shmem_barrier_all.openmpi3
Usage
C or C++:
#include <mpp/shmem.h> void shmem_barrier_all(void)
Fortran:
include 'mpp/shmem.h' CALL SHMEM_BARRIER_ALL
shmem_barrier_all - Suspends the execution of the calling PE until all other PEs issue a call to this particular shmem_barrier_all() statement.
Overview
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:
Releases
5 releases since Debian 9 (Stretch); the text changed 4 times.