Cannot reconstruct saved job status

[Francesco Giuli]

Dear experts,
I'm trying to generate events from a previously-generated gridpack with MG5_aMC@NLO 2.5.3.
I didn't get any error while generating the gridpack (the process I'm trying to generate is the following one:
import model loop_sm-no_b_mass
define p = p b b~
define j = p
import model loop_sm-no_b_mass
generate p p > t t~ [QCD] @0
) but then, just before the start of the event generation, I got:
generate 10:55:16 INFO: Starting run
generate 10:55:16 INFO: Generating events without running the shower.
generate 10:55:16 Error detected in "launch --parton --only_generation -f --name=run_01"
generate 10:55:16 write debug file /afs/cern.ch/work/f/fgiuli/public/TTBAR_TRY/run/pp_tt_012jFxFx_NLO_13TeV_PY8_MadSpin_intDep/run_01_tag_1_debug.log
generate 10:55:16 If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
generate 10:55:16 aMCatNLOError : Cannot reconstruct saved job status in /afs/cern.ch/work/f/fgiuli/public/TTBAR_TRY/run/pp_tt_012jFxFx_NLO_13TeV_PY8_MadSpin_intDep/SubProcesses/job_status.pkl
generate 10:55:16 quit
I tried to generate the same process (with exactly the same commands) using MG5_aMC@NLO 2.4.3 and everything ran smoothly, without any issue.
Have you ever experienced something similar? Could you please have a look at it?

Best,
Fra

[Olivier Mattelaer (olivier-mattelaer)]

Hi,

This is discussed in the following thread.
(and it contains two ways to solve this problem)

Cheers,

Olivier