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python3 -m unittest test_skip_tokenizer_init.TestSkipTokenizerInit.test_parallel_sample
python3 -m unittest test_skip_tokenizer_init.TestSkipTokenizerInit.run_decode_stream
"""
import json
import unittest
import requests
from transformers import AutoProcessor, AutoTokenizer
from sglang.lang.chat_template import get_chat_template_by_model_path
from sglang.srt.utils import kill_process_tree
from sglang.test.ci.ci_register import register_amd_ci, register_cuda_ci
from sglang.test.test_utils import (
DEFAULT_IMAGE_URL,
DEFAULT_SMALL_MODEL_NAME_FOR_TEST,
DEFAULT_SMALL_VLM_MODEL_NAME_FOR_TEST,
DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
DEFAULT_URL_FOR_TEST,
CustomTestCase,
download_image_with_retry,
popen_launch_server,
)
register_cuda_ci(est_time=77, suite="stage-b-test-small-1-gpu")
register_amd_ci(est_time=117, suite="stage-b-test-small-1-gpu-amd")
class TestSkipTokenizerInit(CustomTestCase):
@classmethod
def setUpClass(cls):
cls.model = DEFAULT_SMALL_MODEL_NAME_FOR_TEST
cls.base_url = DEFAULT_URL_FOR_TEST
cls.process = popen_launch_server(
cls.model,
cls.base_url,
timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
other_args=["--skip-tokenizer-init", "--stream-output"],
)
cls.eos_token_id = [119690]
cls.tokenizer = AutoTokenizer.from_pretrained(
DEFAULT_SMALL_MODEL_NAME_FOR_TEST, use_fast=False
)
@classmethod
def tearDownClass(cls):
kill_process_tree(cls.process.pid)
def run_decode(
self,
prompt_text="The capital of France is",
max_new_tokens=32,
return_logprob=False,
top_logprobs_num=0,
n=1,
):
input_ids = self.get_input_ids(prompt_text)
request = self.get_request_json(
input_ids=input_ids,
return_logprob=return_logprob,
top_logprobs_num=top_logprobs_num,
max_new_tokens=max_new_tokens,
stream=False,
n=n,
)
response = requests.post(
self.base_url + "/generate",
json=request,
)
ret = response.json()
print(json.dumps(ret, indent=2))
def assert_one_item(item):
if item["meta_info"]["finish_reason"]["type"] == "stop":
self.assertEqual(
item["meta_info"]["finish_reason"]["matched"],
self.tokenizer.eos_token_id,
)
elif item["meta_info"]["finish_reason"]["type"] == "length":
self.assertEqual(
len(item["output_ids"]), item["meta_info"]["completion_tokens"]
)
self.assertEqual(len(item["output_ids"]), max_new_tokens)
self.assertEqual(item["meta_info"]["prompt_tokens"], len(input_ids))
if return_logprob:
num_input_logprobs = len(input_ids) - request["logprob_start_len"]
if num_input_logprobs > len(input_ids):
num_input_logprobs -= len(input_ids)
self.assertEqual(
len(item["meta_info"]["input_token_logprobs"]),
num_input_logprobs,
f'{len(item["meta_info"]["input_token_logprobs"])} mismatch with {len(input_ids)}',
)
self.assertEqual(
len(item["meta_info"]["output_token_logprobs"]),
max_new_tokens,
)
# Determine whether to assert a single item or multiple items based on n
if n == 1:
assert_one_item(ret)
else:
self.assertEqual(len(ret), n)
for i in range(n):
assert_one_item(ret[i])
print("=" * 100)
def run_decode_stream(self, return_logprob=False, top_logprobs_num=0, n=1):
max_new_tokens = 32
input_ids = self.get_input_ids("The capital of France is")
requests.post(self.base_url + "/flush_cache")
response = requests.post(
self.base_url + "/generate",
json=self.get_request_json(
input_ids=input_ids,
max_new_tokens=max_new_tokens,
return_logprob=return_logprob,
top_logprobs_num=top_logprobs_num,
stream=False,
n=n,
),
)
ret = response.json()
print(json.dumps(ret))
output_ids = ret["output_ids"]
print("output from non-streaming request:")
print(output_ids)
print(self.tokenizer.decode(output_ids, skip_special_tokens=True))
requests.post(self.base_url + "/flush_cache")
response_stream = requests.post(
self.base_url + "/generate",
json=self.get_request_json(
input_ids=input_ids,
return_logprob=return_logprob,
top_logprobs_num=top_logprobs_num,
stream=True,
n=n,
),
)
response_stream_json = []
for line in response_stream.iter_lines():
print(line)
if line.startswith(b"data: ") and line[6:] != b"[DONE]":
response_stream_json.append(json.loads(line[6:]))
out_stream_ids = []
for x in response_stream_json:
out_stream_ids += x["output_ids"]
print("output from streaming request:")
print(out_stream_ids)
print(self.tokenizer.decode(out_stream_ids, skip_special_tokens=True))
assert output_ids == out_stream_ids
def test_simple_decode(self):
self.run_decode()
def test_parallel_sample(self):
self.run_decode(n=3)
def test_logprob(self):
for top_logprobs_num in [0, 3]:
self.run_decode(return_logprob=True, top_logprobs_num=top_logprobs_num)
def test_eos_behavior(self):
self.run_decode(max_new_tokens=256)
def test_simple_decode_stream(self):
self.run_decode_stream()
def get_input_ids(self, prompt_text) -> list[int]:
input_ids = self.tokenizer(prompt_text, return_tensors="pt")["input_ids"][
0
].tolist()
return input_ids
def get_request_json(
self,
input_ids,
max_new_tokens=32,
return_logprob=False,
top_logprobs_num=0,
stream=False,
n=1,
):
return {
"input_ids": input_ids,
"sampling_params": {
"temperature": 0 if n == 1 else 0.5,
"max_new_tokens": max_new_tokens,
"n": n,
"stop_token_ids": self.eos_token_id,
},
"stream": stream,
"return_logprob": return_logprob,
"top_logprobs_num": top_logprobs_num,
"logprob_start_len": 0,
}
class TestSkipTokenizerInitVLM(TestSkipTokenizerInit):
@classmethod
def setUpClass(cls):
cls.image_url = DEFAULT_IMAGE_URL
cls.image = download_image_with_retry(cls.image_url)
cls.model = DEFAULT_SMALL_VLM_MODEL_NAME_FOR_TEST
cls.tokenizer = AutoTokenizer.from_pretrained(cls.model, use_fast=False)
cls.processor = AutoProcessor.from_pretrained(cls.model, trust_remote_code=True)
cls.base_url = DEFAULT_URL_FOR_TEST
cls.process = popen_launch_server(
cls.model,
cls.base_url,
timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
other_args=["--skip-tokenizer-init"],
)
cls.eos_token_id = [cls.tokenizer.eos_token_id]
def get_input_ids(self, _prompt_text) -> list[int]:
chat_template = get_chat_template_by_model_path(self.model)
text = f"{chat_template.image_token}What is in this picture?"
inputs = self.processor(
text=[text],
images=[self.image],
return_tensors="pt",
)
return inputs.input_ids[0].tolist()
def get_request_json(self, *args, **kwargs):
ret = super().get_request_json(*args, **kwargs)
ret["image_data"] = [self.image_url]
ret["logprob_start_len"] = (
-1
) # Do not try to calculate logprobs of image embeddings.
return ret
def test_simple_decode_stream(self):
# TODO mick
pass
if __name__ == "__main__":
unittest.main()
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