New Challenges in Scheduling Theory

October 21 - 27, 2012 --- Centre CNRS "La Villa Clythia", Frejus, France

Performance-Energy Trade-off in Distributed High Performance Computing Systems

SpeakerAriel Oleksiak

Recent trend to use many-core and heterogeneous architectures as well rising energy demands of computing systems caused that the energy efficiency became a key issue. It is important from levels of single servers, which are getting more and more dense with increasing numbers of computing cores, up to big data centers which are limited by power supply available and their cooling efficiency. For this reason, there is a need to design new resource management methods that take into account energy efficiency in addition to typical performance criteria. We present the analysis of performance and energy trade-off for diverse classes of applications and hardware used in a real high performance computing center. We apply metrics to evaluate this trade-off taking also into account variability of load, availability of servers and thermal effects. We show how results of this analysis can be applied in resource management policies to improve energy efficiency and we demonstrate it by experiments conducted using the GSSIM simulation tool.