Sparse Approximations of the Schur Complement for Parallel Algebraic Hybrid Solvers in 3D

• 作 者: L. Giraud A. Haidar Y. Saad
• 机 构: JointINRIA-CERFACSLab-42AV.Coriolis,DepartmentofComputerScience,DepartmentofComputerScienceandEngine
• 出 处: 高等学校计算数学学报：英文版
• 发表日期: 2010年3期
• 关键词: 稀疏逼近 三维 代数 求解器 舒尔补 SCHUR补 SCHWARZ 不完全LU分解 Hybrid direct/iterative solver domain
• 基金项目: Acknowledgments This work was developed in the framework of the associated team PhyLeas （Study of parallel hybrid sparse linear solvers） funded by INRIA where the partners are INRIA, T.U. Brunswick an

<正>In this paper we study the computational performance of variants of an algebraic additive Schwarz preconditioner for the Schur complement for the solution of large sparse linear systems.In earlier works,the local Schur complements were computed e