# GAMESS¶

The General Atomic and Molecular Electronic Structure System (GAMESS) is a general ab initio quantum chemistry package. The home page is here. The official documentation is here.

## Using GAMESS at NERSC¶

GAMESS is provided on Cori via the gamess module. Users should invoke GAMESS using the rungms script which is added to the user's $PATH after loading a gamess module. The syntax for the rungms script is: rungms <input file> 00 <number of processes>  The directory $GAMESS_DIR/hsw/tests/standard includes a large number of example inputs files that are included with the GAMESS installation.