MG5 stuck during process generation

Asked by Amin Aboubrahim on 2021-06-03

Hi Olivier,

I am running the script:

######################################

import model MSSM_SLHA2-no_b_mass -name
define snu = sve svm sve~ svm~

generate p p > snu snu @0
add process p p > snu snu j @1
add process p p > snu snu j j @2

output snu_pair

######################################

But it gets stuck at this:

INFO: Combined process c c~ > svm svm~ WEIGHTED<=4 with process u u~ > svm svm~ WEIGHTED<=4

Could you please check?

Thank you,
Amin

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MadGraph5_aMC@NLO Edit question
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Olivier Mattelaer
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Amin Aboubrahim (amin83) said (last edit ):
#1

UPDATE: I still have MG5 version 2.6.0 installed on my computer so I tried the process there and it works. It seems the issue is in the newer version (v3.1.0).

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

Hi,

this seems to be a pure python3 related issue.
Using the latest version with python2 does not have such issue.

Cheers,

Olivier

> On 4 Jun 2021, at 10:11, Amin Aboubrahim <email address hidden> wrote:
>
> Question #697368 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/697368
>
> Amin Aboubrahim gave more information on the question:
> UPDATE: I still have MG5 version 2.6.0 installed on my computer so I
> tried the process there and it works. It seems the issue is in the newer
> version.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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Best Olivier Mattelaer (olivier-mattelaer) said :
#3

And here is the fix for python3:
https://bazaar.launchpad.net/~maddevelopers/mg5amcnlo/LTS_dev/revision/318

Cheers and thanks,

Olivier

Revision history for this message
Amin Aboubrahim (amin83) said :
#4

Thanks Olivier Mattelaer, that solved my question.