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ABSTRACT
<p><it>Abstract—</it>Our goal is to reconcile the conflicting demands of performance and fault-tolerance in interprocessor communication. To this end, we propose a pipelined communication mechanism—pipelined circuit-switching (PCS)—which is a variant of the well known wormhole routing (WR) mechanism. PCS relaxes some of the routing constraints imposed by WR and as a result enables routing behavior that cannot otherwise be realized. This paper presents a new class of adaptive routing algorithms—misrouting backtracking with $<tmath>m</tmath>$ misroutes (MB-$<tmath>m</tmath>$). This class of routing algorithms is made possible by PCS. We provide an analysis of the performance and static fault-tolerant properties of MB-$<tmath>m</tmath>$. The results of an experimental evaluation of PCS and MB-3 are also presented. This methodology provides performance approaching that of WR, while realizing a level of resilience to static faults that is difficult to achieve with WR.</p>
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CITATION
Patrick T. Gaughan, Sudhakar Yalamanchili, "A Family of Fault-Tolerant Routing Protocols for Direct Multiprocessor Networks", IEEE Transactions on Parallel & Distributed Systems, vol. 6, no. , pp. 482-497, May 1995, doi:10.1109/71.382317