-ksp_gmres_unmodifiedgramschmidt
-mg_coarse_ksp_type preonly
-mg_coarse_pc_type redundant
-mg_coarse_redundant_pc_type lu
-mg_levels_ksp_max_it 1
-mg_levels_ksp_type richardson
-mg_levels_pc_type asm
-mg_levels_sub_pc_ilu_levels 1
-pc_mg_type multiplicative



