The Green Computing Book: Tackling Energy Efficiency at Large Scale explores seminal research in large-scale green computing. It begins with low-level, hardware-based approaches and then traverses up the software stack with increasingly higher-level, software-based approaches.
In the first chapter, the IBM Blue Gene team illustrates how to improve the energy efficiency of a supercomputer by an order of magnitude without any system performance loss in parallelizable applications. The next few chapters explain how to enhance the energy efficiency of a large-scale computing system via compiler-directed energy optimizations, an adaptive run-time system, and a general prediction performance framework. The book then explores the interactions between energy management and reliability and describes storage system organization that maximizes energy efficiency and reliability. It also addresses the need for coordinated power control across different layers and covers demand response policies in computing centers. The final chapter assesses the impact of servers on data center costs.

Preface ix

Contributors xvii

Chapter 1 Low-Power, Massively Parallel, Energy-Efficient Supercomputers 1

Chapter 2 Compiler-Driven Energy Efficiency 43

Chapter 3 An adaptive Run-Time System for Improving Energy Efficiency 87

Chapter 4 Energy-Efficient Multithreading through Run-Time Adaptation 115

Chapter 5 Exploring Trade-Offs between Ene rgy Savings and Reliability in Storage Systems 149

Chapter 6 Cross-Layer Power Management 183

Chapter 7 Energy-Efficient Virtualized Systems 231

Chapter 8 Demand Response for Computing Centers 267

Chapter 9 Implications of Recent Trends in Performance, Costs, and Energy Use for Servers 297

Index 321

Wu-chun Feng is a professor in the Department of Computer Science and Department of Electrical & Computer Engineering at Virginia Polytechnic Institute and State University, where he is the director of the Synergy Laboratory. He is also the principal investigator of mpiBlast and Supercomputing in Small Spaces, founder of MyVICE, and co-founder of the Green500 list. His research interests lie broadly at the synergistic intersection of computer architecture, systems software and middleware, and applications software.

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