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Element-based interpolation and coarse-grid selection in algebraic multigrid
J. Kraus, RICAM, Linz, Austria
Wednesday, January 14
at 16.30
in HG E1.1
The knowledge of individual finite element stiffness matrices can be exploited for constructing superior prolongation in Algebraic MultiGrid (AMG) methods, addressing non-M matrices, in particular. However, element-based methods rely on some mechanism for generating coarse element matrices.
This talk comments on element agglomeration and the basic principles of AMGe and spectral AMGe. Furthermore, a specific algorithm for computing artificial element matrices to be used in element-based AMG (AMGe) is proposed.
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