59   Vec                  X, X_loc, rhs;  in main()  local
221   PetscCall(DMCreateGlobalVector(dm_mesh, &X));  in main()
222   PetscCall(VecGetLocalSize(X, &l_size));  in main()
223   PetscCall(VecGetSize(X, &g_size));  in main()
226   PetscCall(VecDuplicate(X, &rhs));  in main()
244     PetscCall(VecGetType(X, &vec_type));  in main()
320     PetscCall(KSPSolve(ksp, rhs, X));  in main()
332   PetscCall(VecZeroEntries(X));  in main()
341   PetscCall(KSPSolve(ksp, rhs, X));  in main()
392     PetscCall(VecViewFromOptions(X, NULL, "-solution_view"));  in main()
399       PetscCall(ComputeL2Error(X, &l2_error, op_error_ctx));  in main()
423     PetscCall(VecView(X, vtk_viewer_soln));  in main()
428   PetscCall(VecDestroy(&X));  in main()