Postproc_nemo failure out of memory

Unified Model
6

UPDATE: problem solved!

The ARCHER2 Helpdesk got back to me and said they applied a patch to the Lustre filesystem over the past few days.

I tested this with several suites and the postproc now seems to be running fine again on the serial nodes! One additional thing I had to to do was to request a bit more memory for the postproc jobs (the default is just below 2GB). 10 GB works fine for me, but I did not test other values.

If anybody runs into the same OOM error, I just added the memory request to the postproc resources in the archer2.rc configuration:

    [[POSTPROC_RESOURCE]]
        inherit = HPC_SERIAL
        pre-script = """
                     module load postproc
                     module list 2>&1
                     ulimit -s unlimited
                     """
        [[[directives]]]
            --mem=10G

Best wishes,
Seb