Power efficiency for variation-tolerant multicore processors

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

49 Scopus citations

Abstract

Challenges in multicore processor design include meeting demands for performance, power, and reliability. The progression towards deep submicron process technologies entails increasing challenges of process variability resulting in timing instabilities and leakage power variation. This work introduces an analytical approach for ensuring timing reliability while meeting the appropriate performance and power demands in spite of process variation. We validate our analytical model using Turandot to simulate an 8-core PowerPC™ processor. We first examine a simplified case of our model on a platform running independent multiprogrammed workloads consisting of all 26 of the SPEC 2000 benchmarks. Our simple model accurately predicts the cutoff point with a mean error less than 0.5 W. Next, we extend our analysis to parallel programming by incorporating Amdahl's Law in our equations. We use this relation to establish limit properties of power-performance for scaling parallel applications, and validate our findings using 8 applications from the SPLASH-2 benchmark suite.

Original languageEnglish (US)
Title of host publicationISLPED'06 - Proceedings of the 2006 International Symposium on Low Power Electronics and Design
Pages304-309
Number of pages6
DOIs
StatePublished - Dec 1 2006
EventISLPED'06 - 11th ACM/IEEE International Symposium on Low Power Electronics and Design - Tegernsee, Bavaria, Germany
Duration: Oct 4 2006Oct 6 2006

Publication series

NameProceedings of the International Symposium on Low Power Electronics and Design
Volume2006
ISSN (Print)1533-4678

Other

OtherISLPED'06 - 11th ACM/IEEE International Symposium on Low Power Electronics and Design
CountryGermany
CityTegernsee, Bavaria
Period10/4/0610/6/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Keywords

  • Multicore
  • Parallel applications
  • Power
  • Variation

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