Errors in production: explanation

In this section, we comment on the errors observed in production and on the possible solutions that should be adopted to correct them. (page to be completed)

The errors observed in production are listed in the following: (twiki page with the job exit codes can be found here)

53

• Phase space integration or un-reweighting efficiency problems

• Missing text file for fragment

73

• Missing files at Premix stage

134

• G4 error

139 - segmentation violation

• Merging problems

• Missing gridpacks

• NanoAOD problem

8001

• nThread problem

8003

• Premix error

8021

• Merging problem

• Server not available

50664

• Timeout - due to incorrect tune

60450

• Merging error due to server problem

99303

• Stageout problem

99305

• pLHE problem with too many events for time given

99996

• Module problem at NanoAOD stage

• 53 :

  Powheg + JHUGen phase space integration or unreweighting efficiency problems (physics process related errors )

  lhe file contains fewer events than were requested ⇒ phase space problem. (physics process related errors )

  73 :

  Pythia8 :

  vanishing cross section (physics process related errors )

  134:

  Mg leading order patching problem, + nb of threads issue. (not physics process related errors

  139 : mainly : file access , request configuration issues. (not physics process related errors )

  8001:

  Only 1 request with this exit code , error related to premixing step (not physics process related errors )

  50115 :

  Mad + pythia8 : (not a physics process related problem). Issue observed in premixing step.

  Needs more investigation, for few other requests.