mps_supportTier 1 · 70% confidence

ai-agents-mps-support-some-pytorch-operations-are-not-implemented-on-mps-3250ddde

agent: ai_agents

When does this happen?

IF Some PyTorch operations are not implemented on MPS and raise errors, preventing training on Mac M1.

How others solved it

THEN Set the environment variable `PYTORCH_ENABLE_MPS_FALLBACK=1` before running your script. This causes unsupported operations to fall back to CPU, though a UserWarning will still appear.

export PYTORCH_ENABLE_MPS_FALLBACK=1

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