Cooperative shared resource access control for low-power chip multiprocessors

Noriko Takagi, Hiroshi Sasaki, Masaaki Kondo, Hiroshi Nakamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

In a single-chip multiprocessor (CMP), the last-level cache and its lower memory hierarchy components are typically shared by multiple processors. Conflicts in these resources lead to poor overall performance of the CMP and/or unpredictable performance of the individual cores. If applications on different cores have different performance constraints, even though these constraints can be satisfied by dynamic voltage and frequency scaling (DVFS) control of each core, conflicts in shared resources will lead to increased power consumption. Therefore, in the present paper, we derive a condition whereby, under resource conflicts, the total power consumption is minimized by a newly developed power consumption model and propose a method by which to minimize the power consumption of CMPs by cooperative access control of multiple shared resources and DVFS control. Experimental results reveal that the proposed technique can reduce power consumption by 15% on average in a dual-core CMP and by 13% in a quad-core CMP, as compared to the case in which only DVFS control is applied.

Original languageEnglish
Title of host publicationISLPED'09 - Proceedings of the 2009 ACM/IEEE International Symposium on Low Power Electronics and Design
Pages177-182
Number of pages6
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 ACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED'09 - San Fancisco, CA, United States
Duration: 2009 Aug 192009 Aug 21

Publication series

NameProceedings of the International Symposium on Low Power Electronics and Design
ISSN (Print)1533-4678

Conference

Conference2009 ACM/IEEE International Symposium on Low Power Electronics and Design, ISLPED'09
Country/TerritoryUnited States
CitySan Fancisco, CA
Period09/8/1909/8/21

Keywords

  • Cache partitioning
  • Chip multiprocessors
  • DVFS
  • Low power
  • Resource conflict

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint

Dive into the research topics of 'Cooperative shared resource access control for low-power chip multiprocessors'. Together they form a unique fingerprint.

Cite this