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PARALLEL TWO-STAGE REDUCTION TO HESSENBERG-TRIANGULAR FORM
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DOI：10.1137/23M1547093.png)
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摘要
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We present a two-stage algorithm for the parallel reduction of a pencil to Hessenb erg- triangular form. Traditionally, two-stage Hessenberg-triangular reduction algorithms achieve high performance in the first stage but struggle to achieve high performance in the second stage. Our algorithm extends techniques described by Karlsson et al. [Parallel Comput., 37 (2011), pp. 771--782] to also achieve high performance in the second stage. Experiments in a shared memory environment demonstrate that the algorithm can outperform state-of-the-art sequential algorithms using parallel BLAS. Future work will need to determine whether our algorithm can also outperform parallelized versions of these algorithms.
Keyword:
words. generalized eigenvalues
Hessenb erg-triangular
parallel algorithm
期刊
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2.6
论文数:
5.1K
被引数:
1.8W
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