MadGraph5_aMC@NLO

Crash in modify_init_cross when running with small number of events

Asked by Hannes

Hi,

we get the crash pasted below when generating susy events with 0/1/2 jets.
It only crashes when generating a small number of events (200). Of course we are usually generate more events per job but sanity checks are performed with automated tests and small sample sizes.
Is this a bug or expected behaviour when generating small number of events? In the latter case, what would a reasonable min number of events be? I am not aware of similar issues with other processes.

Cheers,
Hannes

---

#************************************************************
#* MadGraph5_aMC@NLO/MadEvent *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.9.5 2021-08-22 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadEvent *
#* *
#* run as ./bin/madevent.py filename *
#* *
#************************************************************
generate_events run_01
Traceback (most recent call last):
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/interface/extended_cmd.py", line 1541, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/interface/extended_cmd.py", line 1490, in onecmd_orig
    return func(arg, **opt)
  File "/tmp/hmildner/PROC_MSSM_SLHA2_0/bin/internal/madevent_interface.py", line 2474, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/interface/common_run_interface.py", line 7107, in new_fct
    original_fct(obj, *args, **opts)
  File "/tmp/hmildner/PROC_MSSM_SLHA2_0/bin/internal/madevent_interface.py", line 2538, in run_generate_events
    self.exec_cmd('combine_events', postcmd=False,printcmd=False)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/interface/extended_cmd.py", line 1570, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/interface/extended_cmd.py", line 1490, in onecmd_orig
    return func(arg, **opt)
  File "/tmp/hmildner/PROC_MSSM_SLHA2_0/bin/internal/madevent_interface.py", line 3680, in do_combine_events
    proc_charac=self.proc_characteristic)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/various/lhe_parser.py", line 1224, in unweight
    return super(MultiEventFile, self).unweight(outputpath, get_wgt_multi, **opts)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/various/lhe_parser.py", line 504, in unweight
    banner.modify_init_cross(cross)
  File "/cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/LCG_88b/MCGenerators/madgraph5amc/2.9.5.atlas2/x86_64-centos7-gcc62-opt/madgraph/various/banner.py", line 369, in modify_init_cross
    raise Exception
Exception
                              Run Options
                              -----------
               stdout_level : None

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
          cluster_temp_path : None
             cluster_memory : None
               cluster_size : 100
              cluster_queue : None
                    nb_core : 1 (user set)
               cluster_time : None
                   run_mode : 0 (user set)

