Issue with 50-Series Graphics Card Compatibility for xFormers

Bug

Hello, my environment is equipped with PyTorch 2.8 and CUDA 12.8. When I run pip3 install -U xformers --index-url https://download.pytorch.org/whl/cu128 with my 50-series graphics card, xFormers can be compiled and installed successfully. However, xFormers does not work during actual training—the error message indicates that the issue is kernel architecture incompatibility. I suspect if this precompiled package is only intended for H-series graphics cards?