Issue with chemistry preprocessor

[Paul F]

Hi all,

I am currently trying to add a new tracer to CAM-Chem in CESM2.1.5. My first step to do so is to copy the chem_mech.in file from pp_trop_mam4_vbs elsewhere and modify it to add the new aerosol.

However, when doing so I encounter the following error:

ERROR: Command: '/cluster/pfarron/cesm215/components/cam/bld/configure -s -fc_type gnu -ccsm_seq -dyn fv -hgrid 0.9x1.25 -usr_src /cluster/pfarron/cesm215/cime/scripts/new_tracer_test_215/SourceMods/src.cam -spmd -nosmp -ocn docn -phys cam6 -chem trop_strat_mam4_vbs -age_of_air_trcs -usr_mech_infile /cluster/pfarron/New_tracer/chem_mech_cesm215.in' failed with error 'b'*** Chem preprocessor FAILED.

I am confused as to what are the next steps I should take to solve this issue as the error does not tell much.

Does anyone have an idea of how to solve this ?

Thanks in advance for your help,

Best,
Paul

 

[Danny Leung]

Hi Paul-
Did you reset the setup and rebuild the case? Did this error occur when you rebuild the case?
Could you upload your error file and your edited chem_mech.in? I can take a look and see if I find anything.
Danny

 

[Paul F]

Hi Danny,

Thanks again for the help !

The error occurs when rebuilding the case. I did reset and rebuild the case with:
./case.setup --reset
./case.build --clean-all
./case.build

Even with the base "chem_mech.in" it does not work.

Please find attached my log file.

Best,
Paul

 

[Danny Leung]

Hi Paul-
Hmm, if even the original chem_mech.in doesn't work, then maybe the error is not related to your implementation of new tracers. Maybe you can try creating a new case directory that works and then change the CAM_CONFIG_OPTS there before rebuilding.
But I suspect if that's the issues... because it did say there is a chem preprocessor error. I do think it's something wrong inside the modified chem_mech.in. Could you send me the original chem_mech.in and the modified chem_mech.in? I can see if I spot anything obvious from there.
It might also be helpful for you to see if there is any useful information in the following fiile...
/cluster/work/climate/pfarron/cesm215/cime/scripts/new_tracer_test_215/Buildconf/camconf/chem_proc/chem_mech.doc
Danny