Polynomial Preconditioned Arnoldi with Stability Control
Polynomial Preconditioned Arnoldi with Stability Control
复制标题
具有稳定性控制的多项式预调节 Arnoldi
DOI:
10.1137/19m1302430
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发表时间:
2021
影响因子:
3.1
通讯作者:
Morgan, Ronald
中科院分区:
文献类型:
--
作者:
Embree, Mark;Loe, Jennifer A.;Morgan, Ronald
Polynomial preconditioning can improve the convergence of the Arnoldi method for computing eigenvalues. Such preconditioning significantly reduces the cost of orthogonalization; for difficult problems, it can also reduce the number of matrix-vector products. Parallel computations can particularly benefit from the reduction of communication-intensive operations. The GMRES algorithm provides a simple and effective way of generating the preconditioning polynomial. For some problems high degree polynomials are especially effective, but they can lead to stability problems that must be mitigated. A two-level “double polynomial preconditioning” strategy provides an effective way to generate high-degree preconditioners.
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DOI:
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1987
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影响因子:
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通讯作者:
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DOI:
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发表时间:
2012
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
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作者:
Russell L. Carden;Mark Embree
通讯作者:
Mark Embree