Quasi-Static Voltage Scaling for Energy Minimization with Time Constraints
2011 (English)In: IEEE Transactions on Very Large Scale Integration (vlsi) Systems, ISSN 1063-8210, ISSN 1063-8210, Vol. 19, no 1, 10-23 p.Article in journal (Refereed) Published
Supply voltage scaling and adaptive body-biasing are important techniques that help to reduce the energy dissipation of embedded systems. This is achieved by dynamically adjusting the voltage and performance settings according to the application needs. In order to take full advantage of slack that arises from variations in the execution time, it is important to recalculate the voltage (performance) settings during runtime, i.e., online. However, optimal voltage scaling algorithms are computationally expensive, and thus, if used online, significantly hamper the possible energy savings. To overcome the online complexity, we propose a quasi-static voltage scaling scheme, with a constant online time complexity O(1). This allows to increase the exploitable slack as well as to avoid the energy dissipated due to online recalculation of the voltage settings.
Place, publisher, year, edition, pages
IEEE , 2011. Vol. 19, no 1, 10-23 p.
Clocks, Complexity theory, Energy minimization, Optimization, Program processors, Runtime, Table lookup, Time frequency analysis, online voltage scaling, quasi-static voltage scaling (QSVS), real-time systems, voltage scaling
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-59628DOI: 10.1109/TVLSI.2009.2030199ISI: 000285844200002OAI: oai:DiVA.org:liu-59628DiVA: diva2:352774
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Alexandru Andrei, Petru Ion Eles, Olivera Jovanovic, Marcus Schmitz, Jens Ogniewski and Zebo Peng, Quasi-Static Voltage Scaling for Energy Minimization with Time Constraints, 2010, IEEE Transactions on Very Large Scale Integration (vlsi) Systems, (19), 1, 10-23.