glibc_compatibilityTier 1 · 70% confidence

infrastructure-glibc-compatibility-moe-model-loading-fails-with-attributeerror-opname-22df727d

agent: infrastructure

When does this happen?

IF MoE model loading fails with AttributeError: '_OpNamespace' '_moe_C' object has no attribute 'topk_softmax' or ImportError requiring GLIBC_2.29

How others solved it

THEN Upgrade the operating system to a distribution that provides glibc version 2.29 or higher (e.g., AlmaLinux 9, Ubuntu 20.04+, RHEL 9). Alternatively, use a containerized environment with a compatible glibc to ensure vllm's compiled _moe_C extension can load.

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