[Bugfix][DBO] Run the profile run without DBO when DBO is enabled.

[SageMoore]

Purpose

Running the profile run with DBO effectively sets the max batch size to max_num_tokens // 2. If vllm bails out of DBO for any reason, it can end up in a situation where it's running with a batch size that is larger than max_num_tokens // 2. Deep EP v2 crashes in this case because an internal buffer wasn't sized correctly, but it's plausible that there is other undesirable behavior in the system when we encounter this scenario.

The fix is to run the profile run with DBO explicitly disabled.

Test Result

vllm serve deepseek-ai/DeepSeek-V2-Lite \
--data-parallel-size 2 \
--enable-expert-parallel \
--all2all-backend deepep_highthroughput \
--enable-dbo \
--dbo-decode-token-threshold 32 \
--dbo-prefill-token-threshold 32

lm_eval result

|Tasks|Version|     Filter     |n-shot|  Metric   |   |Value |   |Stderr|
|-----|------:|----------------|-----:|-----------|---|-----:|---|-----:|
|gsm8k|      3|flexible-extract|     5|exact_match|↑  |0.3798|±  |0.0134|
|     |       |strict-match    |     5|exact_match|↑  |0.3783|±  |0.0134|

[claude]

Claude Code Review

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