[Rivet] seg fault in rivet-bootstrap-lcg in lxplus install

[Holger Schulz]

Hi Raghav,

we recently held a Rivet tutorial at CERN using prebuilt rivet2.5 from LCG:

source 
/afs/cern.ch/sw/lcg/releases/LCG_84/Python/2.7.10/x86_64-slc6-gcc48-opt/Python-env.sh
source 
/afs/cern.ch/sw/lcg/releases/LCG_84/MCGenerators/rivet/2.5.0/x86_64-slc6-gcc48-opt/rivetenv.sh

That worked fine for people from CMS, ATLAS and ALICE. There were a 
couple of people who had
to pruge their bashrc becaus of conflicting PYTHONPATH, LD_LIBRARY_PATH 
things that
typically had to do with experiment specific setups of python.

Why don't you give that a try first?

Thanks,
Holger


On 03/08/16 10:23, Andy Buckley wrote:
> Hi Raghav,
>
> This is very strange. I just tried the 2.5.0 version of 
> rivet-bootstrap-lcg and it worked fine, giving me a functioning setup. 
> At least it could list analyses without segfaulting.
>
> It's possible that I've got something set by default in my shell 
> environment that helps me, but by default on lxplus I get the same gcc 
> 4.4 and Python 2.6 as you do. Maybe someone else could try to 
> reproduce your problem.
>
> I've just updated the LCG bootstrap script to use LCG_85, a newer GCC 
> and FastJet, etc. This also works for me. Maybe you'd have more luck 
> with that?
>
> To use the normal bootstrap on lxplus and other SL6 systems with an 
> old system compiler you need to set up your environment to use a newer 
> compiler and a version of Python compiled with the same. The LCG 
> bootstrap does this automatically and puts the relevant lines into the 
> env.sh script. From my updated LCG_85 build, the relevant lines are 
> these:
>
> source 
> /cvmfs/sft.cern.ch/lcg/releases/LCG_85/gcc/4.9.3/x86_64-slc6/setup.sh
> source 
> /cvmfs/sft.cern.ch/lcg/releases/LCG_85/Python/2.7.10/x86_64-slc6-gcc49-opt/Python-env.sh
>
> There are other, fancier ways to do it, but hopefully this will help. 
> It's definitely a good idea to use a newer release than 2.4.1 -- at 
> least 2.4.3, please! We will soon be releasing 2.5.1.
>
> Andy
>
>
>
> On 02/08/16 16:23, Raghav Kunnawalkam Elayavalli wrote:
>> Hi Rivet Experts,
>>
>> I tried a fresh install of the rivet-bootstrap-lcg out of the box in an
>> lxplus machine and after i did
>> $ ./rivet-bootstrap-lcg
>> [rkunnawa at lxplus016 RIVET]$ source
>> /afs/cern.ch/work/r/rkunnawa/RIVET/local/env.sh
>> <http://cern.ch/work/r/rkunnawa/RIVET/local/env.sh>
>> [rkunnawa at lxplus016 RIVET]$ which rivet
>> /afs/cern.ch/work/r/rkunnawa/RIVET/local/bin/rivet
>> <http://cern.ch/work/r/rkunnawa/RIVET/local/bin/rivet>
>> [rkunnawa at lxplus016 RIVET]$ which python
>> /cvmfs/sft.cern.ch/lcg/releases/LCG_82/Python/2.7.10/x86_64-slc6-gcc48-opt/bin/python 
>>
>> <http://sft.cern.ch/lcg/releases/LCG_82/Python/2.7.10/x86_64-slc6-gcc48-opt/bin/python> 
>>
>> [rkunnawa at lxplus016 RIVET]$ echo $PYTHONPATH
>> /afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/cvmfs/sft.cern.ch/lcg/releases/LCG_82/Python/2.7.10/x86_64-slc6-gcc48-opt/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/cvmfs/sft.cern.ch/lcg/releases/LCG_85/Python/2.7.10/x86_64-slc6-gcc49-opt/lib/python2.7/site-packages: 
>>
>> <http://cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/cvmfs/sft.cern.ch/lcg/releases/LCG_82/Python/2.7.10/x86_64-slc6-gcc48-opt/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/afs/cern.ch/work/r/rkunnawa/RIVET/local/lib/python2.7/site-packages:/cvmfs/sft.cern.ch/lcg/releases/LCG_85/Python/2.7.10/x86_64-slc6-gcc49-opt/lib/python2.7/site-packages:> 
>>
>> [rkunnawa at lxplus016 RIVET]$ rivet --list-analyses
>> Segmentation fault
>> [rkunnawa at lxplus016 RIVET]$
>>
>> I tried this with LCG_82 and LCG_85 (with appropriately changing the
>> other locations) and i get the same issues. any ideas whats happening?
>>
>> I also tried to install rivet with the normal bootstrap and i got an
>> issue with yoda installation since the default gcc in lxplus is 4.4 and
>> it doesnt support C++11. so any ideas how i can over come that issue? I
>> would really like to use something like the herwig bootstrap which
>> installs all the necessary items.
>>
>> In the meanwhile should i try to install an older version of rivet? one
>> that doesnt need c++11?
>> Again, the whole reason why im using this is so that i can run my rivet
>> analysis on the lxplus batch system since at the moment (my earlier lcg
>> installation) doesnt work and gives me weird python errors which even
>> the cern service desk is having a hard time with.
>>
>> Cheers
>> Raghav Kunnawalkam Elayavalli
>> PhD Candiate
>> Rutgers University
>> http://physics.rutgers.edu/~raghav/
>> <http://www.google.com/url?q=http%3A%2F%2Fphysics.rutgers.edu%2F~raghav%2F&sa=D&sntz=1&usg=AFQjCNENvwedEL22DMATPxyb0WMvVEm9Bw> 
>>
>>
>>
>>
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