NDLI: Effective instruction prefetching in chip multiprocessors for modern commercial applications

Content Provider	IEEE Xplore Digital Library
Author	Spracklen, L. Yuan Chou Abraham, S.G.
Copyright Year	2005
Description	Author affiliation: Scalable Syst. Group, Sun Microsyst. Inc., Sunnyvale, CA, USA (Spracklen, L.; Yuan Chou; Abraham, S.G.)
Abstract	In this paper, we study the instruction cache miss behavior of four modern commercial applications (a database workload, TPC-W, SPECjAppServer2002 and SPECweb99). These applications exhibit high instruction cache miss rates for both the L1 and L2 caches, and a sizable performance improvement can be achieved by eliminating these misses. We show that it is important, not only to address sequential misses, but also misses due to branches and function calls. As a result, we propose an efficient discontinuity prefetching scheme that can be effectively combined with traditional sequential prefetching to address all forms of instruction cache misses. Additionally, with the emergence of chip multiprocessors (CMPs), instruction prefetching schemes must take into account their effect on the shared L2 cache. Specifically aggressive instruction cache prefetching can result in an increase in the number of L2 cache data misses. As a solution, we propose a scheme that does not install prefetches into the L2 cache unless they are proven to be useful. Overall, we demonstrate that the combination of our proposed schemes is successful in reducing the instruction miss rate to only 10%-16% of the original miss rate and results in a 1.08X-1.37X performance improvement for the applications studied.
Sponsorship	IEEE Comput. Soc. Tech. Comm. on Comput. Archit
Starting Page	225
Ending Page	236
File Size	181347
Page Count	12
File Format	PDF
ISBN	0769522750
ISSN	15300897
DOI	10.1109/HPCA.2005.13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Prefetching Databases Bandwidth Pollution Sun Performance loss Pipelines Performance analysis Web server Hardware
Content Type	Text
Resource Type	Article

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