # noqa: N812
from huggingface_hub import PyTorchModelHubMixin
from torch import Tensor
from lerobot.common.policies.normalize import Normalize, Unnormalize
from lerobot.common.policies.tdmpc.configuration_tdmpc import TDMPCConfig
from lerobot.common.policies.utils import get_device_from_parameters, populate_queues
class TDMPCPolicy(
nn.Module,
PyTorchModelHubMixin,
library_name="lerobot",
repo_url="https://github.com/huggingface/lerobot",
tags=["robotics", "tdmpc"],
):
"""Implementation of TD-MPC learning + inference.
Please note several warnings for this policy.
- Evaluation of pretrained weights created with the original FOWM code
(https://github.com/fyhMer/fowm) works as expected. To be precise: we trained and evaluated a
model with the FOWM code for the xarm_lift_medium_replay dataset. We ported the weights across
to LeRobot, and were able to evaluate with the same success metric. BUT, we had to use inter-
process communication to use the xarm environment from FOWM. This is because our xarm
environment uses newer dependencies and does not match the environment in FOWM. See
https://github.com/huggingface/lerobot/pull/103 for implementation details.
- We have NOT checked that training on LeRobot reproduces the results from FOWM.
- Nevertheless, we have verified that we can train TD-MPC for PushT. See
`lerobot/configs/policy/tdmpc_pusht_keypoints.yaml`.
- Our current xarm datasets were generated using the environment from FOWM. Therefore they do not
match our xarm environment.
"""
name = "tdmpc"
def __init__(
self, config: TDMPCConfig | None = None, dataset_stats: dict[str, dict[str, Tensor]] | None = None
):
"""
Args:
config: Policy configuration class instance or None, in which case the default instantiation of
the configuration class is used.
dataset_stats: Dataset statistics to be used for normalization. If not passed here, it is expected
that they will be passed with a call to `load_state_dict` before the policy is used.
"""
super().__init__()
if config is None:
config = TDMPCConfig()
self.config = config
self.model = TDMPCTOLD(config)
self.model_target = deepcopy(self.model)
for param in self.model_target.parameters():
param.requires_grad = False
if config.input_normalization_modes is not None:
self.normalize_inputs = Normalize(
config.input_shapes, config.input_normalization_modes, dataset_stats
)
else:
self.normalize_inputs = nn.Identity()
self.normalize_targets = Normalize(
config.output_shapes, config.output_normalization_modes, dataset_stats
)
self.unnormalize_outputs = Unnormalize(
config.output_shapes, config.output_normalization_modes, dataset_stats
)
image_keys = [k for k in config.input_shapes if k.startswith("observation.image")]
# Note: This check is covered in the post-init of the config but have a sanity check just in case.
self._use_image = False
self._use_env_state = False
if len(image_keys) > 0:
assert len(image_keys) == 1
self._use_image = True
self.input_image_key = image_keys[0]
if "observation.environment_state" in config.input_shapes:
self._use_env_state = True
self.reset()
def reset(self):
"""
Clear observation and action queues. Clear previous means for warm starting of MPPI/CEM. Should be
called on `env.reset()`
"""
self._queues = {
"observation.state": deque(maxlen=1),
"action": deque(maxlen=max(self.config.n_action_steps, self.config.n_action_repeats)),
}
if self._use_image:
self._queues["observation.image"] = deque(maxlen=1)
if self._use_env_state:
self._queues["observation.environment_state"] = deque(maxlen=1)
# Previous mean obtained from the cross-entropy method (CEM) used during MPC. It is used to warm start
# CEM for the next step.
self._prev_mean: torch.Tensor | None = None
@torch.no_grad()
def select_action(self, batch: dict[str, Tensor]) -> Tensor:
"""Select a single action given environment observations."""
batch = self.normalize_inputs(batch)
if self._use_image:
batch = dict(batch) # shallow copy so that adding a key doesn't modify the original
batch["observation.image"] = batch[self.input_image_key]
self._queues = populate_queues(self._queues, batch)
# When the action queue is depleted, populate it again by querying the policy.
if len(self._queues["action"]) == 0:
batch = {key: torch.stack(list(self._queues[key]), dim=1) for key in batch}
# Remove the time dimensions as it is not handled yet.
for key in batch:
assert batch[key].shape[1] == 1
batch[key] = batch[key][:, 0]
# NOTE: Order of observations matters here.
encode_keys = []
if self._use_image:
encode_keys.append("observation.image")
if self._use_env_state:
encode_keys.append("observation.environment_state")
encode_keys.append("observation.state")
z = self.model.encode({k: batch[k] for k in encode_keys})
if self.config.use_mpc: # noqa: SIM108
actions = self.plan(z) # (horizon, batch, action_dim)
else:
# Plan with the policy (π) alone. This always returns one action so unsqueeze to get a
# sequence dimension like in the MPC branch.
actions = self.model.pi(z).unsqueeze(0)
actions = torch.clamp(actions, -1, +1)
actions = self.unnormalize_outputs({"action": actions})["action"]
if self.config.n_action_repeats > 1:
for _ in range(self.config.n_action_repeats):
self._queues["action"].append(actions[0])
else:
# Action queue is (n_action_steps, batch_size, action_dim), so we transpose the action.
self._queues["action"].extend(actions[: self.config.n_action_steps])
action = self._queues["action"].popleft()
return action
@torch.no_grad()
def plan(self, z: Tensor) -> Tensor:
"""Plan sequence of actions using TD-MPC inference.
Args:
z: (batch, latent_dim,) tensor for the initial state.
Returns:
(horizon, batch, action_dim,) tensor for the planned trajectory of actions.
"""
device = get_device_from_parameters(self)
batch_size = z.shape[0]
# Sample Nπ trajectories from the policy.
pi_actions = torch.empty(
self.config.horizon,
self.config.n_pi_samples,
batch_size,
self.config.output_shapes["action"][0],
device=device,
)
if self.config.n_pi_samples > 0:
_z = einops.repeat(z, "b d -> n b d", n=self.config.n_pi_samples)
for t in range(self.config.horizon):
# Note: Adding a small amount of noise here doesn't hurt during inference and may even be
# helpful for CEM.
pi_actions[t] = self.model.pi(_z, self.config.min_std)
_z = self.model.latent_dynamics(_z, pi_actions[t])
# In the CEM loop we will need this for a call to estimate_value with the gaussian sampled
# trajectories.
z = einops.repeat(z, "b d -> n b d", n=self.config.n_gaussian_samples + self.config.n_pi_samples)
# Model Predictive Path Integral (MPPI) with the cross-entropy method (CEM) as the optimization
# algorithm.
# The initial mean and standard deviation for the cross-entropy method (CEM).
mean = torch.zeros(
self.config.horizon, batch_size, self.config.output_shapes["action"][0], device=device
)
# Maybe warm start CEM with the mean from the previous step.
if self._prev_mean is not None:
mean[:-1] = self._prev_mean[1:]
std = self.config.max_std * torch.ones_like(mean)
for _ in range(self.config.cem_iterations):
# Randomly sample action trajectories for the gaussian distribution.
std_normal_noise = torch.randn(
self.config.horizon,
self.config.n_gaussian_samples,
batch_size,
self.config.output_shapes["action"][0],
device=std.device,
)
gaussian_actions = torch.clamp(mean.unsqueeze(1) + std.unsqueeze(1) * std_normal_noise, -1, 1)
# Compute elite actions.
actions = torch.cat([gaussian_actions, pi_actions], dim=1)
value = self.estimate_value(z, actions).nan_to_num_(0)
elite_idxs = torch.topk(value, self.config.n_elites, dim=0).indices # (n_elites, batch)
elite_value = value.take_along_dim(elite_idxs, dim=0) # (n_elites, batch)
# (horizon, n_elites, batch, action_dim)
elite_actions = actions.take_along_dim(einops.rearrange(elite_idxs, "n b -> 1 n b 1"), dim=1)
# Update gaussian PDF parameters to be the (weighted) mean and standard deviation of the elites.
max_value = elite_value.max(0, keepdim=True)[0] # (1, batch)
# The weighting is a softmax over trajectory values. Note that this is not the same as the usage
# of Ω in eqn 4 of the TD-MPC paper. Instead it is the normalized version of it: s = Ω/ΣΩ. This
# makes the equations: μ = Σ(s⋅Γ), σ = Σ(s⋅(Γ-μ)²).
score = torch.exp(self.config.elite_weighting_temperature * (elite_value - max_value))
score /= score.sum(axis=0, keepdim=True)
# (horizon, batch, action_dim)
_mean = torch.sum(einops.rearrange(score, "n b -> n b 1") * elite_actions, dim=1)
_std = torch.sqrt(
torch.sum(
einops.rearrange(score, "n b -> n b 1")
* (elite_actions - einops.rearrange(_mean, "h b d -> h 1 b d")) ** 2,
dim=1,
)
)
# Update mean with an exponential moving average, and std with a direct replacement.
mean = (
self.config.gaussian_mean_momentum * mean + (1 - self.config.gaussian_mean_momentum) * _mean
)
std = _std.clamp_(self.config.min_std, self.config.max_std)
# Keep track of the mean for warm-starting subsequent steps.
self._prev_mean = mean
# Randomly select one of the elite actions from the last iteration of MPPI/CEM using the softmax
# scores from the last iteration.
actions = elite_actions[:, torch.multinomial(score.T, 1).squeeze(), torch.arange(batch_size)]
return actions
@torch.no_grad()
def estimate_value(self, z: Tensor, actions: Tensor):
"""Estimates the value of a trajectory as per eqn 4 of the FOWM paper.
