[GitHub] zeakey opened a new issue #12838: Module.predict(): different behaviour with caffe's net.forward()?

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zeakey opened a new issue #12838: Module.predict(): different behaviour with caffe's net.forward()?
URL: https://github.com/apache/incubator-mxnet/issues/12838
 
 
   It seems that mxnet's `Module.predict(data)` automatically performs a channel switch.
   
   I have two identical networks, say `mx_net` and `caffe_net`, in mxnet and caffe respectively, I've mannually checked all the parameters
   are identical.
   
   I found that he outputs of the two nets are different by:
   ```
   mx_output = mx_net.predict(data)
   caffe_output = caffe_net.forward(data)
   ```
   
   Interestingly,  if I manually switch channel of the data, I got identical outputs:
   ```
   caffe_output = caffe_net.forward(data)
   data = channel_switch(data)
   mx_output = mx_net.predict(data)
   ```
   
   So is it real that MxNet performs an automatic channel switch inside the `Module.precit()` routine?
   
   If so:
   firstly, this is an elegant design and really friendly to beginners,
   and second, can some one point out where does this happen in the source code?
   

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