Silam public distribution

This is a full-featured source code of the Silam model with striped revision history

BUILDING SILAM v5_9 in Ubuntu 20.04, 22.04, 24.04

Get the source code

$ git clone https://github.com/fmidev/silam-model.git

Install needed packages

$ sudo apt install make python gfortran libeccodes-dev libnetcdf-dev libnetcdff-dev liblapack-dev libblas-dev libbz2-dev libproj-dev

Compile the binary

$ cd silam-model/source/

$ make gnu

$ make

The latter command might requre a second try. Finally it should create a binary in ../bin, that can be launched as:

$ ../bin/silam_v5_9pub.gnu

Silam should run and complain about missing silam.ini. Then the binary is ready to use! You can test it with a test case from https://github.com/fmidev/silam-toypoint

Troubleshooting

In Ubuntu one might get an error message like

grib_api.mod not found

There are several versions of gfortran available in 20.04. Some libraries have headers in a location specific for "module version", where gfortran can't find them:

/usr/lib/x86_64-linux-gnu/fortran/gfortran-mod-15/

others have them in gfortran-version-specific locarion

/usr/lib/gcc/x86_64-linux-gnu/10/finclude/

or

/usr/lib/gcc/x86_64-linux-gnu/19/finclude/

A workaround would be to either explicitly call fortran with -I /usr/lib/x86_64-linux-gnu/fortran/gfortran-mod-15 (by adding this option to FFLAGS in build/options.gnu).

or add symlinks to the needed .mod files to your gfortran include directory (as root).

# ln -s /usr/lib/x86_64-linux-gnu/fortran/gfortran-mod-15/grib_api.mod /usr/lib/gcc/x86_64-linux-gnu/10/finclude/

or

# ln -s /usr/lib/x86_64-linux-gnu/fortran/gfortran-mod-15/grib_api.mod /usr/lib/gcc/x86_64-linux-gnu/9/finclude/

Exact command depends on your gcc version, which can be checked with $ gfortran -v

The issue has been reported at https://bugs.launchpad.net/ubuntu/+source/gcc-defaults/+bug/1883855 . Please consider confirming the bug if it affects you.