538       KSP ksp_coarse;  in main()  local
542       PetscCall(PCMGGetCoarseSolve(pc, &ksp_coarse));  in main()
543       PetscCall(KSPSetType(ksp_coarse, KSPPREONLY));  in main()
544       PetscCall(KSPSetOperators(ksp_coarse, jacob_mat_coarse, jacob_mat_coarse));  in main()
545       PetscCall(KSPSetOptionsPrefix(ksp_coarse, "coarse_"));  in main()
548       PetscCall(KSPGetPC(ksp_coarse, &pc_coarse));  in main()
552       PetscCall(KSPSetFromOptions(ksp_coarse));  in main()
704       KSP    ksp_coarse;  in main()  local
708       PetscCall(PCMGGetCoarseSolve(pc, &ksp_coarse));  in main()
709       PetscCall(KSPGetType(ksp_coarse, &ksp_type));  in main()
710       PetscCall(KSPGetPC(ksp_coarse, &pc_coarse));  in main()