[Rivet] The rivet Python module could not be loaded?

[Cheng Chen]

Hi Andy,

Thanks for you reply, I reopened a new lxplus session and followed the steps below:

setupATLAS -> lsetup python -> source rivetenv.sh -> import rivet in python

The problem still the same, and now, the PYTHONPATH is laconic:

[chenc at lxplus0107 rivet]$ echo $PYTHONPATH
/afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:/afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:<http://cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:/afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:>

And my python version is:

[chenc at lxplus0107 rivet]$ python -V
Python 2.7.4

Cheers
Cheng

On 24 Jan 2017, at 11:34, Andy Buckley <a.g.buckley at gmail.com<mailto:a.g.buckley at gmail.com>> wrote:

Hi Cheng,

The versions you are building are fine, but I see a reference to rivet/1.5.0 in your PYTHONPATH! My guess is that the Python interface is accidentally loading an old build of Rivet, which was made for a different architecture/GCC version... hence the GLIBCXX error.

Andy



On 24/01/17 10:24, Cheng Chen wrote:
Hello all,

I followed the prescription
in https://rivet.hepforge.org/trac/wiki/GettingStarted to install the
rivet in my lxplus session, however there is an error shows it cannot
import the module correctly:

   [chenc at lxplus0107 rivet]$ rivet --help
   The rivet Python module could not be loaded: is your PYTHONPATH set
   correctly?


Then I tried to "import rivet” directly on python, this shows a ImportError:


   >>> import rivet
   Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
     File
   "/afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages/rivet/__init__.py<http://cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages/rivet/__init__.py>",
   line 12, in <module>
       from rivet.core import *
   ImportError: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not
   found (required by
   /cvmfs/sft.cern.ch/lcg/releases/LCG_85/HepMC/2.06.09/x86_64-slc6-gcc49-opt/lib/libHepMC.so.4<http://sft.cern.ch/lcg/releases/LCG_85/HepMC/2.06.09/x86_64-slc6-gcc49-opt/lib/libHepMC.so.4>)



And I listed my PATH info below:

   [chenc at lxplus0107 rivet]$ echo $PYTHONPATH
   /afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:/afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/agile/1.2.0/i686-slc5-gcc43-opt/lib/python2.5/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.5.0/i686-slc5-gcc43-opt/lib/python2.6/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/agile/1.2.0/i686-slc5-gcc43-opt/lib/python2.5/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.5.0/i686-slc5-gcc43-opt/lib/python2.6/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.5.0/i686-slc5-gcc43-opt/lib/python2.6/site-packages:<http://cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:/afs/cern.ch/user/c/chenc/software/rivet/lib/python2.7/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/agile/1.2.0/i686-slc5-gcc43-opt/lib/python2.5/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.5.0/i686-slc5-gcc43-opt/lib/python2.6/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/agile/1.2.0/i686-slc5-gcc43-opt/lib/python2.5/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.5.0/i686-slc5-gcc43-opt/lib/python2.6/site-packages:/afs/cern.ch/sw/lcg/external/MCGenerators/rivet/1.5.0/i686-slc5-gcc43-opt/lib/python2.6/site-packages:>


Could help me to found where the problem come from?
BTW, I installed with the RIVET_VERSION=2.5.3 and YODA_VERSION=1.6.6. Is
it possible the problem is related to the version I installed?

Thanks for your help
Cheng


_______________________________________________
Rivet mailing list
Rivet at projects.hepforge.org<mailto:Rivet at projects.hepforge.org>
https://www.hepforge.org/lists/listinfo/rivet



--
Dr Andy Buckley, Lecturer / Royal Society University Research Fellow
Particle Physics Expt Group, University of Glasgow

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.hepforge.org/lists-archive/rivet/attachments/20170124/dc2902cf/attachment.html>