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- W2620512195 abstract "Hierarchical matrices can be used to construct efficient preconditioners for partial differential and integral equations by taking advantage of low-rank structures in triangular factorizations and inverses of the corresponding stiffness matrices. The setup phase of these preconditioners relies heavily on low-rank updates that are responsible for a large part of the algorithm’s total run-time, particularly for matrices resulting from three-dimensional problems. This article presents a new algorithm that significantly reduces the number of low-rank updates and can shorten the setup time by 50% or more." @default.
- W2620512195 created "2017-06-05" @default.
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- W2620512195 date "2019-06-14" @default.
- W2620512195 modified "2023-09-26" @default.
- W2620512195 title "Hierarchical matrix arithmetic with accumulated updates" @default.
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- W2620512195 doi "https://doi.org/10.1007/s00791-019-00311-3" @default.
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