SHMEM_BARRIER_ALL(3) Open MPI SHMEM_BARRIER_ALL(3)
NAME
shmem_barrier_all - Suspends the execution of the calling PE until all
other PEs issue a call to this particular shmem_barrier_all() state-
ment.
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 com-
pletion 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)
4.1.2 Nov 24, 2021 SHMEM_BARRIER_ALL(3)
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