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On parallel implementation of the one-sided Jacobi algorithm for singular value decompositions

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2 Author(s)
Zhou, B.B. ; Comput. Sci. Lab., Australian Nat. Univ., Canberra, ACT, Australia ; Brent, R.P.

In this paper we give evidence to show that in one-sided Jacobi SVD computation the sorting of column norms in each sweep is very important. Two parallel Jacobi orderings are described. These orderings can generate n(n-1)/2 different index pairs and sort column norms at the same time. The one-sided Jacobi SVD algorithm using these parallel orderings converges in about the same number of sweeps as the sequential cyclic Jacobi algorithm. Some experimental results on a Fujitsu AP1000 are presented. The issue of equivalence of orderings is also discussed

Published in:

Parallel and Distributed Processing, 1995. Proceedings. Euromicro Workshop on

Date of Conference:

25-27 Jan 1995