A limitation study into access decoupling

G.P. Jones, N.P. Topham

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


This paper presents a study into the theoretical limits of a latency hiding technique called access decoupling. Access decoupling is effective at hiding memory latency for low ILP and conservative dependency analysis [9,12,13]. We assess if this result still applies for maximum ILP and perfect dependency analysis.

We find that access decoupling with a basic decoupled memory model fails to hide latency. However, when the memory system is optimised to capture temporal locality exposed by decoupling, sensitivity to memory latency is almost removed. The optimised memory is also found to be a powerful bandwidth filter.
Original languageEnglish
Title of host publicationEuro-Par'97 Parallel Processing
Subtitle of host publicationThird International Euro-Par Conference Passau, Germany, August 26–29, 1997 Proceedings
EditorsChristian Lengauer, Martin Griebl, Sergei Gorlatch
PublisherSpringer Berlin Heidelberg
Number of pages10
ISBN (Electronic)978-3-540-69549-3
ISBN (Print)978-3-540-63440-9
Publication statusPublished - 1997

Publication series

NameLecture Notes in Computer Science
PublisherSpringer Berlin Heidelberg
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


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