[GitHub] iamthebot opened a new issue #10723: Adding custom C++ ops without modifying mxnet source

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

iamthebot opened a new issue #10723: Adding custom C++ ops without modifying mxnet source
URL: https://github.com/apache/incubator-mxnet/issues/10723
 
 
   Note: Providing complete information in the most concise form is the best way to get help. This issue template serves as the checklist for essential information to most of the technical issues and bug reports. For non-technical issues and feature requests, feel free to present the information in what you believe is the best form.
   
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   ## Description
   (Brief description of the problem in no more than 2 sentences.)
   Not sure if this is possible already, but all current examples I've seen for adding custom C++ ops require putting the source files (.cc, .cu) in `src/operator` and using `NNVM_REGISTER_OP`  before compiling mxnet.
   
   Is there a way to compile the ops into another library (`.so`) and load them at runtime? It seems that you can sort of do this using the [runtime compilation API](https://mxnet.incubator.apache.org/api/python/rtc/rtc.html) but this doesn't work for non-CUDA code. Also, you'd have to use a python CustomOp that calls this function.
   
   Is the recommended way to use something like cython as a fallback when GPUs aren't available?
   
   The use case for this is that we'd like to offer our users some custom ops that don't really make sense as PRs to upstream mxnet but we'd still like to leverage prebuilt mxnet packages.
   
   ## 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.
   2.
   
   ## What have you tried to solve it?
   
   1.
   2.
   

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