problem with using LHAPDF v. 6.1.5 in aMC@NLO v. 2.3.3

Asked by Susanne Westhoff

Hi Olivier,

I would like to use LHAPDF together with aMC@NLO. When I generate events, the process aborts during compilation with the following message:

-----------------

NFO: Starting run
INFO: Compiling the code
INFO: For gauge cancellation, the width of 't' has been set to zero.
Error: no display specified
INFO: Using LHAPDF v6.1.5 interface for PDFs
INFO: Compiling source...
INFO: ...done, continuing with P* directories
INFO: Compiling directories...
INFO: Compiling on 4 cores
INFO: Compiling P0_gg_ttxg...
INFO: Compiling P0_gu_ttxu...
INFO: Compiling P0_gux_ttxux...
INFO: Compiling P0_ug_ttxu...
terminate called after throwing an instance of 'LHAPDF::ReadError'
  what(): Could not find a pdfsets.index file

Program received signal SIGABRT: Process abort signal.
 ------------

In mg5_configuration.txt, I have set "cluster_local_path = None" and
"lhapdf = ~/LHAPDF/bin/lhapdf-config".

The file pdfsets.index is in "~/LHAPDF/share/LHAPDF/", and this is also where the PDF data sets are downloaded to, if I call them from the run_card.

What am I doing wrong?

Thank you much,
Susanne.

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Olivier Mattelaer (olivier-mattelaer) said :
#1

Hi,

Looks like a LHAPDF problem, you will likely receive better support by asking them.
My two cent contribution would be to check that the path returned by
> ~/LHAPDF/bin/lhapdf-config —matador
is indeed ~/LHAPDF/share/LHAPDF/

Cheers,

Olivier

> On Jan 20, 2016, at 17:08, Susanne Westhoff <email address hidden> wrote:
>
> New question #281240 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/281240
>
> Hi Olivier,
>
> I would like to use LHAPDF together with aMC@NLO. When I generate events, the process aborts during compilation with the following message:
>
> -----------------
>
> NFO: Starting run
> INFO: Compiling the code
> INFO: For gauge cancellation, the width of 't' has been set to zero.
> Error: no display specified
> INFO: Using LHAPDF v6.1.5 interface for PDFs
> INFO: Compiling source...
> INFO: ...done, continuing with P* directories
> INFO: Compiling directories...
> INFO: Compiling on 4 cores
> INFO: Compiling P0_gg_ttxg...
> INFO: Compiling P0_gu_ttxu...
> INFO: Compiling P0_gux_ttxux...
> INFO: Compiling P0_ug_ttxu...
> terminate called after throwing an instance of 'LHAPDF::ReadError'
> what(): Could not find a pdfsets.index file
>
> Program received signal SIGABRT: Process abort signal.
> ------------
>
> In mg5_configuration.txt, I have set "cluster_local_path = None" and
> "lhapdf = ~/LHAPDF/bin/lhapdf-config".
>
> The file pdfsets.index is in "~/LHAPDF/share/LHAPDF/", and this is also where the PDF data sets are downloaded to, if I call them from the run_card.
>
> What am I doing wrong?
>
> Thank you much,
> Susanne.
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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