Args:
z: (batch, latent_dim) tensor of initial latent states.
actions: (horizon, batch, action_dim) tensor of action trajectories.
Returns:
(batch,) tensor of values.
"""
# Initialize return and running discount factor.
G, running_discount = 0, 1
# Iterate over the actions in the trajectory to simulate the trajectory using the latent dynamics
# model. Keep track of return.
for t in range(actions.shape[0]):
# We will compute the reward in a moment. First compute the uncertainty regularizer from eqn 4
# of the FOWM paper.
if self.config.uncertainty_regularizer_coeff > 0:
regularization = -(
self.config.uncertainty_regularizer_coeff * self.model.Qs(z, actions[t]).std(0)
)
else:
regularization = 0
# Estimate the next state (latent) and reward.
z, reward = self.model.latent_dynamics_and_reward(z, actions[t])
# Update the return and running discount.
G += running_discount * (reward + regularization)
running_discount *= self.config.discount
# Add the estimated value of the final state (using the minimum for a conservative estimate).
# Do so by predicting the next action, then taking a minimum over the ensemble of state-action value
# estimators.
# Note: This small amount of added noise seems to help a bit at inference time as observed by success
# metrics over 50 episodes of xarm_lift_medium_replay.
next_action = self.model.pi(z, self.config.min_std) # (batch, action_dim)
terminal_values = self.model.Qs(z, next_action) # (ensemble, batch)
# Randomly choose 2 of the Qs for terminal value estimation (as in App C. of the FOWM paper).
if self.config.q_ensemble_size > 2:
G += (
running_discount
* torch.min(terminal_values[torch.randint(0, self.config.q_ensemble_size, size=(2,))], dim=0)[
0
]
)
else:
G += running_discount * torch.min(terminal_values, dim=0)[0]
# Finally, also regularize the terminal value.
if self.config.uncertainty_regularizer_coeff > 0:
G -= running_discount * self.config.uncertainty_regularizer_coeff * terminal_values.std(0)
return G
def forward(self, batch: dict[str, Tensor]) -> dict[str, Tensor | float]:
"""Run the batch through the model and compute the loss.
Returns a dictionary with loss as a tensor, and other information as native floats.
"""
device = get_device_from_parameters(self)
batch = self.normalize_inputs(batch)
if self._use_image:
batch = dict(batch) # shallow copy so that adding a key doesn't modify the original
batch["observation.image"] = batch[self.input_image_key]
batch = self.normalize_targets(batch)
info = {}
# (b, t) -> (t, b)
for key in batch:
if batch[key].ndim > 1:
batch[key] = batch[key].transpose(1, 0)
action = batch["action"] # (t, b, action_dim)
reward = batch["next.reward"] # (t, b)
observations = {k: v for k, v in batch.items() if k.startswith("observation.")}
# Apply random image augmentations.
if self._use_image and self.config.max_random_shift_ratio > 0:
observations["observation.image"] = flatten_forward_unflatten(
partial(random_shifts_aug, max_random_shift_ratio=self.config.max_random_shift_ratio),
observations["observation.image"],
)
# Get the current observation for predicting trajectories, and all future observations for use in
# the latent consistency loss and TD loss.
current_observation, next_observations = {}, {}
for k in observations:
current_observation[k] = observations[k][0]
next_observations[k] = observations[k][1:]
horizon, batch_size = next_observations[
"observation.image" if self._use_image else "observation.environment_state"
].shape[:2]
# Run latent rollout using the latent dynamics model and policy model.
# Note this has shape `horizon+1` because there are `horizon` actions and a current `z`. Each action
# gives us a next `z`.
batch_size = batch["index"].shape[0]
z_preds = torch.empty(horizon + 1, batch_size, self.config.latent_dim, device=device)
z_preds[0] = self.model.encode(current_observation)
reward_preds = torch.empty_like(reward, device=device)
for t in range(horizon):
z_preds[t + 1], reward_preds[t] = self.model.latent_dynamics_and_reward(z_preds[t], action[t])
# Compute Q and V value predictions based on the latent rollout.
q_preds_ensemble = self.model.Qs(z_preds[:-1], action) # (ensemble, horizon, batch)
v_preds = self.model.V(z_preds[:-1])
info.update({"Q": q_preds_ensemble.mean().item(), "V": v_preds.mean().item()})
# Compute various targets with stopgrad.
with torch.no_grad():
# Latent state consistency targets.
z_targets = self.model_target.encode(next_observations)
# State-action value targets (or TD targets) as in eqn 3 of the FOWM. Unlike TD-MPC which uses the
# learned state-action value function in conjunction with the learned policy: Q(z, π(z)), FOWM
# uses a learned state value function: V(z). This means the TD targets only depend on in-sample
# actions (not actions estimated by π).
# Note: Here we do not use self.model_target, but self.model. This is to follow the original code
# and the FOWM paper.
q_targets = reward + self.config.discount * self.model.V(self.model.encode(next_observations))
# From eqn 3 of FOWM. These appear as Q(z, a). Here we call them v_targets to emphasize that we
# are using them to compute loss for V.
v_targets = self.model_target.Qs(z_preds[:-1].detach(), action, return_min=True)
# Compute losses.
# Exponentially decay the loss weight with respect to the timestep. Steps that are more distant in the
# future have less impact on the loss. Note: unsqueeze will let us broadcast to (seq, batch).
temporal_loss_coeffs = torch.pow(
self.config.temporal_decay_coeff, torch.arange(horizon, device=device)
).unsqueeze(-1)
# Compute consistency loss as MSE loss between latents predicted from the rollout and latents
# predicted from the (target model's) observation encoder.
consistency_loss = (
(
temporal_loss_coeffs
* F.mse_loss(z_preds[1:], z_targets, reduction="none").mean(dim=-1)
# `z_preds` depends on the current observation and the actions.
* ~batch["observation.state_is_pad"][0]
* ~batch["action_is_pad"]
# `z_targets` depends on the next observation.
* ~batch["observation.state_is_pad"][1:]
)
.sum(0)
.mean()
)
# Compute the reward loss as MSE loss between rewards predicted from the rollout and the dataset
# rewards.
reward_loss = (
(
temporal_loss_coeffs
* F.mse_loss(reward_preds, reward, reduction="none")
* ~batch["next.reward_is_pad"]
# `reward_preds` depends on the current observation and the actions.
* ~batch["observation.state_is_pad"][0]
* ~batch["action_is_pad"]
)
.sum(0)
.mean()
)
# Compute state-action value loss (TD loss) for all of the Q functions in the ensemble.
q_value_loss = (
(
temporal_loss_coeffs
* F.mse_loss(
q_preds_ensemble,
einops.repeat(q_targets, "t b -> e t b", e=q_preds_ensemble.shape[0]),
reduction="none",
).sum(0) # sum over ensemble
# `q_preds_ensemble` depends on the first observation and the actions.
* ~batch["observation.state_is_pad"][0]
* ~batch["action_is_pad"]
# q_targets depends on the reward and the next observations.
* ~batch["next.reward_is_pad"]
* ~batch["observation.state_is_pad"][1:]
)
.sum(0)
.mean()
)
# Compute state value loss as in eqn 3 of FOWM.
diff = v_targets - v_preds
# Expectile loss penalizes:
# - `v_preds < v_targets` with weighting `expectile_weight`
# - `v_preds >= v_targets` with weighting `1 - expectile_weight`
raw_v_value_loss = torch.where(
diff > 0, self.config.expectile_weight, (1 - self.config.expectile_weight)
) * (diff**2)
v_value_loss = (
(
temporal_loss_coeffs
* raw_v_value_loss
# `v_targets` depends on the first observation and the actions, as does `v_preds`.
* ~batch["observation.state_is_pad"][0]
* ~batch["action_is_pad"]
)
.sum(0)
.mean()
)
