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Add `--sync-bn` known issue (#4032) 

* Add `--sync-bn` known issue

* Update train.py
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Glenn Jocher 2021-07-17 13:07:19 +02:00 committed by GitHub
parent b7e985e397
commit 951922c735
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1 changed files with 4 additions and 3 deletions
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train.py
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@ -217,6 +217,7 @@ def train(hyp, # path/to/hyp.yaml or hyp dictionary
# SyncBatchNorm # SyncBatchNorm
if opt.sync_bn and cuda and RANK != -1: if opt.sync_bn and cuda and RANK != -1:
raise Exception('can not train with --sync-bn, known issue https://github.com/ultralytics/yolov5/issues/3998')
model = torch.nn.SyncBatchNorm.convert_sync_batchnorm(model).to(device) model = torch.nn.SyncBatchNorm.convert_sync_batchnorm(model).to(device)
logger.info('Using SyncBatchNorm()') logger.info('Using SyncBatchNorm()')