custom pt cuts and "launch ends with non zero status: 1. Stop all computations" error

Asked by Alfredo Glioti on 2019-07-26

Dear all,

this question is similar to https://answers.launchpad.net/mg5amcnlo/+question/446723. Sorry for creating a new thread, but I have the same problem as the original question and the fix suggested there does not seem to help. At least not in a straightforward way.

I am generating a NLO process

 p p > mu+ mu- e+ ve [QCD]

and I am trying to generate events for which the total pT of the two muons is above say 250 GeV, but it often crashes. I tried to implement the solution on the linked question (set tau_min_j to 500 GeV) but it still crashes.

debug log:

#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 5.2.6.5 20xx-xx-xx *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* and *
#* http://amcatnlo.cern.ch *
#* *
#************************************************************
#* *
#* Command File for aMCatNLO *
#* *
#* run as ./bin/aMCatNLO.py filename *
#* *
#************************************************************
launch
Traceback (most recent call last):
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/extended_cmd.py", line 1514, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/extended_cmd.py", line 1463, in onecmd_orig
    return func(arg, **opt)
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/amcatnlo_run_interface.py", line 1679, in do_launch
    evt_file = self.run(mode, options)
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/amcatnlo_run_interface.py", line 1910, in run
    self.run_all_jobs(jobs_to_run,mint_step,fixed_order=False)
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/amcatnlo_run_interface.py", line 2116, in run_all_jobs
    self.wait_for_complete(run_type)
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/amcatnlo_run_interface.py", line 4657, in wait_for_complete
    self.cluster.wait(self.me_dir, update_status)
  File "/home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/bin/internal/cluster.py", line 822, in wait
    raise Exception, self.fail_msg
Exception: program /home/aglioti/Desktop/MG5_aMC_v2_6_5/taumintestsm/SubProcesses/P0_udx_mupmumepve/ajob1 5 F 0 2 launch ends with non zero status: 1. Stop all computation
Value of current Options:
              text_editor : None
              web_browser : None
        cluster_temp_path : None
                  timeout : 60
       cluster_local_path : None
            cluster_queue : None
         madanalysis_path : None
                   lhapdf : lhapdf-config
             cluster_size : 100
           cluster_memory : None
                    pjfry : None
    cluster_status_update : (600, 30)
             cluster_time : None
            f2py_compiler : None
                    ninja : /home/aglioti/Desktop/MG5_aMC_v2_6_5/HEPTools/lib
               hepmc_path : None
             pythia8_path : None
                hwpp_path : None
   automatic_html_opening : False
       cluster_retry_wait : 300
             stdout_level : None
          pythia-pgs_path : None
                 mg5_path : /home/aglioti/Desktop/MG5_aMC_v2_6_5
                  td_path : None
             delphes_path : None
              thepeg_path : None
             cluster_type : condor
        madanalysis5_path : None
      exrootanalysis_path : None
         fortran_compiler : None
                  nb_core : 32
                  collier : None
              auto_update : 7
         cluster_nb_retry : 1
               eps_viewer : None
             syscalc_path : None
                    golem : None
             cpp_compiler : None
      notification_center : True
                 run_mode : 2
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.6.5 2018-02-03 *
#* *
#* 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 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~
import model loop_sm
generate p p > mu+ mu- e+ ve [QCD]
output taumintestsm
######################################################################
## 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 aMC@NLO *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/conventions: *
# *
# Lines starting with a hash (#) are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# Some of the values of variables can be list. These can either be *
# comma or space separated. *
# *
# To display additional parameter, you can use the command: *
# update to_full *
#***********************************************************************
#
#*******************
# Running parameters
#*******************
#
#***********************************************************************
# Tag name for the run (one word) *
#***********************************************************************
  tag_1 = run_tag ! name of the run
#***********************************************************************
# Number of LHE events (and their normalization) and the required *
# (relative) accuracy on the Xsec. *
# These values are ignored for fixed order runs *
#***********************************************************************
 10000 = nevents ! Number of unweighted events requested
 -1.0 = req_acc ! Required accuracy (-1=auto determined from nevents)
 -1 = nevt_job! Max number of events per job in event generation.
                 ! (-1= no split).
#***********************************************************************
# Normalize the weights of LHE events such that they sum or average to *
# the total cross section *
#***********************************************************************
 average = event_norm ! valid settings: average, sum, bias
#***********************************************************************
# Number of points per itegration channel (ignored for aMC@NLO runs) *
#***********************************************************************
 0.01 = req_acc_FO ! Required accuracy (-1=ignored, and use the
                     ! number of points and iter. below)
# These numbers are ignored except if req_acc_FO is equal to -1
 5000 = npoints_FO_grid ! number of points to setup grids
 4 = niters_FO_grid ! number of iter. to setup grids
 10000 = npoints_FO ! number of points to compute Xsec
 6 = niters_FO ! number of iter. to compute Xsec
#***********************************************************************
# Random number seed *
#***********************************************************************
 0 = iseed ! rnd seed (0=assigned automatically=default))
#***********************************************************************
# Collider type and energy *
#***********************************************************************
