Hello, I just wanted to ask if this capability (geometric multigrid in libMesh) is working properly before I dig deeper in the possible parameters for the PETSc mg. I’m trying to solve a linear elasticity problem with the settings:
-ksp_type cg -pc_type mg -pc_mg_levels 3 -pc_mg_galerkin -pc_mg_type full But I get a lof of iterations (>1000) in the linear solver. I do pass the options –use_petsc_dm and –node_major_dofs. I noticed this capability is still very new and that the number of levels seems to be limited to 1. Does that mean that I should not use it at all? Thanks Miguel Miguel A. Salazar de Troya Graduate Scholar, Lawrence Livermore National Laboratory Ph.D. Candidate, University of Illinois at Urbana-Champaign B141 Rm: 1085-5 Ph: 1(925) 422-6411 _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
