MadGraph5_aMC@NLO

MadG5: having problem with generate_events

Asked by Shibi Rajagopalan on 2012-08-20

Hi,

I am using MadGraph5 locally to produce pp -> (Z->vv~)+j events. For 10k events, there seemed to be no problem with the run, nor the LHE output, nor with the display. But when I tried 1E6 events I got the first log error that I post below. In addition, and not sure if it is related, I ran

./tests/test_manager.py [--verbose=1] [--logging=INFO]
and
./tests/test_manager.py -p A

and got the errors that post on the very bottom. Would you know what could be causing the error? Thanks for any help.

Shibi

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#************************************************************
#* MadGraph/MadEvent 5 *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 1.4.8.2 2012-07-30 *
#* *
#* The MadGraph Development Team - Please visit 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 "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/interface/extended_cmd.py", line 549, in onecmd
    return cmd.Cmd.onecmd(self, line)
  File "/usr/lib/python2.6/cmd.py", line 219, in onecmd
    return func(arg)
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/interface/madevent_interface.py", line 1737, in do_generate_events
    self.exec_cmd('combine_events', postcmd=False)
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/interface/extended_cmd.py", line 587, in exec_cmd
    stop = cmd.Cmd.onecmd(current_interface, line)
  File "/usr/lib/python2.6/cmd.py", line 219, in onecmd
    return func(arg)
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/interface/madevent_interface.py", line 2142, in do_combine_events
    nb_event = pat.search(output).groups()[0]
AttributeError: 'NoneType' object has no attribute 'groups'
Value of current Options:
              web_browser : None
              text_editor : None
          pythia-pgs_path :
                  td_path :
             delphes_path :
             cluster_type : condor
         madanalysis_path :
            cluster_queue : madgraph
       group_subprocesses : Auto
         fortran_compiler : None
                  nb_core : 2
      exrootanalysis_path :
               eps_viewer : None
                  timeout : 20
   automatic_html_opening : False
             cluster_mode : 0
             pythia8_path :
ignore_six_quark_processes : False
                 run_mode : 0

shibi@Number6:/MadGraph5_v1_4_8_2$ ./tests/test_manager.py [--verbose=1] [--logging=INFO]

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK
shibi@Number6:/MadGraph5_v1_4_8_2$ ./madgraph5/tests/test_manager.py -p A
bash: ./madgraph5/tests/test_manager.py: No such file or directory
shibi@Number6:/MadGraph5_v1_4_8_2$ ./tests/test_manager.py -p A
--2012-08-20 10:10:32-- http://madgraph.phys.ucl.ac.be/Downloads/pythia-pgs_V2.1.17.tar.gz
Resolving madgraph.phys.ucl.ac.be... 130.104.133.249
Connecting to madgraph.phys.ucl.ac.be|130.104.133.249|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2669008 (2.5M) [application/x-gzip]
Saving to: `pythia-pgs.tgz'

100%[=======================================================================================================================================>] 2,669,008 948K/s in 2.7s

2012-08-20 10:10:35 (948 KB/s) - `pythia-pgs.tgz' saved [2669008/2669008]

--2012-08-20 10:14:45-- http://madgraph.phys.ucl.ac.be/Downloads/MadAnalysis_V1.1.6.tar.gz
Resolving madgraph.phys.ucl.ac.be... 130.104.133.249
Connecting to madgraph.phys.ucl.ac.be|130.104.133.249|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 97932 (96K) [application/x-gzip]
Saving to: `MadAnalysis.tgz'

100%[=======================================================================================================================================>] 97,932 516K/s in 0.2s

2012-08-20 10:14:46 (516 KB/s) - `MadAnalysis.tgz' saved [97932/97932]

--2012-08-20 10:14:59-- http://madgraph.phys.ucl.ac.be/Downloads/td
Resolving madgraph.phys.ucl.ac.be... 130.104.133.249
Connecting to madgraph.phys.ucl.ac.be|130.104.133.249|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2252060 (2.1M) [text/plain]
Saving to: `td'

100%[=======================================================================================================================================>] 2,252,060 875K/s in 2.5s

2012-08-20 10:15:02 (875 KB/s) - `td' saved [2252060/2252060]

Running hep2lhe
pythia_events.lhe file generated, with simple jet clustering
Warning! Never use this file for detector studies!
Running hep2lhe
pythia_events.lhe file generated, with simple jet clustering
Warning! Never use this file for detector studies!
Running hep2lhe
pythia_events.lhe file generated, with simple jet clustering
Warning! Never use this file for detector studies!
......E..
** (evince:6788): WARNING **: Error stating file '/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/diagrams_0_epem_epem.eps': No such file or directory

** (evince:6788): WARNING **: Error setting file metadata: No such file or directory

** (evince:6790): WARNING **: Error stating file '/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/diagrams_0_gg_gg.eps': No such file or directory
.
** (evince:6790): WARNING **: Error setting file metadata: No such file or directory
......................
======================================================================
ERROR: test all the files
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/tests/acceptance_tests/test_model_equivalence.py", line 292, in setUp
    export_v4.UFO_model_to_mg4(model, self.output_path).build()
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/iolibs/export_v4.py", line 2869, in build
    self.write_all()
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/iolibs/export_v4.py", line 2892, in write_all
    self.create_ident_card()
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/iolibs/export_v4.py", line 3198, in create_ident_card
    fsock = self.open('ident_card.dat')
  File "/home/shibi/research/hep_programs/madgraph/MadGraph5_v1_4_8_2/madgraph/iolibs/export_v4.py", line 2880, in open
    fsock = open(file_path, 'w')
IOError: [Errno 2] No such file or directory: '/tmp/mg5_model_equivalence/ident_card.dat'

----------------------------------------------------------------------
Ran 32 tests in 1084.058s

FAILED (errors=1)

Question information

Language:: English Edit question

Status:: Answered

For:: MadGraph5_aMC@NLO Edit question

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Last query:: 2012-08-20

Last reply:: 2012-08-21

Link existing bug

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Johan Alwall (johan-alwall) said on 2012-08-20:

Hello Shibi,

The first error indicates that the event unweighting crashed when you ran 1e6 events. We usually recommend to limit the number of events asked for to 100k per run - you can easily generate larger statistics by using the multi_run feature (inside the bin/madevent command line interface). I'll check to see if we can avoid that this happens in the future, but using multi_run would at least be a quick fix for you.

Regarding the failed test, this is probably a platform-dependent error, and shouldn't affect any regular functionality. We'll take a look at that too.

Many thanks for your report!
Johan

Revision history for this message

Johan Alwall (johan-alwall) said on 2012-08-21:

Hello again Shibi,

I have fixed the first error, by allowing to read up to 5M weighted events in the unweighting step. This should be enough for (almost) any process to generate 1M events. The updated version is 1.4.8.3.

Thanks again for your feedback!
Johan

Revision history for this message

Shibi Rajagopalan (shibi-1729) said on 2012-08-21:

Thanks for the help. The multi_run feature worked very well.

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MadG5: having problem with generate_events

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