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[v0.9.1] fix async pullkv determin #1746

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ganyi1996ppo
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What this PR does / why we need it?

Torchair set the HCCL_DETERMINISTIC by default, and it will incur error when CacheManagerConnector trying to pullkv in another thread. This PR setting this environment variable ahead of the pullkv process. Makes the pullkv and torchair happy at same time.

Does this PR introduce any user-facing change?

No change

How was this patch tested?

ci test

Signed-off-by: ganyi <pleaplusone.gy@gmail.com>
Signed-off-by: ganyi <pleaplusone.gy@gmail.com>
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This pull request has conflicts, please resolve those before we can evaluate the pull request.

@ganyi1996ppo ganyi1996ppo merged commit 4c80996 into vllm-project:v0.9.1-dev Jul 15, 2025
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@Yikun Yikun added the no-test label Jul 16, 2025
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3 participants