12   Vec          xx, s1, s2;  in main()  local
110     PetscCall(VecCreateSeq(PETSC_COMM_SELF, mm, &xx));  in main()
111     PetscCall(VecDuplicate(xx, &s1));  in main()
112     PetscCall(VecDuplicate(xx, &s2));  in main()
114       PetscCall(VecSetRandom(xx, rdm));  in main()
115       PetscCall(MatMult(submatA[i], xx, s1));  in main()
116       PetscCall(MatMult(submatB[i], xx, s2));  in main()
122     PetscCall(VecDestroy(&xx));  in main()
133     PetscCall(VecCreateSeq(PETSC_COMM_SELF, mm, &xx));  in main()
134     PetscCall(VecDuplicate(xx, &s1));  in main()
135     PetscCall(VecDuplicate(xx, &s2));  in main()
137       PetscCall(VecSetRandom(xx, rdm));  in main()
138       PetscCall(MatMult(submatA[i], xx, s1));  in main()
139       PetscCall(MatMult(submatB[i], xx, s2));  in main()
145     PetscCall(VecDestroy(&xx));  in main()