Merge multiple files

[malmans2]

We are only missing a script to merge multiple files.
I haven't tried it yet, but there's an open issue in the NEMO gitlab repo:
https://forge.nemo-ocean.eu/nemo/nemo/-/issues/14

Not sure if it has been fixed yet.

[malmans2]

@atb299 @jdha I quickly tried merging multiple files, and it worked. I think the issue above has been fixed upstream.

Merging files created with XIOS multiple_file is the only thing that is missing in the workflow. I wanted to add and integrate scripts to do that, but it looks like Archer2 is down at the moment. Something similar is done here, although probably you already have scripts to merge multiple files:

wp6.2-demonstrator/scripts/build_domains.slurm

Lines 27 to 37 in ed7e2be

	# Rebuild
	for FILE in *namelist_cfg; do
	STRING=$(basename -- "$FILE")
	PATTERN="domain_cfg"
	PREFIX="${STRING/namelist_cfg/$PATTERN}"
	if ./rebuild_nemo -n nam_rebuild -p "$SLURM_NTASKS" -d 1 -x 64 -y 64 -z 1 -t 1 "$PREFIX" "$SLURM_NTASKS"; then
	rm "${PREFIX}"_[0-9][0-9][0-9][0-9].nc
	else
	rm "$PREFIX".nc
	fi
	done

We should probably also make use of --multi-prog as shown here: https://accowa.github.io/n01-pages/postproc/rebuild_nemo_example/