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ABSTRACT
This paper presents methods for efficient power minimization at circuit and micro-architectural levels. The potential energy savings are strongly related to the energy profile of a circuit. These savings are obtained by using gate sizing, supply voltage, and threshold voltage optimization, to minimize energy consumption subject to a delay constraint. The true power minimization is achieved when the energy reduction potentials of all tuning variables are balanced. We derive the sensitivity of energy to delay for each of the tuning variables connecting its energy saving potential to the physical properties of the circuit. This helps to develop understanding of optimization performance and identify the most efficient techniques for energy reduction. The optimizations are applied to some examples that span typical circuit topologies including inverter chains, SRAM decoders, and adders. At a delay of 20% larger than the minimum, energy savings of 40% to 70% are possible, indicating that achieving peak performance is expensive in terms of energy. Energy savings of about 50% can be achieved without delay penalty with the balancing of sizes, supplies, and thresholds.
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Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.
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CITED BY 17
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David Nguyen , Abhijit Davare , Michael Orshansky , David Chinnery , Brandon Thompson , Kurt Keutzer, Minimization of dynamic and static power through joint assignment of threshold voltages and sizing optimization, Proceedings of the 2003 international symposium on Low power electronics and design, August 25-27, 2003, Seoul, Korea
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Fei Li , Yan Lin , Lei He , Jason Cong, Low-power FPGA using pre-defined dual-Vdd/dual-Vt fabrics, Proceedings of the 2004 ACM/SIGDA 12th international symposium on Field programmable gate arrays, February 22-24, 2004, Monterey, California, USA
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W. Hung , Y. Xie , N. Vijaykrishnan , M. Kandemir , M. J. Irwin , Y. Tsai, Total power optimization through simultaneously multiple-vDD multiple-vTH assignment and device sizing with stack forcing, Proceedings of the 2004 international symposium on Low power electronics and design, August 09-11, 2004, Newport Beach, California, USA
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Venkata Syam P. Rapaka , Emil Talpes , Diana Marculescu, Mixed-clock issue queue design for energy aware, high-performance cores, Proceedings of the 2004 conference on Asia South Pacific design automation: electronic design and solution fair, p.380-383, January 27-30, 2004, Yokohama, Japan
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