# Calculate the advantage weighted regression loss for π as detailed in FOWM 3.1.
# We won't need these gradients again so detach.
z_preds = z_preds.detach()
# Use stopgrad for the advantage calculation.
with torch.no_grad():
advantage = self.model_target.Qs(z_preds[:-1], action, return_min=True) - self.model.V(
z_preds[:-1]
)
info["advantage"] = advantage[0]
# (t, b)
exp_advantage = torch.clamp(torch.exp(advantage * self.config.advantage_scaling), max=100.0)
action_preds = self.model.pi(z_preds[:-1]) # (t, b, a)
# Calculate the MSE between the actions and the action predictions.
# Note: FOWM's original code calculates the log probability (wrt to a unit standard deviation
# gaussian) and sums over the action dimension. Computing the (negative) log probability amounts to
# multiplying the MSE by 0.5 and adding a constant offset (the log(2*pi)/2 term, times the action
# dimension). Here we drop the constant offset as it doesn't change the optimization step, and we drop
# the 0.5 as we instead make a configuration parameter for it (see below where we compute the total
# loss).
mse = F.mse_loss(action_preds, action, reduction="none").sum(-1) # (t, b)
# NOTE: The original implementation does not take the sum over the temporal dimension like with the
# other losses.
# TODO(alexander-soare): Take the sum over the temporal dimension and check that training still works
# as well as expected.
pi_loss = (
exp_advantage
* mse
* temporal_loss_coeffs
# `action_preds` depends on the first observation and the actions.
* ~batch["observation.state_is_pad"][0]
* ~batch["action_is_pad"]
).mean()
loss = (
self.config.consistency_coeff * consistency_loss
+ self.config.reward_coeff * reward_loss
+ self.config.value_coeff * q_value_loss
+ self.config.value_coeff * v_value_loss
+ self.config.pi_coeff * pi_loss
)
info.update(
{
"consistency_loss": consistency_loss.item(),
"reward_loss": reward_loss.item(),
"Q_value_loss": q_value_loss.item(),
"V_value_loss": v_value_loss.item(),
"pi_loss": pi_loss.item(),
"loss": loss,
"sum_loss": loss.item() * self.config.horizon,
}
)
# Undo (b, t) -> (t, b).
for key in batch:
if batch[key].ndim > 1:
batch[key] = batch[key].transpose(1, 0)
return info
def update(self):
"""Update the target model's parameters with an EMA step."""
# Note a minor variation with respect to the original FOWM code. Here they do this based on an EMA
# update frequency parameter which is set to 2 (every 2 steps an update is done). To simplify the code
# we update every step and adjust the decay parameter `alpha` accordingly (0.99 -> 0.995)
update_ema_parameters(self.model_target, self.model, self.config.target_model_momentum)
class TDMPCTOLD(nn.Module):
"""Task-Oriented Latent Dynamics (TOLD) model used in TD-MPC."""
def __init__(self, config: TDMPCConfig):
super().__init__()
self.config = config
self._encoder = TDMPCObservationEncoder(config)
self._dynamics = nn.Sequential(
nn.Linear(config.latent_dim + config.output_shapes["action"][0], config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Mish(),
nn.Linear(config.mlp_dim, config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Mish(),
nn.Linear(config.mlp_dim, config.latent_dim),
nn.LayerNorm(config.latent_dim),
nn.Sigmoid(),
)
self._reward = nn.Sequential(
nn.Linear(config.latent_dim + config.output_shapes["action"][0], config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Mish(),
nn.Linear(config.mlp_dim, config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Mish(),
nn.Linear(config.mlp_dim, 1),
)
self._pi = nn.Sequential(
nn.Linear(config.latent_dim, config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Mish(),
nn.Linear(config.mlp_dim, config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Mish(),
nn.Linear(config.mlp_dim, config.output_shapes["action"][0]),
)
self._Qs = nn.ModuleList(
[
nn.Sequential(
nn.Linear(config.latent_dim + config.output_shapes["action"][0], config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Tanh(),
nn.Linear(config.mlp_dim, config.mlp_dim),
nn.ELU(),
nn.Linear(config.mlp_dim, 1),
)
for _ in range(config.q_ensemble_size)
]
)
self._V = nn.Sequential(
nn.Linear(config.latent_dim, config.mlp_dim),
nn.LayerNorm(config.mlp_dim),
nn.Tanh(),
nn.Linear(config.mlp_dim, config.mlp_dim),
nn.ELU(),
nn.Linear(config.mlp_dim, 1),
)
self._init_weights()
def _init_weights(self):
"""Initialize model weights.
Orthogonal initialization for all linear and convolutional layers' weights (apart from final layers
of reward network and Q networks which get zero initialization).
Zero initialization for all linear and convolutional layers' biases.
"""
def _apply_fn(m):
if isinstance(m, nn.Linear):
nn.init.orthogonal_(m.weight.data)
if m.bias is not None:
nn.init.zeros_(m.bias)
elif isinstance(m, nn.Conv2d):
gain = nn.init.calculate_gain("relu")
nn.init.orthogonal_(m.weight.data, gain)
if m.bias is not None:
nn.init.zeros_(m.bias)
self.apply(_apply_fn)
for m in [self._reward, *self._Qs]:
assert isinstance(
m[-1], nn.Linear
), "Sanity check. The last linear layer needs 0 initialization on weights."
nn.init.zeros_(m[-1].weight)
nn.init.zeros_(m[-1].bias) # this has already been done, but keep this line here for good measure
def encode(self, obs: dict[str, Tensor]) -> Tensor:
"""Encodes an observation into its latent representation."""
return self._encoder(obs)
def latent_dynamics_and_reward(self, z: Tensor, a: Tensor) -> tuple[Tensor, Tensor]:
"""Predict the next state's latent representation and the reward given a current latent and action.
Args:
z: (*, latent_dim) tensor for the current state's latent representation.
a: (*, action_dim) tensor for the action to be applied.
Returns:
A tuple containing:
- (*, latent_dim) tensor for the next state's latent representation.
- (*,) tensor for the estimated reward.
"""
x = torch.cat([z, a], dim=-1)
return self._dynamics(x), self._reward(x).squeeze(-1)
def latent_dynamics(self, z: Tensor, a: Tensor) -> Tensor:
"""Predict the next state's latent representation given a current latent and action.
Args:
z: (*, latent_dim) tensor for the current state's latent representation.
a: (*, action_dim) tensor for the action to be applied.
Returns:
(*, latent_dim) tensor for the next state's latent representation.
"""
x = torch.cat([z, a], dim=-1)
return self._dynamics(x)
def pi(self, z: Tensor, std: float = 0.0) -> Tensor:
"""Samples an action from the learned policy.
The policy can also have added (truncated) Gaussian noise injected for encouraging exploration when
generating rollouts for online training.
Args:
z: (*, latent_dim) tensor for the current state's latent representation.
std: The standard deviation of the injected noise.
Returns:
(*, action_dim) tensor for the sampled action.
"""
action = torch.tanh(self._pi(z))
if std > 0:
std = torch.ones_like(action) * std
action += torch.randn_like(action) * std
return action
def V(self, z: Tensor) -> Tensor: # noqa: N802
"""Predict state value (V).
Args:
z: (*, latent_dim) tensor for the current state's latent representation.
Returns:
(*,) tensor of estimated state values.
"""
return self._V(z).squeeze(-1)
def Qs(self, z: Tensor, a: Tensor, return_min: bool = False) -> Tensor: # noqa: N802
"""Predict state-action value for all of the learned Q functions.
Args:
z: (*, latent_dim) tensor for the current state's latent representation.
a: (*, action_dim) tensor for the action to be applied.
return_min: Set to true for implementing the detail in App. C of the FOWM paper: randomly select
2 of the Qs and return the minimum
Returns:
(q_ensemble, *) tensor for the value predictions of each learned Q function in the ensemble OR
(*,) tensor if return_min=True.
"""
x = torch.cat([z, a], dim=-1)
if not return_min:
return torch.stack([q(x).squeeze(-1) for q in self._Qs], dim=0)
else:
if len(self._Qs) > 2: # noqa: SIM108
Qs = [self._Qs[i] for i in np.random.choice(len(self._Qs), size=2)]
else:
Qs = self._Qs
return torch.stack([q(x).squeeze(-1) for q in Qs], dim=0).min(dim=0)[0]
class TDMPCObservationEncoder(nn.Module):
"""Encode image and/or state vector observations."""
def __init__(self, config: TDMPCConfig):
"""
Creates encoders for pixel and/or state modalities.
TODO(alexander-soare): The original work allows for multiple images by concatenating them along the
channel dimension. Re-implement this capability.
