SHMEM_BARRIER_ALL(3)               Open MPI               SHMEM_BARRIER_ALL(3)


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++:

          #include <mpp/shmem.h>

          void shmem_barrier_all(void)

       Fortran:

          include 'mpp/shmem.h'

          CALL SHMEM_BARRIER_ALL

DESCRIPTION
       The 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, shmem_barrier_all ensures
       completion of all previously issued local memory stores and remote
       memory updates issued via SHMEM functions such as shmem_put32(3).

EXAMPLES

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

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

       SEE ALSO:
          shmem_barrier(3) shmem_init(3)

COPYRIGHT
       2003-2026, The Open MPI Community

                               February 23, 2026          SHMEM_BARRIER_ALL(3)