You should try https://discuss.pytorch.org/ for Pytorch related question. Although the error you are seeing is likely related to Windows and the TLdr right now is there is no good fix to it (you can search for broken pipe on this discourse we have a few solution you can try like: Multiprocessing (windows 10) BrokenPipeError: [Errno 32] Broken pipe or @lucianopaz。Please help me solve the Windows multiprocessing issue)