Question - how does the client even work?

Questions and comments regarding the GPU2 client running on a nVidia GPU that supports CUDA.

Question - how does the client even work?

Postby bowman » Sat Aug 02, 2008 7:57 pm

What is the maximum kernel execution time?

On Windows, individual GPU program launches have a maximum run time of around 5 seconds. Exceeding this time limit usually will cause a launch failure reported through the CUDA driver or the CUDA runtime, but in some cases can hang the entire machine, requiring a hard reset.

This is caused by the Windows "watchdog" timer that causes programs using the primary graphics adapter to time out if they run longer than the maximum allowed time.

For this reason it is recommended that CUDA is run on a GPU that is NOT attached to a display and does not have the Windows desktop extended onto it. In this case, the system must contain at least one NVIDIA GPU that serves as the primary graphics adapter.


Did you guys fix this? Or does the client 'pause' slightly for every 4.9 seconds? :wink: I remember reading this before the release but I never gave it any thought afterwards.
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Re: Question - how does the client even work?

Postby theo343 » Sat Aug 02, 2008 8:10 pm

Iv never experienced it and they do recommend you start GPU folding before starting CPU folding.
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