Unverified 提交 951922c7 authored 作者: Glenn Jocher's avatar Glenn Jocher 提交者: GitHub

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

* Add `--sync-bn` known issue * Update train.py
上级 b7e985e3
......@@ -217,6 +217,7 @@ def train(hyp, # path/to/hyp.yaml or hyp dictionary
# SyncBatchNorm
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)
logger.info('Using SyncBatchNorm()')
......@@ -232,9 +233,9 @@ def train(hyp, # path/to/hyp.yaml or hyp dictionary
# Process 0
if RANK in [-1, 0]:
valloader = create_dataloader(val_path, imgsz_val, batch_size // WORLD_SIZE * 2, gs, single_cls,
hyp=hyp, cache=opt.cache_images and not noval, rect=True, rank=-1,
workers=workers,
pad=0.5, prefix=colorstr('val: '))[0]
hyp=hyp, cache=opt.cache_images and not noval, rect=True, rank=-1,
workers=workers,
pad=0.5, prefix=colorstr('val: '))[0]
if not resume:
labels = np.concatenate(dataset.labels, 0)
......
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