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2012 21st International Conference on Parallel Architectures and Compilation Techniques (PACT) (2012)
Minneapolis, MN, USA
Sept. 19, 2012 to Sept. 23, 2012
ISBN: 978-1-5090-6609-4
pp: 465-466
Karthik T. Sundararajan , School of Informatics, University of Edinburgh, Scotland
Timothy M. Jones , Computer Laboratory, University of Cambridge, UK
Nigel P. Topham , School of Informatics, University of Edinburgh, Scotland
ABSTRACT
The demand for high performance computing systems requires processor vendors to increase the number of cores per chip multiprocessor (CMP). However, as their number grows, the core-to-way ratio in the last level cache (LLC) increases, presenting problems to existing cache partitioning techniques which require more ways than cores. Further, effective energy management of the LLC becomes increasingly important due to its size. In this paper we propose an LLC energy-saving scheme for high-performance, many-core processors. It partitions the data within the cache into shared and private regions. Applications only access the ways containing the type of data that they require, realising dynamic energy savings. Any ways that are not within the shared or private regions can be turned off to save static energy.
INDEX TERMS
Monitoring, Benchmark testing, Fluid dynamics, Informatics, Cache memory, Computers, High performance computing,Energy-efficient cache, Cache partitioning, LLC management
CITATION
Karthik T. Sundararajan, Timothy M. Jones, Nigel P. Topham, "Energy-efficient cache partitioning for future CMPs", 2012 21st International Conference on Parallel Architectures and Compilation Techniques (PACT), vol. 00, no. , pp. 465-466, 2012, doi:
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