Presentation 2001/3/2
A System-level Energy Minimization Approach Using Datapath Width Optimization
Yun Cao, Hiroto Yasuura,
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Abstract(in English) This paper presents a novel system-level approach that minimizes the energy consumption of embedded core-based systems through datapath width optimization. It is based on the idea of minimizing energy consumed by redundant bits, which are unused during execution of programs by means of optimizing the data path width of processors. To minimize the redundant bits of variables in an application program. the effective size of variables is determined after variable size analysis, and Valen-C language is used to preserve the precision of computation. Analysis results of variables show that there are average 39% redundant bits in MPEG-2 decoder C source program. In our experiments for several embedded applications. energy savings without performance penalty are reported range from about 10.0% to 48.3%.
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Keyword(in English) energy minimization design / datapath width optimization / soft-core processor / Valen-C
Paper # VLD2000-142,ICD2000-218
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Conference Date 2001/3/2(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A System-level Energy Minimization Approach Using Datapath Width Optimization
Sub Title (in English)
Keyword(1) energy minimization design
Keyword(2) datapath width optimization
Keyword(3) soft-core processor
Keyword(4) Valen-C
1st Author's Name Yun Cao
1st Author's Affiliation Department of Computer Science and Communication Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University()
2nd Author's Name Hiroto Yasuura
2nd Author's Affiliation Department of Computer Science and Communication Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University
Date 2001/3/2
Paper # VLD2000-142,ICD2000-218
Volume (vol) vol.100
Number (no) 648
Page pp.pp.-
#Pages 6
Date of Issue