13   Vec          xx, s1, s2;  in main()  local
87     PetscCall(VecDuplicate(xx, &s2));  in main()
91       PetscCall(MatMult(sA, xx, s2));  in main()
93       PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
99     PetscCall(VecDestroy(&s2));  in main()
144     PetscCall(VecDuplicate(xx, &s2));  in main()
148       PetscCall(MatMult(submatsA[i], xx, s2));  in main()
150       PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
156     PetscCall(VecDestroy(&s2));  in main()
168     PetscCall(VecDuplicate(xx, &s2));  in main()
172       PetscCall(MatMult(submatsA[i], xx, s2));  in main()
174       PetscCall(VecNorm(s2, NORM_2, &s2norm));  in main()
180     PetscCall(VecDestroy(&s2));  in main()