set(vtkIOParallelXdmf3CxxTests-MPI_NUMPROCS 2) vtk_add_test_mpi(vtkIOParallelXdmf3CxxTests tests TestXdmf3Parallel.cxx,NO_VALID,TESTING_DATA ) vtk_test_cxx_executable(vtkIOParallelXdmf3CxxTests tests)