forrtl: severe (174): SIGSEGV, segmentation fault occurred

[liuty]

Hello everyone,
I'm using cesm version 2.1.3, create_newcase --res f19_g16 --compset FHIST, I tried to add some new chemistries in chem_mech.in to simulate,
CAM_CONFIG_OPTS： -phys cam6 -chem trop_strat_mam4_vbs; CAM_NML_USE_CASE：2010_trop_strat_vbs_cam6，
and the source code has been modified, some of the modified code refers to the attachment, and the error message "forrtl: severe (174): SIGSEGV, segmentation fault occurred" has been appearing during the run.
I had this issue in the base case simulation before this, but it was solved after adding "ulimit -s unlimited" to the script, although sometimes it takes two commits to get the result, but now adding "ulimit -s unlimited" and committing again still gives "forrtl: severe (174): SIGSEGV, segmentation fault occurred". cesm.log is attached below.
Any advice or suggestions would be greatly appreciated!

 

[hplin]

Thanks for writing. As this is a modification on top of the trop_strat_mam4_vbs chemical mechanism I am forwarding to the CAM-chem forum.

Since you had issues before in the base (I assume unmodified) simulation, I wonder if your compute job is running out of memory. Have you tried increasing the amount of memory allocated to the batch job? Additionally, I would check cesm.log in multiple case crashes -- if they're crashing on different locations it could be an indication of the job running out of memory, due to the increased number of chemical species added.

I hope this is helpful.