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DDP `nl` fix (#5332)

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Glenn Jocher 2021-10-25 16:03:39 +02:00 committed by GitHub
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train.py
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@ -246,7 +246,7 @@ def train(hyp, # path/to/hyp.yaml or hyp dictionary
model = DDP(model, device_ids=[LOCAL_RANK], output_device=LOCAL_RANK) model = DDP(model, device_ids=[LOCAL_RANK], output_device=LOCAL_RANK)
# Model parameters # Model parameters
nl = model.model[-1].nl # number of detection layers (to scale hyps) nl = de_parallel(model).model[-1].nl # number of detection layers (to scale hyps)
hyp['box'] *= 3. / nl # scale to layers hyp['box'] *= 3. / nl # scale to layers
hyp['cls'] *= nc / 80. * 3. / nl # scale to classes and layers hyp['cls'] *= nc / 80. * 3. / nl # scale to classes and layers
hyp['obj'] *= (imgsz / 640) ** 2 * 3. / nl # scale to image size and layers hyp['obj'] *= (imgsz / 640) ** 2 * 3. / nl # scale to image size and layers