RuntimeError: cuda runtime error (801) : operation not supported at ..（百分百解决）

THCudaCheck FAIL file=..torch/csrc/generic/StorageSharing.cpp line=247 error=801 : operation not supported
Traceback (most recent call last):
  File "C:/Users/3i/Desktop/GaitSet/train.py", line 20, in 
    m.fit()
  File "C:Users3iDesktopGaitSetmodelmodel.py", line 151, in fit
    for seq, view, seq_type, label, batch_frame in train_loader:
  File "c:programdataanaconda3envsalphaposelibsite-packagestorchutilsdatadataloader.py", line 291, in __iter__
    return _MultiProcessingDataLoaderIter(self)
  File "c:programdataanaconda3envsalphaposelibsite-packagestorchutilsdatadataloader.py", line 737, in __init__
    w.start()
  File "C:ProgramDataAnaconda3envspytorchlibmultiprocessingprocess.py", line 105, in start
    self._popen = self._Popen(self)
  File "C:ProgramDataAnaconda3envspytorchlibmultiprocessingcontext.py", line 223, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "C:ProgramDataAnaconda3envspytorchlibmultiprocessingcontext.py", line 322, in _Popen
    return Popen(process_obj)
  File "C:ProgramDataAnaconda3envspytorchlibmultiprocessingpopen_spawn_win32.py", line 65, in __init__
    reduction.dump(process_obj, to_child)
  File "C:ProgramDataAnaconda3envspytorchlibmultiprocessingreduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
  File "c:programdataanaconda3envsalphaposelibsite-packagestorchmultiprocessingreductions.py", line 240, in reduce_tensor
    event_sync_required) = storage._share_cuda_()
RuntimeError: cuda runtime error (801) : operation not supported at ..torch/csrc/generic/StorageSharing.cpp:247

Process finished with exit code 1

https://github.com/fastai/fastbook/issues/85

简要：因为 Pytorch 多处理在 Windows 上不起作用, 设置 DataLoaders 的 num_workers=0