 1 = lpp1 ! beam 1 type (0 = no PDF)
 1 = lpp2 ! beam 2 type (0 = no PDF)
 7000.0 = ebeam1 ! beam 1 energy in GeV
 7000.0 = ebeam2 ! beam 2 energy in GeV
#***********************************************************************
# PDF choice: this automatically fixes also alpha_s(MZ) and its evol. *
#***********************************************************************
 nn23nlo = pdlabel ! PDF set
 244600 = lhaid ! If pdlabel=lhapdf, this is the lhapdf number. Only
              ! numbers for central PDF sets are allowed. Can be a list;
              ! PDF sets beyond the first are included via reweighting.
#***********************************************************************
# Include the NLO Monte Carlo subtr. terms for the following parton *
# shower (HERWIG6 | HERWIGPP | PYTHIA6Q | PYTHIA6PT | PYTHIA8) *
# WARNING: PYTHIA6PT works only for processes without FSR!!!! *
#***********************************************************************
  HERWIG6 = parton_shower
  1.0 = shower_scale_factor ! multiply default shower starting
                                  ! scale by this factor
#***********************************************************************
# Renormalization and factorization scales *
# (Default functional form for the non-fixed scales is the sum of *
# the transverse masses divided by two of all final state particles *
# and partons. This can be changed in SubProcesses/set_scales.f or via *
# dynamical_scale_choice option) *
#***********************************************************************
 False = fixed_ren_scale ! if .true. use fixed ren scale
 False = fixed_fac_scale ! if .true. use fixed fac scale
 91.118 = muR_ref_fixed ! fixed ren reference scale
 91.118 = muF_ref_fixed ! fixed fact reference scale
 -1 = dynamical_scale_choice ! Choose one (or more) of the predefined
           ! dynamical choices. Can be a list; scale choices beyond the
           ! first are included via reweighting
 1.0 = muR_over_ref ! ratio of current muR over reference muR
 1.0 = muF_over_ref ! ratio of current muF over reference muF
#***********************************************************************
# Reweight variables for scale dependence and PDF uncertainty *
#***********************************************************************
 1.0, 2.0, 0.5 = rw_rscale ! muR factors to be included by reweighting
 1.0, 2.0, 0.5 = rw_fscale ! muF factors to be included by reweighting
 True = reweight_scale ! Reweight to get scale variation using the
            ! rw_rscale and rw_fscale factors. Should be a list of
            ! booleans of equal length to dynamical_scale_choice to
            ! specify for which choice to include scale dependence.
 False = reweight_PDF ! Reweight to get PDF uncertainty. Should be a
            ! list booleans of equal length to lhaid to specify for
            ! which PDF set to include the uncertainties.
#***********************************************************************
# Store reweight information in the LHE file for off-line model- *
# parameter reweighting at NLO+PS accuracy *
#***********************************************************************
 False = store_rwgt_info ! Store info for reweighting in LHE file
#***********************************************************************
# ickkw parameter: *
# 0: No merging *
# 3: FxFx Merging - WARNING! Applies merging only at the hard-event *
# level. After showering an MLM-type merging should be applied as *
# well. See http://amcatnlo.cern.ch/FxFx_merging.htm for details. *
# 4: UNLOPS merging (with pythia8 only). No interface from within *
# MG5_aMC available, but available in Pythia8. *
# -1: NNLL+NLO jet-veto computation. See arxiv:1412.8408 [hep-ph]. *
#***********************************************************************
 0 = ickkw
#***********************************************************************
#
#***********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma). Determines which resonances are *
# written in the LHE event file *
#***********************************************************************
 15.0 = bwcutoff
#***********************************************************************
# Cuts on the jets. Jet clustering is performed by FastJet. *
# - When matching to a parton shower, these generation cuts should be *
# considerably softer than the analysis cuts. *
# - More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
  1.0 = jetalgo ! FastJet jet algorithm (1=kT, 0=C/A, -1=anti-kT)
  0.7 = jetradius ! The radius parameter for the jet algorithm
 10.0 = ptj ! Min jet transverse momentum
 -1.0 = etaj ! Max jet abs(pseudo-rap) (a value .lt.0 means no cut)
#***********************************************************************
# Cuts on the charged leptons (e+, e-, mu+, mu-, tau+ and tau-) *
# More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
  0.0 = ptl ! Min lepton transverse momentum
 -1.0 = etal ! Max lepton abs(pseudo-rap) (a value .lt.0 means no cut)
  0.0 = drll ! Min distance between opposite sign lepton pairs
  0.0 = drll_sf ! Min distance between opp. sign same-flavor lepton pairs
  0.0 = mll ! Min inv. mass of all opposite sign lepton pairs
 60.0 = mll_sf ! Min inv. mass of all opp. sign same-flavor lepton pairs
#***********************************************************************
# Photon-isolation cuts, according to hep-ph/9801442. When ptgmin=0, *
# all the other parameters are ignored. *
# More specific cuts can be specified in SubProcesses/cuts.f *
#***********************************************************************
 20.0 = ptgmin ! Min photon transverse momentum
 -1.0 = etagamma ! Max photon abs(pseudo-rap)
  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)
#***********************************************************************
# Cuts associated to MASSIVE particles identified by their PDG codes. *
# All cuts are applied to both particles and anti-particles, so use *
# POSITIVE PDG CODES only. Example of the syntax is {6 : 100} or *
# {6:100, 25:200} for multiple particles *
#***********************************************************************
  {} = pt_min_pdg ! Min pT for a massive particle
  {} = pt_max_pdg ! Max pT for a massive particle
  {} = mxx_min_pdg ! inv. mass for any pair of (anti)particles
#***********************************************************************
# For aMCfast+APPLGRID use in PDF fitting (http://amcfast.hepforge.org)*
#***********************************************************************
 0 = iappl ! aMCfast switch (0=OFF, 1=prepare grids, 2=fill grids)
#***********************************************************************

