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val.py --weights and --data compatibility check #7292

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Apr 5, 2022
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val.py --weights and --data compatibility check #7292

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4 changes: 4 additions & 0 deletions val.py
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Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,10 @@ def run(

# Dataloader
if not training:
if pt and not single_cls: # check --weights are trained on --data
ncm = model.model.yaml['nc']
assert ncm == nc, f'{weights[0]} ({ncm} classes) trained on different --data than what you passed ({nc} ' \
f'classes). Pass correct combination of --weights and --data that are trained together.'
model.warmup(imgsz=(1 if pt else batch_size, 3, imgsz, imgsz)) # warmup
pad = 0.0 if task in ('speed', 'benchmark') else 0.5
rect = False if task == 'benchmark' else pt # square inference for benchmarks
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