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Published in: BIT Numerical Mathematics 4/2018

22-05-2018

Asymptotic quadratic convergence of the parallel block-Jacobi EVD algorithm with dynamic ordering for Hermitian matrices

Authors: Gabriel Okša, Yusaku Yamamoto, Martin Bečka, Marián Vajteršic

Published in: BIT Numerical Mathematics | Issue 4/2018

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Abstract

The proof of the asymptotic quadratic convergence is provided for the parallel two-sided block-Jacobi EVD algorithm with dynamic ordering for Hermitian matrices. The discussion covers the case of well-separated eigenvalues as well as clusters of eigenvalues. Having p processors, each parallel iteration step consists of zeroing 2p off-diagonal blocks chosen by dynamic ordering with the aim to maximize the decrease of the off-diagonal Frobenius norm. Numerical experiments illustrate and confirm the developed theory.

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Appendix
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Metadata
Title
Asymptotic quadratic convergence of the parallel block-Jacobi EVD algorithm with dynamic ordering for Hermitian matrices
Authors
Gabriel Okša
Yusaku Yamamoto
Martin Bečka
Marián Vajteršic
Publication date
22-05-2018
Publisher
Springer Netherlands
Published in
BIT Numerical Mathematics / Issue 4/2018
Print ISSN: 0006-3835
Electronic ISSN: 1572-9125
DOI
https://doi.org/10.1007/s10543-018-0711-3

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