Soft error and energy consumption interactions: A data cache perspective

Lin Li, Vijay Degalahal, N. Vijaykrishnan, Mahmut Kandemir, Mary Jane Irwin

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

57 Scopus citations

Abstract

Energy-efficiency and reliability are two major design constraints influencing next generation system designs. In this work, we focus on the interaction between power consumption and reliability considering the on-chip data caches. First, we investigate the impact of two commonly used architectural-level leakage reduction approaches on the data reliability. Our results indicate that the leakage optimization techniques can have very different reliability behavior as compared to an original cache with no leakage optimizations. Next, we investigate on providing data reliability in an energy-efficient fashion in the presence of soft-errors. In contrast to current commercial caches that treat and protect all data using the same error detection/correction mechanism, we present an adaptive error coding scheme that treats dirty and clean data cache blocks differently. Furthermore, we present an early-write-back scheme that enhances the ability to use a less powerful error protection scheme for a longer time without sacrificing reliability. Experimental results show that proposed schemes, when used in conjunction, can reduce dynamic energy of error protection components in L1 data cache by 11% on average without impacting the performance or reliability.

Original languageEnglish (US)
Title of host publicationProceedings of the 2004 International Symposium on Lower Power Electronics and Design, ISLPED'04
Pages132-137
Number of pages6
StatePublished - 2004
EventProceedings of the 2004 International Symposium on Lower Power Electronics and Design, ISLPED'04 - Newport Beach, CA, United States
Duration: Aug 9 2004Aug 11 2004

Publication series

NameProceedings of the 2004 International Symposium on Lower Power Electronics and Design, ISLPED'04

Other

OtherProceedings of the 2004 International Symposium on Lower Power Electronics and Design, ISLPED'04
CountryUnited States
CityNewport Beach, CA
Period8/9/048/11/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Li, L., Degalahal, V., Vijaykrishnan, N., Kandemir, M., & Irwin, M. J. (2004). Soft error and energy consumption interactions: A data cache perspective. In Proceedings of the 2004 International Symposium on Lower Power Electronics and Design, ISLPED'04 (pp. 132-137). (Proceedings of the 2004 International Symposium on Lower Power Electronics and Design, ISLPED'04).