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Title:Inductive noise characterization and mitigation techniques for modern computer systems
Author(s):Smith, Andrew Timothy
Advisor(s):Kumar, Rakesh
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Inductive Noise
Power Distribution Network
Voltage Noise
Abstract:As the processor market continues to diversify, and device form factor continues to change, the challenges of processor power delivery and voltage noise become increasingly difficult to address. This thesis characterizes voltage emergencies and evaluates voltage noise mitigation techniques across a range of processors and power distribution networks. Each processor class has unique design constraints that affect voltage noise to differing degrees. This work considers three processor and PDN combinations representative of the current processor market. We evaluate the voltage noise observed, and for each system we evaluate three predictive architectural techniques to mitigate voltage noise. We describe the challenges inherent to each of these techniques, and the potential improvements to the architectural techniques. We also present Predict-T, a modern simulation framework for evaluating power supply and processor interaction. The framework is useful for evaluating collaborative circuit level and architecture level noise mitigation techniques. Finally, an instruction dependency-based prediction mechanism is proposed and evaluated across the different processors.
Issue Date:2020-07-29
Rights Information:c 2020 Andrew Timothy Smith
Date Available in IDEALS:2021-03-05
Date Deposited:2020-12

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