"""
super().__init__()
self.config = config
if "observation.image" in config.input_shapes:
self.image_enc_layers = nn.Sequential(
nn.Conv2d(
config.input_shapes["observation.image"][0], config.image_encoder_hidden_dim, 7, stride=2
),
nn.ReLU(),
nn.Conv2d(config.image_encoder_hidden_dim, config.image_encoder_hidden_dim, 5, stride=2),
nn.ReLU(),
nn.Conv2d(config.image_encoder_hidden_dim, config.image_encoder_hidden_dim, 3, stride=2),
nn.ReLU(),
nn.Conv2d(config.image_encoder_hidden_dim, config.image_encoder_hidden_dim, 3, stride=2),
nn.ReLU(),
)
dummy_batch = torch.zeros(1, *config.input_shapes["observation.image"])
with torch.inference_mode():
out_shape = self.image_enc_layers(dummy_batch).shape[1:]
self.image_enc_layers.extend(
nn.Sequential(
nn.Flatten(),
nn.Linear(np.prod(out_shape), config.latent_dim),
nn.LayerNorm(config.latent_dim),
nn.Sigmoid(),
)
)
if "observation.state" in config.input_shapes:
self.state_enc_layers = nn.Sequential(
nn.Linear(config.input_shapes["observation.state"][0], config.state_encoder_hidden_dim),
nn.ELU(),
nn.Linear(config.state_encoder_hidden_dim, config.latent_dim),
nn.LayerNorm(config.latent_dim),
nn.Sigmoid(),
)
if "observation.environment_state" in config.input_shapes:
self.env_state_enc_layers = nn.Sequential(
nn.Linear(
config.input_shapes["observation.environment_state"][0], config.state_encoder_hidden_dim
),
nn.ELU(),
nn.Linear(config.state_encoder_hidden_dim, config.latent_dim),
nn.LayerNorm(config.latent_dim),
nn.Sigmoid(),
)
def forward(self, obs_dict: dict[str, Tensor]) -> Tensor:
"""Encode the image and/or state vector.
Each modality is encoded into a feature vector of size (latent_dim,) and then a uniform mean is taken
over all features.
"""
feat = []
# NOTE: Order of observations matters here.
if "observation.image" in self.config.input_shapes:
feat.append(flatten_forward_unflatten(self.image_enc_layers, obs_dict["observation.image"]))
if "observation.environment_state" in self.config.input_shapes:
feat.append(self.env_state_enc_layers(obs_dict["observation.environment_state"]))
if "observation.state" in self.config.input_shapes:
feat.append(self.state_enc_layers(obs_dict["observation.state"]))
return torch.stack(feat, dim=0).mean(0)
def random_shifts_aug(x: Tensor, max_random_shift_ratio: float) -> Tensor:
"""Randomly shifts images horizontally and vertically.
Adapted from https://github.com/facebookresearch/drqv2
"""
b, _, h, w = x.size()
assert h == w, "non-square images not handled yet"
pad = int(round(max_random_shift_ratio * h))
x = F.pad(x, tuple([pad] * 4), "replicate")
eps = 1.0 / (h + 2 * pad)
arange = torch.linspace(
-1.0 + eps,
1.0 - eps,
h + 2 * pad,
device=x.device,
dtype=torch.float32,
)[:h]
arange = einops.repeat(arange, "w -> h w 1", h=h)
base_grid = torch.cat([arange, arange.transpose(1, 0)], dim=2)
base_grid = einops.repeat(base_grid, "h w c -> b h w c", b=b)
# A random shift in units of pixels and within the boundaries of the padding.
shift = torch.randint(
0,
2 * pad + 1,
size=(b, 1, 1, 2),
device=x.device,
dtype=torch.float32,
)
shift *= 2.0 / (h + 2 * pad)
grid = base_grid + shift
return F.grid_sample(x, grid, padding_mode="zeros", align_corners=False)
def update_ema_parameters(ema_net: nn.Module, net: nn.Module, alpha: float):
"""Update EMA parameters in place with ema_param <- alpha * ema_param + (1 - alpha) * param."""
for ema_module, module in zip(ema_net.modules(), net.modules(), strict=True):
for (n_p_ema, p_ema), (n_p, p) in zip(
ema_module.named_parameters(recurse=False), module.named_parameters(recurse=False), strict=True
):
assert n_p_ema == n_p, "Parameter names don't match for EMA model update"
if isinstance(p, dict):
raise RuntimeError("Dict parameter not supported")
if isinstance(module, nn.modules.batchnorm._BatchNorm) or not p.requires_grad:
# Copy BatchNorm parameters, and non-trainable parameters directly.
p_ema.copy_(p.to(dtype=p_ema.dtype).data)
with torch.no_grad():
p_ema.mul_(alpha)
p_ema.add_(p.to(dtype=p_ema.dtype).data, alpha=1 - alpha)
def flatten_forward_unflatten(fn: Callable[[Tensor], Tensor], image_tensor: Tensor) -> Tensor:
"""Helper to temporarily flatten extra dims at the start of the image tensor.
Args:
fn: Callable that the image tensor will be passed to. It should accept (B, C, H, W) and return
(B, *), where * is any number of dimensions.
image_tensor: An image tensor of shape (**, C, H, W), where ** is any number of dimensions, generally
different from *.
Returns:
A return value from the callable reshaped to (**, *).
"""
if image_tensor.ndim == 4:
return fn(image_tensor)
start_dims = image_tensor.shape[:-3]
inp = torch.flatten(image_tensor, end_dim=-4)
flat_out = fn(inp)
return torch.reshape(flat_out, (*start_dims, *flat_out.shape[1:]))
|
lerobot/lerobot/common/policies/tdmpc/modeling_tdmpc.py/0
|
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| 159
|
#!/usr/bin/env python
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import os
import os.path as osp
import random
from contextlib import contextmanager
from datetime import datetime, timezone
from pathlib import Path
from typing import Any, Generator
import hydra
import numpy as np
import torch
from omegaconf import DictConfig
def inside_slurm():
"""Check whether the python process was launched through slurm"""
# TODO(rcadene): return False for interactive mode `--pty bash`
return "SLURM_JOB_ID" in os.environ
def get_safe_torch_device(cfg_device: str, log: bool = False) -> torch.device:
"""Given a string, return a torch.device with checks on whether the device is available."""
match cfg_device:
case "cuda":
assert torch.cuda.is_available()
device = torch.device("cuda")
case "mps":
assert torch.backends.mps.is_available()
device = torch.device("mps")
case "cpu":
device = torch.device("cpu")
if log:
logging.warning("Using CPU, this will be slow.")
case _:
device = torch.device(cfg_device)
if log:
logging.warning(f"Using custom {cfg_device} device.")
return device
def get_global_random_state() -> dict[str, Any]:
"""Get the random state for `random`, `numpy`, and `torch`."""
random_state_dict = {
"random_state": random.getstate(),
"numpy_random_state": np.random.get_state(),
"torch_random_state": torch.random.get_rng_state(),
}
if torch.cuda.is_available():
random_state_dict["torch_cuda_random_state"] = torch.cuda.random.get_rng_state()
return random_state_dict
def set_global_random_state(random_state_dict: dict[str, Any]):
"""Set the random state for `random`, `numpy`, and `torch`.
Args:
random_state_dict: A dictionary of the form returned by `get_global_random_state`.
"""
random.setstate(random_state_dict["random_state"])
np.random.set_state(random_state_dict["numpy_random_state"])
torch.random.set_rng_state(random_state_dict["torch_random_state"])
if torch.cuda.is_available():
torch.cuda.random.set_rng_state(random_state_dict["torch_cuda_random_state"])
def set_global_seed(seed):
"""Set seed for reproducibility."""
random.seed(seed)
np.random.seed(seed)
torch.manual_seed(seed)
if torch.cuda.is_available():
torch.cuda.manual_seed_all(seed)
@contextmanager
def seeded_context(seed: int) -> Generator[None, None, None]:
"""Set the seed when entering a context, and restore the prior random state at exit.
Example usage:
```
a = random.random() # produces some random number
with seeded_context(1337):
b = random.random() # produces some other random number
c = random.random() # produces yet another random number, but the same it would have if we never made `b`
```
"""
random_state_dict = get_global_random_state()
set_global_seed(seed)
yield None
set_global_random_state(random_state_dict)
def init_logging():
def custom_format(record):
dt = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
fnameline = f"{record.pathname}:{record.lineno}"
message = f"{record.levelname} {dt} {fnameline[-15:]:>15} {record.msg}"
return message
logging.basicConfig(level=logging.INFO)
for handler in logging.root.handlers[:]:
logging.root.removeHandler(handler)
formatter = logging.Formatter()
formatter.format = custom_format
console_handler = logging.StreamHandler()
console_handler.setFormatter(formatter)
logging.getLogger().addHandler(console_handler)
def format_big_number(num, precision=0):
suffixes = ["", "K", "M", "B", "T", "Q"]
divisor = 1000.0
for suffix in suffixes:
if abs(num) < divisor:
return f"{num:.{precision}f}{suffix}"
num /= divisor
return num
def _relative_path_between(path1: Path, path2: Path) -> Path:
"""Returns path1 relative to path2."""
path1 = path1.absolute()
path2 = path2.absolute()
try:
return path1.relative_to(path2)
except ValueError: # most likely because path1 is not a subpath of path2
common_parts = Path(osp.commonpath([path1, path2])).parts
return Path(
"/".join([".."] * (len(path2.parts) - len(common_parts)) + list(path1.parts[len(common_parts) :]))
)
def init_hydra_config(config_path: str, overrides: list[str] | None = None) -> DictConfig:
"""Initialize a Hydra config given only the path to the relevant config file.
