Error3 reports
Fix RuntimeError
in PyTorch
✅ Solution
RuntimeError in PyTorch often arises when operations encounter invalid input values or conditions during execution, particularly in compiled or optimized code paths like those generated by `torch.compile`. To fix this, add explicit input validation checks (e.g., using `torch.clamp` or assertions) before the problematic operation to ensure data falls within the expected range or satisfies required conditions. If the error occurs due to fake tensor propagation, ensure that all necessary operators are defined for the custom tensor type when tracing.
Related Issues
Real GitHub issues where developers encountered this error:
`torch.compile` silently accepts negative standard deviations in `torch.normal` that eager mode rejectsMay 26, 2026
torch.compile silently accepts invalid Bernoulli probabilities that eager mode rejectsMay 26, 2026
[Dynamo] torchvision.io functions raise "RuntimeError when making fake tensor call" instead of graph breakingMay 25, 2026
Timeline
First reported:May 25, 2026
Last reported:May 26, 2026