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Coarse-Grid Selection for Parallel Algebraic Multigrid

by: Andrew J. Cleary, Robert D. Falgout, Van E. Henson, Jim E. Jones
In Workshop on Parallel Algorithms for Irregularly Structured Problems (1998), pp. 104-115.

X Abstract

. The need to solve linear systems arising from problems posed on extremely large, unstructured grids has sparked great interest in parallelizing algebraic multigrid (AMG). To date, however, no parallel AMG algorithms exist. We introduce a parallel algorithm for the selection of coarse-grid points, a crucial component of AMG, based on modications of certain parallel independent set algorithms and the application of heuristics designed to insure the quality of the coarse grids. A...

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