                      Configuration Options
                      ---------------------
                text_editor : None
          f2py_compiler_py2 : None
          f2py_compiler_py3 : None
      cluster_status_update : (600, 30)
               pythia8_path : None (user set)
                  hwpp_path : None (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : None (user set)
                thepeg_path : None (user set)
               cluster_type : condor
          madanalysis5_path : None (user set)
           cluster_nb_retry : 1
                 eps_viewer : None
                web_browser : None
               syscalc_path : /cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/MCGenerators/syscalc/1.1.4p3-61111/x86_64-centos7-gcc62-opt (user set)
           madanalysis_path : None (user set)
                     lhapdf : /tmp/hmildner/lhapdf-config (user set)
         cluster_local_path : None
              f2py_compiler : None
                 hepmc_path : None (user set)
         cluster_retry_wait : 300
                 lhapdf_py3 : /cvmfs/atlas.cern.ch/repo/sw/software/21.6/sw/lcg/releases/MCGenerators/lhapdf/6.2.3-0ff65/x86_64-centos7-gcc62-opt/bin/lhapdf-config (user set)
                 lhapdf_py2 : /tmp/hmildner/lhapdf-config (user set)
           fortran_compiler : None
                auto_update : 0 (user set)
        exrootanalysis_path : None (user set)
                    timeout : 60
               cpp_compiler : None
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.9.5 2021-08-22 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadGraph5_aMC@NLO *
#* *
#* run as ./bin/mg5_aMC filename *
#* *
#************************************************************
set group_subprocesses Auto
set ignore_six_quark_processes False
set max_t_for_channel 99
set loop_optimized_output True
set low_mem_multicore_nlo_generation False
set default_unset_couplings 99
set zerowidth_tchannel True
set loop_color_flows False
set gauge unitary
set complex_mass_scheme False
set max_npoint_for_channel 0
import model MSSM_SLHA2
define p = g u c d s u~ c~ d~ s~
define j = g u c d s u~ c~ d~ s~
define pb = g u c d s b u~ c~ d~ s~ b~
define jb = g u c d s b u~ c~ d~ s~ b~
define l+ = e+ mu+
define l- = e- mu-
define fu = u c e+ mu+ ta+
define fu~ = u~ c~ e- mu- ta-
define fd = d s ve~ vm~ vt~
define fd~ = d~ s~ ve vm vt
define susystrong = go ul ur dl dr cl cr sl sr t1 t2 b1 b2 ul~ ur~ dl~\
 dr~ cl~ cr~ sl~ sr~ t1~ t2~ b1~ b2~
define susyweak = el- el+ er- er+ mul- mul+ mur- mur+ ta1- ta1+ ta2- t\
a2+ n1 n2 n3 n4 x1- x1+ x2- x2+ sve sve~ svm svm~ svt svt~
define susylq = ul ur dl dr cl cr sl sr
define susylq~ = ul~ ur~ dl~ dr~ cl~ cr~ sl~ sr~
define susysq = ul ur dl dr cl cr sl sr t1 t2 b1 b2
define susysq~ = ul~ ur~ dl~ dr~ cl~ cr~ sl~ sr~ t1~ t2~ b1~ b2~
define susysl = el- el+ er- er+ mul- mul+ mur- mur+ ta1- ta1+ ta2- ta2\
+
define susyv = sve svm svt
define susyv~ = sve~ svm~ svt~
define w = w+ w-
define l+ = e+ mu+ ta+
define l- = e- mu- ta-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
define lv = e+ mu+ ta+ e- mu- ta- ve vm vt ve~ vm~ vt~
define f = e+ mu+ ta+ e- mu- ta- ve vm vt ve~ vm~ vt~ u u~ d d~ c c~ s\
 s~ b b~
generate p p > n2 n3 $ susystrong @1
add process p p > n2 n3 j $ susystrong @2
add process p p > n2 n3 j j $ susystrong @3
output -f -nojpeg
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 ####
######################################################################
###################################
## INFORMATION FOR DSQMIX
###################################
BLOCK DSQMIX #
      1 1 1.000000e+00 # rrd1x1
      2 2 1.000000e+00 # rrd2x2
      3 3 9.387379e-01 # rrd3x3
      3 6 3.446319e-01 # rrd3x6
      4 4 1.000000e+00 # rrd4x4
      5 5 1.000000e+00 # rrd5x5
      6 3 -3.446319e-01 # rrd6x3
      6 6 9.387379e-01 # rrd6x6
###################################
## INFORMATION FOR FRALPHA
###################################
BLOCK FRALPHA #
      1 -1.138252e-01 # alp
###################################
## INFORMATION FOR HMIX
###################################
BLOCK HMIX #
      1 3.576810e+02 # rmuh
      2 9.748624e+00 # tb
      4 1.664391e+05 # ma2
###################################
## INFORMATION FOR MASS
###################################
BLOCK MASS #
      5 4.180000e+00 # mb
      6 1.731000e+02 # mt
      15 1.776860e+00 # mta
      23 9.118760e+01 # mz
      24 8.037900e+01 # mw
      25 1.250000e+02 # mh01
      35 4.500000e+09 # mh02
      36 4.500000e+09 # ma0
      37 4.500000e+09 # mh
      1000001 4.500000e+09 # set of param :1*msd1, 1*msd2
      1000002 4.500000e+09 # set of param :1*msu1, 1*msu2
      1000005 4.500000e+09 # msd3
      1000006 4.500000e+09 # msu3
      1000011 4.500000e+09 # set of param :1*msl1, 1*msl2
      1000012 4.500000e+09 # set of param :1*msn1, 1*msn2
      1000015 4.500000e+09 # msl3
      1000016 4.500000e+09 # msn3
      1000021 4.500000e+09 # mgo
      1000022 5.000000e-01 # mneu1
      1000023 1.300000e+03 # mneu2
      1000024 1.300000e+03 # mch1
      1000025 -1.300000e+03 # mneu3
      1000035 4.500000e+09 # mneu4
      1000037 4.500000e+09 # mch2
      2000001 4.500000e+09 # set of param :1*msd4, 1*msd5
      2000002 4.500000e+09 # set of param :1*msu4, 1*msu5
      2000005 4.500000e+09 # msd6
      2000006 4.500000e+09 # msu6
      2000011 4.500000e+09 # set of param :1*msl4, 1*msl5
      2000015 4.500000e+09 # msl6
      1 0.000000e+00 # d : 0.0
      2 0.000000e+00 # u : 0.0
      3 0.000000e+00 # s : 0.0
      4 0.000000e+00 # c : 0.0
      11 0.000000e+00 # e- : 0.0
      12 0.000000e+00 # ve : 0.0
      13 0.000000e+00 # mu- : 0.0
      14 0.000000e+00 # vm : 0.0
      16 0.000000e+00 # vt : 0.0
      21 0.000000e+00 # g : 0.0
      22 0.000000e+00 # a : 0.0
      1000014 4.500000e+09 # svm : msn1
      1000013 4.500000e+09 # mul- : msl1
      2000013 4.500000e+09 # mur- : msl4
      1000004 4.500000e+09 # cl : msu1
