error: Failed to access python version of LHAPDF

[Adil]

Hi,

I am using MG5_aMC_v2_5_0_beta2, Delphes-3.2.0 when i run this ./bin/mg5_aMC CLI, I get this
{A Pythia8 path is specified via the option 'pythia8_path' but no path for option
'mg5amc_py8_interface_path' is specified. This means that Pythia8 cannot be used
leading order simulations with MadEvent.
Consider installing the MG5_aMC-PY8 interface with the following command:

MG5_aMC>install mg5amc_py8_interface}

When i run above command "install mg5amc_py8_interface", after few lines i get this error
{ Command "install mg5amc_py8_interface " interrupted in sub-command:
"install mg5amc_py8_interface" with error:
InvalidCmd : Installation of mg5amc_py8_interface failed.}
How to solve this problem?

Further if i ignore above error and generate any process then during this generation
process i get this error below
{Failed to access python version of LHAPDF: If the python interface to LHAPDF is available
on your system, try adding its location to the PYTHONPATH environment variable and the LHAPDF library location to LD_LIBRARY_PATH (linux) or DYLD_LIBRARY_PATH (mac os x).}
Please guide me in solving this problem.

Cheers,
Adil

[Pavel Demin]

Hi Adil,

I don't see how this problem is related to Delphes. Have you tried to ask this question via MadGraph web site (​https://answers.launchpad.net/mg5amcnlo/+addquestion)?

Cheers,

Pavel

[Michele Selvaggi]

Inside the MG5 interface, type

install boost
install lhapdf6
install pythia8

but indeed this is a MG5 related issue...

[Adil]

Hi Pavel,

I am sorry, i thought that it might be related to Delphes. Any ways i am great full to you for your quick reply and guidance.

Cheers,
Adil

[Adil]

Hi Mselvaggi,

I have tried these commands and installed boost successfully, But in installing lhapdf6 i get this error "Command "install lhapdf6" interrupted with error: InvalidCmd : Installation of lhapdf6 failed."

Cheers,
Adil