The High Performance Systems Group (HPSG) was founded in 1984. Currently led by Professor Stephen Jarvis, it includes 17 members: 4 permanent academic staff, 3 post-doctoral researchers, and 10 postgraduate research assistants. The group focuses on the analysis and performance evaluation of software/systems combinations, including: 

• Supporting all aspects of High Performance Computing: initial code development, deployment and optimization; machine-specific tuning; performance modelling and bottleneck analysis. Advanced methods of performance evaluation are developed to support procurement and code optimization.
• The development of predictive techniques capable of determining the detailed execution characteristics and resource use of industry-strength applications running on large high-performance computers prior to execution. 
• Methods for improving and managing the performance of e-business systems. 
• Examining how peer-to-peer networks can be adapted to maintain optimal performance as the tasks performed by the peers change. This includes identifying promising peer-to-peer overlay topologies to which a system can adapt in order to improve the performance of pivotal information aggregation tasks, and designing and testing algorithms that demonstrate how such adaptation can be achieved. 
• The design and development of software for high-performance medical image computing and computer-aided intervention, and for the simulation of matter such as solids, liquids, membranes or nanoparticles with atomic and molecular resolution. 

Recently the group has worked on system optimization and resource scheduling in cluster, multi-cluster, Grid and other HPC and distributed computing environments. Much of the work has focused on computationally intense applications of interest to the science and engineering community. In a joint undertaking with IBM's T.J. Watson Research Laboratories in New York we have also applied these techniques to e-business systems. The group's research has been funded by the EPSRC, the DTI, the MOD, the EU Research Programme, the Royal Society, DARPA, the US Navy, IBM and NASA. Current partners include Cray, CSIRO, INRIA, MOD, ORNL, Rolls Royce, Tessella, Tsinghua University Beijing, Sandia National Laboratory, Lawrence Livermore National Laboratory, Sun Microsystems, University of Wisconsin-Madison and the Vrije Universiteit Amsterdam. The group also includes members of the IEEE, IEE, ICST, ACM, BCS and the UK Computer Measurement Group (CMG).