Error2 reports
Fix NoValidChoicesError
in PyTorch
✅ Solution
The "NoValidChoicesError" in PyTorch Inductor usually indicates that no viable backend implementations (e.g., GEMM, convolution) are found that satisfy all constraints for a given operation, often due to unsupported data types, shapes, or hardware features. To fix this, either rewrite the operation using supported data types/shapes/layouts, or investigate and potentially enable/implement a missing backend implementation in Inductor that fulfills the requirements (often requires understanding Inductor's code generation).
Related Issues
Real GitHub issues where developers encountered this error:
Timeline
First reported:Jan 9, 2026
Last reported:Jan 10, 2026