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torch-demo

推荐使用单卡训练 推荐在单机多卡上使用ddp,dp的优化问题较大,在某些服务器上由于传输带宽低,将严重制约性能

shell命令:

python -m torch.distributed.launch --nproc_per_node=8 cifar10_ddp.py

python -m torch.distributed.launch cifar10_ddp.py (在某些机器上可行)

最为完整的命令为:

python -m torch.distributed.launch --nproc_per_node=1 --nnodes=1 --node_rank=0 --master_addr="127.0.0.1" --master_port=1234 cifar10_ddp.py

参考:

https://fyubang.com/2019/07/23/distributed-training3/

https://blog.csdn.net/zwqjoy/article/details/89415933

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