Raven is the new (late 2012) ARCCA cluster. It has 2000 Sandybridge cores with fast interconnect, and an additional 800 cores of Westmere which are set up for serial jobs.

If you have an account, you can log on with:

ssh ravenlogin.arcca.cf.ac.uk

There is a lot of software available. You can see what there is by typing

<code bash> module avail<\code>

You load a module by typing, e.g.

<code bash> module load python/2.6.7<\code>

and can see what you currently have loaded with

<code bash> module list<\code>