not changed to rocky yet

Swan

SWAN is a third-generation wave model for obtaining realistic estimates of wave parameters in coastal areas, lakes and estuaries from given wind, bottom and current conditions. The model is based on the wave action balance equation with sources and sinks. SWAN allows to use two types of grids (structured and unstructured) and nesting approach. SWAN is not recommended to use in on ocean scales.

Manual can be found here and more about SWAN settings can be found here.



Quickstart


  1. Load the module

     module load green/all
     module load Swan
    
  2. Copy the examples

     cp -r $SWANDIR/../Examples Swan-examples
    
  3. Unpack one example

     cd Swan-examples
     tar xf refrac.tar.gz
     cd refrac
    
  4. Download the swan.slurm script

     curl https://docs.hpc.taltech.ee/engineering/swan.slurm
    
  5. Adjust ntasks, nodes and cpus-per-task submit it:

     sbatch swan.slurm
    

    Contents of the swan.slurm:

    #!/bin/bash
    #SBATCH --partition=green-ib  ### Partition
    #SBATCH --job-name=Swan   ### Job Name           -J
    #SBATCH --time=00:10:00       ### WallTime           -t
    #SBATCH --nodes=1             ### Number of Nodes    -N 
    #SBATCH --ntasks-per-node=2   ### Number of tasks (MPI processes)
    #SBATCH --cpus-per-task=4     ### Number of threads per task (OMP threads)
    #SBATCH --mem-per-cpu=100     ### Min RAM required in MB
    
    #set up enviroment    
    module load green/all
    module load Swan
    
    export OMP_NUM_THREADS=$SLURM_CPUS_PER_TASK        
    MACHINEFILE="machinefile"
    
    # Generate Machinefile for mpi such that hosts are in the same order as if run via srun
    srun -l /bin/hostname | sort -n | awk '{print $2}' > $MACHINEFILE
    
    # do the swan simulation
    swanrun -input a11refr.swn -mpi $SLURM_NTASKS -omp=$SLURM_CPUS_PER_TASK
    
    #rm $MACHINEFILE