Parallel/vector improvements of the frontal method

M. Lesoinne, C. Farhat, M. Geradin

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We present, discuss, and report on the performance of two combined parallel/vector frontal algorithms which have been incorporated in a production finite element code. Two parallelization strategies are described. The first approach is algebra driven and is recommended for the solution of problems with a large bandwidth on a coarse grain configuration. The second strategy is targeted for finer grain systems; it blends the first one with a substructuring technique that is based on a careful partitioning of the finite element mesh into a series of subdomains. Using only 4 IBM 3090/VF processors, the proposed algorithms are shown to deliver speed‐ups as high as 17 with respect to a serial non‐vectorized frontal solver.

Original languageEnglish
Pages (from-to)1267-1281
Number of pages15
JournalInternational Journal for Numerical Methods in Engineering
Volume32
Issue number6
DOIs
StatePublished - 25 Oct 1991
Externally publishedYes

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