NDLI: Cooperative cache partitioning for chip multiprocessors

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Cooperative cache partitioning for chip multiprocessors

Content Provider	ACM Digital Library
Author	Sohi, Gurindar S. Chang, Jichuan
Abstract	This paper presents Cooperative Cache Partitioning (CCP) to allocate cache resources among threads concurrently running on CMPs. Unlike cache partitioning schemes that use a single spatial partition repeatedly throughout a stable program phase, CCP resolves cache contention with multiple time-sharing partitions. Timesharing cache resources among partitions allows each thrashing thread to speed up dramatically in at least one partition by unfairly shrinking other threads' capacity allocations, while improving fairness by giving different partitions equal chance to execute. Quality-of-Service (QoS) is guaranteed over the long term by orchestrating the shrink and expansion of each thread's capacity across partitions to bound the average slowdown. Time-sharing based cache partitioning is further integrated with CMP cooperative caching [6] to exploit the benefits of LRU-based latency optimizations, which leads to a simplified partitioning algorithm and better performance for workloads that do not benefit from cache partitioning. We evaluate the effectiveness of CCP by simulating a 4-core CMP running all combinations of 7 representative SPEC2000 benchmarks. For workloads that can benefit from cache partitioning, CCP achieves up to 60%, and on average 12%, better performance than the exhaustive search of optimal static partitions. Overall, CCP provides the best results on almost all evaluation metrics for different cache sizes.
Starting Page	402
Ending Page	412
Page Count	11
File Format	PDF
ISBN	9781450328401
DOI	10.1145/2591635.2667188
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-06-10
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Qos Multiple time-sharing partitions Cmp Cooperative cache partitioning Fairness
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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