2006 | OriginalPaper | Buchkapitel
A Preliminary Out-of-Core Extension of a Parallel Multifrontal Solver
verfasst von : Emmanuel Agullo, Abdou Guermouche, Jean-Yves L’Excellent
Erschienen in: Euro-Par 2006 Parallel Processing
Verlag: Springer Berlin Heidelberg
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The memory usage of sparse direct solvers can be the bottleneck to solve large-scale problems. This paper describes a first implementation of an
out-of-core
extension to a parallel multifrontal solver (
MUMPS
). We show that larger problems can be solved on limited-memory machines with reasonable performance, and we illustrate the behaviour of our parallel
out-of-core
factorization. Then we use simulations to discuss how our algorithms can be modified to solve much larger problems.