wuxun-zhang commented on issue #14286: Add examples of running MXNet with Horovod URL: https://github.com/apache/incubator-mxnet/pull/14286#issuecomment-473256716 @yuxihu Thanks for reminding. I have re-installed MXNet without MKLDNN by using the command `make USE_OPENCV=1 USE_MKLDNN=0 USE_BLAS=openblas -j`. And using the default command `pip install horovod` to install horovod. When I run `python ~/github/incubator-mxnet/example/distributed_training-horovod/resnet50_imagenet.py --no-cuda` , there still have an error, `OSError: /home/wuxunzha/anaconda3/lib/python3.6/site-packages/horovod/mxnet/mpi_lib.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZNK5mxnet7NDArray7ReshapeERKNS_6TShapeE`. I don't know if it is actually related to MPI. Note: MXNet is built based on GCC 5.3.1-6.
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