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[Core] Dynamic image size support for VLMs (#5276)

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Signed-off-by: Xiaowei Jiang <xwjiang2010@gmail.com>
Co-authored-by: Xiaowei Jiang <xwjiang2010@gmail.com>
Co-authored-by: ywang96 <ywang@roblox.com>
Co-authored-by: xwjiang2010 <87673679+xwjiang2010@users.noreply.github.com>
Co-authored-by: Roger Wang <136131678+ywang96@users.noreply.github.com>
This commit is contained in:
Cyrus Leung
2024-07-03 11:34:00 +08:00
committed by GitHub
parent 482045ee77
commit 9831aec49f
38 changed files with 1453 additions and 664 deletions
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104
tests/models/test_llava.py
View File

@@ -4,18 +4,21 @@ import pytest
from transformers import AutoTokenizer
from vllm.config import VisionLanguageConfig
from vllm.multimodal.utils import rescale_image_size
from vllm.sequence import SampleLogprobs
from ..conftest import IMAGE_ASSETS, HfRunner, VllmRunner, _ImageAssets
from .utils import check_outputs_equal
from .utils import check_logprobs_close
pytestmark = pytest.mark.vlm
# The image token is placed before "user" on purpose so that the test can pass
HF_IMAGE_PROMPTS = IMAGE_ASSETS.prompts({
"stop_sign":
"<image>\nUSER: What's the content of the image?\nASSISTANT:",
"USER: <image>\nWhat's the content of the image?\nASSISTANT:",
"cherry_blossom":
"<image>\nUSER: What is the season?\nASSISTANT:",
"USER: <image>\nWhat is the season?\nASSISTANT:",
"boardwalk":
"USER: <image>\nWhat's in this image?\nASSISTANT:",
})
@@ -37,27 +40,34 @@ model_and_vl_config = [
]
def vllm_to_hf_output(vllm_output: Tuple[List[int], str],
def vllm_to_hf_output(vllm_output: Tuple[List[int], str,
Optional[SampleLogprobs]],
vlm_config: VisionLanguageConfig, model_id: str):
"""Sanitize vllm output to be comparable with hf output.
The function reduces `input_ids` from 1, 32000, 32000, ..., 32000,
x1, x2, x3 ... to 1, 32000, x1, x2, x3 ...
It also reduces `output_str` from "<image><image>bla" to "bla".
"""
output_ids, output_str = vllm_output
output_ids, output_str, out_logprobs = vllm_output
image_token_id = vlm_config.image_token_id
tokenizer = AutoTokenizer.from_pretrained(model_id)
image_token_str = tokenizer.decode(image_token_id)
eos_token_id = tokenizer.eos_token_id
hf_output_ids = [
token_id for idx, token_id in enumerate(output_ids)
if token_id != image_token_id or output_ids[idx - 1] != image_token_id
]
hf_output_str = output_str \
.replace(image_token_str * vlm_config.image_feature_size, "")
assert hf_output_str[0] == " "
hf_output_str = hf_output_str[1:]
if hf_output_ids[-1] == eos_token_id:
hf_output_str = hf_output_str + tokenizer.decode(eos_token_id)
return hf_output_ids, hf_output_str
return hf_output_ids, hf_output_str, out_logprobs
def run_test(
@@ -66,8 +76,10 @@ def run_test(
image_assets: _ImageAssets,
model_and_config: Tuple[str, VisionLanguageConfig],
*,
size_factors: List[float],
dtype: str,
max_tokens: int,
num_logprobs: int,
tensor_parallel_size: int,
distributed_executor_backend: Optional[str] = None,
):
@@ -81,61 +93,85 @@ def run_test(
The text output is sanitized to be able to compare with hf.
"""
model_id, vlm_config = model_and_config
hf_images = [asset.for_hf() for asset in image_assets]
images = [asset.pil_image for asset in image_assets]
inputs_per_image = [(
[prompt for _ in size_factors],
[rescale_image_size(image, factor) for factor in size_factors],
) for image, prompt in zip(images, HF_IMAGE_PROMPTS)]
