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2022-10-12 09:57:02
    return self.strategy.launcher.launch(trainer_fn, *args, trainer=self, **kwargs)
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  File "/data/group1/z44543r/vae_separation/venv/lib/python3.8/site-packages/pytorch_lightning/strategies/launchers/multiprocessing.py", line 107, in launch
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    mp.start_processes(
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  File "/data/group1/z44543r/vae_separation/venv/lib/python3.8/site-packages/torch/multiprocessing/spawn.py", line 189, in start_processes
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    process.start()
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  File "/usr/lib/python3.8/multiprocessing/process.py", line 121, in start
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    self._popen = self._Popen(self)
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  File "/usr/lib/python3.8/multiprocessing/context.py", line 284, in _Popen
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    return Popen(process_obj)
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  File "/usr/lib/python3.8/multiprocessing/popen_spawn_posix.py", line 32, in __init__
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    super().__init__(process_obj)
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  File "/usr/lib/python3.8/multiprocessing/popen_fork.py", line 19, in __init__
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    self._launch(process_obj)
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  File "/usr/lib/python3.8/multiprocessing/popen_spawn_posix.py", line 47, in _launch
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    reduction.dump(process_obj, fp)
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  File "/usr/lib/python3.8/multiprocessing/reduction.py", line 60, in dump
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    ForkingPickler(file, protocol).dump(obj)
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AttributeError: Can't pickle local object 'TorchGraph.create_forward_hook.<locals>.after_forward_hook'