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Yield and Performance Enhancement Through Redundancy in VLSl and WSI Multiprocessor Systems



New challenges have been brought to fault-tolerant computing and processor architecture research because of developments in IC technology. One emerging area is development of architectures, built by interconnecting a large number of processing elements on a single chip or wafer. Two important areas, related to such VLSl processor arrays, are the focus of this paper; they are fault-tolerance and yield improvement techniques. Fault tolerance in these VLSl processor arrays is of real practical significance; it provides for much-needed reliability improvement. Therefore, we first describe the underlying concepts of fault tolerance at work in these multiprocessor systems. These precepts are useful to then present certain techniques that will incorporate fault tolerance integrally into the design. In the second part of the paper we discuss models that evaluate how yield enhancement and reliability improvement may be achieved by certain fault-tolerant techniques. I

Year: 2013
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