      2000004 4.500000e+09 # cr : msu4
      1000003 4.500000e+09 # sl : msd1
      2000003 4.500000e+09 # sr : msd4
###################################
## INFORMATION FOR MSD2
###################################
BLOCK MSD2 #
      1 1 2.736847e+05 # set of param :1*rmd21x1, 1*rmd22x2
      2 2 2.736847e+05 # mg5 will not use this value use instead 1*mdl_rmd21x1
      3 3 2.702620e+05 # rmd23x3
###################################
## INFORMATION FOR MSE2
###################################
BLOCK MSE2 #
      1 1 1.863063e+04 # set of param :1*rme21x1, 1*rme22x2
      2 2 1.863063e+04 # mg5 will not use this value use instead 1*mdl_rme21x1
      3 3 1.796764e+04 # rme23x3
###################################
## INFORMATION FOR MSL2
###################################
BLOCK MSL2 #
      1 1 3.815567e+04 # set of param :1*rml21x1, 1*rml22x2
      2 2 3.815567e+04 # mg5 will not use this value use instead 1*mdl_rml21x1
      3 3 3.782868e+04 # rml23x3
###################################
## INFORMATION FOR MSOFT
###################################
BLOCK MSOFT #
      1 1.013965e+02 # rmx1
      2 1.915042e+02 # rmx2
      3 5.882630e+02 # rmx3
      21 3.233749e+04 # mhd2
      22 -1.288001e+05 # mhu2
###################################
## INFORMATION FOR MSQ2
###################################
BLOCK MSQ2 #
      1 1 2.998367e+05 # set of param :1*rmq21x1, 1*rmq22x2
      2 2 2.998367e+05 # mg5 will not use this value use instead 1*mdl_rmq21x1
      3 3 2.487654e+05 # rmq23x3
###################################
## INFORMATION FOR MSU2
###################################
BLOCK MSU2 #
      1 1 2.803821e+05 # set of param :1*rmu21x1, 1*rmu22x2
      2 2 2.803821e+05 # mg5 will not use this value use instead 1*mdl_rmu21x1
      3 3 1.791371e+05 # rmu23x3
###################################
## INFORMATION FOR NMIX
###################################
BLOCK NMIX #
      1 1 9.983146e-01 # rnn1x1
      1 2 -4.919730e-04 # rnn1x2
      1 3 5.660463e-02 # rnn1x3
      1 4 -1.279349e-02 # rnn1x4
      2 1 -4.908953e-02 # rnn2x1
      2 2 -2.701129e-02 # rnn2x2
      2 3 7.059666e-01 # rnn2x3
      2 4 -7.060253e-01 # rnn2x4
      3 1 -3.095193e-02 # rnn3x1
      3 2 1.269122e-02 # rnn3x2
      3 3 7.059067e-01 # rnn3x3
      3 4 7.075144e-01 # rnn3x4
      4 1 -4.422073e-04 # rnn4x1
      4 2 9.995544e-01 # rnn4x2
      4 3 1.014262e-02 # rnn4x3
      4 4 -2.806868e-02 # rnn4x4
###################################
## INFORMATION FOR SELMIX
###################################
BLOCK SELMIX #
      1 1 1.000000e+00 # rrl1x1
      2 2 1.000000e+00 # rrl2x2
      3 3 2.824872e-01 # rrl3x3
      3 6 9.592711e-01 # rrl3x6
      4 4 1.000000e+00 # rrl4x4
      5 5 1.000000e+00 # rrl5x5
      6 3 9.592711e-01 # rrl6x3
      6 6 -2.824872e-01 # rrl6x6
###################################
## INFORMATION FOR SMINPUTS
###################################
BLOCK SMINPUTS #
      1 1.279340e+02 # aewm1
      3 1.180000e-01 # as (note that parameter not used if you use a pdf set)
###################################
## INFORMATION FOR SNUMIX
###################################
BLOCK SNUMIX #
      1 1 1.000000e+00 # rrn1x1
      2 2 1.000000e+00 # rrn2x2
      3 3 1.000000e+00 # rrn3x3
###################################
## INFORMATION FOR TD
###################################
BLOCK TD #
      3 3 -1.106937e+02 # rtd3x3
###################################
## INFORMATION FOR TE
###################################
BLOCK TE #
      3 3 -2.540197e+01 # rte3x3
###################################
## INFORMATION FOR TU
###################################
BLOCK TU #
      3 3 -4.447525e+02 # rtu3x3
###################################
## INFORMATION FOR UMIX
###################################
BLOCK UMIX #
      1 1 0.000000e+00 # ruu1x1
      1 2 1.000000e+00 # ruu1x2
      2 1 -1.000000e+00 # ruu2x1
      2 2 0.000000e+00 # ruu2x2
###################################
## INFORMATION FOR UPMNS
###################################
BLOCK UPMNS #
      1 1 1.000000e+00 # rmns1x1
      2 2 1.000000e+00 # rmns2x2
      3 3 1.000000e+00 # rmns3x3
###################################
## INFORMATION FOR USQMIX
###################################
BLOCK USQMIX #
      1 1 1.000000e+00 # rru1x1
      2 2 1.000000e+00 # rru2x2
      3 3 5.536450e-01 # rru3x3
      3 6 8.327528e-01 # rru3x6
      4 4 1.000000e+00 # rru4x4
      5 5 1.000000e+00 # rru5x5
      6 3 8.327528e-01 # rru6x3
      6 6 -5.536450e-01 # rru6x6
###################################
## INFORMATION FOR VCKM
###################################
BLOCK VCKM #
      1 1 1.000000e+00 # rckm1x1
      2 2 1.000000e+00 # rckm2x2
      3 3 1.000000e+00 # rckm3x3
###################################
## INFORMATION FOR VMIX
###################################
BLOCK VMIX #
      1 1 0.000000e+00 # rvv1x1
      1 2 1.000000e+00 # rvv1x2
      2 1 -1.000000e+00 # rvv2x1
      2 2 0.000000e+00 # rvv2x2
###################################
## INFORMATION FOR YD
###################################
BLOCK YD #
      3 3 1.388402e-01 # ryd3x3
###################################
## INFORMATION FOR YE
###################################
BLOCK YE #
      3 3 1.008908e-01 # rye3x3
###################################
## INFORMATION FOR YU
###################################
BLOCK YU #
      3 3 8.928445e-01 # ryu3x3
###################################
## INFORMATION FOR DECAY
###################################
DECAY 6 1.420000e+00 #
DECAY 23 2.495200e+00 #
DECAY 24 2.085000e+00 #
DECAY 25 4.069114e-03 # higgs decays
      5.820000e-01 2 -5 5 # br(h1 -> b bbar)
      2.137000e-01 2 -24 24 # br(h1 -> w+ w-)
      8.187000e-02 2 21 21 # br(h1 -> g g)
      6.272000e-02 2 -15 15 # br(h1 -> tau- tau+)
      2.891000e-02 2 -4 4 # br(h1 -> c cbar)
      2.619000e-02 2 23 23 # br(h1 -> z z)
      2.270000e-03 2 22 22 # br(h1 -> gamma gamma)
      2.176000e-04 2 -13 13 # br(h1 -> mu mu)
      1.533000e-03 2 22 23 # br(h1 -> z gamma)
      2.460000e-04 2 -3 3 # br(h1 -> s sbar)

