How to install? about xlearn

[KhaledTo]

This might be useful: https://github.com/aksnzhy/xlearn/blob/master/doc/install.md

[aksnzhy]

You can build xlearn by using cmake. Please see the details in installation page.

[weiweijiuzaizhe]

I found there is something wrong in multi-thread compling.
If you use command:
make -j4
sometimes you will meet the error:

[ 34%] Building CXX object src/loss/CMakeFiles/loss.dir/cross_entropy_loss.cc.o
c++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
make[2]: *** [gtest/CMakeFiles/gtest.dir/src/gtest-all.cc.o] Error 4
make[1]: *** [gtest/CMakeFiles/gtest.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 35%] Linking CXX shared library libscore.so
[ 36%] Building CXX object src/loss/CMakeFiles/loss.dir/metric.cc.o

If you use command:
make
the compile task will always success.

[aksnzhy]

Thanks for your issue !
But I have never meet this problem and it seems that this error comes from the compiler, not xLearn.
Can you share your compiler and OS information ?

[weiweijiuzaizhe]

my compiler and OS information

[root@****:/root 2017-11-28 17:23:38]#cat /proc/version
Linux version 3.10.0-693.2.2.el7.x86_64 ([email protected]) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) ) #1 SMP Tue Sep 12 22:26:13 UTC 2017
[root@****:/root 2017-11-28 17:25:47]#make -v 
GNU Make 3.82
Built for x86_64-redhat-linux-gnu
Copyright (C) 2010  Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

[HyperGroups]

problem with install the python-interface
Traceback (most recent call last):
File "setup.py", line 15, in
LIB_PATH = [os.path.relpath(libfile, CURRENT_DIR) for libfile in libpath'find_lib_path']
File "xlearn/libpath.py", line 45, in find_lib_path
'Cannot find xlearn Library in the candidate path'
builtin.XLearnLibraryNotFound: Cannot find xlearn Library in the candidate path

[mrgloom]

I have build it with gcc 4.9 with no problem.

Also I found that it have setup.py under xlearn/build/python-package and installed it this way:
https://stackoverflow.com/questions/1471994/what-is-setup-py

And after adding to ~/.bashrc export PYTHONPATH=/home/user/deep_learning/data3/xlearn/python-package/xlearn
I get error on import:

Python 3.6.2 |Anaconda custom (64-bit)| (default, Sep 30 2017, 18:42:57) 
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import xlearn as xl
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/user/deep_learning/data3/xlearn/python-package/xlearn/xlearn.py", line 5, in <module>
    from base import _LIB, XLearnHandle
  File "/home/user/deep_learning/data3/xlearn/python-package/xlearn/base.py", line 20, in <module>
    _LIB = _load_lib()
  File "/home/user/deep_learning/data3/xlearn/python-package/xlearn/base.py", line 13, in _load_lib
    lib_path = find_lib_path()
  File "/home/user/deep_learning/data3/xlearn/python-package/xlearn/libpath.py", line 45, in find_lib_path
    'Cannot find xlearn Library in the candidate path'
libpath.XLearnLibraryNotFound: Cannot find xlearn Library in the candidate path

[aksnzhy]

Did you build your libxlearn library successfully? You can check it in lib directory.