# NOTE: take care of the order. run vLLM first, and then run HF.
# vLLM needs a fresh new process without cuda initialization.
# if we run HF first, the cuda initialization will be done and it
# will hurt multiprocessing backend with fork method (the default method).
# max_model_len should be greater than image_feature_size
with vllm_runner(model_id,
dtype=dtype,
tensor_parallel_size=tensor_parallel_size,
distributed_executor_backend=distributed_executor_backend,
enforce_eager=True,
**vlm_config.as_cli_args_dict()) as vllm_model:
# NOTE: `asset.for_vllm` will call `torch.cuda.device_count()`
# we must put it inside the vllm_runner context manager
# i.e. after creating vLLM instance.
vllm_images = [asset.for_vllm() for asset in image_assets]
vllm_image_prompts = [
p.replace("<image>", "<image>" * vlm_config.image_feature_size)
for p in HF_IMAGE_PROMPTS
vllm_outputs_per_image = [
vllm_model.generate_greedy_logprobs(prompts,
max_tokens,
num_logprobs=num_logprobs,
images=images)
for prompts, images in inputs_per_image
]
vllm_outputs = vllm_model.generate_greedy(vllm_image_prompts,
max_tokens,
images=vllm_images)
with hf_runner(model_id, dtype=dtype, is_vision_model=True) as hf_model:
hf_outputs = hf_model.generate_greedy(HF_IMAGE_PROMPTS,
max_tokens,
images=hf_images)
hf_outputs_per_image = [
hf_model.generate_greedy_logprobs_limit(prompts,
max_tokens,
num_logprobs=num_logprobs,
images=images)
for prompts, images in inputs_per_image
]
check_outputs_equal(
hf_outputs,
[
vllm_to_hf_output(vllm_output, vlm_config, model_id)
for vllm_output in vllm_outputs
],
name_0="hf",
name_1="vllm",
)
for hf_outputs, vllm_outputs in zip(hf_outputs_per_image,
vllm_outputs_per_image):
# TODO: Check whether using original CLIPVisionModel can improve
# consistency against HF
check_logprobs_close(
outputs_0_lst=hf_outputs,
outputs_1_lst=[
vllm_to_hf_output(vllm_output, vlm_config, model_id)
for vllm_output in vllm_outputs
],
name_0="hf",
name_1="vllm",
)
@pytest.mark.parametrize("model_and_config", model_and_vl_config)
@pytest.mark.parametrize(
"size_factors",
[
# No image
[],
# Single-scale
[1.0],
# Single-scale, batched
[1.0, 1.0, 1.0],
# Multi-scale
[0.25, 0.5, 1.0],
],
)
@pytest.mark.parametrize("dtype", ["half"])
@pytest.mark.parametrize("max_tokens", [128])
@pytest.mark.parametrize("num_logprobs", [5])
def test_models(hf_runner, vllm_runner, image_assets, model_and_config,
dtype: str, max_tokens: int) -> None:
size_factors, dtype: str, max_tokens: int,
num_logprobs: int) -> None:
run_test(
hf_runner,
vllm_runner,
image_assets,
model_and_config,
size_factors=size_factors,
dtype=dtype,
max_tokens=max_tokens,
num_logprobs=num_logprobs,
tensor_parallel_size=1,
)

127
tests/models/test_llava_next.py
View File

@@ -1,12 +1,15 @@
from typing import List, Tuple
import re
from typing import List, Optional, Tuple
import pytest
from transformers import AutoTokenizer
from vllm.config import VisionLanguageConfig
from vllm.multimodal.utils import rescale_image_size
from vllm.sequence import SampleLogprobs
from ..conftest import IMAGE_ASSETS
from .utils import check_outputs_equal
from .utils import check_logprobs_close
pytestmark = pytest.mark.vlm
@@ -15,21 +18,20 @@ _PREFACE = (
"The assistant gives helpful, detailed, and polite answers to the human's "
"questions.")
# The image token is placed before "user" on purpose so that the test can pass
HF_IMAGE_PROMPTS = IMAGE_ASSETS.prompts({
"stop_sign":
f"{_PREFACE} <image>\nUSER: What's the content of the image?\nASSISTANT:",
f"{_PREFACE} USER: <image>\nWhat's the content of the image? ASSISTANT:",
"cherry_blossom":
f"{_PREFACE} <image>\nUSER: What is the season?\nASSISTANT:",
f"{_PREFACE} USER: <image>\nWhat is the season? ASSISTANT:",
"boardwalk":
f"{_PREFACE} USER: <image>\nWhat's in this image? ASSISTANT:",
})
def iter_llava_next_configs(model_name: str):
# Need to use the max possible feature size for profile_run
image_hw_to_feature_size = {
(336, 336): 1176,
(672, 672): 2928,
(1344, 336): 1944,
(336, 1344): 1890,
(336, 336): 2928,
}
for (h, w), f in image_hw_to_feature_size.items():
@@ -47,37 +49,55 @@ model_and_vl_config = [
]
def vllm_to_hf_output(vllm_output: Tuple[List[int], str],
def vllm_to_hf_output(vllm_output: Tuple[List[int], str,
Optional[SampleLogprobs]],
vlm_config: VisionLanguageConfig, model_id: str):
"""Sanitize vllm output to be comparable with hf output.
