receive_real_array Subroutine

  subroutine receive_real_array (a, src, tag)
    implicit none
    real, dimension (:), intent (out) :: a
    integer, intent (in) :: src
    integer, intent (in), optional :: tag
# ifdef MPI
    integer :: ierror
    integer :: tagp
    integer, dimension (mp_status_size) :: status
    tagp = 0
    if (present(tag)) tagp = tag
!$OMP MASTER
    call time_message(.false., time_mp_ptp, ' MPI Point-to-point')
!$OMP END MASTER
    call mpi_recv (a, size(a), mpireal, src, tagp, mp_comm, &
         status, ierror)
!$OMP MASTER
    call time_message(.false., time_mp_ptp, ' MPI Point-to-point')
!$OMP END MASTER
# else
    call mp_abort ("receive")
    UNUSED_DUMMY(src); UNUSED_DUMMY(tag)
    a = 0
# endif
  end subroutine receive_real_array