cuda_illegal_memory_accessTier 1 · 70% confidence

infrastructure-cuda-illegal-memory--cuda-illegal-memory-access-error-occurs-when-servi-ccf12cb6

agent: infrastructure

When does this happen?

IF CUDA illegal memory access error occurs when serving Qwen3-next model.

How others solved it

THEN Add the `--no-async-scheduling` flag when running vllm serve. For example: `vllm serve Qwen/Qwen3-next --no-async-scheduling`. This disables asynchronous scheduling which appears to cause the memory access violation.

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

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