pytorch type_error ai_generated true

RuntimeError: expected scalar type Float but found Half

ID: pytorch/dtype-mismatch

Also available as: JSON · Markdown
85%Fix Rate
88%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2 active — — —

Root Cause

Tensor dtype doesnt match operation or other tensor.

generic

Workarounds

  1. 92% success Explicitly cast: tensor.float() or tensor.to(torch.float32)
  2. 88% success Use torch.amp.autocast for mixed precision training

Dead Ends

Common approaches that don't work:

  1. Cast everything to float64 72% fail

    Doubles memory usage, slows training

  2. Disable autocast globally 70% fail

    Loses mixed precision benefits