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Apple MPS -> CPU NMS fallback strategy #9600

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Sep 26, 2022
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Apple MPS -> CPU NMS fallback strategy #9600

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2 changes: 2 additions & 0 deletions utils/general.py
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Original file line number Diff line number Diff line change
Expand Up @@ -843,6 +843,8 @@ def non_max_suppression(
if isinstance(prediction, (list, tuple)): # YOLOv5 model in validation model, output = (inference_out, loss_out)
prediction = prediction[0] # select only inference output

if 'mps' in prediction.device.type: # MPS not fully supported yet, convert tensors to CPU before NMS
prediction = prediction.cpu()
bs = prediction.shape[0] # batch size
nc = prediction.shape[2] - nm - 5 # number of classes
xc = prediction[..., 4] > conf_thres # candidates
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