The function reduces `input_ids` from 1, 32000, 32000, ..., 32000,
x1, x2, x3 ... to 1, 32000, x1, x2, x3 ...
It also reduces `output_str` from "<image><image>bla" to "bla".
"""
output_ids, output_str = vllm_output
output_ids, output_str, out_logprobs = vllm_output
image_token_id = vlm_config.image_token_id
tokenizer = AutoTokenizer.from_pretrained(model_id)
image_token_str = tokenizer.decode(image_token_id)
eos_token_id = tokenizer.eos_token_id
hf_output_ids = [
token_id for idx, token_id in enumerate(output_ids)
if token_id != image_token_id or output_ids[idx - 1] != image_token_id
]
hf_output_str = output_str \
.replace(image_token_str * vlm_config.image_feature_size, " ")
return hf_output_ids, hf_output_str
hf_output_str = re.sub(fr"({image_token_str})+", "", output_str)
assert hf_output_str[0] == " "
hf_output_str = hf_output_str[1:]
if hf_output_ids[-1] == eos_token_id:
hf_output_str = hf_output_str + tokenizer.decode(eos_token_id)
return hf_output_ids, hf_output_str, out_logprobs
@pytest.mark.xfail(
reason="Inconsistent image processor being used due to lack "
"of support for dynamic image token replacement")
@pytest.mark.parametrize("model_and_config", model_and_vl_config)
@pytest.mark.parametrize(
"size_factors",
[
# No image
[],
# Single-scale
[1.0],
# Single-scale, batched
[1.0, 1.0, 1.0],
# Multi-scale
[0.25, 0.5, 1.0],
],
)
@pytest.mark.parametrize("dtype", ["half"])
@pytest.mark.parametrize("max_tokens", [128])
@pytest.mark.parametrize("num_logprobs", [5])
def test_models(hf_runner, vllm_runner, image_assets, model_and_config,
dtype: str, max_tokens: int) -> None:
size_factors, dtype: str, max_tokens: int,
num_logprobs: int) -> None:
"""Inference result should be the same between hf and vllm.
All the image fixtures for the test is under tests/images.
@@ -88,37 +108,46 @@ def test_models(hf_runner, vllm_runner, image_assets, model_and_config,
The text output is sanitized to be able to compare with hf.
"""
model_id, vlm_config = model_and_config
hf_images = [asset.for_hf() for asset in image_assets]
vllm_images = [asset.for_vllm() for asset in image_assets]
images = [asset.pil_image for asset in image_assets]
inputs_per_image = [(
[prompt for _ in size_factors],
[rescale_image_size(image, factor) for factor in size_factors],
) for image, prompt in zip(images, HF_IMAGE_PROMPTS)]
# max_model_len should be greater than image_feature_size
with vllm_runner(model_id,
dtype=dtype,
max_model_len=4096,
enforce_eager=True,
**vlm_config.as_cli_args_dict()) as vllm_model:
vllm_outputs_per_image = [
vllm_model.generate_greedy_logprobs(prompts,
max_tokens,
num_logprobs=num_logprobs,
images=images)
for prompts, images in inputs_per_image
]
with hf_runner(model_id, dtype=dtype, is_vision_model=True) as hf_model:
hf_outputs = hf_model.generate_greedy(HF_IMAGE_PROMPTS,
max_tokens,
images=hf_images)
hf_outputs_per_image = [
hf_model.generate_greedy_logprobs_limit(prompts,
max_tokens,
num_logprobs=num_logprobs,
images=images)
for prompts, images in inputs_per_image
]
vllm_image_prompts = [
p.replace("<image>", "<image>" * vlm_config.image_feature_size)
for p in HF_IMAGE_PROMPTS
]
with vllm_runner(
model_id,
dtype=dtype,
# should be greater than image_feature_size
max_model_len=4096,
enforce_eager=True,
**vlm_config.as_cli_args_dict(),
) as vllm_model:
vllm_outputs = vllm_model.generate_greedy(vllm_image_prompts,
max_tokens,
images=vllm_images)
check_outputs_equal(
hf_outputs,
[
vllm_to_hf_output(vllm_output, vlm_config, model_id)
for vllm_output in vllm_outputs
],
