I would like to specify task priority in OpenMP. This is not available in V17.0.1 (nor mentioned in release notes for V17.0.4).
My intended use if for an MPI with OpenMP application where on rank 0, a spawned task (or master thread prior to first task) runs at elevated task priority. This task manages a work queue for task issued to rank 0, as well as issuing task requests to other ranks via MPI messaging.
What I want to accomplish is to have the task manager task .NOT. participate in tasks that it enqueues. Should it do so (which I expect it is doing so now) then it will introduce an undesired latency in servicing the tasks to be issued to the additional MPI ranks (as well as to itself).
Ideally it would be nice to have
#pragma omp task deferred
Where the task is enqueued, but not run by the enqueuing task, except when enqueuing task issues taskwait.
This feature would not require implementation of task priority.
BTW my code restricts number of pending tasks thus would not have too many pending deferred tasks.
Jim Dempsey
