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Control-Theoretic Techniques and Thermal-RC Modeling for Accurate and Localized Dynamic Thermal Management (2001)
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BibTeX
@MISC{Skadron01control-theoretictechniques,
author = {Kevin Skadron and Tarek Abdelzaher and Mircea R. Stan},
title = {Control-Theoretic Techniques and Thermal-RC Modeling for Accurate and Localized Dynamic Thermal Management},
year = {2001}
}
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Abstract
This paper proposes the use of formal feedback control theory as a way to implement adaptive techniques in the processor architecture. Dynamic thermal management (DTM) is used as a test vehicle, and variations of a PID controller (Proportional-Integral-Differential) are developed and tested for adaptive control of fetch "toggling." To accurately test the DTM mechanism being proposed, this paper also develops a thermal model based on lumped thermal resistances and thermal capacitances. This model is computationally efficient and tracks temperature at the granularity of individual functional blocks within the processor. Because localized heating occurs much faster than chip-wide heating, some parts of the processor are more likely to be "hot spots" than others.
Keyphrases
control-theoretic technique localized dynamic thermal management thermal-rc modeling test vehicle dtm mechanism thermal capacitance adaptive technique dynamic thermal management pid controller individual functional block chip-wide heating hot spot lumped thermal resistance processor architecture localized heating thermal model adaptive control formal feedback control theory