name_0="hf",
name_1="vllm",
)
for hf_outputs, vllm_outputs in zip(hf_outputs_per_image,
vllm_outputs_per_image):
# TODO: Check whether using original CLIPVisionModel can improve
# consistency against HF
check_logprobs_close(
outputs_0_lst=hf_outputs,
outputs_1_lst=[
vllm_to_hf_output(vllm_output, vlm_config, model_id)
for vllm_output in vllm_outputs
],
name_0="hf",
name_1="vllm",
)

134
tests/models/test_phi3v.py
View File

@@ -1,29 +1,33 @@
import re
from typing import List, Optional, Tuple, Type
import pytest
from transformers import AutoTokenizer
from vllm.config import VisionLanguageConfig
from vllm.multimodal.utils import rescale_image_size
from vllm.sequence import SampleLogprobs
from vllm.utils import is_cpu
from ..conftest import IMAGE_ASSETS, HfRunner, VllmRunner, _ImageAssets
from .utils import check_outputs_equal
from .utils import check_logprobs_close
pytestmark = pytest.mark.vlm
# The image token is placed before "user" on purpose so that the test can pass
HF_IMAGE_PROMPTS = IMAGE_ASSETS.prompts({
"stop_sign":
"<|user|>\n<|image_1|>\nWhat's the content of the image?<|end|>\n<|assistant|>\n", # noqa: E501
"cherry_blossom":
"<|user|>\n<|image_1|>\nWhat is the season?<|end|>\n<|assistant|>\n", # noqa: E501
"<|user|>\n<|image_1|>\nWhat is the season?<|end|>\n<|assistant|>\n",
"boardwalk":
"<|user|>\n<|image_1|>\nWhat's in this image?<|end|>\n<|assistant|>\n",
})
def iter_phi3v_configs(model_name: str):
# Need to use the max possible feature size for profile_run
image_hw_to_feature_size = {
(1008, 1344): 1921,
(2016, 2688): 1933,
(1008, 1344): 2653,
}
for (h, w), f in image_hw_to_feature_size.items():
@@ -39,29 +43,29 @@ model_and_vl_config = [
]
def vllm_to_hf_output(vllm_output: Tuple[List[int], str],
def vllm_to_hf_output(vllm_output: Tuple[List[int], str,
Optional[SampleLogprobs]],
vlm_config: VisionLanguageConfig, model_id: str):
"""Sanitize vllm output to be comparable with hf output.
The function reduces `input_ids` from 1, 32000, 32000, ..., 32000,
x1, x2, x3 ... to 1, 32000, x1, x2, x3 ...
It also reduces `output_str` from "<image><image>bla" to "bla".
"""
output_ids, output_str = vllm_output
image_token_id = vlm_config.image_token_id
output_ids, output_str, out_logprobs = vllm_output
tokenizer = AutoTokenizer.from_pretrained(model_id)
image_token_str = tokenizer.decode(image_token_id)
output_str_without_image = re.sub(r"(<\|image_\d+\|>)+", "", output_str)
assert output_str_without_image[0] == " "
output_str_without_image = output_str_without_image[1:]
hf_output_ids = [
token_id if token_id != image_token_id else 0
for idx, token_id in enumerate(output_ids)
]
hf_output_str = output_str \
.replace(image_token_str * vlm_config.image_feature_size, "") \
.replace("<s>", " ").replace("<|user|>", "") \
hf_output_str = output_str_without_image.replace("<|user|>", "") \
.replace("<|end|>\n<|assistant|>", " ")
return hf_output_ids, hf_output_str
tokenizer = AutoTokenizer.from_pretrained(model_id)
hf_output_ids = tokenizer.encode(output_str_without_image)
assert hf_output_ids[0] == 1
hf_output_ids = hf_output_ids[1:]
return hf_output_ids, hf_output_str, out_logprobs
target_dtype = "half"
@@ -75,8 +79,10 @@ def run_test(
image_assets: _ImageAssets,
model_and_config: Tuple[str, VisionLanguageConfig],
*,
size_factors: List[float],
dtype: str,
max_tokens: int,
num_logprobs: int,
tensor_parallel_size: int,
distributed_executor_backend: Optional[str] = None,
):
@@ -90,73 +96,91 @@ def run_test(
The text output is sanitized to be able to compare with hf.
