Why is torch-1.10.0+cu113 much larger than torch-1.10.0

Ah, sorry, I misread your question. I think the difference might be that CUDA 11 will support more GPU architectures; there are corresponding kernels for the newer architectures with the newer CUDA version e.g.,

As far as the file split, I think that might be just an artifact of a tweak to the build process, but I’m not very knowledgeable on the details here.