MadGraph5_aMC@NLO

run stoped and quit accidentally

Asked by Zoey Zhang

After I have LHE event, when I run pythia, the program stoped ,quit without any error and the RunWeb file is still under the folder. I ran on Mac M2. I have no idea how to fix this.

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MadGraph5_aMC@NLO Edit question
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Solved by:
Olivier Mattelaer
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Sihyun Jeon (shjeon) said : 		#1

Can't really tell you anything without an error log...

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Zoey Zhang (zoey1001) said : 		#2

The only information I have is what showed on terminal before shut down.

Generating 10000 events with run name run_01
survey run_01
INFO: compile directory
compile Source Directory
Using random number seed offset = 21
INFO: Running Survey
Creating Jobs
Working on SubProcesses
INFO: Compiling for process 1/2.
INFO: P1_gg_ttx
INFO: Compiling for process 2/2.
INFO: P1_qq_ttx
INFO: P1_gg_ttx
INFO: P1_qq_ttx
INFO: Idle: 1, Running: 1, Completed: 0 [ current time: 09h36 ]
INFO: Idle: 0, Running: 1, Completed: 1 [ 0.57s ]
INFO: Idle: 0, Running: 0, Completed: 2 [ 0.96s ]
INFO: End survey
refine 10000
Creating Jobs
INFO: Refine results to 10000
INFO: Generating 10000.0 unweighted events.
sum of cpu time of last step: 1 seconds
INFO: Effective Luminosity 23.76054126513002 pb^-1
INFO: need to improve 2 channels
- Current estimate of cross-section: 505.039 +- 3.8812625606237976
    P1_gg_ttx
    P1_qq_ttx
INFO: Idle: 5, Running: 8, Completed: 0 [ current time: 09h36 ]
INFO: Idle: 0, Running: 4, Completed: 9 [ 2.6s ]
INFO: Idle: 0, Running: 0, Completed: 13 [ 3.6s ]
INFO: Combining runs
sum of cpu time of last step: 7 seconds
INFO: finish refine
refine 10000 --treshold=0.9
No need for second refine due to stability of cross-section
INFO: Combining Events
combination of events done in 1.1681087017059326 s
  === Results Summary for run: run_01 tag: tag_1 ===

     Cross-section : 505.8 +- 0.7269 pb
     Nb of events : 10000

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Best Olivier Mattelaer (olivier-mattelaer) said : 		#3

Hi,

This is likely an lhadpf issue that is creating a segfault and make the full python to crash.
So you can either run with use_syst set to False in the run_card.

Or recompile lhapdf to be sure it is compiled for your current version of python (this is typically the issue)

Cheers,

Olivier

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Zoey Zhang (zoey1001) said : 		#4

Thanks Olivier Mattelaer, that solved my question.