TypeError: cannot pickle '_thread.lock' object

[HyperTwo]

I followed the instruction to run the example, I completed the following steps：

1. Use left-click for foreground annotation on the firts frame
2. Click the "commit to permanent memory" button
3. Click "Propagate forward"

then I got the error info below:

---

(cutie) PS E:\Cloneman\Cutie> python interactive_demo.py --video ./examples/example.mp4 --num_objects 1
Using device: cuda
Single object: False
Workspace is in: ./workspace\example
117 images found.
Exception ignored in: <function ResourceManager.del at 0x00000230E0A572E0>
Traceback (most recent call last):
Traceback (most recent call last):
File "E:\Cloneman\Cutie\gui\main_controller.py", line 272, in on_forward_propagation
File "E:\Cloneman\Cutie\gui\resource_manager.py", line 137, in del
for _ in range(self.num_save_threads):
self.on_propagate()
AttributeError: 'ResourceManager' object has no attribute 'num_save_threads'
File "E:\Cloneman\Cutie\gui\main_controller.py", line 315, in on_propagate
Traceback (most recent call last):
File "", line 1, in
for data in loader:
File "F:\SystemTools\miniconda3\envs\cutie\lib\site-packages\torch\utils\data\dataloader.py", line 438, in iter
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
return self._get_iterator()
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\spawn.py", line 126, in _main
File "F:\SystemTools\miniconda3\envs\cutie\lib\site-packages\torch\utils\data\dataloader.py", line 386, in _get_iterator
self = reduction.pickle.load(from_parent)
EOFError: Ran out of input
return _MultiProcessingDataLoaderIter(self)
File "F:\SystemTools\miniconda3\envs\cutie\lib\site-packages\torch\utils\data\dataloader.py", line 1039, in init
w.start()
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\process.py", line 121, in start
self._popen = self._Popen(self)
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\context.py", line 336, in _Popen
return Popen(process_obj)
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\popen_spawn_win32.py", line 93, in init
reduction.dump(process_obj, to_child)
File "F:\SystemTools\miniconda3\envs\cutie\lib\multiprocessing\reduction.py", line 60, in dump
ForkingPickler(file, protocol).dump(obj)
TypeError: cannot pickle '_thread.lock' object

---

Is there something wrong with my operation?

[hkchengrex]

This seems to be a WIndows specific problem. Let me see if I can fix it.

[HyperTwo]

OK, I try to run it under WSL

[hkchengrex]

I have pushed a fix for Windows that limits multiprocessing for dataloading. Linux system is still recommended as it will be faster.