NEMOCFG/eORCA025/eORCA025.L121-LUCIA00/README.md

Running eORCA025.L121-LUCIA00

Source code

Download NEMO code 4.2.0

git clone --branch 4.2.0 https://forge.nemo-ocean.eu/nemo/nemo.git nemo_4.2.0

Extract and install XIOS (trunk)

svn co http://forge.ipsl.jussieu.fr/ioserver/svn/XIOS/trunk xios_trunk

revision 2482

Setup

module load craype-x86-milan
module load PrgEnv-gnu/8.3.3
module load netCDF-Fortran/4.6.0-gompi-2022a
module load Perl/.5.34.1-GCCcore-11.3.0

Compile XIOS with the arch files from this folder

./make_xios --arch lucia_gnu -j 4

Compile NEMO

• with this arch file > check the path to your XIOS
• with this cfg folder > open and add a line to nemo_4.2.0/cfgs/ref_cfgs.txt :

ORCA025_ICE OCE ICE

./makenemo -m 'lucia_gnu' -r ORCA025_ICE -n 'MY_ORCA025_ICE' -j '4'

Data

I prepared all the input files in /gpfs/scratch/acad/ecearth/pbarriat/data/nemo directory. I set up the namelist and the launch script according to the name and path of the input files.

Very first try

CC	Release	RES	XIOS	NEMO	#NODES	Optimization	WTIME per MONTH
NE4_00.sh	foss 2022a	e025	8	592	6	-O3	45min
NE4_01.sh	foss 2022a	e025	9	1191	12	-O3	21min

• 1 year (1979), restart every month
• forcing JRA55 no_leap 3h
• nem_time_step_sec=1350 and lim_time_step_sec=1350

Initial data:

Goutorbe_ghflux.nc
eORCA025_ghflux_v2.0_c3.0_weights_bilin_nohls.nc
eORCA025_iwm_b0.2_v1.0_nohls.nc
eORCA025.L121_domain_cfg_b0.5_c3.0_d1.0_nohls_clean.nc
eORCA025_runoff_b0.2_v0.0_nohls.nc
eORCA025_calving_b0.2_v2.3_nohls.nc
eORCA025_ttv_b0.2_v0.0_nohls.nc
eORCA025_bfr2d_v0.2_nohls.nc
eORCA025_shlat2d_v0.2_nohls.nc
eORCA025_distcoast_b0.2_v0.0_nohls.nc
eORCA025.L121-empc_nohls.nc
eORCA025.L121_WOA2018_c3.0_d1.0_v19812010.5.2_nohls.nc
chlorophyl_v0.0.nc
eORCA025_chlorophyl_v0.0_c3.0_weights_bilin_nohls.nc
eORCA025_sss_WOA2018_c3.0_v19812010.5.1_nohls.nc
eORCA025_seaice_c3.0_v19802004.0_nohls.nc

Change the forcing

CC	Release	RES	XIOS	NEMO	#NODES	Optimization	WTIME per MONTH
NE4_02.sh	foss 2022a	e025	8	592	6	-O3	45min
NE4_03.sh	foss 2022a	e025	10	2390	24	-O3	13min

• forcing ERA5 leap 3h