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cad_andry's picture

Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Wednesday, 16 November, 2011 - 10:51 by cad_andry in

Hi!
Using code like 

var events = new ComputeEventList();
queue.Execute(kernel, null, new long[] { len }, null, events);
events.Last.Completed += ComputeFinished;

to execute both on GPU and CPU async contexts (amd, driver version 11.10).
On cpu context it always doing well, but never runs on GPU context.

Are there any solutions to fix this?

Thanks.

‹ Rendering 2D Labels on 3D Objects very strange artifacts ›

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nythrix's picture

Re: Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Wednesday, 16 November, 2011 - 17:05 by nythrix

I think this works on Nvidia GPUs, which could mean it is a driver issue. However, let me check again, as soon as I get home tonight.

cad_andry's picture

Re: Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Thursday, 17 November, 2011 - 10:14 by cad_andry

Any results?

nythrix's picture

Re: Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Monday, 21 November, 2011 - 21:16 by nythrix

I finally got to do some tests. I tried every SDK in my system with these results:
a) Both AMD APP and Intel OpenCL SDK are capable of calling back into the Computed event but,
b) Nvidia's implementation does NOT trigger it!

I tested these callbacks a while ago but I'm not sure if I tested a callback from a GPU. Let me check what's going on.

P.S.: Also, I'm downloading some newer drivers to see if that makes any difference.

cad_andry's picture

Re: Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Tuesday, 22 November, 2011 - 07:11 by cad_andry

Hm.. I`m using AMD based station to test (phenom x4 + hd4500)
Driver version is 11.10
win7x64

nythrix's picture

Re: Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Tuesday, 10 January, 2012 - 23:12 by nythrix

It would seem I found the problem. I'll update Cloo in a couple of days.
Thanks for your feedback!

nythrix's picture

Re: Cloo & GPU & ComputeEvent`s Completed handler issue

Posted Wednesday, 11 January, 2012 - 22:11 by nythrix

Fixed in 0.9.1.