10.3 Notes for OSCAR and Rocks Users

C3 is a core OSCAR package that is installed in /opt/c3-4 and can be used as shown in this chapter. Both Ganglia and Clumon (which uses Performance Co-Pilot) may be available as additional packages for OSCAR. As add-ons, these may not always be available immediately when new versions of OSCAR are released. For example, there was a delay with both when OSCAR 3.0 was released. When installing Ganglia using the package add option with OSCAR, you may want to tweak the configuration files, etc.

Although not as versatile as the C3 command set, Rocks supplies the command cluster-fork for executing commands across a cluster.

For OSCAR, the web-accessible reports for Clumon and Ganglia are installed in /var/www/html/clumon and /var/www/html/ganglia, respectively. Thus, to access the Ganglia web report on amy.wofford.int, the URL is http://amy.wofford.int/ganglia/. The page format used by OSCAR is a little different, but you would use Ganglia in much the same way.

Ganglia is fully integrated into Rocks and is available as a link from the administrative home for the frontend.