Please note: The FAQ pages at the HPCVL website are continuously being revised. Some pages might pertain to an older configuration of the system. Please let us know if you encounter problems or inaccuracies, and we will correct the entries.
The program resides in /opt/gaussian/g09 and is called (you guessed it) g09. We also maintain copies of previous releases of Gaussian, namely '98 and '03. These are located in /opt/gaussian/g98 and /opt/gaussian/g03, repsectively. Their usage is completely equivalent to the one of Gaussian'09 described in this FAQ.
In the program directory, there is a series of test jobs, which are very useful to get an idea of how to perform specific types of calculations. The source code of Gaussian is not accessible to the general public, since Gaussian is a licensed product. However, Gaussian grants the permission to alter the code under certain conditions. If you want to do so, contact HPCVL to learn more. You are not allowed to copy the executable or any part of the distribution onto your local machine, unless you hold a proper license yourself.