For config resolution, it is assumed that the config file's parent is the Hydra config dir.
"""
# TODO(alexander-soare): Resolve configs without Hydra initialization.
hydra.core.global_hydra.GlobalHydra.instance().clear()
# Hydra needs a path relative to this file.
hydra.initialize(
str(_relative_path_between(Path(config_path).absolute().parent, Path(__file__).absolute().parent)),
version_base="1.2",
)
cfg = hydra.compose(Path(config_path).stem, overrides)
return cfg
def print_cuda_memory_usage():
"""Use this function to locate and debug memory leak."""
import gc
gc.collect()
# Also clear the cache if you want to fully release the memory
torch.cuda.empty_cache()
print("Current GPU Memory Allocated: {:.2f} MB".format(torch.cuda.memory_allocated(0) / 1024**2))
print("Maximum GPU Memory Allocated: {:.2f} MB".format(torch.cuda.max_memory_allocated(0) / 1024**2))
print("Current GPU Memory Reserved: {:.2f} MB".format(torch.cuda.memory_reserved(0) / 1024**2))
print("Maximum GPU Memory Reserved: {:.2f} MB".format(torch.cuda.max_memory_reserved(0) / 1024**2))
def capture_timestamp_utc():
return datetime.now(timezone.utc)
|
lerobot/lerobot/common/utils/utils.py/0
|
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| 160
|
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|
lerobot/tests/data/lerobot/aloha_mobile_wash_pan/meta_data/stats.safetensors/0
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lerobot/tests/data/lerobot/aloha_sim_insertion_scripted/train/data-00000-of-00001.arrow/0
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lerobot/tests/data/lerobot/aloha_static_candy/meta_data/stats.safetensors/0
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lerobot/tests/data/lerobot/aloha_static_tape/meta_data/stats.safetensors/0
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lerobot/tests/data/lerobot/umi_cup_in_the_wild/train/data-00000-of-00001.arrow/0
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lerobot/tests/data/lerobot/xarm_push_medium/meta_data/stats.safetensors/0
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lerobot/tests/data/lerobot/xarm_push_medium_replay/train/state.json/0
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lerobot/tests/data/save_dataset_to_safetensors/lerobot/pusht/frame_159.safetensors/0
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lerobot/tests/data/save_policy_to_safetensors/aloha_act_1000_steps/actions.safetensors/0
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lerobot/tests/data/save_policy_to_safetensors/xarm_tdmpcuse_mpc/actions.safetensors/0
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| 171
|
#!/usr/bin/env python
# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# TODO(aliberts): Mute logging for these tests
import io
import subprocess
import sys
from pathlib import Path
from tests.utils import require_package
def _find_and_replace(text: str, finds_and_replaces: list[tuple[str, str]]) -> str:
for f, r in finds_and_replaces:
assert f in text
text = text.replace(f, r)
return text
def _run_script(path):
subprocess.run([sys.executable, path], check=True)
def _read_file(path):
with open(path) as file:
return file.read()
def test_example_1():
path = "examples/1_load_lerobot_dataset.py"
_run_script(path)
assert Path("outputs/examples/1_load_lerobot_dataset/episode_0.mp4").exists()
@require_package("gym_pusht")
def test_examples_basic2_basic3_advanced1():
"""
Train a model with example 3, check the outputs.
Evaluate the trained model with example 2, check the outputs.
Calculate the validation loss with advanced example 1, check the outputs.
"""
### Test example 3
file_contents = _read_file("examples/3_train_policy.py")
# Do fewer steps, use smaller batch, use CPU, and don't complicate things with dataloader workers.
file_contents = _find_and_replace(
file_contents,
[
("training_steps = 5000", "training_steps = 1"),
("num_workers=4", "num_workers=0"),
('device = torch.device("cuda")', 'device = torch.device("cpu")'),
("batch_size=64", "batch_size=1"),
],
)
# Pass empty globals to allow dictionary comprehension https://stackoverflow.com/a/32897127/4391249.
exec(file_contents, {})
for file_name in ["model.safetensors", "config.json"]:
assert Path(f"outputs/train/example_pusht_diffusion/{file_name}").exists()
### Test example 2
file_contents = _read_file("examples/2_evaluate_pretrained_policy.py")
# Do fewer evals, use CPU, and use the local model.
file_contents = _find_and_replace(
file_contents,
[
(
'pretrained_policy_path = Path(snapshot_download("lerobot/diffusion_pusht"))',
"",
),
(
'# pretrained_policy_path = Path("outputs/train/example_pusht_diffusion")',
'pretrained_policy_path = Path("outputs/train/example_pusht_diffusion")',
),
('device = torch.device("cuda")', 'device = torch.device("cpu")'),
("step += 1", "break"),
],
)
exec(file_contents, {})
assert Path("outputs/eval/example_pusht_diffusion/rollout.mp4").exists()
## Test example 4
file_contents = _read_file("examples/advanced/2_calculate_validation_loss.py")
# Run on a single example from the last episode, use CPU, and use the local model.
file_contents = _find_and_replace(
file_contents,
[
(
'pretrained_policy_path = Path(snapshot_download("lerobot/diffusion_pusht"))',
"",
),
(
'# pretrained_policy_path = Path("outputs/train/example_pusht_diffusion")',
'pretrained_policy_path = Path("outputs/train/example_pusht_diffusion")',
),
('split=f"train[{first_val_frame_index}:]"', 'split="train[30:]"'),
("num_workers=4", "num_workers=0"),
('device = torch.device("cuda")', 'device = torch.device("cpu")'),
("batch_size=64", "batch_size=1"),
],
)
# Capture the output of the script
output_buffer = io.StringIO()
sys.stdout = output_buffer
exec(file_contents, {})
printed_output = output_buffer.getvalue()
# Restore stdout to its original state
sys.stdout = sys.__stdout__
assert "Average loss on validation set" in printed_output
|
lerobot/tests/test_examples.py/0
|
{
"file_path": "lerobot/tests/test_examples.py",
"repo_id": "lerobot",
"token_count": 1791
}
| 172
|
import dac
from transformers import AutoConfig, AutoModel, EncodecFeatureExtractor
from parler_tts import DACConfig, DACModel
from transformers import AutoConfig, AutoModel
from transformers import EncodecFeatureExtractor
AutoConfig.register("dac", DACConfig)
AutoModel.register(DACConfig, DACModel)
# Download a model
model_path = dac.utils.download(model_type="44khz")
model = dac.DAC.load(model_path)
hf_dac = DACModel(DACConfig())
hf_dac.model.load_state_dict(model.state_dict())
hf_dac.push_to_hub("parler-tts/dac_44khZ_8kbps")
EncodecFeatureExtractor(sampling_rate=44100).push_to_hub("parler-tts/dac_44khZ_8kbps")
|
parler-tts/helpers/push_to_hub_scripts/push_dac_to_hub.py/0
|
{
"file_path": "parler-tts/helpers/push_to_hub_scripts/push_dac_to_hub.py",
"repo_id": "parler-tts",
"token_count": 229
}
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|
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# P-tuning
[P-tuning](https://hf.co/papers/2103.10385) adds trainable prompt embeddings to the input that is optimized by a prompt encoder to find a better prompt, eliminating the need to manually design prompts. The prompt tokens can be added anywhere in the input sequence, and p-tuning also introduces anchor tokens for improving performance.
The abstract from the paper is:
*While GPTs with traditional fine-tuning fail to achieve strong results on natural language understanding (NLU), we show that GPTs can be better than or comparable to similar-sized BERTs on NLU tasks with a novel method P-tuning -- which employs trainable continuous prompt embeddings. On the knowledge probing (LAMA) benchmark, the best GPT recovers 64\% (P@1) of world knowledge without any additional text provided during test time, which substantially improves the previous best by 20+ percentage points. On the SuperGlue benchmark, GPTs achieve comparable and sometimes better performance to similar-sized BERTs in supervised learning. Importantly, we find that P-tuning also improves BERTs' performance in both few-shot and supervised settings while largely reducing the need for prompt engineering. Consequently, P-tuning outperforms the state-of-the-art approaches on the few-shot SuperGlue benchmark.*.
## PromptEncoderConfig
[[autodoc]] tuners.p_tuning.config.PromptEncoderConfig
## PromptEncoder
[[autodoc]] tuners.p_tuning.model.PromptEncoder
|
peft/docs/source/package_reference/p_tuning.md/0
|
{
"file_path": "peft/docs/source/package_reference/p_tuning.md",
"repo_id": "peft",
"token_count": 540
}
| 174
|
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Fine-tuning for controllable generation with BOFT (ControlNet)
This guide demonstrates how to use BOFT, an orthogonal fine-tuning method, to fine-tune Stable Diffusion with either `stabilityai/stable-diffusion-2-1` or `runwayml/stable-diffusion-v1-5` model for controllable generation.
