[GitHub] [incubator-mxnet] ptrendx opened a new pull request #17049: Fix operators lying about their number of inputs

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

ptrendx opened a new pull request #17049: Fix operators lying about their number of inputs
URL: https://github.com/apache/incubator-mxnet/pull/17049
 
 
   ## Description ##
   This PR fixes a number of backward operators that advertise the wrong number of inputs (either by having a wrong number passed to `set_num_inputs` or leaving it empty which defaults to 1 input). It also introduces a check in `MakeNode` to catch this error.
   
   Having consistent number of inputs and outputs is important because tools like `Monitor` rely on them (and currently some of the networks are impossible to inspect during backward because of this) and they are needed for more advanced manipulation of the computational graph.
   
   ## Checklist ##
   ### Essentials ###
   Please feel free to remove inapplicable items for your PR.
   - [ ] Changes are complete (i.e. I finished coding on this PR)

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