run code have a mistakes on db = DataLoader(mini, args.task_num, shuffle=True, num_workers=1, pin_memory=True)

[hongshengxin]

Traceback (most recent call last):
File "", line 1, in
File "D:\ProgramData\Anaconda3\lib\multiprocessing\spawn.py", line 105, in spawn_main
exitcode = _main(fd)
File "D:\ProgramData\Anaconda3\lib\multiprocessing\spawn.py", line 115, in _main
self = reduction.pickle.load(from_parent)
EOFError: Ran out of input
Traceback (most recent call last):
File "D:\Program Files\JetBrains\PyCharm 2018.2.3\helpers\pydev\pydevd.py", line 1664, in
main()
File "D:\Program Files\JetBrains\PyCharm 2018.2.3\helpers\pydev\pydevd.py", line 1658, in main
globals = debugger.run(setup['file'], None, None, is_module)
File "D:\Program Files\JetBrains\PyCharm 2018.2.3\helpers\pydev\pydevd.py", line 1068, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "D:\Program Files\JetBrains\PyCharm 2018.2.3\helpers\pydev_pydev_imps_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "F:/NLP/meta-learning/MAML-Pytorch/miniimagenet_train.py", line 110, in
main()
File "F:/NLP/meta-learning/MAML-Pytorch/miniimagenet_train.py", line 68, in main
for step, item in enumerate(db):
File "D:\ProgramData\Anaconda3\lib\site-packages\torch\utils\data\dataloader.py", line 819, in iter
return _DataLoaderIter(self)
File "D:\ProgramData\Anaconda3\lib\site-packages\torch\utils\data\dataloader.py", line 560, in init
w.start()
File "D:\ProgramData\Anaconda3\lib\multiprocessing\process.py", line 105, in start
self._popen = self._Popen(self)
File "D:\ProgramData\Anaconda3\lib\multiprocessing\context.py", line 223, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "D:\ProgramData\Anaconda3\lib\multiprocessing\context.py", line 322, in _Popen
return Popen(process_obj)
File "D:\ProgramData\Anaconda3\lib\multiprocessing\popen_spawn_win32.py", line 65, in init
reduction.dump(process_obj, to_child)
File "D:\ProgramData\Anaconda3\lib\multiprocessing\reduction.py", line 60, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'MiniImagenet.init..'

[xiaofanque]

Hi, I have the same mistake, did you solve this?

[howyoungchen]

did you run it on windows?

[xiaofanque]

Yes

[asker-github]

I also have this problem. When num_ workers = 0, the code can run. I don't know if anyone knows a good solution.

[wangtianlei1998]

''Expected object of scalar type Long but got scalar type Float for argument #2 'target' in call to _thnn_nll_loss_forward''
I have this problem,I don't konw how to solve it?