DocumentCode :
2380186
Title :
Quantifying the energy efficiency of coordinated micro-architectural adaptation for multimedia workloads
Author :
Yardi, Shrirang ; Hsiao, Michael S.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA
fYear :
2008
fDate :
12-15 Oct. 2008
Firstpage :
583
Lastpage :
590
Abstract :
Adaptive micro-architectures aim to achieve greater energy efficiency by dynamically allocating computing resources to match the workload performance. The decisions of when to adapt (temporal dimension) and what to adapt (spatial dimension) are taken by a control algorithm based on an analysis of the power/performance tradeoffs in both dimensions. We perform a rigorous analysis to quantify the energy efficiency limits of fine-grained temporal and coordinated spatial adaptation of multiple architectural resources by casting the control algorithm as a constrained optimization problem. Our study indicates that coordinated adaptation can potentially improve energy efficiency by up to 60% as compared to static architectures and by up to 33% over algorithms that adapt resources in isolation. We also analyze synergistic application of coarse and fine grained adaptation and find modest improvements of up to 18% over optimized dynamic voltage/frequency scaling. Finally, we analyze several previous control algorithms to understand the underlying reasons for their inefficiency.
Keywords :
multimedia computing; resource allocation; constrained optimization problem; control algorithm; coordinated microarchitectural adaptation; energy efficiency; multimedia workloads; power-performance tradeoffs; Algorithm design and analysis; Casting; Dynamic voltage scaling; Energy efficiency; Frequency; Hardware; Microprocessors; Performance analysis; Power engineering computing; Resource management;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Design, 2008. ICCD 2008. IEEE International Conference on
Conference_Location :
Lake Tahoe, CA
ISSN :
1063-6404
Print_ISBN :
978-1-4244-2657-7
Electronic_ISBN :
1063-6404
Type :
conf
DOI :
10.1109/ICCD.2008.4751920
Filename :
4751920
Link To Document :
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