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Compiling on MacBook M1 chip using conda environment
Follow these steps to compile MOM6 on Apple Macbook M1 chips using conda environment. These steps should (most probably) help you in successfully installing and running MOM6.
Assumption is that you have miniconda installed and are familiar with installing libraries with conda.
conda create --name mommy
mommy is name of environment for MOM6. You can use a custom name.
conda config --set channel_priority strict
conda install -c conda-forge gfortran -y
conda install -c conda-forge netcdf4 -y
conda install -c conda-forge netcdf-fortran -y
conda install -c conda-forge mpich -y
Create a folder
mkdir ~/mom6_folder
cd ~/mom6_folder
Git clone MOM6_examples into it.
Create a Directory: mkdir Datasets And download datasets from the gfdl ftp server into it. Downloading might take 20-30 mins.
The appropriate make file is: mom6_folder/MOM6-examples/src/mkmf/templates/osx-gcc10.mk
Create a compile script
vi compileFMS.bash
and copy paste the following into it:
#!/bin/bash
mkdir -p build/fms/
(cd build/fms; rm -f path_names; \
../../src/mkmf/bin/list_paths -l ../../src/FMS; \
../../src/mkmf/bin/mkmf -t ../../src/mkmf/templates/osx-gcc10.mk -p libfms.a -c "-Duse_libMPI -Duse_netCDF" path_names)
(cd build/fms/; source ../env; make NETCDF=4 REPRO=1 libfms.a -j)
Compile:
bash compileFMS.bash
vi compileOcean.bash
copy the paste the following into it:
#!/bin/bash
mkdir -p build/ocean_only/
(cd build/ocean_only/; rm -f path_names; \
../../src/mkmf/bin/list_paths -l ./ ../../src/MOM6/{config_src/infra/FMS1,config_src/memory/dynamic_symmetric,config_src/drivers/solo_driver,config_src/external,src/{*,*/*}}/ ; \
../../src/mkmf/bin/mkmf -t ../../src/mkmf/templates/osx-gcc10.mk -o '-I../fms' -p MOM6 -l '-L../fms -lfms' path_names)
(cd build/ocean_only/; source ../env; make REPRO=1 MOM6 -j)
Compile:
bash compileOcean.bash
vi compileSIS2.bash
#!/bin/bash
mkdir -p build/ice_ocean_SIS2/
(cd build/ice_ocean_SIS2/; rm -f path_names; \
../../src/mkmf/bin/list_paths -l ./ ../../src/MOM6/config_src/{infra/FMS1,memory/dynamic_symmetric,drivers/FMS_cap,external} ../../src/MOM6/src/{*,*/*}/ ../../src/{atmos_null,coupler,land_null,ice_param,icebergs,SIS2,FMS/coupler,FMS/include}/)
(cd build/ice_ocean_SIS2/; \
../../src/mkmf/bin/mkmf -t ../../src/mkmf/templates/osx-gcc10.mk -o '-I../fms' -p MOM6 -l '-L../fms -lfms' -c '-Duse_AM3_physics -D_USE_LEGACY_LAND_' path_names )
(cd build/ice_ocean_SIS2/; source ../env; make REPRO=1 MOM6 -j)
Compile:
bash compileSIS2.bash
Restart your shell, or restart your laptop.
Launch the conda environment conda activate mommy
and add the executable to your path:
export PATH="/Users/$USER/mom6_files/MOM6-examples/build/ocean_only/:$PATH"
This has to be done every time you restart the shell or laptop. You can add the path to your .zshrc file to avoid adding path every time.
To run MOM6, type this in your project folder: Go to folder: > cd /Users/$USER/mom6_files/MOM6-examples/ocean_only/double_gyre
And then type:
/Users/$USER/mom6_files/MOM6-examples/build/ocean_only/MOM6
If the model runs, some lines will be displayed. If ocean.stats file contains lines similar to this:
Step, Day, Truncs, Energy/Mass, Maximum CFL, Mean sea level, Total Mass, Frac Mass Err
[days] [m2 s-2] [Nondim] [m] [kg] [Nondim]
0, 0.000, 0, En 1.42372419504191276E-13, CFL 0.00000, SL 4.2775E-12, Mass 5.28818E+18, Me 0.00E+00
MOM6 has been successfully compiled and can be run! Hurray! :D