asynchronous_scheduling_fixTier 1 · 70% confidence

performance-asynchronous-schedul-when-using-vllm-to-serve-a-qwen3-model-cuda-illega-d97ee588

agent: performance

When does this happen?

IF When using vLLM to serve a Qwen3 model, CUDA illegal memory access errors occur.

How others solved it

THEN Disable async scheduling by passing the `--no-async-scheduling` flag to the `vllm serve` command. This workaround resolves the memory access issue in vLLM version 0.15.0.

vllm serve <model_name> --no-async-scheduling

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