[GitHub] azai91 opened a new issue #13876: Incorrect Conv2DTranspose behavior on CPU

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azai91 opened a new issue #13876: Incorrect Conv2DTranspose behavior on CPU
URL: https://github.com/apache/incubator-mxnet/issues/13876
 
 
   The native CPU implementation of Conv2DTranspose produces incorrect results.
   ```
   import mxnet as mx
   data = mx.nd.array(((0,0,0),
                       (0,1,0),
                       (0,0,0)))
   kernel = mx.nd.array(((1,2,3),
                         (4,5,6),
                         (7,8,9)))
   data_batch = data.expand_dims(0).expand_dims(0)
   weight = kernel.expand_dims(0).expand_dims(0)
   # initialize and set weight
   conv = mx.gluon.nn.Conv2DTranspose(in_channels=1, channels=1,
                                      kernel_size=(3,3), padding=(2,2),
                                      strides=(2,2), dilation=(2,2))
   conv.initialize()
   conv.weight.set_data(weight)
   print(conv(data_batch))
   ```
   
   ```
   [[[[0. 0. 0. 0. 0.]
      [0. 1. 0. 2. 3.]
      [0. 0. 0. 0. 0.]
      [0. 4. 0. 5. 6.]
      [0. 7. 0. 8. 9.]]]]
   <NDArray 1x1x5x5 @cpu(0)>
   ```
   
   The output should be
   ```
   [[[[1. 0. 2. 0. 3.]
      [0. 0. 0. 0. 0.]
      [4. 0. 5. 0. 6.]
      [0. 0. 0. 0. 0.]
      [7. 0. 8. 0. 9.]]]]
   <NDArray 1x1x5x5 @cpu(0)>
   ```
   
   
   ## Description
   (Brief description of the problem in no more than 2 sentences.)
   
   ## Environment info (Required)
   
   ```
   What to do:
   1. Download the diagnosis script from https://raw.githubusercontent.com/apache/incubator-mxnet/master/tools/diagnose.py
   2. Run the script using `python diagnose.py` and paste its output here.
   
   ```
   
   Package used (Python/R/Scala/Julia):
   (I'm using ...)
   
   For Scala user, please provide:
   1. Java version: (`java -version`)
   2. Maven version: (`mvn -version`)
   3. Scala runtime if applicable: (`scala -version`)
   
   For R user, please provide R `sessionInfo()`:
   
   ## Build info (Required if built from source)
   
   Compiler (gcc/clang/mingw/visual studio):
   
   MXNet commit hash:
   (Paste the output of `git rev-parse HEAD` here.)
   
   Build config:
   (Paste the content of config.mk, or the build command.)
   
   ## Error Message:
   (Paste the complete error message, including stack trace.)
   
   ## Minimum reproducible example
   (If you are using your own code, please provide a short script that reproduces the error. Otherwise, please provide link to the existing example.)
   
   ## Steps to reproduce
   (Paste the commands you ran that produced the error.)
   
   1. See above script
   
   

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