MXNet built from source problem

[jacky4323]

Hi,
I use my own MXNet pakages that built from source,beacause I also has some custom operator.
As you mentioned in your readme file ,some custom operators are not presented in official MXNet
Can I add these additional custom operators to my own MXNet source?
Which operators should I copy to my own MXNet pakages?
Any help would be appericated! Thanks a lot!

Best Regards,
PengWei

[zhreshold]

src/operator/contrib/yolo_output*

[jacky4323]

Hi @zhreshold ,

I copy yolo_output* to my own mxnet and use cmake to build and I comment #import tools.find_mxnet in
line2 demo.py then get below errors
Could you please tell me how I can solve these problems?

• the command line I used:
  git clone --recursive https://github.com/hpi-xnor/mxnet.git (this is what mxnet package I use)
  mkdir build/Release && cd build/Release
  cmake ../../
  make -j8
  export LD_LIBRARY_PATH=/build/Release
  export PYTHONPATH=/python
  python demo.py --cpu

• errors:

File "demo.py", line 100, in
ctx, args.nms_thresh, args.force_nms)
File "demo.py", line 43, in get_detector
data_shape, mean_pixels, ctx=ctx)
File "/home/jacky4323/BMXNet_yolo/mxnet-yolo/detect/detector.py", line 34, in init
load_symbol, args, auxs = mx.model.load_checkpoint(model_prefix, epoch)
File "/home/jacky4323/BMXNet_yolo/mxnet/python/mxnet/model.py", line 420, in load_checkpoint
symbol = sym.load('%s-symbol.json' % prefix)
File "/home/jacky4323/BMXNet_yolo/mxnet/python/mxnet/symbol/symbol.py", line 2494, in load
check_call(_LIB.MXSymbolCreateFromFile(c_str(fname), ctypes.byref(handle)))
File "/home/jacky4323/BMXNet_yolo/mxnet/python/mxnet/base.py", line 146, in check_call
raise MXNetError(py_str(_LIB.MXGetLastError()))
mxnet.base.MXNetError: Failed loading Op stack_downsample of type stack_neighbor: [18:03:20] /home/jacky4323/BMXNet_yolo/mxnet/nnvm/src/core/op.cc:55: Check failed: op != nullptr Operator stack_neighbor is not registered

[zhreshold]

If you run the latest master, stack_neighbor operator shouldn't be required anymore.