Download the proper GAMS version from https://www.gams.com/latest/ (notice that older versions are found in the Previous Distributions box). Notice that the GNU/Linux Systems version is required for HPC systems.

Manual installation of GAMS

GAMS is shipped through an executable file, which will expand all files into a single directory.

Create a directory for the new version. Example for version 42.3.0:

mkdir -p /opt/psi/Tools/GAMS/42.3.0

Copy the executable to the new created directory

mv linux_x64_64_sfx.exe /opt/psi/Tools/GAMS/42.3.0/

Change permissions of the executable accordingly

chmod +x /opt/psi/Tools/GAMS/42.3.0/linux_x64_64_sfx.exe

Execute it to install the software

cd /opt/psi/Tools/GAMS/42.3.0
./linux_x64_64_sfx.exe

The created subdirectory is created with the pattern: gams${v_MAJOR}.${V_MINOR}_linux_x64_64_sfx. Examples:

/opt/psi/Tools/GAMS/31.1.1/gams31.1_linux_x64_64_sfx
/opt/psi/Tools/GAMS/42.3.0/gams42.3_linux_x64_64_sfx

Add the proper version in the variants file and run the build file

cd ~/buildblocks/Tools/GAMS
echo "GAMS/42.3.0   unstable" >> files/variants.rhel7
./build 42.3.0