NDLI: CATCH: A Mechanism for Dynamically Detecting Cache-Content-Duplication and its Application to Instruction Caches

Content Provider	IEEE Xplore Digital Library
Author	Kleanthous, M. Sazeides, Y.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci., Univ. of Cyprus, Nicosia (Kleanthous, M.; Sazeides, Y.)
Abstract	Cache-Content-Duplication (CCD) occurs when there is a miss for a block in a cache and the entire content of the missed block is already in the cache in a block with a different tag. Caches aware of content-duplication can have lower miss rates by allowing only blocks with unique content to enter a cache. This work examines the potential of CCD for instruction caches. We show that CCD is a frequent phenomenon and that an idealized duplication- detection mechanism for instruction caches has the potential to increase performance of an out-of-order processor, with a 2-way eight instruction per block 16 KB instruction cache, often by more than 5% and up to 20%. This work also proposes CATCH, a hardware based mechanism for dynamically detecting CCD. Experimental results for an out-of-order processor show that a CATCH with a 2.32 KB cost usually captures 60% or more of the CCD's idealized potential.
Starting Page	1426
Ending Page	1431
File Size	360262
Page Count	6
File Format	PDF
ISBN	9783981080131
DOI	10.1109/DATE.2008.4484874
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-10
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	European Design Automation Association (EDAA)
Subject Keyword	Charge coupled devices Hardware Compaction Out of order Costs User-generated content Program processors Application software Computer science Delay
Content Type	Text

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