Parallel algebraic hybrid solvers for large 3D convection-diffusion problems. Giraud, L. & Haidar, A. Numerical Algorithms, 51(2):151–177, 2009. doi abstract bibtex In this paper we study the parallel scalability of variants of an algebraic additive Schwarz preconditioner for the solution of large three dimensional convection diffusion problems in a non-overlapping domain decomposition framework. To alleviate the computational cost, both in terms of memory and floating-point complexity, we investigate variants based on a sparse approximation or on mixed 32- and 64-bit calculation. The robustness and the scalability of the preconditioners are investigated through extensive parallel experiments on up to 2,000 processors. Their efficiency from a numerical and parallel performance view point are reported.
@Article{ Giraud_2009aa,
abstract = {In this paper we study the parallel scalability of variants of an algebraic additive Schwarz preconditioner for the solution of large three dimensional convection diffusion problems in a non-overlapping domain decomposition framework. To alleviate the computational cost, both in terms of memory and floating-point complexity, we investigate variants based on a sparse approximation or on mixed 32- and 64-bit calculation. The robustness and the scalability of the preconditioners are investigated through extensive parallel experiments on up to 2,000 processors. Their efficiency from a numerical and parallel performance view point are reported.},
author = {Giraud, L. and Haidar, A.},
doi = {10.1007/s11075-008-9248-x},
file = {Giraud_2009aa.pdf},
journal = {Numerical Algorithms},
keywords = {ddm},
langid = {english},
number = {2},
pages = {151--177},
title = {Parallel algebraic hybrid solvers for large 3D convection-diffusion problems},
volume = {51},
year = {2009}
}
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