Fix NotImplementedError
in vLLM
✅ Solution
NotImplementedError in vllm usually arises when a requested feature or optimization, like a specific tensor compression method or hardware architecture support (e.g., FP8 on B200 with Flashinfer), hasn't been fully implemented in the vllm version you're using. To fix it, either update vllm to the latest version where the feature might be available, or choose a configuration that uses only implemented features and hardware (e.g., using a different tensor compression, disabling Flashinfer, or using a more broadly supported data type like FP16). If using a recent version, verify the specific feature is enabled or explicitly requested with the proper flags/arguments as demonstrated in the documentation.
Related Issues
Real GitHub issues where developers encountered this error: