Running systematics gives error at large number of events

Asked by Peter Meiring on 2018-10-23

Hi,

I want to use a specific PDF during the generation of pp>hh [QCD] events. If I launch MadGraph like this, it works fine:

./bin/mg5_aMC mg5_customconfiguration.txt

Where mg5_customconfiguration.txt contains:
"""""
import model ./models/loop_sm
generate p p > h h [QCD]
output pp2hh_loopsm
launch
shower=Pythia8
detector=Delphes
set nevents 100
set pdlabel lhapdf
set lhaid 264000
""""""

However, when I try to increase the number of events (nevents) in mg5_customconfiguration.txt to 10000, it returns an error when starting the systematics:

 """"
INFO: Running Systematics computation
INFO: Idle: 4, Running: 0, Completed: 0 [ current time: 14h52 ]
WARNING: program /usr/bin/python -O /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/pp2hh_loopsm/bin/internal/systematics.py unweighted_events.lhe.gz ./tmp_3_unweighted_events.lhe.gz --mur=0.5,1,2 --muf=0.5,1,2 --pdf=errorset --start_event=7500 --stop_event=10000 --result=./log_sys_3.txt --lhapdf_config=/afs/cern.ch/work/p/pmeiring/private/ATLAS/LHAPDF6/bin/lhapdf-config launch ends with non zero status: 1. Stop all computation
INFO: Idle: 0, Running: 0, Completed: 4 [ 3.8s ]
INFO: Running Systematics computation
INFO: # events generated with PDF: NNPDF30_nlo_as_0115 (264000)
INFO: #Will Compute 145 weights per event.
INFO: # currently at event 0 [elapsed time: 0.013 s]
INFO: # currently at event 2500 [elapsed time: 9.3 s]
INFO: # currently at event 5000 [elapsed time: 19 s]
INFO: # currently at event 7500 [elapsed time: 30 s]
INFO: #***************************************************************************
#
# original cross-section: 0.0132893416
# scale variation: +25.9% -19.5%
# central scheme variation: +33% - 0%
# PDF variation: +3.27% -3.27%
#
# dynamical scheme # 1 : 0.0150627 +27% -20.1% # \sum ET
# dynamical scheme # 2 : 0.0139859 +26.4% -19.8% # \sum\sqrt{m^2+pt^2}
# dynamical scheme # 3 : 0.0176751 +28.4% -20.9% # 0.5 \sum\sqrt{m^2+pt^2}
# dynamical scheme # 4 : 0.0132893 +25.9% -19.5% # \sqrt{\hat s}
#***************************************************************************

INFO: self.output.name = /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/pp2hh_loopsm/Events/run_01/.tmp_unweighted_events.lhe
INFO: self.output_path = /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/pp2hh_loopsm/Events/run_01/unweighted_events.lhe
INFO: End of systematics computation
INFO: # events generated with PDF: NNPDF30_nlo_as_0115 (264000)
INFO: #Will Compute 145 weights per event.
Command "generate_events run_01" interrupted with error:
IndexError : list index out of range
Please report this bug on https://bugs.launchpad.net/mg5amcnlo
More information is found in '/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/pp2hh_loopsm/run_01_tag_1_debug.log'.
Please attach this file to your report.
""""

Here is my pp2hh_loopsm/run_01_tag_1_debug.log:
""""
#************************************************************
#* MadGraph5_aMC@NLO/MadEvent *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.6.3.2 2018-06-22 *
#* *
#* 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 "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/extended_cmd.py", line 1501, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/extended_cmd.py", line 1450, in onecmd_orig
    return func(arg, **opt)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/madevent_interface.py", line 2469, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/common_run_interface.py", line 6711, in new_fct
    original_fct(obj, *args, **opts)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/madevent_interface.py", line 2551, in run_generate_events
    postcmd=False, printcmd=False)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/extended_cmd.py", line 1528, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/extended_cmd.py", line 1450, in onecmd_orig
    return func(arg, **opt)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/interface/common_run_interface.py", line 1868, in do_systematics
    sys_obj.print_cross_sections(all_cross, nb_event, result_file)
  File "/afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/madgraph/various/systematics.py", line 422, in print_cross_sections
    to_print.append(all_cross[i])
IndexError: list index out of range
                              Run Options
                              -----------
               stdout_level : 20 (user set)

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
          cluster_temp_path : None
             cluster_memory : None (user set)
               cluster_size : 100
              cluster_queue : None (user set)
                    nb_core : 10 (user set)
               cluster_time : 10 (user set)
                   run_mode : 2

                      Configuration Options
                      ---------------------
                text_editor : None
         cluster_local_path : None
      cluster_status_update : (600, 30)
               pythia8_path : /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/HEPTools/pythia8 (user set)
                  hwpp_path : None (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/Delphes (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 : None (user set)
           madanalysis_path : None (user set)
                     lhapdf : /afs/cern.ch/work/p/pmeiring/private/ATLAS/LHAPDF6/bin/lhapdf-config (user set)
              f2py_compiler : None
                 hepmc_path : None (user set)
         cluster_retry_wait : 300
           fortran_compiler : /afs/cern.ch/sw/lcg/external/gcc/4.9.3/x86_64-slc6-gcc49-opt/bin/gfortran (user set)
                auto_update : 7 (user set)
        exrootanalysis_path : /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3_2/ExRootAnalysis (user set)
                    timeout : 60
               cpp_compiler : None
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.6.3.2 2018-06-22 *
#* *
#* 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 default_unset_couplings 99
set group_subprocesses Auto
set ignore_six_quark_processes False
set loop_optimized_output True
set loop_color_flows False
set gauge unitary
set complex_mass_scheme False
set max_npoint_for_channel 0
import model /afs/cern.ch/work/p/pmeiring/private/ATLAS/MG5_aMC_v2_6_3\
_2/models/loop_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 > h h [QCD]
output pp2hh_loopsm
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 FOLLOWING UFO MODEL ####
######################################################################
## ##
## Width set on Auto will be computed following the information ##
## present in the decay.py files of the model. ##
## See arXiv:1402.1178 for more details. ##
## ##
######################################################################

###################################
## INFORMATION FOR LOOP
###################################
Block loop
    1 9.118800e+01 # MU_R

###################################
## INFORMATION FOR MASS
###################################
Block mass
    5 4.700000e+00 # MB
    6 1.730000e+02 # MT
   15 1.777000e+00 # MTA
   23 9.118800e+01 # MZ
   25 1.250000e+02 # MH
## Dependent parameters, given by model restrictions.
## Those values should be edited following the
## analytical expression. MG5 ignores those values
## but they are important for interfacing the output of MG5
## to external program such as Pythia.
  1 0.000000 # d : 0.0
  2 0.000000 # u : 0.0
  3 0.000000 # s : 0.0
  4 0.000000 # c : 0.0
  11 0.000000 # e- : 0.0
  12 0.000000 # ve : 0.0
  13 0.000000 # mu- : 0.0
  14 0.000000 # vm : 0.0
  16 0.000000 # vt : 0.0
  21 0.000000 # g : 0.0
  22 0.000000 # a : 0.0
  24 80.419002 # w+ : cmath.sqrt(MZ__exp__2/2. + cmath.sqrt(MZ__exp__4/4. - (aEW*cmath.pi*MZ__exp__2)/(Gf*sqrt__2)))

###################################
## INFORMATION FOR SMINPUTS
###################################
Block sminputs
    1 1.325070e+02 # aEWM1
    2 1.166390e-05 # Gf
    3 1.180000e-01 # aS

###################################
## INFORMATION FOR YUKAWA
###################################
Block yukawa
    5 4.700000e+00 # ymb
    6 1.730000e+02 # ymt
   15 1.777000e+00 # ymtau

###################################
## INFORMATION FOR DECAY
###################################
DECAY 6 1.491500e+00 # WT
DECAY 23 2.441404e+00 # WZ
DECAY 24 2.047600e+00 # WW
DECAY 25 6.382339e-03 # WH
## Dependent parameters, given by model restrictions.
## Those values should be edited following the
## analytical expression. MG5 ignores those values
## but they are important for interfacing the output of MG5
## to external program such as Pythia.
DECAY 1 0.000000 # d : 0.0
DECAY 2 0.000000 # u : 0.0
DECAY 3 0.000000 # s : 0.0
DECAY 4 0.000000 # c : 0.0
DECAY 5 0.000000 # b : 0.0
DECAY 11 0.000000 # e- : 0.0
DECAY 12 0.000000 # ve : 0.0
DECAY 13 0.000000 # mu- : 0.0
DECAY 14 0.000000 # vm : 0.0
DECAY 15 0.000000 # ta- : 0.0
DECAY 16 0.000000 # vt : 0.0
DECAY 21 0.000000 # g : 0.0
DECAY 22 0.000000 # a : 0.0
#===========================================================
# QUANTUM NUMBERS OF NEW STATE(S) (NON SM PDG CODE)
#===========================================================

Block QNUMBERS 82 # gh
        1 0 # 3 times electric charge
        2 1 # number of spin states (2S+1)
        3 8 # 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 *
#*********************************************************************
#
#*******************
# Running parameters
#*******************
#
#*********************************************************************
# 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 *
# If you want to run Pythia, avoid more than 50k events in a run. *
#*********************************************************************
  10000 = 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 *
#*********************************************************************
  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
  264000 = 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)
  3.0 = lhe_version ! Change the way clustering information pass to shower.
  True = clusinfo ! include clustering tag in output
  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
  False = 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
#*********************************************************************
#
#*********************************************************************
# handling of the helicities:
# 0: sum over all helicities
# 1: importance sampling over helicities
#*********************************************************************
  1 = nhel ! using helicities importance sampling or not.
#*********************************************************************
# 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)
#*********************************************************************
# Apply pt/E/eta/dr/mij/kt_durham cuts on decay products or not
# (note that etmiss/ptll/ptheavy/ht/sorted cuts always apply)
#*********************************************************************
  False = cut_decays ! Cut decay products
#*********************************************************************
# Standard Cuts *
#*********************************************************************
# Minimum and maximum pt's (for max, -1 means no cut) *
#*********************************************************************
  20.0 = ptj ! minimum pt for the jets
  0.0 = ptb ! minimum pt for the b
  10.0 = pta ! minimum pt for the photons
  10.0 = ptl ! minimum pt for the charged leptons
  0.0 = misset ! minimum missing Et (sum of neutrino's momenta)
  -1.0 = ptjmax ! maximum pt for the jets
  -1.0 = ptbmax ! maximum pt for the b
  -1.0 = ptamax ! maximum pt for the photons
  -1.0 = ptlmax ! maximum pt for the charged leptons
  -1.0 = missetmax ! maximum missing Et (sum of neutrino's momenta)
  {} = 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})
#*********************************************************************
# Minimum and maximum E's (in the center of mass frame) *
#*********************************************************************
  0.0 = ej ! minimum E for the jets
  0.0 = eb ! minimum E for the b
  0.0 = ea ! minimum E for the photons
  0.0 = el ! minimum E for the charged leptons
  -1.0 = ejmax ! maximum E for the jets
  -1.0 = ebmax ! maximum E for the b
  -1.0 = eamax ! maximum E for the photons
  -1.0 = elmax ! maximum E for the charged leptons
  {} = e_min_pdg ! E cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = e_max_pdg ! E cut for other particles (syntax e.g. {6: 100, 25: 50})
#*********************************************************************
# Maximum and minimum absolute rapidity (for max, -1 means no cut) *
#*********************************************************************
  5.0 = etaj ! max rap for the jets
  -1.0 = etab ! max rap for the b
  2.5 = etaa ! max rap for the photons
  2.5 = etal ! max rap for the charged leptons
  0.0 = etajmin ! min rap for the jets
  0.0 = etabmin ! min rap for the b
  0.0 = etaamin ! min rap for the photons
  0.0 = etalmin ! main rap for the charged leptons
  {} = 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 *
#*********************************************************************
  0.4 = drjj ! min distance between jets
  0.0 = drbb ! min distance between b's
  0.4 = drll ! min distance between leptons
  0.4 = draa ! min distance between gammas
  0.0 = drbj ! min distance between b and jet
  0.4 = draj ! min distance between gamma and jet
  0.4 = drjl ! min distance between jet and lepton
  0.0 = drab ! min distance between gamma and b
  0.0 = drbl ! min distance between b and lepton
  0.4 = dral ! min distance between gamma and lepton
  -1.0 = drjjmax ! max distance between jets
  -1.0 = drbbmax ! max distance between b's
  -1.0 = drllmax ! max distance between leptons
  -1.0 = draamax ! max distance between gammas
  -1.0 = drbjmax ! max distance between b and jet
  -1.0 = drajmax ! max distance between gamma and jet
  -1.0 = drjlmax ! max distance between jet and lepton
  -1.0 = drabmax ! max distance between gamma and b
  -1.0 = drblmax ! max distance between b and lepton
  -1.0 = dralmax ! maxdistance between gamma and lepton
#*********************************************************************
# Minimum and maximum invariant mass for pairs *
# WARNING: for four lepton final state mmll cut require to have *
# different lepton masses for each flavor! *
#*********************************************************************
  0.0 = mmjj ! min invariant mass of a jet pair
  0.0 = mmbb ! min invariant mass of a b pair
  0.0 = mmaa ! min invariant mass of gamma gamma pair
  0.0 = mmll ! min invariant mass of l+l- (same flavour) lepton pair
  -1.0 = mmjjmax ! max invariant mass of a jet pair
  -1.0 = mmbbmax ! max invariant mass of a b pair
  -1.0 = mmaamax ! max invariant mass of gamma gamma pair
  -1.0 = mmllmax ! max invariant mass of l+l- (same flavour) lepton 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.
#*********************************************************************
# Minimum and maximum invariant mass for all letpons *
#*********************************************************************
  0.0 = mmnl ! min invariant mass for all letpons (l+- and vl)
  -1.0 = mmnlmax ! max invariant mass for all letpons (l+- and vl)
#*********************************************************************
# Minimum and maximum pt for 4-momenta sum of leptons *
#*********************************************************************
  0.0 = ptllmin ! Minimum pt for 4-momenta sum of leptons(l and vl)
  -1.0 = ptllmax ! Maximum pt for 4-momenta sum of leptons(l and vl)
#*********************************************************************
# Inclusive cuts *
#*********************************************************************
  0.0 = ptheavy ! minimum pt for at least one heavy final state
  0.0 = xptj ! minimum pt for at least one jet
  0.0 = xptb ! minimum pt for at least one b
  0.0 = xpta ! minimum pt for at least one photon
  0.0 = xptl ! minimum pt for at least one charged lepton
#*********************************************************************
# 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
  0.0 = ptj3min ! minimum pt for the third jet in pt
  0.0 = ptj4min ! minimum pt for the fourth 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
  -1.0 = ptj3max ! maximum pt for the third jet in pt
  -1.0 = ptj4max ! maximum pt for the fourth jet in pt
  0 = cutuse ! reject event if fails any (0) / all (1) jet pt cuts
#*********************************************************************
# Control the pt's of leptons sorted by pt *
#*********************************************************************
  0.0 = ptl1min ! minimum pt for the leading lepton in pt
  0.0 = ptl2min ! minimum pt for the second lepton in pt
  0.0 = ptl3min ! minimum pt for the third lepton in pt
  0.0 = ptl4min ! minimum pt for the fourth lepton in pt
  -1.0 = ptl1max ! maximum pt for the leading lepton in pt
  -1.0 = ptl2max ! maximum pt for the second lepton in pt
  -1.0 = ptl3max ! maximum pt for the third lepton in pt
  -1.0 = ptl4max ! maximum pt for the fourth lepton in pt
#*********************************************************************
# 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)
  0.0 = ht2min ! minimum Ht for the two leading jets
  0.0 = ht3min ! minimum Ht for the three leading jets
  0.0 = ht4min ! minimum Ht for the four leading jets
  -1.0 = ht2max ! maximum Ht for the two leading jets
  -1.0 = ht3max ! maximum Ht for the three leading jets
  -1.0 = ht4max ! maximum Ht for the four leading jets
#***********************************************************************
# Photon-isolation cuts, according to hep-ph/9801442 *
# When ptgmin=0, all the other parameters are ignored *
# When ptgmin>0, pta and draj are not going to be used *
#***********************************************************************
  0.0 = ptgmin ! Min photon transverse momentum
  0.4 = r0gamma ! Radius of isolation code
  1.0 = xn ! n parameter of eq.(3.4) in hep-ph/9801442
  1.0 = epsgamma ! epsilon_gamma parameter of eq.(3.4) in hep-ph/9801442
  True = isoem ! isolate photons from EM energy (photons and leptons)
#*********************************************************************
# 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
#***********************************************************************
# Turn on either the ktdurham or ptlund cut to activate *
# CKKW(L) merging with Pythia8 [arXiv:1410.3012, arXiv:1109.4829] *
#***********************************************************************
  -1.0 = ktdurham
  0.4 = dparameter
  -1.0 = ptlund
  1, 2, 3, 4, 5, 6, 21, 82 = pdgs_for_merging_cut ! PDGs for two cuts above
#*********************************************************************
# 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=0.5,1,2', '--muf=0.5,1,2', '--pdf=errorset'] = 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'#*********************************************************************
# Additional hidden parameters
#*********************************************************************
  ['--mur=0.5,1,2', '--muf=0.5,1,2', '--pdf=errorset'] = systematics_arguments # Choose the argment to pass to the systematics command. like --mur=0.25,1,4. Look at the help of the systematics function for more details.
"""""

Does anyone know how to fix this?
Cheers!

Peter

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
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Last query:
2018-10-23
Last reply:
8 hours ago

Hi,

I tried with lhapdf 6.1.6 and it fails with:

Error detected in "generate_events run_01"
write debug file /Users/omattelaer/Documents/workspace/2.6.4/pp2hh_loopsm/run_01_tag_1_debug.log
If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
MadGraph5Error : Could not download NNPDF30_nlo_as_0115 into /Users/omattelaer/Documents/HEPTools/lhapdf6//share/LHAPDF. Please try to install it manually.

This is because that particular PDF is not supported by lhapdf6.1.6.
I can not test for the moment with the latest version of lhapdf since their server seems down (which is weird since the hepforge website is up).

It is likely that this is linked to a problem of lhapdf (and/or) of the PDF set, but I would need to reproduce the error to be sure.
(And such that I can give more details to the lhapdf/author set )

Cheers,

Olivier

Peter Meiring (pmeiring) said : #2

Hi Olivier,

Thanks for your response.

Personally, I have installed LHAPDF6.2.1 manually and download the PDFs corresponding to this version in the share/LHAPDF folder of this installation. Then I configure mg5_configuration.txt to look in this installation and put the code of the PDF in the run card during generation.

I think it is super weird that everything works fine (including the systematics) for 100 events, but it breaks down for 10000 events.
So far I still haven't found a solution. Also Marco Zaro couldn't help me.

Please let me know if you have an idea of what I can do. Thanks in advance!
Cheers,

Peter Meiring

HI Peter,

The lhapdf website is responding today, so I did take a look:

But I have now open a call to lhapdf author since I have a segfault when I used their code...
(and I also face issue with their method to install lhapdf set)

> I think it is super weird that everything works fine (including the systematics) for 100 events, but it breaks down for 10000 events.
So far I still haven't found a solution. Also Marco Zaro couldn't help me.

Well this means that this issue should be related to one of the event that you generate.
One possibility is that lhapdf returns a segfault for one phase-space point and/or that you face a division by zero for one phase-space point (or something like that) .

Cheers,

Olivier

HI,

I actually not reproduced your problem today (finally got lhapdf working)

So not sure what goes wrong in your case.

Sorry,

Olivier

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