Abstract
We compare the performance of two parallel preconditioners for a Newton-Krylov flow solver: an additive-Schwarz preconditioner and an approximate-Schur preconditioner. A previous study using only 24 processors was inconclusive regarding the relative performance of these preconditioners. In the present study, the approximate-Schur preconditioner is shown to be clearly superior when more than 100 processors are used. Overall, the Newton-Krylov algorithm with the approximate-Schur preconditioner produces a very efficient solver, ideal for serving as the core of an aerodynamic optimization algorithm. © 2011 Springer-Verlag Berlin Heidelberg.
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CITATION STYLE
Hicken, J. E., Osusky, M., & Zingg, D. W. (2011). Comparison of parallel preconditioners for a newton-krylov flow solver. In Computational Fluid Dynamics 2010 - Proceedings of the 6th International Conference on Computational Fluid Dynamics, ICCFD 2010 (pp. 457–463). Kluwer Academic Publishers. https://doi.org/10.1007/978-3-642-17884-9_57
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