[jira] [Commented] (SINGA-409) [Singa 1.2.0] Basic `singa-cpu` import throws error

["wangwei (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SINGA-409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16692980#comment-16692980 ] 

wangwei commented on SINGA-409:
-------------------------------

It is due to the version mismatch of Protobuf.
In SINGA-396, we updated the protobuf version to be >=3.2.0. And the singa package is built using 3.2.0.
However, 3.6.1 is installed in your OS. In other words, the runtime env and the building env mismatches.
A PR has been sent to fix it by setting the runtime and building env to be 3.6.1.

More info about the lib version is here https://www.ibm.com/developerworks/linux/library/l-shlibs/index.html

> [Singa 1.2.0] Basic `singa-cpu` import throws error
> ---------------------------------------------------
>
>                 Key: SINGA-409
>                 URL: https://issues.apache.org/jira/browse/SINGA-409
>             Project: Singa
>          Issue Type: Bug
>         Environment: MacOS Mojave 10.14
>            Reporter: Ngin Yun Chuan
>            Priority: Major
>
> When I run the image built from this Dockerfile in Docker:
> {noformat}
> FROM ubuntu:16.04
> RUN apt-get update && apt-get -y upgrade
> # Install conda with pip and python 3.6
> RUN apt-get -y install curl bzip2 \
> && curl -sSL https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -o /tmp/miniconda.sh \
> && bash /tmp/miniconda.sh -bfp /usr/local \
> && rm -rf /tmp/miniconda.sh \
> && conda create -y --name rafiki python=3.6 \
> && conda clean --all --yes
> ENV PATH /usr/local/envs/rafiki/bin:$PATH
> RUN conda install --name rafiki -y -c nusdbsystem singa-cpu==1.2.0
> CMD python -c 'import singa'
> {noformat}
> I get an error:
> {noformat}
> >>> import singa
> Traceback (most recent call last):
>   File "/usr/local/envs/rafiki/lib/python3.6/site-packages/singa/singa_wrap.py", line 18, in swig_import_helper
>     return importlib.import_module(mname)
>   File "/usr/local/envs/rafiki/lib/python3.6/importlib/__init__.py", line 126, in import_module
>     return _bootstrap._gcd_import(name[level:], package, level)
>   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
>   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
>   File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
>   File "<frozen importlib._bootstrap>", line 658, in _load_unlocked
>   File "<frozen importlib._bootstrap>", line 571, in module_from_spec
>   File "<frozen importlib._bootstrap_external>", line 922, in create_module
>   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
> ImportError: /usr/local/envs/rafiki/lib/python3.6/site-packages/singa/../../../libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/local/envs/rafiki/lib/python3.6/site-packages/singa/../../../libprotobuf.so.17)
> During handling of the above exception, another exception occurred:
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/local/envs/rafiki/lib/python3.6/site-packages/singa/__init__.py", line 18, in <module>
>     from . import singa_wrap
>   File "/usr/local/envs/rafiki/lib/python3.6/site-packages/singa/singa_wrap.py", line 21, in <module>
>     _singa_wrap = swig_import_helper()
>   File "/usr/local/envs/rafiki/lib/python3.6/site-packages/singa/singa_wrap.py", line 20, in swig_import_helper
>     return importlib.import_module('_singa_wrap')
>   File "/usr/local/envs/rafiki/lib/python3.6/importlib/__init__.py", line 126, in import_module
>     return _bootstrap._gcd_import(name[level:], package, level)
> ModuleNotFoundError: No module named '_singa_wrap'
> {noformat}
> On the other hand, when I downgrade the version from `1.2.0` to `1.1.1`, it seem to work fine.



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