Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Campos, FO; Oliveira, RS; dos Santos, RW.
Performance comparison of parallel geometric and algebraic multigrid preconditioners for the bidomain equations
LECT NOTE COMPUT SCI. 2006; 3991: 76-83.
Doi: 10.1007/11758501_15
Web of Science
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- Führende Autor*innen der Med Uni Graz
- Campos Fernando Otaviano
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- Abstract:
- The purpose of this paper is to discuss parallel preconditioning techniques to solve the elliptic portion (since it dominates computation) of the bidomain model, a non-linear system of partial differential equations that is widely used for describing electrical activity in the heart. Specifically, we assessed the performance of parallel multigrid preconditioners for a conjugate gradient solver. We compared two different approaches: the Geometric and Algebraic Multigrid Methods. The implementation is based on the PETSc library and we reported results for a 6-node Athlon 64 cluster. The results suggest that the algebraic multigrid preconditioner performs better than the geometric multigrid method for the cardiac bidomain equations.