[GitHub] [incubator-mxnet] icemelon9 commented on issue #17641: OpenMP Error

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

icemelon9 commented on issue #17641: OpenMP Error
URL: https://github.com/apache/incubator-mxnet/issues/17641#issuecomment-590174397
 
 
   Sorry about the late response. Here's the script to reproduce the error message.
   ```python
   import numpy as np
   import mxnet as mx
   
   a = mx.nd.array(np.random.uniform(size=(1024, 128)).astype('float32'))
   b = mx.nd.array(np.random.uniform(size=(128, 1024)).astype('float32'))
   c = mx.nd.dot(a, b)
   c.wait_to_read()
   ```
   
   The following shows shared library used by libmxnet on my machine. 
   ```
   mxnet git:(master) ldd build/libmxnet.so
           linux-vdso.so.1 (0x00007ffd8b467000)
           libmkl_rt.so => /opt/intel/mkl/lib/intel64/libmkl_rt.so (0x00007f1abac81000)
           librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f1abaa79000)
           libopencv_imgcodecs.so.3.2 => /usr/lib/x86_64-linux-gnu/libopencv_imgcodecs.so.3.2 (0x00007f1aba840000)
           libopencv_imgproc.so.3.2 => /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so.3.2 (0x00007f1aba2ef000)
           libopencv_core.so.3.2 => /usr/lib/x86_64-linux-gnu/libopencv_core.so.3.2 (0x00007f1ab9eb4000)
           libomp.so => /home/ubuntu/repo/mxnet/build/3rdparty/openmp/runtime/src/libomp.so (0x00007f1ab9bce000)
           libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f1ab99ca000)
           libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1ab97ab000)
           libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f1ab9422000)
           libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1ab9084000)
           libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f1ab8e6c000)
           libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1ab8a7b000)
           ...
   ```
   ```
   mxnet git:(master) readelf -a build/libmxnet.so| grep NEEDED
    0x0000000000000001 (NEEDED)             Shared library: [libmkl_rt.so]
    0x0000000000000001 (NEEDED)             Shared library: [librt.so.1]
    0x0000000000000001 (NEEDED)             Shared library: [libopencv_imgcodecs.so.3.2]
    0x0000000000000001 (NEEDED)             Shared library: [libopencv_imgproc.so.3.2]
    0x0000000000000001 (NEEDED)             Shared library: [libopencv_core.so.3.2]
    0x0000000000000001 (NEEDED)             Shared library: [libomp.so]
    0x0000000000000001 (NEEDED)             Shared library: [libdl.so.2]
    0x0000000000000001 (NEEDED)             Shared library: [libpthread.so.0]
    0x0000000000000001 (NEEDED)             Shared library: [libstdc++.so.6]
    0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
    0x0000000000000001 (NEEDED)             Shared library: [libgcc_s.so.1]
    0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
    0x0000000000000001 (NEEDED)             Shared library: [ld-linux-x86-64.so.2]
   ```

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