"""
model_id, vlm_config = model_and_config
hf_images = [asset.for_hf() for asset in image_assets]
images = [asset.pil_image for asset in image_assets]
inputs_per_image = [(
[prompt for _ in size_factors],
[rescale_image_size(image, factor) for factor in size_factors],
) for image, prompt in zip(images, HF_IMAGE_PROMPTS)]
# NOTE: take care of the order. run vLLM first, and then run HF.
# vLLM needs a fresh new process without cuda initialization.
# if we run HF first, the cuda initialization will be done and it
# will hurt multiprocessing backend with fork method (the default method).
# max_model_len should be greater than image_feature_size
with vllm_runner(model_id,
max_model_len=2048,
max_model_len=4096,
dtype=dtype,
tensor_parallel_size=tensor_parallel_size,
enforce_eager=True,
distributed_executor_backend=distributed_executor_backend,
enforce_eager=True,
**vlm_config.as_cli_args_dict()) as vllm_model:
# NOTE: `asset.for_vllm` will call `torch.cuda.device_count()`
# we must put it inside the vllm_runner context manager
# i.e. after creating vLLM instance.
vllm_images = [asset.for_vllm() for asset in image_assets]
vllm_image_prompts = [
p.replace("<|image_1|>",
"<|image|>" * vlm_config.image_feature_size + "<s>")
for p in HF_IMAGE_PROMPTS
vllm_outputs_per_image = [
vllm_model.generate_greedy_logprobs(prompts,
max_tokens,
num_logprobs=num_logprobs,
images=vllm_images)
for prompts, vllm_images in inputs_per_image
]
vllm_outputs = vllm_model.generate_greedy(vllm_image_prompts,
max_tokens,
images=vllm_images)
# use eager mode for hf runner, since phi3_v didn't work with flash_attn
hf_model_kwargs = {"_attn_implementation": "eager"}
with hf_runner(model_id, dtype=dtype,
model_kwargs=hf_model_kwargs) as hf_model:
hf_outputs = hf_model.generate_greedy(
HF_IMAGE_PROMPTS,
max_tokens,
images=hf_images,
eos_token_id=hf_model.processor.tokenizer.eos_token_id)
eos_token_id = hf_model.processor.tokenizer.eos_token_id
hf_outputs_per_image = [
hf_model.generate_greedy_logprobs_limit(prompts,
max_tokens,
num_logprobs=num_logprobs,
images=hf_images,
eos_token_id=eos_token_id)
for prompts, hf_images in inputs_per_image
]
check_outputs_equal(
hf_outputs,
[
vllm_to_hf_output(vllm_output, vlm_config, model_id)
for vllm_output in vllm_outputs
],
name_0="hf",
name_1="vllm",
)
for hf_outputs, vllm_outputs in zip(hf_outputs_per_image,
vllm_outputs_per_image):
check_logprobs_close(
outputs_0_lst=hf_outputs,
outputs_1_lst=[
vllm_to_hf_output(vllm_output, vlm_config, model_id)
for vllm_output in vllm_outputs
],
name_0="hf",
name_1="vllm",
)
# Since we use _attn_implementation="eager" for hf_runner, here is
# numeric difference for longer context and test can't pass
@pytest.mark.xfail(
reason="Inconsistent image processor being used due to lack "
"of support for dynamic image token replacement")
# Since we use _attn_implementation="eager" for hf_runner, there is more
# significant numerical difference. The basic `logprobs=5` fails to pass.
@pytest.mark.parametrize("model_and_config", model_and_vl_config)
@pytest.mark.parametrize(
"size_factors",
[
# No image
[],
# Single-scale
[1.0],
# Single-scale, batched
[1.0, 1.0, 1.0],
# Multi-scale
[0.25, 0.5, 1.0],
],
)
@pytest.mark.parametrize("dtype", [target_dtype])
@pytest.mark.parametrize("max_tokens", [128])
@pytest.mark.parametrize("num_logprobs", [10])
def test_models(hf_runner, vllm_runner, image_assets, model_and_config,
dtype: str, max_tokens: int) -> None:
size_factors, dtype: str, max_tokens: int,
num_logprobs: int) -> None:
run_test(
hf_runner,
vllm_runner,
image_assets,
model_and_config,
size_factors=size_factors,
dtype=dtype,
max_tokens=max_tokens,
num_logprobs=num_logprobs,
tensor_parallel_size=1,
)

88
tests/models/utils.py
View File

@@ -1,11 +1,18 @@
from typing import Dict, List, Tuple
import warnings
from typing import Dict, List, Optional, Sequence, Tuple, Union
from vllm.sequence import SampleLogprobs
TokensText = Tuple[List[int], str]
def check_outputs_equal(outputs_0_lst: List[TokensText],
outputs_1_lst: List[TokensText], name_0: str,
name_1: str):
def check_outputs_equal(
*,
outputs_0_lst: Sequence[TokensText],
outputs_1_lst: Sequence[TokensText],
name_0: str,
name_1: str,
):
"""
Compare the two sequences generated by different models,
which should be equal.
