[GitHub] [incubator-mxnet] chinakook commented on issue #20471: Wrong gradients on Windows-GPU

[GitBox <gi...@apache.org>]

chinakook commented on issue #20471:
URL: https://github.com/apache/incubator-mxnet/issues/20471#issuecomment-895792069


   I've tested with a 2.0 version modified by myself on Windows, and It's OK.
   ```python
   Input + Target gradient, CPU (OK):
   {'.Inputs.Input': 
   [[-0.33333334 -0.33333334 -0.33333334]]
   <NDArray 1x3 @cpu(0)>, '.Inputs.Target':
   [[0.33333334 0.33333334 0.33333334]]
   <NDArray 1x3 @cpu(0)>, 'seq_715248120': None}
   
   
   Input + Target gradient, GPU (OK):
   {'.Inputs.Input': 
   [[-0.33333334 -0.33333334 -0.33333334]]
   <NDArray 1x3 @gpu(0)>, '.Inputs.Target':
   [[0.33333334 0.33333334 0.33333334]]
   <NDArray 1x3 @gpu(0)>, 'seq_715248120': None}
   
   
   Target gradient only, CPU (OK):
   {'.Inputs.Input': None, '.Inputs.Target':
   [[0.33333334 0.33333334 0.33333334]]
   <NDArray 1x3 @cpu(0)>, 'seq_715248120': None}
   
   
   Target gradient only, GPU (WRONG):
   {'.Inputs.Input': None, '.Inputs.Target':
   [[0.33333334 0.33333334 0.33333334]]
   <NDArray 1x3 @gpu(0)>, 'seq_715248120': None}
   ```


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