11.2 Notes for OSCAR and Rocks Users

As previously noted, both OpenPBS and Maui are installed as part of the OSCAR setup. The installation directory for OpenPBS is /opt/pbs. You'll find the various commands in subdirectories under this directory. The working directory for OpenPBS is /var/spool/pbs, where you'll find the configuration and log files. The default queue, as you may have noticed from previous examples, is workq. Under OSCAR, Maui is installed in the directory /opt/maui. By default, the OpenPBS FIFO scheduler is disabled.

OpenPBS and Maui are available for Rocks as a separate roll. If you need OpenPBS, be sure you include the roll when you build your cluster as it is not currently possible to add the roll once the cluster has been installed. Once installed, the system is ready to use. The default queue is default.

Rocks also provides a web-based interface for viewing the job queue that is available from the frontend's home page. Using the web interface, you can view both the job queue and the physical job assignments. PBS configuration files are located in /opt/torque. Manpages are in /opt/torque/man. Maui is installed under /opt/maui.