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@jeejeelee jeejeelee commented Jul 29, 2025

Essential Elements of an Effective PR Description Checklist

  • The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
  • The test plan, such as providing test command.
  • The test results, such as pasting the results comparison before and after, or e2e results
  • (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.

Purpose

FIX #21603

Test Plan

Test Result

(Optional) Documentation Update

Signed-off-by: Jee Jee Li <[email protected]>
@jeejeelee jeejeelee requested a review from youkaichao July 29, 2025 09:30
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Code Review

This pull request expands the supported hidden sizes for DeepEP low-latency kernels by adding 6144. While the code change is correct, it introduces new functionality without corresponding tests. I've left a high-severity comment recommending the addition of a test case to validate the new hidden size and ensure the stability of the system.

# DeepEP low-latency kernels are compiled only for certain
# specific hidden sizes.
SUPPORTED_HIDDEN_SIZES = [2048, 2560, 4096, 5120, 7168]
SUPPORTED_HIDDEN_SIZES = [2048, 2560, 4096, 5120, 6144, 7168]
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high

Adding 6144 to SUPPORTED_HIDDEN_SIZES enables this new configuration, but the pull request lacks corresponding tests to validate its functionality. The existing tests for low-latency DeepEP kernels in tests/kernels/moe/test_deepep_moe.py do not cover this new hidden size.

To ensure the correctness of the implementation for this new hidden size and to prevent future regressions, please add a test case for k=6144 to test_low_latency_deep_ep_moe. This will verify that the pre-compiled kernel for this size works as expected.

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@jeejeelee jeejeelee added the ready ONLY add when PR is ready to merge/full CI is needed label Jul 30, 2025
@vllm-bot vllm-bot merged commit 0f7919f into vllm-project:main Jul 31, 2025
65 of 69 checks passed
@jeejeelee jeejeelee deleted the add-deepep-hidden-size branch July 31, 2025 03:44
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[Bug]: DeepEP with Qwen3-Coder Fails

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