..
   Generated automatically by cpp2rst

.. highlight:: c
.. role:: red
.. role:: green
.. role:: param


.. _mpi__communicator__size:

mpi::communicator::size
=======================

*#include <mpi/communicator.hpp>*



**Synopsis**

 .. rst-class:: cppsynopsis

       | int :red:`size` () const











Returns
^^^^^^^

The result of `MPI_Comm_size` if mpi::has_env is true, otherwise 1.