Posted by Michael Bien on Sep 21, 2010; 4:11pm
URL: https://forum.jogamp.org/Timeout-Detection-and-Recovery-of-GPUs-through-WDDM-Windows-tp1555560p1555657.html

hehe,

cool so you found a way to trigger this windows "feature" :)

the only workaround I know is to try to spend less as 1s in a driver API call. Since you are using the driver, windows thinks you are also rendering with 60FPS - and everything else must be obviously broken software :)

regards,
michael


On 09/21/2010 05:52 PM, Demoscene Passivist [via jogamp] wrote:

This question is not directly related to JOGL/JOCL but rather a general problem with intensive GPU calculations using OpenGL/OpenCL.

Is there a programmatically way to disable "Timeout Detection and Recovery of GPUs through WDDM"  on Windows ? I'm currently implementing a raymarcher on the GPU and sometimes it takes quite long to calculate. After a couple of seconds Windows then resets the display driver, wich ofcourse crashes my application.

This behavior is a buildin safety mechanism in Windows to avoid locking the whole system when "only" the graphics driver crashes. Its quite useful, but when it comes to intensive GPGPU calculations its a real pain in the ass

The official suggestion is to "fiddle with some registry keys" or "buy a second graphics card" . Both ways seems to be unaccaptable to me. I guess OpenCL has the same issue when using kernels that render longer that a couple of seconds.

So has anyone found some kind of Windows-API function to disable this behavior ? Or some other workaround wich can be trigged from a running application ?

Thanks in advance for ur efforts ...

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