Computer Architecture Techniques for Power-Efficiency

Computer Architecture Techniques for Power-Efficiency

Stefanos Kaxiras, Margaret Martonosi
ISBN: 9781598292084 | PDF ISBN: 9781598292091
Copyright © 2008 | 207 Pages | Publication Date: 01/01/2008

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In the last few years, power dissipation has become an important design constraint, on par with performance, in the design of new computer systems. Whereas in the past, the primary job of the computer architect was to translate improvements in operating frequency and transistor count into performance, now power efficiency must be taken into account at every step of the design process.

While for some time, architects have been successful in delivering 40% to 50% annual improvement in processor performance, costs that were previously brushed aside eventually caught up. The most critical of these costs is the inexorable increase in power dissipation and power density in processors. Power dissipation issues have catalyzed new topic areas in computer architecture, resulting in a substantial body of work on more power-efficient architectures. Power dissipation coupled with diminishing performance gains, was also the main cause for the switch from single-core to multi-core architectures and a slowdown in frequency increase.

This book aims to document some of the most important architectural techniques that were invented, proposed, and applied to reduce both dynamic power and static power dissipation in processors and memory hierarchies. A significant number of techniques have been proposed for a wide range of situations and this book synthesizes those techniques by focusing on their common characteristics.

Table of Contents

Introduction
Modeling, Simulation, and Measurement
Using Voltage and Frequency Adjustments to Manage Dynamic Power
Optimizing Capacitance and Switching Activity to Reduce Dynamic Power
Managing Static (Leakage) Power
Conclusions

About the Author(s)

Stefanos Kaxiras, University of Patras, Greece

Margaret Martonosi, Princeton University

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