EA-AMG

0441065 - ÚGN 2015 RIV CZ eng L4 - Software
Kohut, Roman
EA-AMG.
Internal code: EA-AMG ; 2014
Technical parameters: k volnému využití
Economic parameters: software pro paralelní řešení 3D problémů lineární pružnosti
R&D Projects: GA MŠMT ED1.1.00/02.0070
Institutional support: RVO:68145535
Keywords : parallel solution of 3D linear elasticity * aggregation * two-level Schwarz preconditioner
Subject RIV: IN - Informatics, Computer Science
http://www.ugn.cas.cz/index.php?p=public/outputs.php

Software EA-AMG for parallel solution of 3D boundary value problems of linear elasticity. The software is based on the FEM and the corresponding linear system of algebraic equations is solved by the preconditioned conjugate gradient method with the additive two level overlapping Schwarz preconditioner. The stiffness matrix for the coarse problem is created by a new aggregation technique. Both Dirichlet and Neumann boundary conditions can be applied. In the second case, arising singular system can be efficiently solved making use of projections. Software package contains two codes. The code AGGREG serves for preparation of an aggregated matrix. The code SOLVER_AG is designed for the parallel solution of large linear systems and is parallelized with the aid of OpenMP paradigm.
Permanent Link: http://hdl.handle.net/11104/0244130