report Subroutine

   subroutine report(spec, avg_time, std_time, comm, rc)
      type(BW_BenchmarkSpec), intent(in) :: spec
      real, intent(in) :: avg_time
      real, intent(in) :: std_time
      integer, intent(in) :: comm
      integer, optional, intent(out) :: rc

      integer :: status
      real :: packet_gb
      real :: total_gb
      real :: bw
      integer :: npes
      integer :: rank
      integer, parameter :: WORD_SIZE = 4
      integer(kind=INT64) :: packet_size

      call MPI_Comm_size(comm, npes, status)
      _VERIFY(status)
      call MPI_Comm_rank(comm, rank, status)
      _VERIFY(status)
      _RETURN_UNLESS(rank == 0)

      packet_size = int(spec%nx,kind=INT64)**2 * 6 * spec%n_levs / spec%n_writers
      packet_gb = 1.e-9*(WORD_SIZE * packet_size)
      total_gb = packet_gb * npes
      bw = total_gb / avg_time

      call MPI_Comm_size(comm, npes, status)
      _VERIFY(status)

      write(*,'(3(1x,i9.0,","),6(f15.4,:,","))') &
           spec%nx, spec%n_levs, spec%n_writers, &
           total_gb, packet_gb, avg_time, bw, bw/npes, std_time/avg_time

      _RETURN(_SUCCESS)
   end subroutine report