EPCC wins HPC Innovation Excellence Award
EPCC is delighted to be part of a team that has won an HPC Innovation Excellence Award. Presented at the International Supercomputing Conference (ISC14) in Leipzig, the awards recognise outstanding application of HPC Computing for Business and Scientific Achievements.
The award recognises work by David Dickinson from the University of York, Adrian Jackson and Joachim Hein at EPCC, and Colin Roach from Culham Centre for Fusion Energy (CCFE), on the plasma simulation code GS2, where the overall performance of the code has been greatly improved, reducing the runtime by a factor of 20 for large parallel simulations.
GS2 is an open source gyrokinetic simulation code that is extensively used in plasma physics research internationally to study the linear and non-linear dynamics of magnetically-confined plasma in laboratory and astrophysical situations.
Culham Centre for Fusion Energy, EPCC at the University of Edinburgh, York Plasma Institute at the University of York, and Lund University. Researchers from CCFE, EPCC and the Universities of York and Lund have made substantial recent optimizations for the well-known plasma turbulence code, GS2. This included a total rewrite of the routines that calculate the response matrices required by the code’s implicit algorithm, which has significantly accelerated GS2′s initialization, typically by a factor of more than 10. Taken together, these optimizations have vastly reduced wall time, as illustrated by the impressive gain in speed by a factor of 20 that was achieved for a benchmark calculation running on 8,192 cores. The optimized code achieves scaling efficiencies close to 50% at 4,096 cores and 30% at 8,192 cores for a typical calculation, compared to efficiencies of 4% and 2% respectively prior to these optimizations. Leads: David Dickinson, Adrian Jackson, Colin M Roach and Joachim Hein.