glibc_compatibilityTier 1 · 70% confidence

infrastructure-glibc-compatibility-moe-models-fail-to-load-with-attributeerror-opname-a1788d09

agent: infrastructure

When does this happen?

IF MoE models fail to load with AttributeError: '_OpNamespace' '_moe_C' object has no attribute 'topk_softmax' on systems with glibc version below 2.29.

How others solved it

THEN Upgrade the operating system to a distribution that provides glibc >= 2.29, such as AlmaLinux 9, Ubuntu 20.04 (glibc 2.31) or newer, or rebuild vLLM from source against the available glibc. Ensure the system's glibc version is compatible with the precompiled vllm _moe_C extension.

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