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Dynamic Voltage Scheduling with Buffers in Low-Power Multimedia Applications

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Authors
Im, Chaeseok; Kim, Huiseok; Ha, Soonhoi
Issue Date
2004-11
Publisher
Association for Computing Machinery (ACM)
Citation
ACM Transactions on Embedded Computing Systems (TECS) Vol. 3, No. 4, pp 686-705, 2004
Keywords
Buffer requirement estimationdynamic voltage schedulinglow-power systemsmultimedia applications
Abstract
Power-efficient design of multimedia applications becomes more important as they are used increasingly in
many embedded systems. We propose a simple dynamic voltage scheduling technique which suits multimedia
applications well and, in case of soft real-time applications, allows all idle intervals of the processor to be fully
exploited by using buffers. Our main theme is to determine the minimum buffer size to maximize energy saving
in three cases: (i) single-task, (ii) multiple-subtask and (iii) multi-task. We also present a technique of adjusting
task deadlines for further reducing energy consumption in the multiple-subtask and multi-task cases. Unlike
other DVS techniques using buffers, we guarantee to meet the real-time latency constraint. Experimental results
show that the proposed technique does indeed achieve significant power reduction in real-world multimedia
applications.
ISSN
1539-9087
Language
English
URI
http://hdl.handle.net/10371/7969
DOI
https://doi.org/10.1145/1027794.1027796
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Computer Science and Engineering (컴퓨터공학부)Journal Papers (저널논문_컴퓨터공학부)
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