A. James Clark School of Engineering

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Author: search.filters.author.Potkonjak, PotkonjakSubject: search.filters.subject.energy consumption

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    Energy Minimization with Guaranteed Quality of Service
    (IEEE, 2000-07) Qu, Gang; Potkonjak, Potkonjak; Copyright © 2000 IEEE. Reprinted from ACM/IEEE International Symposium on Low Power Electronics and Dsign. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Maryland's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
    Quality of service (QoS) is one of the key features for new Internet-based multimedia and other applications. Mean- while, energy remains as a big concern for systems that per- form such applications. We address the issue of combining system design concerns and QoS requirements to design systems that can deliver QoS guarantees. In this paper, we discuss how to satisfy QoS requirements and minimize the system's energy consumption. Specifically, we consider the following problem: Given a set of applications each specifying its required amount of computation and service time, how we allocate CPU time and determine the voltage profile on a variable voltage system, such that all the applications' requirements are satisfied and the system's total energy con- sumption is minimized. We optimally solve several basic cases and propose a dynamic programming procedure for the general case. Simulation shows that the new approach saves 38.75% energy over the system shut-down technique.