Scripts in this directory are illustrative examples of how to download and install IOIPSL, e.g.: 1) install_ioipsl_occigen.bash: everything is set for Occigen, just run: ./install_ioipsl_occigen.bash And output modules and library will be in ../../IOIPSL (with links in 'modipsl/lib' and 'modipsl/bin' for backward compatibility) 2) install_ioipsl_gfortran.bash, and install_ioipsl_pgf90.bash and install_ioipsl_ifort.bash are more general examples for installing IOIPSL on a machine with these compilers. For these you might need to ajust the location of the NetCDF library (see the NETCDF_HOME variable in the script) And you will need to set up arch files (which should match those of the GCM) to adequately compile the library Note that it is a good idea to install IOIPSL alongside LMDZ so that its version can be tracked (and potentialy updated), as it is downloaded from a different svn repository.