Application of the Parallel Dichotomy Algorithm for solving Toeplitz tridiagonal systems of linear equations with one right-hand side
Institute of Computational Mathematics and Mathematical Geophysics（计算数学与数学地球物理研究所）；Budker Institute of Nuclear Physics（布德克核物理研究所）；Novosibirsk State University（新西伯利亚国立大学）
Andrew V. Terekhov
备注：
New tests have been added
发表信息：
Journal of Parallel and Distributed Computing,2015,(87),pp. 102-108
Basing on a modification of the "Dichotomy Algorithm" (Terekhov, 2010), we propose a parallel procedure for solving tridiagonal systems of equations with Toeplitz matrices. Taking the structure of the Toeplitz matrices, we may substantially reduce the number of the "preliminary calculations" of the Dichotomy Algorithm, which makes it possible to effectively solve a series as well as a single system of equations. On the example of solving of elliptic equations by the Separation Variable Method, we show that the computation accuracy is comparable with the sequential version of the Thomas method, and the dependence of the speedup on the number of processors is almost linear. The proposed modification is aimed at parallel realization of a broad class of numerical methods including the inversion of Toeplitz and quasi-Toeplitz tridiagonal matrices.
High-performance modeling acoustic and elastic waves using the Parallel Dichotomy Algorithm
Institute of Computational Mathematics and Mathematical Geophysics（计算数学与数学地球物理研究所）；Budker Institute of Nuclear Physics（布德刻核物理研究所）；Novosibirsk State University（新西伯利亚国立大学）
On $τ$-preconditioners for a quasi-compact difference scheme to Riesz fractional diffusion equations with variable coefficients
Hanshan Normal University（韩山师范学院）；Southwestern University of Finance and Economics（西南财经大学）；University of Insubria（因苏布里亚大学）；University of Uppsala（乌普萨拉大学）
