CUDA Real Time Ray Tracing Tutorial
Here is a nice tutorial about how to code a real time ray tracer using CUDA. This tutorial is focused on sending a ray into a loaded triangulated model, computing the first hit position and do simple light calculations. It shows how to send the mesh data to CUDA via CUDA 1D texture or how to communicate between OpenGL and CUDA via PBO (Pixel Buffer Object).
More news about CUDA: NVIDIA CUDA @ Geeks3D.com.