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Exploiting H-Matrices in Sparse Direct Solvers

Abstract : In this talk, we describe a preliminary fast direct solver using HODLR library to compress large blocks appearing in the symbolic structure of the PaStiX sparse direct solver. We will present our general strategy before analyzing the practical gains in terms of memory and floating point operations with respect to a theoretical study of the problem. Finally, we will discuss ways to enhance the overall performance of the solver.
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Contributor : Pierre Ramet Connect in order to contact the contributor
Submitted on : Wednesday, January 6, 2016 - 5:28:42 PM
Last modification on : Friday, November 18, 2022 - 9:25:53 AM


  • HAL Id : hal-01251812, version 1



Grégoire Pichon, Eric Darve, Mathieu Faverge, Pierre Ramet, Jean Roman. Exploiting H-Matrices in Sparse Direct Solvers. SIAM Conference on Parallel Processing for Scientific Computing (SIAM PP 2016), Apr 2016, Paris, France. ⟨hal-01251812⟩



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