New partitioning schemes for parallel modified Gram-Schmidtorthogonalization
Oliveria, S.; Soma, T.
Parallel Architectures, Algorithms, and Networks, 1997. (I-SPAN apos;97) Proceedings., Third International Symposium on
Volume , Issue , 18-20 Dec 1997 Page(s):233 - 239
Digital Object Identifier   10.1109/ISPAN.1997.645102
Summary:In this paper we are concerned with parallel implementation of row-oriented Gram-Schmidt orthogonalization. For the data partitioning four types of columnwise partitioning schemes were considered: column (1-col), block, cyclic and block-cyclic (b-c) partitioning. Analytical models for parallel execution time required by these implementations are derived and compared with numerical results. The best partitioning scheme is shown theoretically and by numerical results

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