Iterative algorithms for solution of large sparse systems of linear equations on hypercubes

Date
1988
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Source Title
IEEE Transactions on Computers
Print ISSN
0018-9340 (print)
1557-9956 (online)
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Publisher
IEEE
Volume
37
Issue
12
Pages
1554 - 1568
Language
English
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Abstract

Finite-element discretization produces linear equations in the form Ax=b, where A is large, sparse, and banded with proper ordering of the variables x. The solution of such equations on distributed-memory message-passing multiprocessors implementing the hypercube topology is addressed. Iterative algorithms based on the conjugate gradient method are developed for hypercubes designed for coarse-grained parallelism. The communication requirements of different schemes for mapping finite-element meshes onto the processors of a hypercube are analyzed with respect to the effect of communication parameters of the architecture. Experimental results for a 16-node Intel 80386-based iPSC/2 hypercube are presented and discussed.

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