By using BOFT from 🤗 PEFT, we can significantly reduce the number of trainable parameters while still achieving impressive results in various fine-tuning tasks across different foundation models. BOFT enhances model efficiency by integrating full-rank orthogonal matrices with a butterfly structure into specific model blocks, such as attention blocks, mirroring the approach used in LoRA. During fine-tuning, only these inserted matrices are trained, leaving the original model parameters untouched. During inference, the trainable BOFT paramteres can be merged into the original model, eliminating any additional computational costs.
As a member of the **orthogonal finetuning** class, BOFT presents a systematic and principled method for fine-tuning. It possesses several unique properties and has demonstrated superior performance compared to LoRA in a variety of scenarios. For further details on BOFT, please consult the [PEFT's GitHub repo's concept guide OFT](https://https://huggingface.co/docs/peft/index), the [original BOFT paper](https://arxiv.org/abs/2311.06243) and the [original OFT paper](https://arxiv.org/abs/2306.07280).
In this guide we provide a controllable generation (ControlNet) fine-tuning script that is available in [PEFT's GitHub repo examples](https://github.com/huggingface/peft/tree/main/examples/boft_controlnet). This implementation is adapted from [diffusers's ControlNet](https://github.com/huggingface/diffusers/tree/main/examples/controlnet) and [Hecong Wu's ControlLoRA](https://github.com/HighCWu/ControlLoRA). You can try it out and finetune on your custom images.
## Set up your environment
Start by cloning the PEFT repository:
```bash
git clone https://github.com/huggingface/peft
```
Navigate to the directory containing the training scripts for fine-tuning Dreambooth with BOFT:
```bash
cd peft/examples/boft_controlnet
```
Set up your environment: install PEFT, and all the required libraries. At the time of writing this guide we recommend installing PEFT from source.
```bash
conda create --name peft python=3.10
conda activate peft
conda install pytorch==2.1.2 torchvision==0.16.2 torchaudio==2.1.2 pytorch-cuda=11.8 -c pytorch -c nvidia
conda install xformers -c xformers
pip install -r requirements.txt
pip install git+https://github.com/huggingface/peft
```
## Data
We use the [control-celeba-hq](https://huggingface.co/datasets/oftverse/control-celeba-hq) dataset for landmark-to-face controllable generation. We also provide evaluation scripts to evaluate the controllable generation performance. This task can be used to quantitatively compare different fine-tuning techniques.
```bash
export DATASET_NAME="oftverse/control-celeba-hq"
```
## Train controllable generation (ControlNet) with BOFT
Start with setting some hyperparamters for BOFT:
```bash
PEFT_TYPE="boft"
BLOCK_NUM=8
BLOCK_SIZE=0
N_BUTTERFLY_FACTOR=0
```
Here:
Navigate to the directory containing the training scripts for fine-tuning Stable Diffusion with BOFT for controllable generation:
```bash
./train_controlnet.sh
```
or
```bash
export MODEL_NAME="stabilityai/stable-diffusion-2-1"
# export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export DATASET_NAME="oftverse/control-celeba-hq"
export PROJECT_NAME="controlnet_${PEFT_TYPE}"
export RUN_NAME="${PEFT_TYPE}_${BLOCK_NUM}${BLOCK_SIZE}${N_BUTTERFLY_FACTOR}"
export CONTROLNET_PATH=""
export OUTPUT_DIR="./output/${DATASET_NAME}/${RUN_NAME}"
accelerate launch train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--resume_from_checkpoint=$RESUME_PATH \
--controlnet_model_name_or_path=$CONTROLNET_PATH \
--output_dir=$OUTPUT_DIR \
--report_to="wandb" \
--dataset_name=$DATASET_NAME \
--resolution=512 \
--learning_rate=1e-5 \
--checkpointing_steps=5000 \
--max_train_steps=50000 \
--validation_steps=2000 \
--num_validation_images=12 \
--train_batch_size=4 \
--dataloader_num_workers=2 \
--seed="0" \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--wandb_project_name=$PROJECT_NAME \
--wandb_run_name=$RUN_NAME \
--enable_xformers_memory_efficient_attention \
--use_boft \
--boft_block_num=$BLOCK_NUM \
--boft_block_size=$BLOCK_SIZE \
--boft_n_butterfly_factor=$N_BUTTERFLY_FACTOR \
--boft_dropout=0.1 \
--boft_bias="boft_only" \
--report_to="wandb" \
```
Run inference on the saved model to sample new images from the validation set:
```bash
./test_controlnet.sh
```
or
```bash
ITER_NUM=50000
export MODEL_NAME="stabilityai/stable-diffusion-2-1"
# export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export RUN_NAME="${PEFT_TYPE}_${BLOCK_NUM}${BLOCK_SIZE}${N_BUTTERFLY_FACTOR}"
export DATASET_NAME="oftverse/control-celeba-hq"
export CKPT_NAME="checkpoint-${ITER_NUM}"
export OUTPUT_DIR="./output/${DATASET_NAME}/${RUN_NAME}/${CKPT_NAME}"
export CONTROLNET_PATH="${OUTPUT_DIR}/controlnet/model.safetensors"
export UNET_PATH="${OUTPUT_DIR}/unet/${RUN_NAME}"
export RESULTS_PATH="${OUTPUT_DIR}/results"
accelerate launch test_controlnet.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--dataset_name=$DATASET_NAME \
--controlnet_path=$CONTROLNET_PATH \
--unet_path=$UNET_PATH \
--adapter_name=$RUN_NAME \
--output_dir=$RESULTS_PATH \
--dataset_name=$DATASET_NAME \
```
Run evaluation on the sampled images to evaluate the landmark reprojection error:
```bash
./eval.sh
```
or
```bash
ITER_NUM=50000
export MODEL_NAME="stabilityai/stable-diffusion-2-1"
# export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export RUN_NAME="${PEFT_TYPE}_${BLOCK_NUM}${BLOCK_SIZE}${N_BUTTERFLY_FACTOR}"
export DATASET_NAME="oftverse/control-celeba-hq"
export CKPT_NAME="checkpoint-${ITER_NUM}"
export OUTPUT_DIR="./output/${DATASET_NAME}/${RUN_NAME}/${CKPT_NAME}"
export CONTROLNET_PATH="${OUTPUT_DIR}/controlnet/model.safetensors"
export UNET_PATH="${OUTPUT_DIR}/unet/${RUN_NAME}"
accelerate launch eval.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--dataset_name=$DATASET_NAME \
--controlnet_path=$CONTROLNET_PATH \
--unet_path=$UNET_PATH \
--adapter_name=$RUN_NAME \
--output_dir=$OUTPUT_DIR \
--dataset_name=$DATASET_NAME \
--vis_overlays \
```
|
peft/examples/boft_controlnet/boft_controlnet.md/0
|
{
"file_path": "peft/examples/boft_controlnet/boft_controlnet.md",
"repo_id": "peft",
"token_count": 2426
}
| 175
|
# DoRA: Weight-Decomposed Low-Rank Adaptation
## Introduction
[DoRA](https://arxiv.org/abs/2402.09353) is a novel approach that leverages low rank adaptation through weight decomposition analysis to investigate the inherent differences between full fine-tuning and LoRA. DoRA initially decomposes the pretrained weight into its magnitude and directional components and finetunes both of them. Because the directional component is large in terms of parameter numbers, we further decompose it with LoRA for efficient finetuning. This results in enhancing both the learning capacity and training stability of LoRA while avoiding any additional inference overhead.
## Quick start
```python
import torch
from peft import LoraConfig, get_peft_model
from transformers import AutoTokenizer, AutoModelForCausalLM, Trainer
from datasets import load_dataset
model = AutoModelForCausalLM.from_pretrained("huggyllama/llama-7b", device_map="cuda")
tokenizer = AutoTokenizer.from_pretrained("huggyllama/llama-7b")
dataset = load_dataset("timdettmers/openassistant-guanaco", split="train")
lora_config = LoraConfig(
use_dora=True
)
peft_model = get_peft_model(model, lora_config)
trainer = transformers.Trainer(
model=peft_model,
train_dataset=dataset,
dataset_text_field="text",
max_seq_length=2048,
tokenizer=tokenizer,
)
trainer.train()
peft_model.save_pretrained("dora-llama-3-8b")
```
There is no additional change needed to your standard LoRA procedure, except for specifying `use_dora = True` option in your lora configuration.
