caffe: use MPI compiler when using hdf5+mpi (#17125)
caffe: use MPI compiler when using hdf5+mpi (#17125)


iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,LLNL/spack,LLNL/spack