ory
      explicitly first. This feature is commonly known as "CUDA-aware MPI".
      In case deal.II is compiled with MPI support and the MPI implementation
      supports this feature, you can tell deal.II to use it by configuring with
      <pre>

        -DDEAL_II_WITH_MPI=ON
        -DDEAL_II_MPI_WITH_DEVICE_SUPPORT=ON
      </pre>
      Note, that there is no check that detects if the MPI implementation
      really is CUDA-aware. Activating this flag for incompatible MPI libraries
      will lead to 