How can I stress the GPU

I would like to add some diagnostic code to our application that stresses both the CPU and GPU, and then measures heat. A third party tool is not an option. From what I can tell, CUDA is not an option either, as it requires Nvidia's compiler - is that right? As far as I can tell, my best option is DirectX. Anything simple and non visual on the GPU would do.

Platform: Window开发者_StackOverflows XP Embedded DirectX 9.0C

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Simply create a shader in HLSL which contain an endless loop.

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Turn off all culling and instancing and upload tones of triangle data to the gpu for processing and drawing, this will stress both the CPU (not too much these days) and the GPU should suffer under the overdrawing burden.

one should be able to use the code for any intro tutorial for this (ones that use DrawPrimitiveUP will stress the CPU more, but don't require creation of GPU buffers). you probably also want vsync disabled, so that the GPU works as fast as it can(aka it doesn't wait too much/at all on other events)