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:
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April 8, 2024 |