2 Installation, Customization, and Execution

2.2 Installing Q-Chem

(June 30, 2021)

Users are referred to the detailed installation instructions available at http://q-chem.com/download.htm.

An encrypted license file must be obtained from your vendor before you will be able to use Q-Chem. This file should be named qchem.license.dat and placed in the directory $QCAUX/license. All users of the software must be able to read this file. This file is node-locked, i.e., it will only operate correctly on the machine for which it was generated. Further details about obtaining this file, can be found in the installation instructions.

Do not alter the license file unless directed by Q-Chem, Inc.