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      Temperature Regulation in Multicore Processors Using Adjustable-Gain Integral Controllers

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          Abstract

          This paper considers the problem of temperature regulation in multicore processors by dynamic voltage-frequency scaling. We propose a feedback law that is based on an integral controller with adjustable gain, designed for fast tracking convergence in the face of model uncertainties, time-varying plants, and tight computing-timing constraints. Moreover, unlike prior works we consider a nonlinear, time-varying plant model that trades off precision for simple and efficient on-line computations. Cycle-level, full system simulator implementation and evaluation illustrates fast and accurate tracking of given temperature reference values, and compares favorably with fixed-gain controllers.

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          Author and article information

          Journal
          2015-07-22
          10.1109/CCA.2015.7320717
          1507.06357

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          8 pages, 6 figures, IEEE Conference on Control Applications 2015, Accepted Version
          math.OC

          Numerical methods

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