DECAY 35 5.748014e-01 # wh02
DECAY 36 6.321785e-01 # wa0
DECAY 37 5.469628e-01 # wh
DECAY 1000001 5.312788e+00 # wsd1
DECAY 1000002 5.477195e+00 # wsu1
DECAY 1000003 5.312788e+00 # wsd2
DECAY 1000004 5.477195e+00 # wsu2
DECAY 1000005 3.736276e+00 # wsd3
DECAY 1000006 2.021596e+00 # wsu3
DECAY 1000011 2.136822e-01 # wsl1
DECAY 1000012 1.498816e-01 # wsn1
DECAY 1000013 2.136822e-01 # wsl2
DECAY 1000014 1.498816e-01 # wsn2
DECAY 1000015 1.483273e-01 # wsl3
DECAY 1000016 1.475190e-01 # wsn3
DECAY 1000021 5.506754e+00 # wgo
DECAY 1000023 2.051222e-01 # neutralino2 decays
      1.000000e+00 2 23 1000022 # br(~chi_20 -> ~chi_10 z )
      0.000000e+00 2 25 1000022 # br(~chi_20 -> ~chi_10 h )

DECAY 1000024 1.704145e-02 # wch1
DECAY 1000025 2.107225e-01 # neutralino3 decays
      1.000000e+00 2 23 1000022 # br(~chi_30 -> ~chi_10 z )
      0.000000e+00 2 25 1000022 # br(~chi_30 -> ~chi_10 h )

