Hello, I am trying to use the hypre multigrid solver to solve a Poisson equation. However, on a test case with grid size 257x257 it takes 40 seconds to converge on one processor when I run with ./run -ksp_type richardson -pc_type hypre -pc_type_hypre boomeramg
Using the DMMG framework, the same problem takes less than a second, and the default gmres solver uses only four seconds. Am I somehow using the solver the wrong way, or is this performance expected? Regards Knut Erik Teigen
