kernel that runs for too long time it hangs

If a kernel runs for more than 8 seconds, it freezes the computer and cannot recover. What can I do?

Setting: Windows XP 32 bits, Dell Precision 7400 Xeon 5420 CPU, 2GB memory, GTX 280 GPU.

Thank you,

Use a dedicated compute GPU–you’re hitting the watchdog timer. It should recover, but there are some cases where it won’t right now. Those have all been fixed in 2.2.