Greg Humphreys is a Software Lead at NVIDIA where he works on OptiX, a high performance GPU raytracing engine. Part raytracer, part compiler, part runtime binary modification system, and part operating system, OptiX allows users to create very high performance raytracers that adapt to both the GPU architecture they are running on as well as the dataset they are currently rendering.
Previously Greg has worked at Aggregate Knowledge, a startup company working in analytics, data mining, recommendations, and online advertising. Greg was also a professor of Computer Science at the University of Virginia, and received his Ph.D. from the Stanford Graphics Lab.