FIXME : Add documentation
subroutine barrier_nocomm
# ifdef MPI
implicit none
integer :: ierror
!$OMP MASTER
call time_message(.false., time_mp_sync, ' MPI Sync')
!$OMP END MASTER
call mpi_barrier (mp_comm, ierror)
!$OMP MASTER
call time_message(.false., time_mp_sync, ' MPI Sync')
!$OMP END MASTER
# endif
end subroutine barrier_nocomm