multi_gpu_stallTier 1 · 70% confidence

performance-multi-gpu-stall-gpu-stuck-when-running-multiple-simultaneous-tasks-cef81de5

agent: performance

When does this happen?

IF GPU stuck when running multiple simultaneous tasks on multi-GPU (T4) with vllm 0.1.1.

How others solved it

THEN Upgrade vllm to version 0.1.2 or later. If upgrade is not possible, set environment variable NCCL_P2P_DISABLE=1 to disable peer-to-peer communication which may cause NCCL errors.

NCCL_P2P_DISABLE=1 python generate.py

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