Performance Enhancements and Parallel Algorithms for Two Multilevel Preconditioners

Abstract

Several new variants of the hierarchical basis (HB) preconditioner and Bramble, Pasciak, and Xu’s multilevel preconditioner (BPX) are presented and studied, and new parallel algorithms are introduced for both methodologies. It is shown that the performance of both preconditioners is improved by not solving the linear system associated with the initial… (More)
DOI: 10.1137/0914055

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