Run the finetuning script simply by running:
```bash
python examples/dora_finetuning/dora_finetuning.py --base_model meta-llama/Meta-Llama-3-8B --data_path timdettmers/openassistant-guanaco
```
This 👆🏻 by default will load the model in peft set up with LoRA config. Now if you wanna quickly compare it with Dora, all you need to do is to input ` --use_dora` in the command line. So same above example would be 👇🏻;
```bash
python examples/dora_finetuning/dora_finetuning.py --base_model meta-llama/Meta-Llama-3-8B --data_path timdettmers/openassistant-guanaco --use_dora
```
DoRA also supports quantization. To use 4-bit quantization try:
```bash
python examples/dora_finetuning/dora_finetuning.py --base_model meta-llama/Meta-Llama-3-8B --quantize
```
Similarly, by default the LoRA layers are the attention and MLP layers of LLama model, if you get to choose a different set of layers for LoRA to be applied on, you can simply define it using:
```bash
python examples/dora_finetuning/dora_finetuning.py --lora_target_modules "q_proj,k_proj,v_proj,o_proj"
```
### Full example of the script
```bash
python dora_finetuning.py \
--base_model "PATH_TO_MODEL" \
--data_path "PATH_TO_DATASET" \
--output_dir "PATH_TO_OUTPUT_DIR" \
--batch_size 1 \
--num_epochs 3 \
--learning_rate 3e-4 \
--cutoff_len 512 \
--val_set_size 500 \
--use_dora \
--quantize \
--eval_step 10 \
--save_step 100 \
--device "cuda:0" \
--lora_r 16 \
--lora_alpha 32 \
--lora_dropout 0.05 \
--lora_target_modules "q_proj,k_proj,v_proj,o_proj" \
--hub_model_id "YOUR_HF_REPO" \
--push_to_hub
```
## Use the model on 🤗
You can load and use the model as any other 🤗 models.
```python
from transformers import AutoModel
model = AutoModel.from_pretrained("ShirinYamani/huggyllama-llama-7b-finetuned")
```
## DoRA vs. LoRA
In general, DoRA finetuning on diffusion models is still experimental and is likely to require different hyperparameter values to perform best compared to LoRA.
Specifically, people have noticed 2 differences to take into account in your training:
1. LoRA seem to converge faster than DoRA (so a set of parameters that may lead to overfitting when training a LoRA may be working well for a DoRA)
2. DoRA quality superior to LoRA especially in lower ranks: The difference in quality of DoRA of rank 8 and LoRA of rank 8 appears to be more significant than when training ranks of 32 or 64 for example.
## Citation
```
@article{liu2024dora,
title={DoRA: Weight-Decomposed Low-Rank Adaptation},
author={Liu, Shih-Yang and Wang, Chien-Yi and Yin, Hongxu and Molchanov, Pavlo and Wang, Yu-Chiang Frank and Cheng, Kwang-Ting and Chen, Min-Hung},
journal={arXiv preprint arXiv:2402.09353},
year={2024}
}
```
|
peft/examples/dora_finetuning/README.md/0
|
{
"file_path": "peft/examples/dora_finetuning/README.md",
"repo_id": "peft",
"token_count": 1500
}
| 176
|
import argparse
import os
from typing import Dict
import torch
from diffusers import UNet2DConditionModel
from safetensors.torch import save_file
from transformers import CLIPTextModel
from peft import PeftModel, get_peft_model_state_dict
# Default kohya_ss LoRA replacement modules
# https://github.com/kohya-ss/sd-scripts/blob/c924c47f374ac1b6e33e71f82948eb1853e2243f/networks/lora.py#L664
LORA_PREFIX_UNET = "lora_unet"
LORA_PREFIX_TEXT_ENCODER = "lora_te"
LORA_ADAPTER_NAME = "default"
def get_module_kohya_state_dict(
module: PeftModel, prefix: str, dtype: torch.dtype, adapter_name: str = LORA_ADAPTER_NAME
) -> Dict[str, torch.Tensor]:
kohya_ss_state_dict = {}
for peft_key, weight in get_peft_model_state_dict(module, adapter_name=adapter_name).items():
kohya_key = peft_key.replace("base_model.model", prefix)
kohya_key = kohya_key.replace("lora_A", "lora_down")
kohya_key = kohya_key.replace("lora_B", "lora_up")
kohya_key = kohya_key.replace(".", "_", kohya_key.count(".") - 2)
kohya_ss_state_dict[kohya_key] = weight.to(dtype)
# Set alpha parameter
if "lora_down" in kohya_key:
alpha_key = f'{kohya_key.split(".")[0]}.alpha'
kohya_ss_state_dict[alpha_key] = torch.tensor(module.peft_config[adapter_name].lora_alpha).to(dtype)
return kohya_ss_state_dict
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--sd_checkpoint",
default=None,
type=str,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models.",
)
parser.add_argument(
"--sd_checkpoint_revision",
type=str,
default=None,
required=False,
help="Revision of pretrained model identifier from huggingface.co/models.",
)
parser.add_argument("--peft_lora_path", default=None, type=str, required=True, help="Path to peft trained LoRA")
parser.add_argument(
"--dump_path",
default=None,
type=str,
required=True,
help="Path to the output safetensors file for use with webui.",
)
parser.add_argument("--half", action="store_true", help="Save weights in half precision.")
args = parser.parse_args()
# Store kohya_ss state dict
kohya_ss_state_dict = {}
dtype = torch.float16 if args.half else torch.float32
# Load Text Encoder LoRA model
text_encoder_peft_lora_path = os.path.join(args.peft_lora_path, "text_encoder")
if os.path.exists(text_encoder_peft_lora_path):
text_encoder = CLIPTextModel.from_pretrained(
args.sd_checkpoint, subfolder="text_encoder", revision=args.sd_checkpoint_revision
)
text_encoder = PeftModel.from_pretrained(
text_encoder, text_encoder_peft_lora_path, adapter_name=LORA_ADAPTER_NAME
)
kohya_ss_state_dict.update(
get_module_kohya_state_dict(text_encoder, LORA_PREFIX_TEXT_ENCODER, dtype, LORA_ADAPTER_NAME)
)
# Load UNet LoRA model
unet_peft_lora_path = os.path.join(args.peft_lora_path, "unet")
if os.path.exists(unet_peft_lora_path):
unet = UNet2DConditionModel.from_pretrained(
args.sd_checkpoint, subfolder="unet", revision=args.sd_checkpoint_revision
)
unet = PeftModel.from_pretrained(unet, unet_peft_lora_path, adapter_name=LORA_ADAPTER_NAME)
kohya_ss_state_dict.update(get_module_kohya_state_dict(unet, LORA_PREFIX_UNET, dtype, LORA_ADAPTER_NAME))
# Save state dict
save_file(
kohya_ss_state_dict,
args.dump_path,
)
|
peft/examples/lora_dreambooth/convert_peft_sd_lora_to_kohya_ss.py/0
|
{
"file_path": "peft/examples/lora_dreambooth/convert_peft_sd_lora_to_kohya_ss.py",
"repo_id": "peft",
"token_count": 1639
}
| 177
|
<jupyter_start><jupyter_code>%env CUDA_VISIBLE_DEVICES=0
%env TOKENIZERS_PARALLELISM=false<jupyter_output>env: CUDA_VISIBLE_DEVICES=0
env: TOKENIZERS_PARALLELISM=false<jupyter_text>Initialize PolyModel<jupyter_code>import torch
from transformers import (
AutoModelForSeq2SeqLM,
AutoTokenizer,
default_data_collator,
Seq2SeqTrainingArguments,
Seq2SeqTrainer,
)
from datasets import load_dataset, concatenate_datasets
from peft import PolyConfig, get_peft_model, TaskType, PeftModel, PeftConfig
model_name_or_path = "google/flan-t5-xl"
r = 8 # rank of lora in poly
n_tasks = 4 # number of tasks
n_skills = 2 # number of skills (loras)
n_splits = 4 # number of heads
batch_size = 8
lr = 5e-5
num_epochs = 8
tokenizer = AutoTokenizer.from_pretrained(model_name_or_path, trust_remote_code=True)
base_model = AutoModelForSeq2SeqLM.from_pretrained(model_name_or_path, trust_remote_code=True)
peft_config = PolyConfig(
task_type=TaskType.SEQ_2_SEQ_LM,
poly_type="poly",
r=r,
n_tasks=n_tasks,
n_skills=n_skills,
n_splits=n_splits,
)
model = get_peft_model(base_model, peft_config)
model.print_trainable_parameters()<jupyter_output>trainable params: 9,441,792 || all params: 2,859,198,976 || trainable%: 0.33022507629773296<jupyter_text>Prepare datasetsFor this example, we selected four `SuperGLUE` benchmark datasets: `boolq`, `multirc`, `rte`, and `wic`, each with a training set of 1,000 examples and an evaluation set of 100 examples.<jupyter_code># boolq
boolq_dataset = (
