Is it possible to run proc_card in cluster mode?

Hi,

First, do you need to have the muon/electron massive?
If not then you can certainly do
generate p p > j j l+ l- l+ l- QCD=0 QED=6 [QCD]
which should be close to three times faster.

Additionally, you can also use the mode
set low_mem_multicore_nlo_generation
which will activate the use of multicore for NLO generation (note thatt they are strong restriction on the version of python for that option)

Cheers,

Olivier

> On 14 Jan 2021, at 20:25, Yannis Maznas <email address hidden> wrote:
>
> New question #694995 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/694995
>
> Dear MG5 developers,
>
> I'm trying to create a new process directory using the following proc_card but the NLO part takes ages to finish even on multicore mode.
> Is there a way to run this procedure in cluster mode?
> I tried set run_mode = 1 but apparently it does not affect anything....
>
> Best,
> Yannis
>
> =========================================================
> set group_subprocesses Auto
> set loop_optimized_output True
> set low_mem_multicore_nlo_generation True
> set loop_color_flows False
> set max_npoint_for_channel 0
> set ignore_six_quark_processes False
> set gauge unitary
> set complex_mass_scheme False
> set nb_core 8
> import model sm
> define p = g u c d s u~ c~ d~ s~
> define j = g u c d s u~ c~ d~ s~
> define l+ = e+ mu+
> define l- = e- mu-
> define vl = ve vm vt
> define vl~ = ve~ vm~ vt~
> generate p p > j j mu+ mu- mu+ mu- QCD=0 QED=6 [QCD]
> add process p p > j j e+ e- mu+ mu- QCD=0 QED=6 [QCD]
> add process p p > j j e+ e- e+ e- QCD=0 QED=6 [QCD]
> output VBS_nb_pp4ljj_SM_LT0_EWK_SM_NLO
> =========================================================
>
> --
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> contact for MadGraph5_aMC@NLO.

Hi Olivier,

Thanks for your quick reply.
I think I do need them massive mostly for consistency purposes with older runs. (I'm not sure if massless e/μ will change anything crucial). I'll give i t a try nonetheless.

As already shown in the card posted, multicore mode was activated but with only 8 available cores the progress is slow.
Hence I was looking for a faster way (i.e cluster) though I suspect that's not an option at this step, right?

Cheers,
Yannis

Thanks Olivier Mattelaer, that solved my question.