MPAS

Template:Unsupported: CLEX CMS does not ordinarily provide support for this configuration, either due to its age or it being outside the scope of the Centre's research. Please contact us before starting any major work with this configuration

The Model for Prediction Across Scales (MPAS) is a collaborative project for developing atmosphere, ocean and other earth-system simulation components for use in climate, regional climate and weather studies. [1].

MPAS-Atmosphere

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Building on Gadi

MPAS7 on Gadi requires no code modifications, although you will need to install its dependency PIO

Installing PIO

module load intel-compiler openmpi
module load netcdf/4.7.3p pnetcdf

# Installation directory, set as desired
export PIO_DIR=/scratch/$PROJECT/$USER/pio

wget https://github.com/NCAR/ParallelIO/releases/download/pio2_5_2/pio-2.5.2.tar.gz
tar xvf pio-2.5.2.tar.gz
cd pio-2.5.2

CC=mpicc FC=mpif90 ./configure --enable-fortran --prefix $PIO_DIR && make check

# I see an error in 'test_pioc'

make install

cd ..

Building MPAS

module load intel-compiler openmpi
module load netcdf/4.7.3p pnetcdf

git clone https://github.com/MPAS-Dev/MPAS-Model

cd MPAS-Model

# Set to wherever you installed PIO
export PIO=$PIO_DIR

make ifort CORE=atmosphere USE_PIO2=true

make clean CORE=init_atmosphere

make ifort CORE=init_atmosphere USE_PIO2=true

Running

See the User's Guide for details on how to run the model. A number of idealised test cases as well as meshes for different resolutions are available from the MPAS download site. The top-level directory has all of the TBL, DBL and namelist files required to run MPAS

You will need to download or generate a mesh file, the default example uses the 120km mesh.

The central WPS_GEOG data files may be used, set 'config_geog_data_path' in namelist.init_atmosphere to '/g/data/sx70/data/WPS_GEOG_20190418/' (you will need to join the sx70 group)

The executable 'init_atmosphere_model' must be run first, before 'atmosphere_model' is run.

Sample PBS scripts to run the model (adjust the number of CPUs to be appropriate for your configuration):

run_init_atmos.pbs

#!/bin/bash
#PBS -l ncpus=1
#PBS -l mem=4gb
#PBS -l walltime=1:00:00
#PBS -l jobfs=50gb
#PBS -l wd
#PBS -l storage=gdata/sx70
#PBS -W umask=0022

set -e
ulimit -s unlimited

# Add your PIO library's 'lib' directory here
export LD_LIBRARY_PATH=/scratch/$PROJECT/$USER/pio/lib:$LD_LIBRARY_PATH

# Create initial conditions
# Note if data is being interpolated this can't be run using MPI
./init_atmosphere_model

run_atmos.pbs

#!/bin/bash
#PBS -l ncpus=4
#PBS -l mem=16gb
#PBS -l walltime=1:00:00
#PBS -l jobfs=50gb
#PBS -l wd
#PBS -l storage=gdata/sx70
#PBS -W umask=0022

set -e
ulimit -s unlimited
module load openmpi

# Add your PIO library's 'lib' directory here
export LD_LIBRARY_PATH=/scratch/$PROJECT/$USER/pio/lib:$LD_LIBRARY_PATH

# Run the model
mpirun ./atmosphere_model

Resources

MPAS Home Page

Atmosphere User's Guide

Main MPAS Github