[GitHub] feevos commented on issue #2910: Helper function to get GPU device number?

[GitBox]

feevos commented on issue #2910: Helper function to get GPU device number?
URL: 
https://github.com/apache/incubator-mxnet/issues/2910#issuecomment-372536394
 
 
   @kenfehling  I get the same error when I run this command on my laptop 
(single GPU) but not on the HPC cluster. Somehow the key  
```'CUDA_VISIBLE_DEVICES'``` in the ```os.environ``` dictionary is missing from 
my laptop. 
   
   When I use (CSIRO - BRACEWELL HPC facility - 4 GPUs per Node) 
```os.environ["CUDA_VISIBLE_DEVICES"]``` I get ```'0,1,2,3'```


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[GitHub] feevos commented on issue #2910: Helper function to get GPU device number?

[GitBox]

feevos commented on issue #2910: Helper function to get GPU device number?
URL: 
https://github.com/apache/incubator-mxnet/issues/2910#issuecomment-356160135
 
 
   This works for me getting the list of gpus available on a particular node 
(on hpc facility, slurm environment, python/2.7.13). 
   
   ```Python
   import mx
   import os
   gpus = [int(x) for x in os.environ["CUDA_VISIBLE_DEVICES"].split(',')]
   ctx = [mx.gpu(i)  for i in gpus]
   ```


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[GitHub] feevos commented on issue #2910: Helper function to get GPU device number?

[GitBox]

feevos commented on issue #2910: Helper function to get GPU device number?
URL: 
https://github.com/apache/incubator-mxnet/issues/2910#issuecomment-356160135
 
 
   
   ```Python
   import os
   print (os.environment["CUDA_VISIBLE_DEVICES"])
   ```
   output varies depending on available gpus (usually a list of strings, like 
```['0','1','2','3']```
   
   works for me getting the list of gpus available on a particular node (on hpc 
facility, slurm environment, python/2.7.13). 


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