cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Archives Discussions

maxdz8
Elite
‎02-27-2015 11:04 AM

Why not a clWaitAnyEvent?

The behavior of select(...) is to wake up when at least one watched descriptor is "ready".

Pthreads take it easy with a single condition variable to pthread_cond_wait.

Windows has WaitForMultipleEvents(...) which allows to sleep pretty much on everything. It will wake up when at least one event is triggered but it is possible to require all events to be triggered.

clWaitForEvents returns CL_SUCCESS if the execution status of all events in event_list is CL_COMPLETE. Whoops. This explains a bug report I had some time ago.

I am in the process of implementing the event callback system to allow wait on a single event which will be triggered by the first event reaching CL_COMPLETE. Leaving aside I must do that with care, I wonder why there's no such thing as clWaitForAnyEvent.

0 Likes
1 Solution
jtrudeau
Staff
In response to maxdz8
Staff
‎03-02-2015 08:14 AM

That makes perfect sense to me. But what do I know.

Obviously AMD does not define the OpenCL standard or API. An engineer from here may chime in on this, but I suspect the best thing to do is to get this feedback into Khronos. I recommend you go here: Public discussions about the Khronos Dynamic Media APIs and make the same request.

Hope this helps.

View solution in original post

0 Likes
11 Replies