Error detected in "generate_events run_01"

The debug.log is
#************************************************************
#* MadGraph5_aMC@NLO/MadEvent *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 3.3.1 2021-12-04 *
#* *
#* 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 "/root/MG5_aMC_v3_3_1/madgraph/interface/extended_cmd.py", line 1544, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/extended_cmd.py", line 1493, in onecmd_orig
    return func(arg, **opt)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/madevent_interface.py", line 2362, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/common_run_interface.py", line 7295, in new_fct
    original_fct(obj, *args, **opts)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/madevent_interface.py", line 2402, in run_generate_events
    postcmd=False)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/extended_cmd.py", line 1573, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/extended_cmd.py", line 1493, in onecmd_orig
    return func(arg, **opt)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/madevent_interface.py", line 3259, in do_survey
    jobs, P_zero_result = ajobcreator.get_helicity()
  File "/root/MG5_aMC_v3_3_1/madgraph/madevent/gen_ximprove.py", line 148, in get_helicity
    self.cmd.compile(['madevent_forhel'], cwd=Pdir)
  File "/root/MG5_aMC_v3_3_1/madgraph/interface/extended_cmd.py", line 1639, in compile
    return misc.compile(nb_core=self.options['nb_core'], *args, **opts)
  File "/root/MG5_aMC_v3_3_1/madgraph/various/misc.py", line 553, in compile
    raise MadGraph5Error(error_text)
madgraph.MadGraph5Error: A compilation Error occurs when trying to compile /root/MG5_aMC_v3_3_1/Launch/back_3lv_Gen6/SubProcesses/P1_qq_tamtaptapvlqq.
The compilation fails with the following output message:
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c driver.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c myamp.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c genps.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c unwgt.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c setcuts.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c get_color.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c cuts.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c cluster.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c reweight.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c initcluster.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c addmothers.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c setscales.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c idenparts.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c dummy_fct.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig16.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig8.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig10.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig12.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig15.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig5.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig41.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig33.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig1.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig24.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig37.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig28.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig40.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig27.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig4.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig34.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig22.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig9.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig13.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig38.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig26.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig43.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig20.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig21.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig36.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig14.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig25.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig18.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig3.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig6.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig44.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig32.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig31.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig2.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig35.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig39.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig19.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig7.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig30.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig42.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig17.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig11.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig23.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig29.f -I../../Source/
    gfortran -w -fPIC -O -ffixed-line-length-132 -w -c auto_dsig.f -I../../Source/
    gfortran: 编译器内部错误：已杀死(程序 f951)
    Please submit a full bug report,
    with preprocessed source if appropriate.
    See <http://bugzilla.redhat.com/bugzilla> for instructions.
    make: *** [genps.o] 错误 4
    make: *** 正在等待未完成的任务....

Please try to fix this compilations issue and retry.
Help might be found at https://answers.launchpad.net/mg5amcnlo.
If you think that this is a bug, you can report this at https://bugs.launchpad.net/mg5amcnlo
                              Run Options
                              -----------
               stdout_level : 20 (user set)

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
                   run_mode : 2
              cluster_queue : None (user set)
               cluster_time : None (user set)
               cluster_size : 100
             cluster_memory : 100 (user set)
                    nb_core : 6 (user set)
          cluster_temp_path : None

                      Configuration Options
                      ---------------------
               pythia8_path : /root/MG5_aMC_v3_3_1/HEPTools/pythia8 (user set)
                  hwpp_path : None (user set)
                thepeg_path : None (user set)
                 hepmc_path : None (user set)
           madanalysis_path : None (user set)
          madanalysis5_path : /root/MG5_aMC_v3_3_1/HEPTools/madanalysis5/madanalysis5 (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : /root/MG5_aMC_v3_3_1/Delphes (user set)
        exrootanalysis_path : None (user set)
               syscalc_path : None (user set)
                     lhapdf : /root/MG5_aMC_v3_3_1/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                 lhapdf_py2 : /root/MG5_aMC_v3_3_1/HEPTools/lhapdf6/bin/lhapdf-config (user set)
                 lhapdf_py3 : /root/MG5_aMC_v3_3_1/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                    timeout : 60
              f2py_compiler : None
          f2py_compiler_py2 : None
          f2py_compiler_py3 : None
                web_browser : None
                 eps_viewer : None
                text_editor : None
           fortran_compiler : None
               cpp_compiler : None
                auto_update : 7 (user set)
               cluster_type : condor
      cluster_status_update : (600, 30)
           cluster_nb_retry : 1
         cluster_local_path : None
         cluster_retry_wait : 300

According to the error message, the bug is in gfortran not in our code.

So my suggestion would be to update your compiler in order to check if that issue has been fixed in more recent version of the compiler. I have seen similar report in the past and typically this was with quite old compiler.

Keep me in touch if this fix the problem or not.

Cheers,

Olivier

Thank you for your reply.
I used gcc version 4.8.5 before, but now I have upgraded it to 8.3.1, but the same problem still appears.
What should I do next？

Cheers,

Chenzhiliang

I'm testing with gcc10.2

Will see if I also have an issue.

Cheers,

Olivier

> On 14 Apr 2022, at 16:10, chenzhiliang <email address hidden> wrote:
>
> Question #701352 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/701352
>
> Status: Answered => Open
>
> chenzhiliang is still having a problem:
> Thank you for your reply.
> I used gcc version 4.8.5 before, but now I have upgraded it to 8.3.1, but the same problem still appears.
> What should I do next？
>
> Cheers,
>
> Chenzhiliang
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

No issue here,
Now I have tracked the amount of RAM used and it is not that small. (~2Gb of RAM only used by the python handling of the code, for the generation)

So on system with only 4Gb of RAM, you might want to run via ./bin/generate_events rather than using the launch command directly after the output command.

But I have really no clue if the gfortran crash is memory related or not.

Cheers,

Olivier