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{
"device": "$torch.device(f'cuda:{dist.get_rank()}')",
"network": {
"_target_": "torch.nn.parallel.DistributedDataParallel",
"module": "$@network_def.to(@device)",
"device_ids": [
"@device"
]
},
"train#sampler": {
"_target_": "DistributedSampler",
"dataset": "@train#dataset",
"even_divisible": true,
"shuffle": true
},
"train#dataloader#sampler": "@train#sampler",
"train#dataloader#shuffle": false,
"train#trainer#train_handlers": "$@train#train_handlers[: -2 if dist.get_rank() > 0 else None]",
"validate#sampler": {
"_target_": "DistributedSampler",
"dataset": "@validate#dataset",
"even_divisible": false,
"shuffle": false
},
"validate#dataloader#sampler": "@validate#sampler",
"validate#evaluator#val_handlers": "$None if dist.get_rank() > 0 else @validate#handlers",
"training": [
"$import torch.distributed as dist",
"$dist.init_process_group(backend='nccl')",
"$torch.cuda.set_device(@device)",
"$monai.utils.set_determinism(seed=321)",
"$setattr(torch.backends.cudnn, 'benchmark', True)",
"$@train#trainer.run()",
"$dist.destroy_process_group()"
]
}
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