We have posted three, ready-to-use examples of interactive ray tracing using the upcoming OptiX ray tracing engine. These samples run using the OptiX engine, which runs entirely on the NVIDIA CUDA compute architecture. The performance of OptiX scales as number of computing cores within the GPU increases.
You can find the OptiX samples here http://developer.nvidia.com/object/optix-examples.html
Posted on 08/24/2009