mitgcm_configs

Set of MITgcm runs

install MITgcm from scratch

• Installation prerequisites on any debian-like system (ubuntu, etc.) sudo apt-get install gfortran sudo apt-get install libnetcdff-dev libnetcdf-dev sudo apt-get install python-numpy python-matplotlib

• Dowload MITgcm in a local directory

git clone https://github.com/MITgcm/MITgcm.git
cd MITgcm
echo "  " >> ~/.bashrc  # empty line (safety)
echo "export MITGCM_ROOTDIR=$PWD" >> ~/.bashrc
echo "export PATH=\$PATH:\$MITGCM_ROOTDIR/tools" >> ~/.bashrc
echo "export PATH=\$PATH:\$MITGCM_ROOTDIR/utils/python/MITgcmutils/scripts" >> ~/.bashrc
cd ..
source ~/.bashrc

• In a separate repository get mitgcm_configs

git clone https://github.com/bderembl/mitgcm_configs
cd mitgcm_configs

Run a configuration

• In each configuration (e.g. for 'corner' here)

cd corner	
mkdir build
mkdir run

• Build mitgcm

At this point you need a fortran compiler (and openmpi for big runs) In most HPC configurations, you will need to load the appropriate module. Check

module avail

and load the compiler you want (something like):

module load gnu
module load openmpi

cd build
genmake2 -mods=../code (-mpi)
make depend
make -j4

(Use the '-mpi' option for parallel runs. If genmaka2 returns an erros, you may have to adjust set the variable MPI_HOME in your .bashrc; use the command which mpif77 to check where this folder is)

• Create init files

cd ../input
python mygendata.py

• Run the model

cd ../run
ln -s ../input/* .
cp ../build/mitgcmuv .
./mitgcmuv