A genetic-based fault-tolerant routing strategy for multiprocessor networks

AI-based search techniques have been adapted as viable, topology-independen t fault-tolerant routing strategies on multiprocessor networks [P.K.K. Loh, Artificial intelligence search techniques as fault-tolerant routing strate gies, Parallel Computing 22 (8) (1996) 1127-1147]. These fault-tolerant rou ting strategies are viable with the exception that the routes obtained were non-minimal. This meant that a large number of redundant node traversals w ere made in reaching the destination, increasing the likelihood of encounte ring further faulty network components. Here, we investigate the adaptation of a genetic-heuristic algorithm combination as a fault-tolerant routing s trategy. Our results show that this hybrid fault-tolerant routing strategy produces minimal or near-minimal routes. Under certain fault conditions, th is new strategy outperforms the heuristic AI-based ones with a significant reduction in the number of redundant traversals. (C) 2001 Elsevier Science B.V. All rights reserved.