[GitHub] msurguy opened a new issue #10230: libomp.so is missing in Docker builds for armv6

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

msurguy opened a new issue #10230: libomp.so is missing in Docker builds for armv6
URL: https://github.com/apache/incubator-mxnet/issues/10230
 
 
   ## Description
   After compiling and deploying MXNet to Raspberry Pi Zero using the new Docker builds, the `libomp.so` error prevents import of MXNet Python library.
   
   More info about how the docker container output was installed is in https://github.com/apache/incubator-mxnet/commit/85215b6176ef3612d198f590268a6595b86565fb
   
   ## Environment info (Required)
   
   ```
   ----------Python Info----------
   Version      : 3.4.2
   Compiler     : GCC 4.9.1
   Build        : ('default', 'Oct 19 2014 13:31:11')
   Arch         : ('32bit', 'ELF')
   ------------Pip Info-----------
   No corresponding pip install for current python.
   ----------MXNet Info-----------
   Hashtag not found. Not installed from pre-built package.
   ----------System Info----------
   Platform     : Linux-4.9.35+-armv6l-with-debian-8.0
   system       : Linux
   node         : raspberrypi
   release      : 4.9.35+
   version      : #1014 Fri Jun 30 14:34:49 BST 2017
   ----------Hardware Info----------
   machine      : armv6l
   processor    : 
   Architecture:          armv6l
   Byte Order:            Little Endian
   CPU(s):                1
   On-line CPU(s) list:   0
   Thread(s) per core:    1
   Core(s) per socket:    1
   Socket(s):             1
   Model name:            ARMv6-compatible processor rev 7 (v6l)
   CPU max MHz:           1000.0000
   CPU min MHz:           700.0000
   ----------Network Test----------
   Setting timeout: 10
   Timing for Conda: https://repo.continuum.io/pkgs/free/, DNS: 0.0275 sec, LOAD: 0.3049 sec.
   Timing for PYPI: https://pypi.python.org/pypi/pip, DNS: 0.0254 sec, LOAD: 0.2241 sec.
   Timing for FashionMNIST: https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/gluon/dataset/fashion-mnist/train-labels-idx1-ubyte.gz, DNS: 0.0589 sec, LOAD: 0.2240 sec.
   Timing for Gluon Tutorial(en): http://gluon.mxnet.io, DNS: 0.1296 sec, LOAD: 0.1997 sec.
   Timing for Gluon Tutorial(cn): https://zh.gluon.ai, DNS: 1.1327 sec, LOAD: 0.3586 sec.
   Timing for MXNet: https://github.com/apache/incubator-mxnet, DNS: 0.0214 sec, LOAD: 0.6467 sec
   ```
   
   Package used (Python/R/Scala/Julia):
   Python 3
   
   ## Build info (Required if built from source)
   
   Built using Docker containers: https://github.com/apache/incubator-mxnet/tree/master/ci
   
   ## Error Message:
   ```shell
   $ python3
   Python 3.4.2 (default, Oct 19 2014, 13:31:11) 
   [GCC 4.9.1] on linux
   Type "help", "copyright", "credits" or "license" for more information.
   >>> import mxnet as mx
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File "/home/pi/.local/lib/python3.4/site-packages/mxnet/__init__.py", line 25, in <module>
       from . import engine
     File "/home/pi/.local/lib/python3.4/site-packages/mxnet/engine.py", line 23, in <module>
       from .base import _LIB, check_call
     File "/home/pi/.local/lib/python3.4/site-packages/mxnet/base.py", line 113, in <module>
       _LIB = _load_lib()
     File "/home/pi/.local/lib/python3.4/site-packages/mxnet/base.py", line 105, in _load_lib
       lib = ctypes.CDLL(lib_path[0], ctypes.RTLD_LOCAL)
     File "/usr/lib/python3.4/ctypes/__init__.py", line 351, in __init__
       self._handle = _dlopen(self._name, mode)
   OSError: libomp.so: cannot open shared object file: No such file or directory
   >>> exit()
   ```
   
   ## Minimum reproducible example
   ```
   python3
   import mxnet as mx
   ```
   
   ## What have you tried to solve it?
   
   1. tried installing `libomp` - not successfully (perhaps doesn't exist for ARMv6 
   2. tried installing `libcomplearn-gomp-dev` - not successfully
   
   cc @larroy 

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