Those options make no sense for Jacobi. Jacobi preconditioning means just using the inverse of the diagonal of the matrix as the preconditioner. Perhaps you want -pc_type bjacobi
Barry On Jun 30, 2011, at 11:33 AM, tuane wrote: > Please, I need help. > > I execute my program with the options: > -tol 1.0e-06 -ksp_type cg -pc_type jacobi -sub_pc_type ilu -pc_factor_levels > 3 -ksp_view > > But the -sub_pc_type and -pc_factor_levels don't work. > > WARNING! There are options you set that were not used! > WARNING! could be spelling mistake, etc! > Option left: name:-pc_factor_levels value: 3 > Option left: name:-sub_pc_type value: ilu > > Can you help me? > > Thanks