DECAY 1000035 2.585851e+00 # wneu4
DECAY 1000037 2.486895e+00 # wch2
DECAY 2000001 2.858123e-01 # wsd4
DECAY 2000002 1.152973e+00 # wsu4
DECAY 2000003 2.858123e-01 # wsd5
DECAY 2000004 1.152973e+00 # wsu5
DECAY 2000005 8.015663e-01 # wsd6
DECAY 2000006 7.373133e+00 # wsu6
DECAY 2000011 2.161216e-01 # wsl4
DECAY 2000013 2.161216e-01 # wsl5
DECAY 2000015 2.699061e-01 # wsl6
DECAY 1 0.000000e+00 #
DECAY 2 0.000000e+00 #
DECAY 3 0.000000e+00 #
DECAY 4 0.000000e+00 #
DECAY 5 0.000000e+00 #
DECAY 11 0.000000e+00 #
DECAY 12 0.000000e+00 # ve : 0.0
DECAY 13 0.000000e+00 #
DECAY 14 0.000000e+00 # vm : 0.0
DECAY 15 0.000000e+00 #
DECAY 16 0.000000e+00 # vt : 0.0
DECAY 21 0.000000e+00 # g : 0.0
DECAY 22 0.000000e+00 # a : 0.0
DECAY 1000022 0.000000e+00 # n1 : 0.0
###################################
## INFORMATION FOR QNUMBERS 1000022
###################################
BLOCK QNUMBERS 1000022 # n1
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000023
###################################
BLOCK QNUMBERS 1000023 # n2
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000025
###################################
BLOCK QNUMBERS 1000025 # n3
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000035
###################################
BLOCK QNUMBERS 1000035 # n4
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000024
###################################
BLOCK QNUMBERS 1000024 # x1+
      1 3 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000037
###################################
BLOCK QNUMBERS 1000037 # x2+
      1 3 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000021
###################################
BLOCK QNUMBERS 1000021 # go
      1 0 # 3 times electric charge
      2 2 # number of spin states (2s+1)
      3 8 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 35
###################################
BLOCK QNUMBERS 35 # h2
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 36
###################################
BLOCK QNUMBERS 36 # h3
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 0 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 37
###################################
BLOCK QNUMBERS 37 # h+
      1 3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000012
###################################
BLOCK QNUMBERS 1000012 # sve
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000014
###################################
BLOCK QNUMBERS 1000014 # svm
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000016
###################################
BLOCK QNUMBERS 1000016 # svt
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000011
###################################
BLOCK QNUMBERS 1000011 # el-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000013
###################################
BLOCK QNUMBERS 1000013 # mul-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000015
###################################
BLOCK QNUMBERS 1000015 # ta1-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000011
###################################
BLOCK QNUMBERS 2000011 # er-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000013
###################################
BLOCK QNUMBERS 2000013 # mur-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000015
###################################
BLOCK QNUMBERS 2000015 # ta2-
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000002
###################################
BLOCK QNUMBERS 1000002 # ul
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000004
###################################
BLOCK QNUMBERS 1000004 # cl
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000006
###################################
BLOCK QNUMBERS 1000006 # t1
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000002
###################################
BLOCK QNUMBERS 2000002 # ur
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000004
###################################
BLOCK QNUMBERS 2000004 # cr
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000006
###################################
BLOCK QNUMBERS 2000006 # t2
      1 2 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000001
###################################
BLOCK QNUMBERS 1000001 # dl
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000003
###################################
BLOCK QNUMBERS 1000003 # sl
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 1000005
###################################
BLOCK QNUMBERS 1000005 # b1
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000001
###################################
BLOCK QNUMBERS 2000001 # dr
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000003
###################################
BLOCK QNUMBERS 2000003 # sr
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 2000005
###################################
BLOCK QNUMBERS 2000005 # b2
      1 -1 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 3 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)

#*********************************************************************
# MadGraph5_aMC@NLO *
# *
# run_card.dat MadEvent *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/conventions: *
# *
# Lines starting with a '# ' are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# To display more options, you can type the command: *
# update full_run_card *
#*********************************************************************
#
#*********************************************************************
# Tag name for the run (one word) *
#*********************************************************************
  tag_1 = run_tag ! name of the run
#*********************************************************************
# Number of events and rnd seed *
# Warning: Do not generate more than 1M events in a single run *
#*********************************************************************
  200 = nevents ! Number of unweighted events requested
  0 = iseed ! rnd seed (0=assigned automatically=default))
#*********************************************************************
# Collider type and energy *
# lpp: 0=No PDF, 1=proton, -1=antiproton, 2=photon from proton, *
# 3=photon from electron, 4=photon from muon *
#*********************************************************************
  1 = lpp1 ! beam 1 type
  1 = lpp2 ! beam 2 type
  6500.0 = ebeam1 ! beam 1 total energy in GeV
  6500.0 = ebeam2 ! beam 2 total energy in GeV
# To see polarised beam options: type "update beam_pol"