load_dataset("super_glue", "boolq")
.map(
lambda x: {
"input": f"{x['passage']}\nQuestion: {x['question']}\nA. Yes\nB. No\nAnswer:",
# 0 - False
# 1 - True
"output": ["B", "A"][int(x["label"])],
"task_name": "boolq",
}
)
.select_columns(["input", "output", "task_name"])
)
print("boolq example: ")
print(boolq_dataset["train"][0])
# multirc
multirc_dataset = (
load_dataset("super_glue", "multirc")
.map(
lambda x: {
"input": (
f"{x['paragraph']}\nQuestion: {x['question']}\nAnswer: {x['answer']}\nIs it"
" true?\nA. Yes\nB. No\nAnswer:"
),
# 0 - False
# 1 - True
"output": ["B", "A"][int(x["label"])],
"task_name": "multirc",
}
)
.select_columns(["input", "output", "task_name"])
)
print("multirc example: ")
print(multirc_dataset["train"][0])
# rte
rte_dataset = (
load_dataset("super_glue", "rte")
.map(
lambda x: {
"input": (
f"{x['premise']}\n{x['hypothesis']}\nIs the sentence below entailed by the"
" sentence above?\nA. Yes\nB. No\nAnswer:"
),
# 0 - entailment
# 1 - not_entailment
"output": ["A", "B"][int(x["label"])],
"task_name": "rte",
}
)
.select_columns(["input", "output", "task_name"])
)
print("rte example: ")
print(rte_dataset["train"][0])
# wic
wic_dataset = (
load_dataset("super_glue", "wic")
.map(
lambda x: {
"input": (
f"Sentence 1: {x['sentence1']}\nSentence 2: {x['sentence2']}\nAre '{x['word']}'"
" in the above two sentences the same?\nA. Yes\nB. No\nAnswer:"
),
# 0 - False
# 1 - True
"output": ["B", "A"][int(x["label"])],
"task_name": "wic",
}
)
.select_columns(["input", "output", "task_name"])
)
print("wic example: ")
print(wic_dataset["train"][0])
# define a task2id map
TASK2ID = {
"boolq": 0,
"multirc": 1,
"rte": 2,
"wic": 3,
}
def tokenize(examples):
inputs, targets = examples["input"], examples["output"]
features = tokenizer(inputs, max_length=512, padding="max_length", truncation=True, return_tensors="pt")
labels = tokenizer(targets, max_length=2, padding="max_length", truncation=True, return_tensors="pt")
labels = labels["input_ids"]
labels[labels == tokenizer.pad_token_id] = -100
features["labels"] = labels
features["task_ids"] = torch.tensor([[TASK2ID[t]] for t in examples["task_name"]]).long()
return features
def get_superglue_dataset(
split="train",
n_samples=500,
):
ds = concatenate_datasets(
[
boolq_dataset[split].shuffle().select(range(n_samples)),
multirc_dataset[split].shuffle().select(range(n_samples)),
rte_dataset[split].shuffle().select(range(n_samples)),
wic_dataset[split].shuffle().select(range(n_samples)),
]
)
ds = ds.map(
tokenize,
batched=True,
remove_columns=["input", "output", "task_name"],
load_from_cache_file=False,
)
return ds<jupyter_output><empty_output><jupyter_text>As a toy example, we only select 1,000 from each subdataset for training and 100 each for eval.<jupyter_code>superglue_train_dataset = get_superglue_dataset(split="train", n_samples=1000)
superglue_eval_dataset = get_superglue_dataset(split="test", n_samples=100)<jupyter_output>Map: 100%|██████████| 4000/4000 [00:02<00:00, 1365.07 examples/s]
Map: 100%|██████████| 400/400 [00:00<00:00, 548.46 examples/s]<jupyter_text>Train and evaluate<jupyter_code># training and evaluation
def compute_metrics(eval_preds):
preds, labels = eval_preds
preds = [[i for i in seq if i != -100] for seq in preds]
labels = [[i for i in seq if i != -100] for seq in labels]
preds = tokenizer.batch_decode(preds, skip_special_tokens=True)
labels = tokenizer.batch_decode(labels, skip_special_tokens=True)
correct = 0
total = 0
for pred, true in zip(preds, labels):
if pred.strip() == true.strip():
correct += 1
total += 1
accuracy = correct / total
return {"accuracy": accuracy}
training_args = Seq2SeqTrainingArguments(
"output",
per_device_train_batch_size=batch_size,
per_device_eval_batch_size=batch_size,
learning_rate=lr,
num_train_epochs=num_epochs,
evaluation_strategy="epoch",
logging_strategy="epoch",
save_strategy="no",
report_to=[],
predict_with_generate=True,
generation_max_length=2,
remove_unused_columns=False,
)
trainer = Seq2SeqTrainer(
model=model,
tokenizer=tokenizer,
args=training_args,
train_dataset=superglue_train_dataset,
eval_dataset=superglue_eval_dataset,
data_collator=default_data_collator,
compute_metrics=compute_metrics,
)
trainer.train()
# saving model
model_name_or_path = "google/flan-t5-xl"
peft_model_id = f"{model_name_or_path}_{peft_config.peft_type}_{peft_config.task_type}"
model.save_pretrained(peft_model_id)
!ls -lh $peft_model_id<jupyter_output>total 37M
-rw-r--r-- 1 root root 374 12月 22 14:59 adapter_config.json
-rw-r--r-- 1 root root 37M 12月 22 14:59 adapter_model.safetensors
-rw-r--r-- 1 root root 5.0K 12月 22 14:58 README.md<jupyter_text>Load and infer<jupyter_code>device = "cuda:0" if torch.cuda.is_available() else "cpu"
peft_model_id = f"{model_name_or_path}_{peft_config.peft_type}_{peft_config.task_type}"
config = PeftConfig.from_pretrained(peft_model_id)
model = AutoModelForSeq2SeqLM.from_pretrained(config.base_model_name_or_path)
model = PeftModel.from_pretrained(model, peft_model_id)
model = model.to(device)
model = model.eval()
i = 5
inputs = tokenizer(rte_dataset["validation"]["input"][i], return_tensors="pt")
inputs["task_ids"] = torch.LongTensor([TASK2ID["rte"]])
inputs = {k: v.to(device) for k, v in inputs.items()}
print(rte_dataset["validation"]["input"][i])
print(rte_dataset["validation"]["output"][i])
print(inputs)
with torch.no_grad():
outputs = model.generate(**inputs, max_new_tokens=2)
print(outputs[0])
print(tokenizer.batch_decode(outputs, skip_special_tokens=True)[0])<jupyter_output>In 1979, the leaders signed the Egypt-Israel peace treaty on the White House lawn. Both President Begin and Sadat received the Nobel Peace Prize for their work. The two nations have enjoyed peaceful relations to this day.
The Israel-Egypt Peace Agreement was signed in 1979.
Is the sentence below entailed by the sentence above?
A. Yes
B. No
Answer:
A
{'input_ids': tensor([[ 86, 15393, 6, 8, 2440, 3814, 8, 10438, 18, 30387,
3065, 2665, 63, 30, 8, 1945, 1384, 8652, 5, 2867,
1661, 10129, 77, 11, 18875, 144, 1204, 8, 22232, 11128,
11329, 21, 70, 161, 5, 37, 192, 9352, 43, 2994,
9257, 5836, 12, 48, 239, 5, 37, 3352, 18, 427,
122, 63, 102, 17, 11128, 7139, 47, 3814, 16, 15393,
5, 27, 7, 8, 7142, 666, 3, 295, 10990, 57,
8, 7142, 756, 58, 71, 5, 2163, 272, 5, 465,
[...]
|
peft/examples/poly/peft_poly_seq2seq_with_generate.ipynb/0
|
{
"file_path": "peft/examples/poly/peft_poly_seq2seq_with_generate.ipynb",
"repo_id": "peft",
"token_count": 4104
}
| 178
|
# X-LoRA examples
## `xlora_inference_mistralrs.py`
Perform inference of an X-LoRA model using the inference engine mistral.rs.
Mistral.rs supports many base models besides Mistral, and can load models directly from saved LoRA checkpoints. Check out [adapter model docs](https://github.com/EricLBuehler/mistral.rs/blob/master/docs/ADAPTER_MODELS.md) and the [models support matrix](https://github.com/EricLBuehler/mistral.rs?tab=readme-ov-file#support-matrix).
Mistral.rs features X-LoRA support and incorporates techniques such as a dual-KV cache, continuous batching, Paged Attention, and optional non granular scalings, will allow vastly improved throughput.
Links:
- Installation: https://github.com/EricLBuehler/mistral.rs/blob/master/mistralrs-pyo3/README.md
- Runnable example: https://github.com/EricLBuehler/mistral.rs/blob/master/examples/python/xlora_zephyr.py
- Adapter model docs and making the ordering file: https://github.com/EricLBuehler/mistral.rs/blob/master/docs/ADAPTER_MODELS.md
|
peft/examples/xlora/README.md/0
|
{
"file_path": "peft/examples/xlora/README.md",
"repo_id": "peft",
"token_count": 320
}
| 179
|
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