Phase-aware adaptive hardware selection for power-efficient scientific computations

  • Authors:
  • Konrad Malkowski;Padma Raghavan;Mahmut Kandemir;Mary Jane Irwin

  • Affiliations:
  • The Pennsylvania State University;The Pennsylvania State University;The Pennsylvania State University;The Pennsylvania State University

  • Venue:
  • ISLPED '07 Proceedings of the 2007 international symposium on Low power electronics and design
  • Year:
  • 2007

Quantified Score

Hi-index 0.00

Visualization

Abstract

Increased power consumption and heat dissipation have become the major limiters of available computational resources at many high performance computing (HPC) centers. Applications that run at suchcenters typically operate in single user mode, run for longperiods of time, and have long lasting application phases. Their users are interested in obtaining the maximum performance. We propose a phase aware adaptive hardware selection technique,featuring data prefetchers and dynamic voltage and frequency scaling. Ourtechnique takes advantage of memory bound phases in scientific codes, resulting in significant power (39%) and energy (37%) reductions while maintainingor exceeding the performance of an unoptimized system.