#*********************************************************************
# PDF CHOICE: this automatically fixes also alpha_s and its evol. *
#*********************************************************************
  lhapdf = pdlabel ! PDF set
  260000 = lhaid ! if pdlabel=lhapdf, this is the lhapdf number
# To see heavy ion options: type "update ion_pdf"
#*********************************************************************
# Renormalization and factorization scales *
#*********************************************************************
  False = fixed_ren_scale ! if .true. use fixed ren scale
  False = fixed_fac_scale ! if .true. use fixed fac scale
  91.188 = scale ! fixed ren scale
  91.188 = dsqrt_q2fact1 ! fixed fact scale for pdf1
  91.188 = dsqrt_q2fact2 ! fixed fact scale for pdf2
  -1 = dynamical_scale_choice ! Choose one of the preselected dynamical choices
  1.0 = scalefact ! scale factor for event-by-event scales
#*********************************************************************
# Type and output format
#*********************************************************************
  False = gridpack !True = setting up the grid pack
  -1.0 = time_of_flight ! threshold (in mm) below which the invariant livetime is not written (-1 means not written)
  average = event_norm ! average/sum. Normalization of the weight in the LHEF
#*********************************************************************
# Matching parameter (MLM only)
#*********************************************************************
  0 = ickkw ! 0 no matching, 1 MLM
  1.0 = alpsfact ! scale factor for QCD emission vx
  False = chcluster ! cluster only according to channel diag
  4 = asrwgtflavor ! highest quark flavor for a_s reweight
  True = auto_ptj_mjj ! Automatic setting of ptj and mjj if xqcut >0
! (turn off for VBF and single top processes)
  0.0 = xqcut ! minimum kt jet measure between partons

#***********************************************************************
# Turn on either the ktdurham or ptlund cut to activate *
# CKKW(L) merging with Pythia8 [arXiv:1410.3012, arXiv:1109.4829] *
#***********************************************************************
  325.0 = ktdurham
  0.4 = dparameter
  -1.0 = ptlund
  1, 2, 3, 4, 21 = pdgs_for_merging_cut ! PDGs for two cuts above

