75fae619d5
### What this PR does / why we need it?
Replace text-match assertions with a two-tier logprob accuracy check:
- Prefill (token 0): assert token ID is identical between eager baseline
and compiled mode, then verify logprob matches within `atol`.
- Decode (tokens 1-2): if chosen tokens match, compare logprobs
directly; if they differ, cross-lookup the baseline token in the
compiled model's top-20 distribution and assert the assigned logprob is
within `decode_atol` (defaults to 2x atol). This tolerates minor argmax
drift caused by floating-point differences while still catching
distribution divergence.
### Does this PR introduce _any_ user-facing change?
### How was this patch tested?
- vLLM version: v0.17.0
- vLLM main:
8a680463fa
---------
Signed-off-by: wangli <wangli858794774@gmail.com>
66 lines
2.0 KiB
Python
66 lines
2.0 KiB
Python
#
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# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
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# Copyright 2023 The vLLM team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""
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Compare the outputs of vLLM with and without xlite via logprob-based accuracy
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check (3 tokens: 1 prefill + 2 decode).
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Run `pytest tests/e2e/singlecard/test_xlite.py`.
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"""
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# ruff: noqa: E501
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import os
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import pytest
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from tests.e2e.singlecard.utils import PROMPTS_SHORT, LLMTestCase, compare_logprobs
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os.environ["VLLM_ASCEND_ENABLE_NZ"] = "2"
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CASE_DECODE_ONLY = LLMTestCase(
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model="Qwen/Qwen3-0.6B",
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prompts=PROMPTS_SHORT,
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)
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CASE_FULL = LLMTestCase(
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model="Qwen/Qwen3-0.6B",
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prompts=PROMPTS_SHORT,
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)
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@pytest.mark.skip(reason="TODO: Re-enable xlite_decode_only e2e test when stable.")
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@pytest.mark.parametrize("cur_case", [CASE_DECODE_ONLY])
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def test_models_with_xlite_decode_only(cur_case: LLMTestCase):
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runner_kwargs = {
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"model_name": cur_case.model,
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"max_model_len": 1024,
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"block_size": 128,
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"additional_config": {"xlite_graph_config": {"enabled": True}},
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}
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compare_logprobs(runner_kwargs=runner_kwargs, prompts=cur_case.prompts)
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@pytest.mark.parametrize("cur_case", [CASE_FULL])
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def test_models_with_xlite_full_mode(cur_case: LLMTestCase):
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runner_kwargs = {
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"model_name": cur_case.model,
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"max_model_len": 1024,
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"block_size": 128,
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"additional_config": {"xlite_graph_config": {"enabled": True, "full_mode": True}},
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}
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compare_logprobs(runner_kwargs=runner_kwargs, prompts=cur_case.prompts)
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