Summary
In this paper, we investigate the effectiveness of hierarchical matrix techniques when used as the linear solver in a certain domain decomposition algorithm. In particular, we provide a direct performance comparison between an algebraic multigrid solver and a hierarchical matrix solver which is based on nested dissection clustering within the software package PLTMG.
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Ovall, J.S. Hierarchical matrix techniques for a domain decomposition algorithm. Computing 80, 287–297 (2007). https://doi.org/10.1007/s00607-007-0235-1
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DOI: https://doi.org/10.1007/s00607-007-0235-1