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Fixing bug multi-gpu training #6299

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Jan 14, 2022
Merged

Fixing bug multi-gpu training #6299

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eb6601b
Fixing bug multi-gpu training
Jan 14, 2022
9ee92ed
Update torch_utils.py for pep8
Jan 14, 2022
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3 changes: 2 additions & 1 deletion utils/torch_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -62,7 +62,8 @@ def select_device(device='', batch_size=0, newline=True):
os.environ['CUDA_VISIBLE_DEVICES'] = '-1' # force torch.cuda.is_available() = False
elif device: # non-cpu device requested
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
device_list = [int(val) for val in device.replace(',', '')]
assert all([torch.cuda.device_count() > element for element in device_list]) , 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()
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