-element_type 2 -problem_type 0 -stokes_ksp_type fgmres -stokes_ksp_monitor_true_residual -stokes_ksp_max_it 1 -stokes_ksp_view -mx 40 -stokes_pc_type fieldsplit -stokes_fieldsplit_p_ksp_type gcr -stokes_fieldsplit_p_ksp_rtol 1.0e-1 -stokes_fieldsplit_p_ksp_max_it 4 -stokes_fieldsplit_p_pc_type lu -stokes_fieldsplit_p_ksp_converged_reason -stokes_fieldsplit_u_ksp_type gmres -stokes_fieldsplit_u_pc_type lu # -stokes_fieldsplit_u_pc_type mg # -stokes_fieldsplit_u_pc_mg_levels 2