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DAP implementation of the WZ algorithm

✍ Scribed by Richard L. Hellier

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
215 KB
Volume
26
Category
Article
ISSN
0010-4655

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✦ Synopsis

This paper is concerned with an evaluation of the WZ algorithm both as to its potential parallelism and to its suitablity for implementation on the ICL DAP. Robustness of the method is ensured by a novel pivoting scheme. Application areas considered are solution of systems of linear equations and finding eigenvalues.

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Implementation of QR factorization on the DAP using householder transformations
✍ G.S.J. Bowgen; J.J. Modi πŸ“‚ Article πŸ“… 1985 πŸ› Elsevier Science 🌐 English βš– 366 KB

The greatest emphasis has hitherto been on parallel application of Givens rotations. In this paper we show that on the Distributed Array Processor (DAP), Householder reflections turn out to be faster than Givens rotations, to perform QR factorization of an m X n matrix, especially for m >> n. Detail