Basic concepts

How the GEOOCEAN group works on the SCI-UC cluster (ui.sci.unican.es). This complements, and does not replace, the official docs at doc.sci.unican.es — for anything cluster-wide (backup policy, account requests, helpdesk), that site is the source of truth. These pages only cover what's specific to how GEOOCEAN works.

General Support: soporte.sci@unican.es GeoOcean Support: tausiaj@unican.es

Storage (short version)

See Data & Storage for the full guide.

Path	Use for
/nfs/home/geocean/$USER	dotfiles, scripts, small configs, source code
/lustre/geocean/WORK/$USER	active job I/O, intermediate output
/lustre/geocean/DATA	shared, long-lived group datasets
/nfs/software/geocean/	group-built software, modulefiles
/scratch (per node, during a job)	fast scratch, wiped after the job ends

Slurm partitions

GEOOCEAN owns two partitions across eight nodes, geocean01–geocean08.

Partition	Nodes	Cores/node	Mem/core	Notes
geocean	geocean{02-06}	48	2GB default, unlimited max	general group queue
geocean_priority	geocean{01,07-08}	24	2GB default, 256GB max	reserved nodes — ask before defaulting here

# quick one-off job
sbatch --partition=geocean -t 00:10:00 --wrap "hostname; sleep 30"

# interactive shell on the group partition
srun --partition=geocean --pty bash

#!/bin/bash
#SBATCH -J swan_run
#SBATCH --partition=geocean
#SBATCH -N 1
#SBATCH --ntasks=48
#SBATCH --hint=nomultithread
#SBATCH --time=1-00:00:00
#SBATCH --mem-per-cpu=3G
#SBATCH -o %x-%j.out
#SBATCH -e %x-%j.err

module use /nfs/software/geocean/modulefiles
module load delft3d      # or whichever group module you need

srun ./run_model.sh

Monitoring & control:

squeue -u $USER                                 # your jobs
seff <jobid>                                     # CPU/mem efficiency, after completion
scancel <jobid>                                  # cancel one
scancel -u $USER                                 # cancel all of yours
srun --jobid <jobid> --overlap --pty bash -i     # attach to a running job

Group software

Group-built tools live under /nfs/software/geocean/<name>, published as Lmod modules:

module use /nfs/software/geocean/modulefiles
module avail
module load delft3d

Nine models are currently published this way — xbeach, delft3d, swan, swash, schism, sfincs, snapwave, lisflood, riskscape. See Software Modules for how to load and run each one, and Model Development if you need to build a new version or add a model — that page also covers the shared spack/conda toolchains under /nfs/software/geocean/.

/nfs/software/geocean/ also still has old, pre-models/ hand-built directories with the same names as the models above (e.g. a bare /nfs/software/geocean/swan/, with no models/ in the path) — these are legacy and being cleaned up, see Model Development. Always go through module load <name>, not a path guess.

New group tools go under /nfs/software/geocean/<toolname>. If others will reuse it, add a modulefile under /nfs/software/geocean/modulefiles/ — see Model Development for the convention.