Eliminating on-chip traffic waste: Are we there yet?

Robert Smolinski, Rakesh Komuravelli, Hyojin Sung, Sarita V. Adve

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

Abstract

While many techniques have been shown to be successful at reducing the amount of on-chip network traffic, no studies have shown how close a combined approach would come to eliminating all unnecessary data traffic, nor have any studies provided insight into where the remaining challenges are. This paper systematically analyzes the traffic inefficiencies of a directory-based MESI protocol and a more efficient hardware-software co-designed protocol, DeNovo. We categorize data waste into various categories and explore several simple optimizations extending DeNovo with the aim of eliminating all of the on-chip network traffic waste. With all the proposed optimizations, we are able to completely eliminate (100%) onchip network traffic waste at L2 for some of the applications (93.5% on average) compared to the previous DeNovo protocol.

Original languageEnglish (US)
Title of host publicationISPASS 2015 - IEEE International Symposium on Performance Analysis of Systems and Software
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages163-164
Number of pages2
ISBN (Electronic)9781479919567
DOIs
StatePublished - Apr 27 2015
Event2015 15th IEEE International Symposium on Performance Analysis of Systems and Software, ISPASS 2015 - Philidelphia, United States
Duration: Mar 29 2015Mar 31 2015

Publication series

NameISPASS 2015 - IEEE International Symposium on Performance Analysis of Systems and Software

Other

Other2015 15th IEEE International Symposium on Performance Analysis of Systems and Software, ISPASS 2015
CountryUnited States
CityPhilidelphia
Period3/29/153/31/15

ASJC Scopus subject areas

  • Software

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