NDLI: Reducing Cache Pollution Through Detection and Elimination of Non-Temporal Memory Accesses

Content Provider	IEEE Xplore Digital Library
Author	Sandberg, A. Eklöv, D. Hagersten, E.
Copyright Year	2010
Abstract	Contention for shared cache resources has been recognized as a major bottleneck for multicores--especially for mixed workloads of independent applications. While most modern processors implement instructions to manage caches, these instructions are largely unused due to a lack of understanding of how to best leverage them. This paper introduces a classification of applications into four cache usage categories. We discuss how applications from different categories affect each other's performance indirectly through cache sharing and devise a scheme to optimize such sharing. We also propose a low-overhead method to automatically find the best per-instruction cache management policy. We demonstrate how the indirect cache-sharing effects of mixed workloads can be tamed by automatically altering some instructions to better manage cache resources. Practical experiments demonstrate that our software-only method can improve application performance up to 35% on x86 multicore hardware.
Starting Page	1
Ending Page	11
File Size	243364
Page Count	11
File Format	PDF
ISBN	9781424475575
e-ISBN	9781424475599
e-ISBN	9781424475582
DOI	10.1109/SC.2010.44
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hardware Multicore processing Prefetching Data structures Bandwidth
Content Type	Text
Resource Type	Article

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