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Added Windows cmd to count GPU devices #7891

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merged 2 commits into from
May 19, 2022
Merged

Added Windows cmd to count GPU devices #7891

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600b003
Added Windows cmd to count GPU devices
xylieong May 19, 2022
1a3aafc
Cleanup
glenn-jocher May 19, 2022
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8 changes: 6 additions & 2 deletions utils/torch_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -41,9 +41,13 @@ def torch_distributed_zero_first(local_rank: int):

def device_count():
# Returns number of CUDA devices available. Safe version of torch.cuda.device_count(). Only works on Linux.
assert platform.system() == 'Linux', 'device_count() function only works on Linux'
system_platform = platform.system()
assert system_platform == 'Linux' or 'Windows', 'device_count() function only works on Linux or Windows'
try:
cmd = 'nvidia-smi -L | wc -l'
if system_platform == 'Linux':
cmd = 'nvidia-smi -L | wc -l'
elif system_platform == 'Windows':
cmd = 'nvidia-smi -L | find /c /v ""'
return int(subprocess.run(cmd, shell=True, capture_output=True, check=True).stdout.decode().split()[-1])
except Exception:
return 0
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