The theory department maintains it's own computer systems. The number crunching is done on the SPs, while the old workstations are for developing and data evaluation. There's a CRAY T3E with 20 processors, too.
Personal work is done on PCs and X-terminals.
The workstation cluster consists of 12 IBM workstations, mostly of types 370 and 390. About half of them is connected via FDDI, the rest via a dedicated ethernet network. The cluster currently runs AIX 4.1.5 . All nodes are connected through a high performance switch network as well as nornal ethernet. All SP2 nodes are running under AIX 4.1.5.