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# SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
#
# 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 operator
from ._common import default_net
from .logger import logger
class Module(object):
def __init__(self) -> None:
self._modules = {}
self._parameters = {}
self._network_outputs = {}
def forward(self, *args, **kwargs):
raise NotImplementedError
def __call__(self, *args, **kwargs):
current_net = default_net()
if not current_net._module_call_stack.module_names_set():
logger.debug("Initializing top level module")
current_net._module_call_stack.set_module_names(self)
unique_name = current_net._module_call_stack.get_mod_name(self)
with current_net._module_call_stack.call_stack_mgr() as stack:
stack.append(unique_name)
start_layer_idx = current_net.trt_network.num_layers
output = self.forward(*args, **kwargs)
end_layer_idx = current_net.trt_network.num_layers
current_net._module_call_stack.set_layer_range(
self, range(start_layer_idx, end_layer_idx))
return output
def __getattr__(self, name):
parameters = self.__dict__.get('_parameters')
if parameters is not None and name in parameters:
return parameters[name]
modules = self.__dict__.get('_modules')
if modules is not None and name in modules:
return modules[name]
raise AttributeError("'{}' object has no attribute '{}'".format(
type(self).__name__, name))
def __setattr__(self, name, value) -> None:
from .parameter import Parameter
# Improved module setattr to handle one edge case:
# attribute could be first set to None and later reset to Parameter / Module class
try:
super().__getattribute__(name)
except AttributeError:
# if base class doesn't have the attribute, no matter we init or reset:
# - keep Parameter and Module attrs in this Module class
# - leave all other attrs in base class
if isinstance(value, Parameter):
self.__dict__.get('_parameters')[name] = value
elif isinstance(value, Module):
self.__dict__.get('_modules')[name] = value
else:
super().__setattr__(name, value)
else:
# if base class has the attribute, reset as follows:
# - when reset as Parameter or Module attr, remove from base & add to this Module class
# - other types reset and remain in base class
if isinstance(value, Parameter):
super().__delattr__(name)
self.__dict__.get('_parameters')[name] = value
elif isinstance(value, Module):
super().__delattr__(name)
self.__dict__.get('_modules')[name] = value
else:
super().__setattr__(name, value)
def named_modules(self, memo=None, prefix='', remove_duplicate=True):
if memo is None:
memo = set()
if self not in memo:
if remove_duplicate:
memo.add(self)
yield prefix, self
for name, module in self._modules.items():
if module is None:
continue
submodule_prefix = prefix + ('.' if prefix else '') + name
for m in module.named_modules(memo, submodule_prefix,
remove_duplicate):
yield m
def named_modules_with_parent(self,
memo=None,
prefix='',
parent=None,
remove_duplicate=True):
if memo is None:
memo = set()
if self not in memo:
if remove_duplicate:
memo.add(self)
yield prefix, self, parent
for name, module in self._modules.items():
if module is None:
continue
submodule_prefix = prefix + ('.' if prefix else '') + name
for m in module.named_modules_with_parent(
memo, submodule_prefix, self, remove_duplicate):
yield m
def named_children(self):
memo = set()
for name, module in self._modules.items():
if module is not None and module not in memo:
memo.add(module)
yield name, module
def _named_members(self, get_members_fn, prefix='', recurse=True):
memo = set()
modules = self.named_modules(prefix=prefix) if recurse else [(prefix,
self)]
for module_prefix, module in modules:
members = get_members_fn(module)
for k, v in members:
if v is None or v in memo:
continue
memo.add(v)
name = module_prefix + ('.' if module_prefix else '') + k
yield name, v
def parameters(self, recurse=True):
for name, param in self.named_parameters():
yield param
def named_parameters(self, prefix='', recurse=True):
gen = self._named_members(lambda module: module._parameters.items(),
prefix=prefix,
recurse=recurse)
for elem in gen:
yield elem
def children(self):
for _, module in self.named_children():
yield module
def apply(self, fn):
for module in self.children():
module.apply(fn)
fn(self)
return self
def _get_name(self):
return self.__class__.__name__
def register_parameter(self, name, param):
if param is None:
self._parameters[name] = None
else:
self._parameters[name] = param
def register_network_output(self, name, value):
self._network_outputs[name] = value
def named_network_outputs(self):
for name, module in self.named_modules():
for n, output in module._network_outputs.items():
yield name + ('.' if name else '') + n, output
def update_parameters(self, torch_module):
m = {k: v for k, v in self.named_parameters()}
tm = {k: v for k, v in torch_module.named_parameters()}
assert sorted(m.keys()) == sorted(
tm.keys()
), 'The parameter names of the tensorrt-llm module must be the same with the torch module'
for k, v in self.named_parameters():
v.value = tm[k].detach().cpu().numpy()
class ModuleList(Module):
def __init__(self, modules) -> None:
super(ModuleList, self).__init__()
offset = len(self)
for i, module in enumerate(modules):
self._modules[str(offset + i)] = module
def _get_abs_string_index(self, idx):
"""Get the absolute index for the list of modules"""
idx = operator.index(idx)
if not (-len(self) <= idx < len(self)):
raise IndexError('index {} is out of range'.format(idx))
if idx < 0:
idx += len(self)
return str(idx)
def __getitem__(self, idx):
if isinstance(idx, slice):
return self.__class__(list(self._modules.values())[idx])
else:
return self._modules[self._get_abs_string_index(idx)]
def __setitem__(self, idx, module) -> None:
idx = self._get_abs_string_index(idx)
return setattr(self, str(idx), module)
def __len__(self):
return len(self._modules)
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