Generate events interrupted: mathdomain error

[Oscar Ochoa Valeriano]

I'm trying to generate the process e- vm > e- vm a. The run card was modified as follows:

10000 = nevents
500.0 = ebeam1
500.0 = ebeam2
True = cut_decays
-1.0 = pta
-1.0 = ptl
100.0 = ea
-1.0 = el
-1.0 = etaa
-1.0 = etal
-1.0 = drll
-1.0 = dral

I obtain the following output:

INFO: fail to reach target 10000
=== Results Summary for run: run_01 tag: tag_01 ===
Cross-section : 1.339 +- 0.00171 pb
Nb of events : 5620

ERROR: Unable to download /cvmfs/sft.cern.ch/lcg/external/lhapdfsets/current/NNPDF23_lo_as_0130_qed.tar.gz
ERROR: Unable to download /afs/cern.ch/sw/lcg/external/lhapdfsets/current/NNPDF23_lo_as_0130_qed.tar.gz

WARNING: program /usr/bin/python -O BLA/Software/MadGraph/BORS1_TO1_1000_100/bin/internal/systematics.py unweighted_events.lhe.gz ./tmp_1_unweighted_events.lhe.gz --from_card=internal --start_event=2810 --stop_event=5620 --result=./log_sys_1.txt --lhapdf_config=BLA/Software/Herwig/bin/lhapdf-config launch ends with non zero status: 1. Stop all computation
WARNING: program /usr/bin/python -O BLA/Software/MadGraph/BORS1_TO1_1000_100/bin/internal/systematics.py unweighted_events.lhe.gz ./tmp_0_unweighted_events.lhe.gz --from_card=internal --start_event=0 --stop_event=2810 --result=./log_sys_0.txt --lhapdf_config=BLA/Software/Herwig/bin/lhapdf-config launch ends with non zero status: 1. Stop all computation
INFO: Idle: 0, Running: 0, Completed: 2 [ 5.4s ]
INFO: Running Systematics computation
INFO: #Will Compute 44 weights per event.
INFO: # currently at event 0 [elapsed time: 0.0049 s]
Command "generate_events run_01" interrupted with error:
ValueError : math domain error
Please report this bug on https://bugs.launchpad.net/mg5amcnlo
More information is found in 'BLA/Software/MadGraph/BORS1_TO1_1000_100/run_01_tag_1_debug.log'.
Please attach this file to your report.
INFO: storing files of previous run
INFO: Done

I'd really appreciate your help.

Best,

Oscar.

[Olivier Mattelaer (olivier-mattelaer)]

HI,

I do not reproduce that error on the latest version of the code.
But in order to avoid that problem, the easiest in this case is to bypass the computation of the theoretical uncertainties (since the one we compute are 0 anyway)

So you can set in your run_card False = use_syst

Cheers,

Olivier

> On 30 Mar 2017, at 16:09, Oscar Ochoa Valeriano <email address hidden> wrote:
>
> Public bug reported:
>
> I'm trying to generate the process e- vm > e- vm a. The run card was
> modified as follows:
>
> 10000 = nevents
> 500.0 = ebeam1
> 500.0 = ebeam2
> True = cut_decays
> -1.0 = pta
> -1.0 = ptl
> 100.0 = ea
> -1.0 = el
> -1.0 = etaa
> -1.0 = etal
> -1.0 = drll
> -1.0 = dral
>
> I obtain the following output:
>
> INFO: fail to reach target 10000
> === Results Summary for run: run_01 tag: tag_01 ===
> Cross-section : 1.339 +- 0.00171 pb
> Nb of events : 5620
>
> ERROR: Unable to download /cvmfs/sft.cern.ch/lcg/external/lhapdfsets/current/NNPDF23_lo_as_0130_qed.tar.gz
> ERROR: Unable to download /afs/cern.ch/sw/lcg/external/lhapdfsets/current/NNPDF23_lo_as_0130_qed.tar.gz
>
> WARNING: program /usr/bin/python -O BLA/Software/MadGraph/BORS1_TO1_1000_100/bin/internal/systematics.py unweighted_events.lhe.gz ./tmp_1_unweighted_events.lhe.gz --from_card=internal --start_event=2810 --stop_event=5620 --result=./log_sys_1.txt --lhapdf_config=BLA/Software/Herwig/bin/lhapdf-config launch ends with non zero status: 1. Stop all computation
> WARNING: program /usr/bin/python -O BLA/Software/MadGraph/BORS1_TO1_1000_100/bin/internal/systematics.py unweighted_events.lhe.gz ./tmp_0_unweighted_events.lhe.gz --from_card=internal --start_event=0 --stop_event=2810 --result=./log_sys_0.txt --lhapdf_config=BLA/Software/Herwig/bin/lhapdf-config launch ends with non zero status: 1. Stop all computation
> INFO: Idle: 0, Running: 0, Completed: 2 [ 5.4s ]
> INFO: Running Systematics computation
> INFO: #Will Compute 44 weights per event.
> INFO: # currently at event 0 [elapsed time: 0.0049 s]
> Command "generate_events run_01" interrupted with error:
> ValueError : math domain error
> Please report this bug on https://bugs.launchpad.net/mg5amcnlo
> More information is found in 'BLA/Software/MadGraph/BORS1_TO1_1000_100/run_01_tag_1_debug.log'.
> Please attach this file to your report.
> INFO: storing files of previous run
> INFO: Done
>
> I'd really appreciate your help.
>
> Best,
>
> Oscar.
>
> ** Affects: mg5amcnlo
> Importance: Undecided
> Status: New
>
> ** Attachment added: "debug log file"
> https://bugs.launchpad.net/bugs/1677628/+attachment/4850541/+files/run_01_tag_1_debug.log
>
> --
> You received this bug notification because you are subscribed to
> MadGraph5_aMC@NLO.
> https://bugs.launchpad.net/bugs/1677628
>
> Title:
> Generate events interrupted: mathdomain error
>
> Status in MadGraph5_aMC@NLO:
> New
>
> Bug description:
> I'm trying to generate the process e- vm > e- vm a. The run card was
> modified as follows:
>
> 10000 = nevents
> 500.0 = ebeam1
> 500.0 = ebeam2
> True = cut_decays
> -1.0 = pta
> -1.0 = ptl
> 100.0 = ea
> -1.0 = el
> -1.0 = etaa
> -1.0 = etal
> -1.0 = drll
> -1.0 = dral
>...