pytorch io_error ai_generated true

ValueError: optimizer state dict mismatch

ID: pytorch/optimizer-state-error

Also available as: JSON · Markdown
80%Fix Rate
84%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2 active — — —

Root Cause

Optimizer state dict doesnt match current model parameters.

generic

Workarounds

  1. 90% success Save and load model and optimizer together in checkpoint
  2. 88% success Verify model architecture matches before loading optimizer state

Dead Ends

Common approaches that don't work:

  1. Reset optimizer state 78% fail

    Loses momentum and learning rate schedule

  2. Ignore state dict errors 82% fail

    Corrupted optimizer state