CClab Cluster
Department of Chemistry,
The cclab cluster consists
of six machines, each with dual-core/dual processor Intel Woodcrest Xeon 5130
processors (that's effectively four processors per machine). These machines are
shared between the Stern Group and the Jones Group, and are also used for
teaching. The master node is cclab-m0. It has 16 GB RAM and two mirrored 500 GB
disks. The five compute nodes are cclab-w1 through w5. They have 4 GB RAM and
80 GB disks.
Job policy
Jones Group users have priority on w1, w2, and two processors of w5; Stern
group users have priority on w3, w4, and the other two processors of w5. Node
m0 is to be reserved for jobs that require a large amount of RAM, and jobs run
by users taking courses.
If users run a job on the master node or on a compute node for which they do
not have priority, they should start their job with 'nice +19 ...' (or use 'renice +19' if the job has already started). At most four
jobs should run on each machine, although it is OK to run a few more if
necessary as long as the extra jobs are niced.
Please note that it is OK to run a job on any node as long as there are
processors available. However, you should run with nice and be prepared to
terminate your job on a node for which you don't have priority.
Automatic backups do not exist at this time, so users are responsible for
backing up their own data.