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Subject [GitHub] arrowrowe commented on issue #10455: Bug of group2ctxs for model parallelism
Date Wed, 11 Apr 2018 03:56:06 GMT
arrowrowe commented on issue #10455: Bug of group2ctxs for model parallelism
URL: https://github.com/apache/incubator-mxnet/issues/10455#issuecomment-380319322
 
 
   @eric-haibin-lin yes, same for all 8 gpus cases, same for all <8 gpu cases.
   
   ```
   --group2ctxs 0 --num_gpus 1   loss: 22.12132072448730468750000000000000
   --group2ctxs 1 --num_gpus 1   loss: 22.12132072448730468750000000000000
   --group2ctxs 1 --num_gpus 2   loss: 22.12132072448730468750000000000000
   --group2ctxs 1 --num_gpus 4   loss: 22.12132072448730468750000000000000
   --group2ctxs 1 --num_gpus 7   loss: 22.12132072448730468750000000000000
   --group2ctxs 1 --num_gpus 8   loss: 22.12132263183593750000000000000000
   --group2ctxs 1 --num_gpus 8   loss: 22.12132263183593750000000000000000
   --group2ctxs 1 --num_gpus 8   loss: 22.12132263183593750000000000000000
   --group2ctxs 0 --num_gpus 1   input_grads: 0.00030235992744565010070800781250
   --group2ctxs 1 --num_gpus 1   input_grads: 0.00030235966551117599010467529297
   --group2ctxs 1 --num_gpus 2   input_grads: 0.00030235908343456685543060302734
   --group2ctxs 1 --num_gpus 4   input_grads: 0.00030235905433073639869689941406
   --group2ctxs 1 --num_gpus 7   input_grads: 0.00030235887970775365829467773438
   --group2ctxs 1 --num_gpus 8   input_grads: 0.00453650858253240585327148437500
   --group2ctxs 1 --num_gpus 8   input_grads: 0.00453650858253240585327148437500
   --group2ctxs 1 --num_gpus 8   input_grads: 0.00453650858253240585327148437500
   ```

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