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wuhuikai / FastFCN

FastFCN: Rethinking Dilated Convolution in the Backbone for Semantic Segmentation.
http://wuhuikai.me/FastFCNProject
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AttributeError: 'NoneType' object has no attribute 'run_slave' #59

Closed neverstoplearn closed 4 years ago

neverstoplearn commented 4 years ago

Traceback (most recent call last): File "train.py", line 180, in trainer.training(epoch) File "train.py", line 110, in training outputs = self.model(image) File "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in call result = self.forward(*input, kwargs) File "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/parallel/data_parallel.py", line 150, in forward return self.module(*inputs[0], *kwargs[0]) File "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in call result = self.forward(input, kwargs) File "../../encoding/models/deeplabv3.py", line 22, in forward , , c3, c4 = self.base_forward(x) File "../../encoding/models/base.py", line 55, in base_forward x = self.pretrained.conv1(x) File "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in call result = self.forward(*input, *kwargs) File "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/container.py", line 92, in forward input = module(input) File "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in call result = self.forward(input, **kwargs) File "../../encoding/nn/syncbn.py", line 58, in forward mean, inv_std = self._slave_pipe.run_slave(_ChildMessage(xsum, xsqsum, N)) AttributeError: 'NoneType' object has no attribute 'run_slave'

how can i fix it?

ucb-pb commented 4 years ago

what was the solution? Edit: Ok, I see this issue has been already raised by someone else.

wuhuikai commented 4 years ago

Please use multiple GPUs.