Memory-aware dynamic voltage scaling for multimedia applications

J. Choi, H. Cha

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

As the computing environments are continuously moving towards battery-operated mobile and handheld systems, the development of energy-saving mechanisms for such devices has recently become a technical challenge. Dynamic voltage scaling (DVS) has historically been considered an effective method to reduce the processor power consumption. Conventional DVS techniques typically consider only processor utilisation issues in a policy-making process. However, as memory-bound multimedia applications are becoming popular in handheld devices, the DVS policies should consider the so-called 'memory wall' problem to maximise energy gain. Recent DVS techniques suffer from the inefficiency of their policies caused by the memory-wall problem while executing multimedia applications, and no previous research on DVS considers the problem explicitly. The existence of the memory wall problem in a real system is revealed and a metric that can be used to detect the problem in advance is found. A memory-aware DVS (M-DVS) technique that takes the memory wall problem fully into consideration is proposed. The experimental results on a PDA show that M-DVS can reduce ∼8% of additional power consumption, compared with conventional DVS, without any QoS degradation for handling multimedia clips.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalIEE Proceedings: Computers and Digital Techniques
Volume153
Issue number2
DOIs
Publication statusPublished - 2006 Mar

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Hardware and Architecture
  • Computational Theory and Mathematics

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