#*********************************************************************
#
#*********************************************************************
# Phase-Space Optimization strategy (basic options)
#*********************************************************************
  0 = nhel ! using helicities importance sampling or not.
! 0: sum over helicity, 1: importance sampling
  1 = sde_strategy ! default integration strategy (hep-ph/2021.xxxxx)
! 1 is old strategy (using amp square)
! 2 is new strategy (using only the denominator)
# To see advanced option for Phase-Space optimization: type "update psoptim"
#*********************************************************************
# Generation bias, check the wiki page below for more information: *
# 'cp3.irmp.ucl.ac.be/projects/madgraph/wiki/LOEventGenerationBias' *
#*********************************************************************
  None = bias_module ! Bias type of bias, [None, ptj_bias, -custom_folder-]
  {} = bias_parameters ! Specifies the parameters of the module.
#
#*******************************
# Parton level cuts definition *
#*******************************
#
#
#*********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma) ! Define on/off-shell for "$" and decay
#*********************************************************************
  15.0 = bwcutoff ! (M+/-bwcutoff*Gamma)
#*********************************************************************
# Standard Cuts *
#*********************************************************************
# Minimum and maximum pt's (for max, -1 means no cut) *
#*********************************************************************
  20.0 = ptj ! minimum pt for the jets
  -1.0 = ptjmax ! maximum pt for the jets
  {} = pt_min_pdg ! pt cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = pt_max_pdg ! pt cut for other particles (syntax e.g. {6: 100, 25: 50})
#
# For display option for energy cut in the partonic center of mass frame type 'update ecut'
#
#*********************************************************************
# Maximum and minimum absolute rapidity (for max, -1 means no cut) *
#*********************************************************************
  5.0 = etaj ! max rap for the jets
  {} = eta_min_pdg ! rap cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = eta_max_pdg ! rap cut for other particles (syntax e.g. {6: 2.5, 23: 5})
#*********************************************************************
# Minimum and maximum DeltaR distance *
#*********************************************************************
  0.0 = drjj ! min distance between jets
  -1.0 = drjjmax ! max distance between jets
#*********************************************************************
# Minimum and maximum invariant mass for pairs *
#*********************************************************************
  0.0 = mmjj ! min invariant mass of a jet pair
  -1.0 = mmjjmax ! max invariant mass of a jet pair
  {} = mxx_min_pdg ! min invariant mass of a pair of particles X/X~ (e.g. {6:250})
  {'default': False} = mxx_only_part_antipart ! if True the invariant mass is applied only
! to pairs of particle/antiparticle and not to pairs of the same pdg codes.
#*********************************************************************
# Inclusive cuts *
#*********************************************************************
  0.0 = ptheavy ! minimum pt for at least one heavy final state
  0.0 = xptj ! minimum pt for at least one jet
#*********************************************************************
# Control the pt's of the jets sorted by pt *
#*********************************************************************
  0.0 = ptj1min ! minimum pt for the leading jet in pt
  0.0 = ptj2min ! minimum pt for the second jet in pt
  -1.0 = ptj1max ! maximum pt for the leading jet in pt
  -1.0 = ptj2max ! maximum pt for the second jet in pt
  0 = cutuse ! reject event if fails any (0) / all (1) jet pt cuts
#*********************************************************************
# Control the Ht(k)=Sum of k leading jets *
#*********************************************************************
  0.0 = htjmin ! minimum jet HT=Sum(jet pt)
  -1.0 = htjmax ! maximum jet HT=Sum(jet pt)
  0.0 = ihtmin !inclusive Ht for all partons (including b)
  -1.0 = ihtmax !inclusive Ht for all partons (including b)
#*********************************************************************
# WBF cuts *
#*********************************************************************
  0.0 = xetamin ! minimum rapidity for two jets in the WBF case
  0.0 = deltaeta ! minimum rapidity for two jets in the WBF case
#*********************************************************************
# maximal pdg code for quark to be considered as a light jet *
# (otherwise b cuts are applied) *
#*********************************************************************
  4 = maxjetflavor ! Maximum jet pdg code
#*********************************************************************
#
#*********************************************************************
# Store info for systematics studies *
# WARNING: Do not use for interference type of computation *
#*********************************************************************
  True = use_syst ! Enable systematics studies
#
  systematics = systematics_program ! none, systematics [python], SysCalc [depreceted, C++]
  ['--mur=0.5,1.0,2.0', '--dyn=-1', '--muf=0.5,1.0,2.0', '--weight_info=MUR%(mur).1f_MUF%(muf).1f_PDF%(pdf)i', '--pdf=NNPDF30_nlo_as_0118,PDF4LHC15_nlo_30_pdfas,NNPDF30_nlo_as_0119@0,NNPDF30_nlo_as_0117@0,CT14nlo@0,MMHT2014nlo68clas118@0', '--remove_wgts=".*MUR0.5_MUF2.0.*|.*MUR2.0_MUF0.5.*"'] = systematics_arguments ! see: https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/Systematics#Systematicspythonmodule
# Syscalc is deprecated but to see the associate options type'update syscalc'
  3.0 = lhe_version
  False = cut_decays
  123456 = python_seed

#***********************************************************************
# Turn on either the ktdurham or ptlund cut to activate *
# CKKW(L) merging with Pythia8 [arXiv:1410.3012, arXiv:1109.4829] *
#***********************************************************************

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Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

I failed to reproduce the error with either 2.9.5 or with 2.9.9
This is a bug, but would be difficult to comment/fix it if I do not reproduce it.

Do you have patch in place? How do you run MG5aMC (from which executable via an input script/...)?

Cheers,

Olivier

Revision history for this message
Hannes (hannes3) said : 		#2

Hi Olivier,

below a script to reproduce it.
The crucial ingredients seem to be low event number and ktdurham>0.

Cheers,
Hannes

MGPATH=/home/hmildner/HEP/MG5_aMC_v2_9_6

mkdir standalone_test; cd standalone_test
python $MGPATH/bin/mg5_aMC << EOF
import model MSSM_SLHA2

# Define multiparticle labels
define p = g u c d s u~ c~ d~ s~
define j = g u c d s u~ c~ d~ s~
define pb = g u c d s b u~ c~ d~ s~ b~
define jb = g u c d s b u~ c~ d~ s~ b~
define l+ = e+ mu+
define l- = e- mu-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
define fu = u c e+ mu+ ta+
define fu~ = u~ c~ e- mu- ta-
define fd = d s ve~ vm~ vt~
define fd~ = d~ s~ ve vm vt
define susystrong = go ul ur dl dr cl cr sl sr t1 t2 b1 b2 ul~ ur~ dl~ dr~ cl~ cr~ sl~ sr~ t1~ t2~ b1~ b2~
define susyweak = el- el+ er- er+ mul- mul+ mur- mur+ ta1- ta1+ ta2- ta2+ n1 n2 n3 n4 x1- x1+ x2- x2+ sve sve~ svm svm~ svt svt~
define susylq = ul ur dl dr cl cr sl sr
define susylq~ = ul~ ur~ dl~ dr~ cl~ cr~ sl~ sr~
define susysq = ul ur dl dr cl cr sl sr t1 t2 b1 b2
define susysq~ = ul~ ur~ dl~ dr~ cl~ cr~ sl~ sr~ t1~ t2~ b1~ b2~
define susysl = el- el+ er- er+ mul- mul+ mur- mur+ ta1- ta1+ ta2- ta2+
define susyv = sve svm svt
define susyv~ = sve~ svm~ svt~

