Hi Joseph
OK, that makes sense. Thank you for your help!
Thanks again
Claire
On 27/04/2020, 11:28, "Joseph Schuchart" wrote:
Hi Claire,
You cannot use MPI_Get (or any other RMA communication routine) on a
window for which no access epoch has been started. MPI_Win_fence starts
Hi Claire,
You cannot use MPI_Get (or any other RMA communication routine) on a
window for which no access epoch has been started. MPI_Win_fence starts
an active target access epoch, MPI_Win_lock[_all] start a passive target
access epoch. Window locks are synchronizing in the sense that they
Hi Joseph
Thank you for your reply. From what I had been reading I thought they were both
called "synchronization calls" just that one was passive (lock) and one was
active (fence), sorry if I've got confused!
So I'm asking do need either MPI_Win_fence or MPI_Win_unlock/lock in order to
use on
Claire,
> Is it possible to use the one-sided communication without combining
it with synchronization calls?
What exactly do you mean by "synchronization calls"? MPI_Win_fence is
indeed synchronizing (basically flush+barrier) but MPI_Win_lock (and the
passive target synchronization interface
