|Preconditioned Krylov Solvers on GPUs
|Year of Publication
|Anzt, H., M. Gates, J. Dongarra, M. Kreutzer, G. Wellein, and M. Kohler
|gpu, ILU, Jacobi, Krylov solvers, Preconditioning
In this paper, we study the effect of enhancing GPU-accelerated Krylov solvers with preconditioners. We consider the BiCGSTAB, CGS, QMR, and IDR(s) Krylov solvers. For a large set of test matrices, we assess the impact of Jacobi and incomplete factorization preconditioning on the solvers’ numerical stability and time-to-solution performance. We also analyze how the use of a preconditioner impacts the choice of the fastest solver.
Preconditioned Krylov Solvers on GPUs
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