# Specify process(es) to run

define w = w+ w-
define l+ = e+ mu+ ta+
define l- = e- mu- ta-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
define lv = e+ mu+ ta+ e- mu- ta- ve vm vt ve~ vm~ vt~
define f = e+ mu+ ta+ e- mu- ta- ve vm vt ve~ vm~ vt~ u u~ d d~ c c~ s s~ b b~
generate p p > n2 n3 $ susystrong @1
add process p p > n2 n3 j $ susystrong @2
add process p p > n2 n3 j j $ susystrong @3

output -f

EOF

cd PROC_MSSM_SLHA2_0
sed -i "s|10000 = nevents|200 = nevents|g" Cards/run_card.dat
sed -i "s|-1.0 = ktdurham|325. = ktdurham|g" Cards/run_card.dat
python bin/generate_events run_01

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#3

and which version of python3 are you using?
Since i do not reproduce it, it might by that this is python3 version dependent.

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#4

For information I have tested with those three version of python
2.7, 3.8 and 3.9 and no issue in any of them (with your script).

Olivier

Revision history for this message
Hannes (hannes3) said : 		#5

Hi,

thanks a lot for looking into this. Sorry, I should have said, we are using python 2.7.
I have now also trouble reproducing this on my laptop, outside the ATLAS environment.

The only thing I can add, in the events folder I see a bunch of files called partialsN.lhe.gz. They are almost identical but the first one has a different init block where one process is missing, I thought this might be relevant considering the traceback message.

partials0.lhe.gz
2212 2212 6.500000e+03 6.500000e+03 0 0 247000 247000 -4 2
   +4.7570314e-03 +5.2795244e-05 +4.8861554e-03 1
   +1.2912363e-04 +2.6214556e-06 +4.8861561e-03 2

partials1.lhe.gz
2212 2212 6.500000e+03 6.500000e+03 0 0 247000 247000 -4 3
   +4.7640011e-03 +5.2872597e-05 +4.8933744e-03 1
   +1.0958510e-08 +6.9937423e-10 +4.8862152e-03 3
   +1.2220339e-04 +2.4800117e-06 +4.6225725e-03 2

My main concern is whether there might be a more serious underlying issue. Probably not?

Cheers,
Hannes

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#6

Hi,

The reason for such partialsN file, is that we have a large number of channel here, and that in order to avoid to have too many file open at the same time, we have an hardcoded limit to do the unweighting by 80 channel at once.
The way it is done for the moment (would be nice to change it actually) is
that channel 0-79 create partials0.lhe.gz
and then channel 80-158 plus partials0.lhe.gz created partials1.lhe.gz
and this up to the moment where all channels have been merged into a single (unweighted) file.
(Would be nice to do 0-79 to partials0 and 80-159 to partials1 such that they can run in parralel --if this does not hit the open file limit obviously--).

So the fact that new sub-processes appears within partial1.lhe.gz sounds quite natural at this stage since it does make sense that not all sub-processes were present within partials0.lhe.gz.

(and the fact that the crash is not present when generating partials(N+1) seems to indicate that this works as expected.

Since I can not reproduce the issue, I have tried to understand what can go wrong (and I believe I did see the issue and why it does not always happen --even if I still fail to reproduce it--) and I came with a patch which hopefully will fix the issue:

Here it is: https://bazaar.launchpad.net/~maddevelopers/mg5amcnlo/LTS_dev/revision/393

Can you test it witin Atlas framework?

Thanks,

Olivier

Revision history for this message
Hannes (hannes3) said : 		#7

Hi,

thanks a lot, that will fix the issue but there seems to be a mismatch in variable names (allow_missing in lhe_parser.py vs allow_zero in banner.py).

Cheers,
Hannes

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#8

Thanks, that's the issue of modifying the code without a way to test the change...

Thanks for the feedback,

Olivier

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Provide an answer of your own, or ask Hannes for more information if necessary.

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