119     Mat A00, A11, A0a0a, A0a0b;  in main()  local
120     PetscCall(MatGetLocalSubMatrix(A, isl0, isl0, &A00));  in main()
122     PetscCall(MatGetLocalSubMatrix(A00, isl0a, isl0a, &A0a0a));  in main()
123     PetscCall(MatGetLocalSubMatrix(A00, isl0a, isl0b, &A0a0b));  in main()
134     PetscCall(MatRestoreLocalSubMatrix(A00, isl0a, isl0a, &A0a0a));  in main()
135     PetscCall(MatRestoreLocalSubMatrix(A00, isl0a, isl0b, &A0a0b));  in main()
136     PetscCall(MatRestoreLocalSubMatrix(A, isl0, isl0, &A00));  in main()
146     Mat      A00, A0a0a, A0a0b;  in main()  local
148     PetscCall(MatGetLocalSubMatrix(A, isl0, isl0, &A00));  in main()
149     PetscCall(MatGetLocalSubMatrix(A00, isl0a, isl0a, &A0a0a));  in main()
150     PetscCall(MatGetLocalSubMatrix(A00, isl0a, isl0b, &A0a0b));  in main()
155     PetscCall(MatRestoreLocalSubMatrix(A00, isl0a, isl0a, &A0a0a));  in main()
156     PetscCall(MatRestoreLocalSubMatrix(A00, isl0a, isl0b, &A0a0b));  in main()
157     PetscCall(MatRestoreLocalSubMatrix(A, isl0, isl0, &A00));  in main()