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Polynomial Preconditioned GMRES in Trilinos: Practical Considerations for High-Performance Computing
Polynomial preconditioners for GMRES and other Krylov solvers are well-known but are infrequently used in large-scale software libraries or applications. This may be due to stability problems or complicated algorithms. We implement the GMRES polynomial as a preconditioner in the software library Trilinos and demonstrate that it is stable and …