MadGraph5_aMC@NLO

Madgraph v2_3_3 with LHAPDF 6.1.6 and sys calc

Asked by Nikolina.Ilic@cern.ch

Hello,

I am trying to run standalone Madgraph v2_3_3 with LHAPDF 6.1.6. I have tried linking Madgraph to LHAPDF by following what was done here:

https://answers.launchpad.net/mg5amcnlo/+question/281240

Basically in my
MG5_aMC_v2_3_3_p1% emacs input/mg5_configuration.txt

I set
lhapdf=/LHAPDF_INSTALLED/bin/lhapdf-config

I have also put my PDF sets in
/LHAPDF_INSTALLED/share/LHAPDF

Then I run using
/Madgraph_ATLAS/MG5_aMC_v2_3_3_p1% ./bin/mg5_aMC proc_card_Graviton_events.dat

with a run card that has options:
0.5 1 2 = sys_scalefact # factorization/renormalization scale factor
None = sys_alpsfact # \alpha_s emission scale factors
30 50 = sys_matchscale # variation of merging scale
# PDF sets and number of members (0 or none for all members).
Ct10nlo.LHgrid = sys_pdf # matching scales
# MSTW2008nlo68cl.LHgrid 1 = sys_pdf

In my output directory however in my tag_1_parton_syscalc.log, I get the error:
/afs/cern.ch/work/n/nilic/Madgraph_ATLAS/MG5_aMC_v2_3_3_p1/SysCalc/sys_calc: error while loading shared libraries: \
libLHAPDF.so: cannot open shared object file: No such file or directory

I have two questions
1. I thought we no longer had to copy .so files into Madgraph by hand, why do I get the error above
2. If I remove the tag_1_parton_syscalc.log from my run_card.dat, why can't sys calc still run and at least calculate my scale uncertainties?

Thanks for the help!

Nikolina Ilic

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Alexis Kalogeropoulos Edit question
Solved by:
Nikolina.Ilic@cern.ch
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Last query:
Last reply:
Revision history for this message
Nikolina.Ilic@cern.ch (nikolina-ilic) said : 		#1

Hello,

I have actually asked Azuelos Georges, who has helped me resolved this, my apologies for posting it on here as well.

Cheers,
Nikolina Ilic

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#2

Could you post the solution it might be of interest of some other user.

Thanks,

Olivier

> On May 26, 2016, at 17:37, <email address hidden> <email address hidden> wrote:
>
> Question #294387 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/294387
>
> Status: Open => Solved
>
> <email address hidden> confirmed that the question is solved:
> Hello,
>
> I have actually asked Azuelos Georges, who has helped me resolved this,
> my apologies for posting it on here as well.
>
> Cheers,
> Nikolina Ilic
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Nikolina.Ilic@cern.ch (nikolina-ilic) said : 		#3

Hello,

Sure I made a virtual link to the include/LHAPDF in my SysCalc/include directory. Sourced my setup like this (to avoid complaints about fortran version):
setupATLAS
localSetupGcc gcc472_x86_64_slc6
localSetupROOT

Recompiled SysCalc.

Exported the paths:

[nilic@lxplus040]/afs/cern.ch/work/n/nilic/Madgraph_ATLAS% export PATH=$PWD/LHAP DF_INSTALLED/bin:$PATH
[nilic@lxplus040]/afs/cern.ch/work/n/nilic/Madgraph_ATLAS% export LD_LIBRARY_PAT H=$PWD/LHAPDF_INSTALLED/lib:$LD_LIBRARY_PATH
[nilic@lxplus040]/afs/cern.ch/work/n/nilic/Madgraph_ATLAS% export PYTHONPATH=$PWD/LHAPDF_INSTALLED/lib64/python2.6/site-packages:$PYTHONPATH

Nikolina Ilic