@@ -18,20 +25,28 @@ def check_outputs_equal(outputs_0_lst: List[TokensText],
output_ids_0, output_str_0 = outputs_0
output_ids_1, output_str_1 = outputs_1
assert output_str_0 == output_str_1, (f"Test{prompt_idx}:"
f"\n{name_0}:\t{output_str_0!r}"
f"\n{name_1}:\t{output_str_1!r}")
assert output_ids_0 == output_ids_1, (f"Test{prompt_idx}:"
f"\n{name_0}:\t{output_str_0!r}"
f"\n{name_1}:\t{output_str_1!r}")
# The text and token outputs should exactly match
fail_msg = (f"Test{prompt_idx}:"
f"\n{name_0}:\t{output_str_0!r}"
f"\n{name_1}:\t{output_str_1!r}")
assert output_str_0 == output_str_1, fail_msg
assert output_ids_0 == output_ids_1, fail_msg
TokensTextLogprobs = Tuple[List[int], str, List[Dict[int, float]]]
TokensTextLogprobs = Tuple[List[int], str, Optional[Union[List[Dict[int,
float]],
SampleLogprobs]]]
def check_logprobs_close(outputs_0_lst: List[TokensTextLogprobs],
outputs_1_lst: List[TokensTextLogprobs], name_0: str,
name_1: str):
def check_logprobs_close(
*,
outputs_0_lst: Sequence[TokensTextLogprobs],
outputs_1_lst: Sequence[TokensTextLogprobs],
name_0: str,
name_1: str,
warn_on_mismatch: bool = True,
):
"""
Compare the logprobs of two sequences generated by different models,
which should be similar but not necessarily equal.
@@ -45,21 +60,52 @@ def check_logprobs_close(outputs_0_lst: List[TokensTextLogprobs],
output_ids_0, output_str_0, logprobs_0 = outputs_0
output_ids_1, output_str_1, logprobs_1 = outputs_1
if logprobs_0 is None:
logprobs_0 = [None] * len(output_ids_0)
if logprobs_1 is None:
logprobs_1 = [None] * len(output_ids_1)
# Loop through generated tokens.
for idx, (output_id_0,
output_id_1) in enumerate(zip(output_ids_0, output_ids_1)):
# If generated tokens don't match, then
if output_id_0 != output_id_1:
logprobs_elem_0 = logprobs_0[idx]
logprobs_elem_1 = logprobs_1[idx]
# Each predicted token must be in top N logprobs of the other
assert output_id_0 in logprobs_1[idx], (
fail_msg = (
f"Test{prompt_idx}:"
f"\n{name_0}:\t{output_str_0!r}"
f"\n{name_1}:\t{output_str_1!r}")
assert output_id_1 in logprobs_0[idx], (
f"Test{prompt_idx}:"
f"\n{name_0}:\t{output_str_0!r}"
f"\n{name_1}:\t{output_str_1!r}")
f"\n{name_0}:\t{output_str_0!r}\t{logprobs_elem_0}"
f"\n{name_1}:\t{output_str_1!r}\t{logprobs_elem_1}")
assert logprobs_elem_0 is not None, fail_msg
assert logprobs_elem_1 is not None, fail_msg
assert output_id_0 in logprobs_elem_1, fail_msg
assert output_id_1 in logprobs_elem_0, fail_msg
if warn_on_mismatch:
with warnings.catch_warnings():
# This ensures that repeated warnings are shown
# in the output, not just the first occurrence
warnings.simplefilter("always")
warnings.warn(fail_msg, stacklevel=2)
# Break out since sequences will now diverge.
break
else:
if output_str_0 != output_str_1 and warn_on_mismatch:
# The token outputs exactly match,
# so the text outputs should exactly match as well
fail_msg = (f"Test{prompt_idx}:"
f"\n{name_0}:\t{output_str_0!r}"
f"\n{name_1}:\t{output_str_1!r}")
with warnings.catch_warnings():
# This ensures that repeated warnings are shown
# in the output, not just the first occurrence
warnings.simplefilter("always")
warnings.warn(fail_msg, stacklevel=2)