Results 21 to 30 of about 9,971 (304)
haldaas/Nystrom--Schur-Preconditioner: version reproducing paper numerical experiments
, 2021 A two-level Nyström--Schur preconditioner for SPD ...
Hussam Al Daas
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Algorithms, 2021 Incomplete Sparse Approximate Inverses (ISAI) has shown some advantages over sparse triangular solves on GPUs when it is used for the incomplete LU based preconditioner.
Wenpeng Ma, Wu Yuan, Xiazhen Liu
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A new approximate inverse preconditioner based on the Vaidya’s maximum spanning tree for matrix equation AXB = C [PDF]
Iranian Journal of Numerical Analysis and Optimization, 2019 We propose a new preconditioned global conjugate gradient (PGL-CG) method for the solution of matrix equation AXB = C, where A and B are sparse Stieltjes matrices. The preconditioner is based on the support graph preconditioners.
K. Rezaei, F. Rahbarnia, F. Toutounian
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Mathematics, 2021 In many fields of science and engineering, partial differential equation (PDE) constrained optimal control problems are widely used. We mainly solve the optimization problem constrained by the time-periodic eddy current equation in this paper. We propose
Yan-Ran Li, Xin-Hui Shao, Shi-Yu Li
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The ILUCP Preconditioner [PDF]
PAMM, 2004 AbstractWe introduce a new incomplete LU‐type preconditioner which combines the advantages of Crout's formulation of Gaussian elimination with pivoting. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Fractal and Fractional, 2023 Fractional derivatives and regime-switching models are widely used in various fields of finance because they can describe the nonlocal properties of the solutions and the changes in the market status, respectively.
Xu Chen +3 more
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ILU preconditioning based on the FAPINV algorithm [PDF]
Opuscula Mathematica, 2015 A technique for computing an ILU preconditioner based on the factored approximate inverse (FAPINV) algorithm is presented. We show that this algorithm is well-defined for H-matrices.
Davod Khojasteh Salkuyeh +2 more
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A Preconditioner for the Ohta--Kawasaki Equation [PDF]
SIAM Journal on Matrix Analysis and Applications, 2017 We propose a new preconditioner for the Ohta--Kawasaki equation, a nonlocal Cahn--Hilliard equation that describes the evolution of diblock copolymer melts. We devise a computable approximation to the inverse of the Schur complement of the coupled second-order formulation via a matching strategy.
Farrell, Patrick E., Pearson, John
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On the Construction of Deflation-Based Preconditioners [PDF]
SIAM Journal on Scientific Computing, 2001 New effective condition number bounds for deflated systems, both with and without preconditioning are given. Subdomain deflation is very easy to implement, and the method can be very efficiently implemented on distributed memory parallel computers. Numerical experiments for a steady-state are included.
J.E. Frank (Jason), C. Vuik
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A Preconditioner for Improved Fermion Actions [PDF]
Nuclear Physics B - Proceedings Supplements, 1999 SSOR preconditioning of fermion matrix inversions which is parallelized using a locally-lexicographic lattice sub-division, has been shown to be very efficient for standard Wilson fermions. We demonstrate here the power of this method for the Sheikholeslami-Wohlert improved fermion action and for a renormalization group improved action incorporating ...
Wolfgang Bietenholz +5 more
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