CCC PC Cluster

PBS Description

The main PBS server is running on clortho. Access to clortho is restricted to cluster administrators. Each machine in the cluster runs an execution client (so called PBS mom). The job scheduler is a standard schedular that comes with PBS.

At the moment, jobs can be submitted from any PC in the cluster or from zuul. To decide which jobs get picked next the PBS scheduler sorts jobs by the requested amount of time first (i.e. shorter jobs will always have priority over a longer job, even if they belong to the same queue). Secondly, it sorts jobs according to users' CPU usage statistics and users' priorities (so called "fairshare" algorithm). Basically, the CPU resources of the cluster you use, the lower your priority is going to be.

Continue on to PBS Tutorial.