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Fault-tolerant computing on trees

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1 Author(s)
Agrawal, A. ; Dept. of Comput. Sci., Brown Univ., Providence, RI, USA

The paper analyzes the fault-tolerance of complete binary tree networks. It shows how an N-mode tree subject to random failures can simulate a perfect, fault-free tree under different fault models. If edges fail with independent probability p<1 /3 it shows both a lower bound and an approximately tight upper bound on the time required to simulate a perfect tree on the faulty tree. If edges are assumed to be robust and the nodes have a failure probability of p<1/2, then the faulty tree can simulate the fault-free tree with O(loglogN) slowdown. The paper also shows a matching lower bound for using all non-faulty processors. These results are combined to analyse other fault models. All the results hold with high probability

Published in:

Parallel and Distributed Processing, 1990. Proceedings of the Second IEEE Symposium on

Date of Conference:

9-13 Dec 1990

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