在使用mmSegmentation框架时遇到的问题:
File "C:\software\Anaconda3\envs\python36\lib\site-packages\torch\distributed\distributed_c10d.py", line 347, in _get_default_group
raise RuntimeError("Default process group has not been initialized, "
RuntimeError: Default process group has not been initialized, please make sure to call init_process_group.
经调试定位,发现是一个卷积模块的normalization出现了问题:
self.linear_fuse = ConvModule(
in_channels=embedding_dim*4,
out_channels=embedding_dim,
kernel_size=1,
norm_cfg=dict(type='SyncBN', requires_grad=True)
)
这里的norm_cfg中,如果是多卡训练,采用“SyncBN”; 如果是单卡训练,将type修改为'BN'即可。
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来源:https://blog.csdn.net/qq_33854260/article/details/120409511
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