ATAT - Alloy Theoretic Automated Toolkit is a generic name that refers to a collection of alloy theory tools developed by Axel van de Walle, in collaboration with various research groups.
Load the ATAT module corresponding to the version you want to use, e.g
module load ATAT/3.34-nsc1-gcc-2018a-eb
This will add the ATAT applications to your search path.
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