Architecture and Automation Techniques for Resilient Computer Systems

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Mitigating computer system failure has been a challenge since the dawn of modern computing, but a number of factors are now converging such that resilience (a system's capacity to operate in the presence of failure due to manufacturing defect or faults in the field) is now a first-class design constraint. Semiconductor scaling has made it possible to introduce computers into every aspect of our lives. Scaling, which makes the wires and transistors of integrated circuits increasingly miniature, unfortunately also makes them increasingly vulnerable to myriad sources of failure: small, low-power, high-performance devices tend to be defect-prone, susceptible to transient error, and vulnerable to performance degradation as well as early total breakdown. If resilience is not addressed, the resulting costs will limit the introduction of new products and jeopardize the steady growth on which the information technology economy depends.