Details

Autor(en) / Beteiligte

• Brannick, James J
• Falgout, Robert D

Titel

Compatible Relaxation and Coarsening in Algebraic Multigrid

Ist Teil von

• SIAM journal on scientific computing, 2010-01, Vol.32 (3), p.1393-1416

Ort / Verlag

Philadelphia: Society for Industrial and Applied Mathematics

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We introduce a coarsening algorithm for algebraic multigrid (AMG) based on the concept of compatible relaxation (CR). The algorithm is significantly different from standard methods, most notably because it does not rely on any notion of strength of connection. We study its behavior on a number of model problems and evaluate the performance of an AMG algorithm that incorporates the coarsening approach. Finally, we introduce a variant of CR that provides a sharper metric of coarse-grid quality and demonstrate its potential with two simple examples. [PUBLICATION ABSTRACT]