Comment 3 for bug 1649725

Answers between lines:

>Could you check if the problem is also present when turning off PY8 parallelization?
>You can do so by setting the MG5aMC option 'nb_core' to 1.

The issue disappears when turning off the parallelization.

>Also, could you attach the xml file that contains the DJR histograms generated by Pythia8?
>It should be in:
>
>/afs/cern.ch/work/j/jruizalv/public/MC_tools/MG5_aMC_v2_5_1/BBbar_13TeV/Events/run_01/djrs.dat
>
>if it was not already erased when the error occurred.
>

It is not there, so I guess it was erased before the error occured.

>Also, given how quickly Pythia8 ran, it seems unlikely that there was not a problem there.
>Could you look at the log of the Shower runs and report if you seen any mention of a problem at >the end, i.e. in:
>
>/afs/cern.ch/work/j/jruizalv/public/MC_tools/MG5_aMC_v2_5_1/BBbar_13TeV/Events/run_01/tag_1_pyth>ia8.log
>

I'm attaching the log.

>(All the paths above are for a single run of Pythia8. The corresponding path for a parallel run >of Pythia8 will be in the split_<x> directories).

I'm also attaching the directories.