.. _shmem_barrier_all:


shmem_barrier_all
=================

.. include_body

:ref:`shmem_barrier_all` - Suspends the execution of the calling PE until all
other PEs issue a call to this particular shmem_barrier_all() statement.


SYNOPSIS
--------

C or C++:

.. code-block:: c++

   #include <mpp/shmem.h>

   void shmem_barrier_all(void)

Fortran:

.. code-block:: fortran

   include 'mpp/shmem.h'

   CALL SHMEM_BARRIER_ALL


DESCRIPTION
-----------

The :ref:`shmem_barrier_all` routine does not return until all other PEs have
entered this routine at the same point of the execution path.

Prior to synchronizing with other PEs, :ref:`shmem_barrier_all` ensures
completion of all previously issued local memory stores and remote
memory updates issued via SHMEM functions such as :ref:`shmem_put32`\ (3).


EXAMPLES
--------

::

   setup_data()
   {
     if (shmem_my_pe() == 0) {
       setup();
     }

     /* All PEs wait for PE 0 to complete setup().  */
     shmem_barrier_all();
   }


.. seealso::
   *shmem_barrier*\ (3) *shmem_init*\ (3)