Neuronic Information

Policies

DO NOT RUN ANY SIMULATIONS ON THE MASTER NODE UNLESS YOU HAVE PERMISSION!!

Thus, use the mpirun option -nolocal

Otherwise, nodes 12-15 are often used for SCIRUN and Matlab simulations. If you wish to run a job across the entire cluster, and it requires a consistent load, please send us email a day in advance, and we will schedule time for you.

Any improper or unlawful use of this machine will dealt with seriously.

If you are unsure about something, just send us email.

Hardware Info

16+1 Dell PowerEdge 2650s (one used for head node)

Network Layout

There are two networks on the cluster. Both are on separate gigabit switches. As such, each node has two names: compute00-15 and generic00-15.

The basic idea is that all filesystem traffic goes over the generic switch, thus leaving the compute traffic on its own dedicated switch.

Most of this should be invisible to the user. Since all file systems are mounted across the cluster, you should not have to do any file copying between nodes. The network has been setup so that all filesystem traffic will go over the generic network by default.

So, if you need to login to one of the nodes, just use its compute name (eg, rsh compute05).

Note also that once on the cluster, you can rsh to any node without a password. If you want to do X-traffic from a node, then just use ssh to make your life easy.

Drive Layout

Home directories are mounted from our SAN FS server and are located in
/home/users/$USER

Each node has a roughly 26gig disk which is viewable from all other nodes. The mount points are:
/disks/disk-compute00
/disks/disk-compute01
/disks/disk-compute02
/disks/disk-compute03
/disks/disk-compute04
/disks/disk-compute05
/disks/disk-compute06
/disks/disk-compute07
/disks/disk-compute08
/disks/disk-compute09
/disks/disk-compute10
/disks/disk-compute11
/disks/disk-compute12
/disks/disk-compute13
/disks/disk-compute14
/disks/disk-compute15

Use these as you would like. This is more like scratch space. If you see a drive you are using fill up, move you output to a different one (or it might be deleted).

IMPORTANT: /usr/local is mounted from the master node across all the cluster nodes. All our packages (including all CCA stuff) is to be found under /usr/local.