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Fix device count check #6290

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Merged
merged 4 commits into from
Jan 14, 2022
Merged

Fix device count check #6290

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c0800f0
Fix device count check()
glenn-jocher Jan 14, 2022
c41fe6e
Update torch_utils.py
glenn-jocher Jan 14, 2022
09ca0bd
Update torch_utils.py
glenn-jocher Jan 14, 2022
1040846
Update hubconf.py
glenn-jocher Jan 14, 2022
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2 changes: 1 addition & 1 deletion hubconf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,7 @@ def _create(name, pretrained=True, channels=3, classes=80, autoshape=True, verbo

except Exception as e:
help_url = 'https://github.com/ultralytics/yolov5/issues/36'
s = 'Cache may be out of date, try `force_reload=True`. See %s for help.' % help_url
s = f'{e}. Cache may be out of date, try `force_reload=True` or see {help_url} for help.'
raise Exception(s) from e


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5 changes: 3 additions & 2 deletions utils/torch_utils.py
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Expand Up @@ -61,8 +61,9 @@ def select_device(device='', batch_size=0, newline=True):
if cpu:
os.environ['CUDA_VISIBLE_DEVICES'] = '-1' # force torch.cuda.is_available() = False
elif device: # non-cpu device requested
os.environ['CUDA_VISIBLE_DEVICES'] = device # set environment variable
assert torch.cuda.is_available(), f'CUDA unavailable, invalid device {device} requested' # check availability
assert torch.cuda.is_available(), 'CUDA unavailable' # check CUDA is available
assert torch.cuda.device_count() > int(device), f'invalid CUDA device {device} requested' # check index
os.environ['CUDA_VISIBLE_DEVICES'] = device # set environment variable (must be after asserts)

cuda = not cpu and torch.cuda.is_available()
if cuda:
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