shmem_barrier_all
- Suspends the execution of the calling PE until all other PEs issue a call to this particular shmem_barrier_all() statement.
C or C++:
#include <mpp/shmem.h>
void shmem_barrier_all(void)
Fortran:
include 'mpp/shmem.h'
CALL SHMEM_BARRIER_ALL
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).
setup_data()
{
if (shmem_my_pe() == 0) {
setup();
}
/* All PEs wait for PE 0 to complete setup(). */
shmem_barrier_all();
}
shmem_barrier(3) shmem_init(3)