Could not find a pdfsets.index file

[Alexander]

Hello,

I run MG5_v2_6_1 with LHAPDF 6.2.1 at CERN lxplus sl7. I set in me5_configuration.txt

lhapdf = /cvmfs/cms.cern.ch/slc7_amd64_gcc900/external/lhapdf/6.2.1-nmpfii4/bin/lhapdf-config

and I got into this error:

INFO: Idle: 1, Running: 0, Completed: 0 [ current time: 11h00 ]
terminate called after throwing an instance of 'LHAPDF::ReadError'
  what(): Could not find a pdfsets.index file

 ==== LHAPDF6 USING DEFAULT-TYPE LHAGLUE INTERFACE ====
        terminate called after throwing an instance of 'LHAPDF::ReadError'
          what(): Could not find a pdfsets.index file

please, help.

Cheers, Sasha.

[Olivier Mattelaer (olivier-mattelaer)]

Where is your pdfsets.index file
Looks like it is not in the path indicated by
/cvmfs/cms.cern.ch/slc7_amd64_gcc900/external/lhapdf/6.2.1-nmpfii4/bin/lhapdf-config

In that case, you typically have to specify it via some LHAPDF specific environment variable.
Which one did you use? (looks like lhapdf is not able to find it either.)

Actually this is typically a question for lhapdf author and not for us. But please answer the question above such that I can check if this is not an issue on our side.

Cheers,

Olivier