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Lookup NU author(s): Dr Kenneth Wright
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This study is concerned with parallel algorithms for the orthogonal reduction of a general matrix to upper Hessenberg form. A variety of algorithms are investigated, which involve varying amounts of overlap between different parts of the calculation. Empirical comparison was carried out using C++ and the THREADS package on a shared memory Encore Multimax multiprocessor. In this testing the final version which involves most overlap was found to be the most efficient algorithm, and its efficiency is very high. The algorithms illustrate the advantages of parallel algorithms using dynamic allocation of tasks to THREADs on this shared memory machine. © 2004 Elsevier Inc. All rights reserved.
Author(s): Kaya D, Wright K
Publication type: Article
Publication status: Published
Journal: Applied Mathematics and Computation
ISSN (print): 0096-3003
ISSN (electronic): 1873-5649
Publisher: Elsevier Inc.
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