facebookresearch/maskrcnn-benchmark

why only one gpu be used when I launch mutil gpu train?

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#325 ouverte le 8 janv. 2019

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❓ Questions and Help

when I launch multi gpu train use this command:

python -m torch.distributed.launch --nproc_per_node=2 /path_to_maskrcnn_benchmark/tools/train_net.py --config-file "path/to/config/file.yaml"

and it's run in docker container env, there are have two p40 in docker, but it seems that only one GPU is being used. image

and there are actually two processes running image

What could be the reason?

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