Probability-based Fault-tolerant Routing in Hypercubes

Autor: Jehad Al-Sadi, Khaled Day, Mohamed Ould-Khaoua
Rok vydání: 2001
Předmět:
Zdroj: The Computer Journal. 44:368-373
ISSN: 1460-2067
0010-4620
DOI: 10.1093/comjnl/44.5.368
Popis: This paper describes a new fault-tolerant routing algorithm for the hypercube, using the concept of probability vectors. To compute these vectors, a node first determines its faulty set, which represents the set of all its neighbouring nodes that are faulty or unreachable due to faulty nodes or links. Each node then calculates a probability vector, where the kth element represents the probability that a destination node at distance k cannot be reached through a minimal path due to a faulty node or link. The probability vectors are used by all the nodes to achieve an efficient fault-tolerant routing in the network. A performance comparison with the recently-proposed safety-vectors algorithm, through extensive simulation, shows that the new algorithm exhibits superior performance in terms of routing distances and percentage of reachability. Received ; revised
Databáze: OpenAIRE