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MiS Preprint
5/2014
$\mathcal{H}$-LU Factorization on Many-Core Systems
Ronald Kriemann
Abstract
A version of the $\mathcal{H}$-LU factorization is introduced, based on the individual computational tasks occurring during the block-wise $\mathcal{H}$-LU factorization. The dependencies between these tasks form a directed acylic graph, which is used for efficient scheduling on parallel systems. The algorithm is especially suited for many-core processors and shows a much improved parallel scaling behavior compared to previous $\mathcal{H}$-LU factorization algorithms.
