Hi all
My suite has failed to run atmos_main, and returning a “ERROR in UKCA_TRACERS_COPY_FROM_UM: negative tracer values”. I have already got several months of simulations without having this error and was wondering where it is coming from.
I see in a previous post that it might be possible to set BITCOMP_NRUN=False. or to perturb the dump. I was wondering what you be the best method in my case, and how to perturb the dump.
Best
Paul-Arthur
Hi Paul-Arthur
To perturb the dump: on ARCHER2
mv <dump> <dump>.orig
then use this batch script as a template: /work/y07/shared/umshared/scripts/submit_perturb.slurm
to run on your dump (change HISTORY_DATA, DUMP and account)
Grenville
The negative tracer values error came from atmos_ens0 (that’s where the message appeared anyway), so try perturbing
/work/n02/n02/pmonerie/cylc-run/u-cw675/share/data/History_Data/cw675_ens0a.da19900901_00
Grenville
Hi Grenville
Thank you, it worked! I have been able to run the suite after perturbing the dump.
This post was also useful for this issue: HadGEM3 crash (from NEMO) - #3 by racheldiamond
Paul-Arthur