15   IS              isrows, iscols;  in main()  local
43   PetscCall(MatGetOwnershipIS(A, &isrows, &iscols));  in main()
46   PetscCall(ISGetLocalSize(iscols, &ncols));  in main()
47   PetscCall(ISGetIndices(iscols, &cols));  in main()
59   PetscCall(ISRestoreIndices(iscols, &cols));  in main()
61   PetscCall(ISDestroy(&iscols));  in main()
75   PetscCall(MatGetOwnershipIS(B, &isrows, &iscols));  in main()
78   PetscCall(ISGetLocalSize(iscols, &ncols));  in main()
79   PetscCall(ISGetIndices(iscols, &cols));  in main()
91   PetscCall(ISRestoreIndices(iscols, &cols));  in main()
93   PetscCall(ISDestroy(&iscols));  in main()