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szc19990412 / TransMIL

TransMIL: Transformer based Correlated Multiple Instance Learning for Whole Slide Image Classification
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AttributeError: 'NoneType' object has no attribute 'python_exit_status' #26

Open yuanzhang7 opened 1 year ago

yuanzhang7 commented 1 year ago

Hi，I met this error”AttributeError: 'NoneType' object has no attribute 'python_exit_status' ”when num_worker=8.Could you help me to solve this problem? BTW,when num_worker was set to 0,it alwasy trained for 17 epoches and then stopped no matter what number of epoch I set.

Here are the details for this error:

Traceback (most recent call last): File "train.py", line 92, in main(cfg) File "train.py", line 70, in main trainer.fit(model = model, datamodule = dm) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 514, in fit self.dispatch() File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 554, in dispatch self.accelerator.start_training(self) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/accelerators/accelerator.py", line 74, in start_training self.training_type_plugin.start_training(trainer) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/plugins/training_type/training_type_plugin.py", line 111, in start_training self._results = trainer.run_train() File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 645, in run_train self.train_loop.run_training_epoch() File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/training_loop.py", line 493, in run_training_epoch batch_output = self.run_training_batch(batch, batch_idx, dataloader_idx) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/training_loop.py", line 632, in run_training_batch split_batch, batch_idx, opt_idx, optimizer, self.trainer.hiddens File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/training_loop.py", line 743, in training_step_and_backward result = self.training_step(split_batch, batch_idx, opt_idx, hiddens) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/trainer/training_loop.py", line 293, in training_step training_step_output = self.trainer.accelerator.training_step(args) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/accelerators/accelerator.py", line 157, in training_step return self.training_type_plugin.training_step(args) File "/home/amax/.local/lib/python3.7/site-packages/pytorch_lightning/plugins/training_type/training_type_plugin.py", line 122, in training_step return self.lightning_module.training_step(args, kwargs) File "/data3/TransMIL-main/models/model_interface.py", line 81, in training_step results_dict = self.model(data=data, label=label) File "/opt/anaconda3/envs/zy/lib/python3.7/site-packages/torch/nn/modules/module.py", line 1130, in _call_impl return forward_call(*input, *kwargs) File "/data3/TransMIL-main/models/TransMIL.py", line 78, in forward h = self.layer1(h) #[B, N, 512] File "/opt/anaconda3/envs/zy/lib/python3.7/site-packages/torch/nn/modules/module.py", line 1130, in _call_impl return forward_call(input, kwargs) File "/data3/TransMIL-main/models/TransMIL.py", line 24, in forward x = x + self.attn(self.norm(x)) File "/opt/anaconda3/envs/zy/lib/python3.7/site-packages/torch/nn/modules/module.py", line 1130, in _call_impl return forward_call(*input, *kwargs) File "/home/amax/.local/lib/python3.7/site-packages/nystrom_attention/nystrom_attention.py", line 91, in forward q = self.scale RuntimeError: Output 0 of ReshapeAliasBackward0 is a view and is being modified inplace. This view is the output of a function that returns multiple views. Such functions do not allow the output views to be modified inplace. You should replace the inplace operation by an out-of-place one. Exception ignored in: <function _MultiProcessingDataLoaderIter.del at 0x7fcbce250b00> Traceback (most recent call last): File "/opt/anaconda3/envs/zy/lib/python3.7/site-packages/torch/utils/data/dataloader.py", line 1510, in del File "/opt/anaconda3/envs/zy/lib/python3.7/site-packages/torch/utils/data/dataloader.py", line 1435, in _shutdown_workers AttributeError: 'NoneType' object has no attribute 'python_exit_status'

lcxlcx commented 6 months ago

I have encountered the same problem, have you solved it?