---------

cuts.f:

c$$$ endif
c$$$ endif
c$$$ enddo
c

      if(((P(1,3)+P(1,4))**2d0+(P(2,3)+P(2,4))**2d0).lt.(0**2d0))then
  passcuts_user=.false.
  return
      endif

      if(((P(0,3)+P(0,4))**2d0-((P(1,3)+P(1,4))**2d0)-((P(2,3)+P(2,4))**2d0)-((P(3,3)+P(3,4))**2d0)).gt.(120**2d0))then
  passcuts_user=.false.
  return
      endif

      if(((P(0,5)+P(0,6))**2d0-((P(1,5)+P(1,6))**2d0)-((P(2,5)+P(2,6))**2d0)-((P(3,5)+P(3,6))**2d0)).gt.(120**2d0))then
  passcuts_user=.false.
  return
      endif

      if(((P(0,5)+P(0,6))**2d0-((P(1,5)+P(1,6))**2d0)-((P(2,5)+P(2,6))**2d0)-((P(3,5)+P(3,6))**2d0)).lt.(60**2d0))then
  passcuts_user=.false.
  return
      endif

      return
      end

--------

setcuts.f:

            enddo
            stot = 4d0*ebeam(1)*ebeam(2)
            tau_Born_lower_bound=taumin(iFKS,ichan)**2/stot
            taumin_j(iFKS,ichan)=500d0
            tau_lower_bound=taumin_j(iFKS,ichan)**2/stot
c
c Also find the minimum lower bound if all internal s-channel particles
c were on-shell

Thanks for you help,

Alfredo

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Rikkert Frederix Edit question
Last query:
2019-07-26
Last reply:
2019-07-30
Rikkert Frederix (frederix) said : #1

Dear Alfredo,

There are a couple of ways to get around this problem. Which is the best, depends a bit on what your goal is. Is it a NLO+PS calculation (i.e., with matching to the parton shower), or simply a fixed order NLO one?

I assume that you want to get results matched to the shower.

0. Keep in mind that the cuts are applied at the level of the matrix elements, *before* the shower is attached. The shower will kick the leptons around a bit, so the transverse momentum cut must be much smaller as what you apply at the analysis level. Is that what you want?

1. Use less stringent cuts, but generate many more events, so that after the analysis there are still enough events passing your analysis cuts.

2. Use MadSpin: if you want your bosons to be close to on-shell and expect off-shell and non-resonant effects to be small, generate pp>WZ and decay the bosons using MadSpin.

3. Instead of having a hard cut at the generation level, to enhance statistics in the tail define a 'bias_weight_function()', see towards the end of the cuts.f file. This is probably the most effective and efficient way of generating enough events. However, with this option each generated event comes with a weight which you'll have to keep track of during your whole simulation/analysis chain.

If, instead, you are calculation fixed-order results, option 1 and 3 from above work as well.

Hope this helps.

Best,
Rikkert

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