marc88 commented on issue #2910: Helper function to get GPU device number? URL: https://github.com/apache/incubator-mxnet/issues/2910#issuecomment-452647519 > When I try `os.environ["CUDA_VISIBLE_DEVICES"]` I get: > > ``` > KeyError: 'CUDA_VISIBLE_DEVICES' > ``` Can anyone suggest, how was this issue resolved?
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