Rackham's design

Rackham is an (general-purpose) high-performance computing (HPC) cluster.

What is an HPC cluster?

What an HPC cluster is, is described here.

Or: Rackham is a group of computers that can effectively run many calculations, as requested by multiple people, at the same time. Rackham runs the Linux operating system and all users need some basic Linux knowledge to use Rackham.

Using Linux

Using Linux (and especially the so-called command-line/terminal) is essential to use Rackham. Learning the essential Linux commands is described here.