680   IS          is_from_y, is_to_yi, is_from_u, is_to_uxi, is_to_uyi;  in HyperbolicInitialize()  local
913 …tscCall(ISCreateStride(PETSC_COMM_SELF, hi - lo, lo + 2 * i * user->mx * user->mx, 1, &is_from_u));  in HyperbolicInitialize()
914     PetscCall(VecScatterCreate(user->u, is_from_u, user->uxi[i], is_to_uxi, &user->uxi_scatter[i]));  in HyperbolicInitialize()
917     PetscCall(ISDestroy(&is_from_u));  in HyperbolicInitialize()
921 …l(ISCreateStride(PETSC_COMM_SELF, hi - lo, lo + (2 * i + 1) * user->mx * user->mx, 1, &is_from_u));  in HyperbolicInitialize()
922     PetscCall(VecScatterCreate(user->u, is_from_u, user->uyi[i], is_to_uyi, &user->uyi_scatter[i]));  in HyperbolicInitialize()
925     PetscCall(ISDestroy(&is_from_u));  in HyperbolicInitialize()
929     PetscCall(ISCreateStride(PETSC_COMM_SELF, hi - lo, lo, 1, &is_from_u));  in HyperbolicInitialize()
930 …PetscCall(VecScatterCreate(user->ui[i], is_from_u, user->uxi[i], is_to_uxi, &user->ux_scatter[i]));  in HyperbolicInitialize()
933     PetscCall(ISDestroy(&is_from_u));  in HyperbolicInitialize()
937     PetscCall(ISCreateStride(PETSC_COMM_SELF, hi - lo, lo + user->mx * user->mx, 1, &is_from_u));  in HyperbolicInitialize()
938 …PetscCall(VecScatterCreate(user->ui[i], is_from_u, user->uyi[i], is_to_uyi, &user->uy_scatter[i]));  in HyperbolicInitialize()
941     PetscCall(ISDestroy(&is_from_u));  in HyperbolicInitialize()
945 …tscCall(ISCreateStride(PETSC_COMM_SELF, hi - lo, lo + 2 * i * user->mx * user->mx, 1, &is_from_u));  in HyperbolicInitialize()
946     PetscCall(VecScatterCreate(user->u, is_from_u, user->ui[i], is_to_uxi, &user->ui_scatter[i]));  in HyperbolicInitialize()
949     PetscCall(ISDestroy(&is_from_u));  in HyperbolicInitialize()