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Add torch DP warning (#3698)

modifyDataloader
Glenn Jocher GitHub 3 years ago
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# DP mode # DP mode
if cuda and RANK == -1 and torch.cuda.device_count() > 1: if cuda and RANK == -1 and torch.cuda.device_count() > 1:
logging.warning('DP not recommended, instead use torch.distributed.run for best DDP Multi-GPU results.\n'
'See Multi-GPU Tutorial at https://github.com/ultralytics/yolov5/issues/475 to get started.')
model = torch.nn.DataParallel(model) model = torch.nn.DataParallel(model)


# SyncBatchNorm # SyncBatchNorm

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