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Title:Data relocation and prefetching for programs with large data sets
Author(s):Yamada, Yoji
Doctoral Committee Chair(s):Hwu, Wen-Mei W.
Department / Program:Engineering, Electronics and Electrical
Computer Science
Discipline:Engineering, Electronics and Electrical
Computer Science
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Computer Science
Abstract:Numerical applications frequently contain nested loop structures that process large arrays of data. The execution of these loop structures often produces memory preference patterns that poorly utilize data caches. Limited associativity and cache capacity result in cache conflict misses. Also, non-unit stride access patterns can cause low utilization of cache lines. Data copying has been proposed and investigated in order to reduce the cache conflict misses (1) (2), but this technique has a high execution overhead since it does the copy operations entirely in software.
I propose a combined hardware and software technique called data relocation and prefetching which eliminates much of the overhead of data copying through the use of special hardware. Furthermore, by relocating the data while performing software prefetching, the overhead of copying the data can be reduced further. Experimental results for data relocation and prefetching show a large improvement in cache performance.
Issue Date:1995
Rights Information:Copyright 1995 Yamada, Yoji
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI9522189
OCLC Identifier:(UMI)AAI9522189

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