wp6.2-demonstator

Quick start on Archer2 (UK National Supercomputing Service)

git clone git@github.com:immerse-project/wp6.2-demonstrator.git
cd wp6.2-demonstrator
./setup

The setup script downloads nemo, compiles tools and configurations, and submits the scripts to generate domains and weights. Wait until all domains and weights are generated, then run NEMO.

To run NEMO:

cd nemo/cfgs/AGRIF_QCO/GSRIDGE36Zx2-GIBSTRA36Zx2/
../../../scripts/python/mkslurm_immerse -S 24 -s 16 -m 1 -C 3712 -g 0 -a n01-CLASS -q short -t 0-00:20:00 --gnu > run_nemo-short.slurm

There are a few variables to set in run_nemo-short.slurm. For example, the following variables will generate a 2-hour simulation split in 1-hour jobs.

# ========================================================
# PARAMETERS TO SET
# Restart frequency (<0 days, >0 hours)
FREQRST=1
# Simulation length (<0 days, >0 hours)
LENGTH=2
# Parent initial time step (0: infer from time.step)
# PARENT_IT000 != 0 -> auto-resubmission is switched OFF
PARENT_IT000=0
# Name of this script (to resubmit)
SCRIPTNAME=run_nemo-short.slurm
# =======================================================

Finally:

sbatch run_nemo-short.slurm

Example mkslurm_immerse settings for production runs:

../../../scripts/python/mkslurm_immerse -S 24 -s 16 -m 1 -C 5504 -g 0 -a n01-CLASS -j WP6.2 -t 1-00:00:00 --gnu > run_nemo.slurm

Setup

Parent: Global

Resolution:

• Horizontal: 1/12°
• Vertical: 75 levels

Child 1: Greenland-Scotland Ridge

Resolution:

• Horizontal: 1/36°
• Vertical: 150 levels

Child 2: Gibraltar Strait

Resolution:

• Horizontal: 1/36°
• Vertical: 150 levels