quote: What are GPU's and how can they help FAH? GPU's are Graphics Processing Units -- chips used in today's PC's to help speed high performance graphics, such as 3D games or 3D scientific visualization. GPUs have the possibility to perform an enormous number of Floating Point OPerations (FLOPs). However, they achieve this high performance by losing generality -- there are only certain types of calculations which would be well-suited to GPUs. However, after much work, we have been able to write a highly optimized molecular dynamics code for GPU's, achieving a 20x to 40x speed increase over comparable CPU code for certain types of calculations in FAH. This means that we will be able to make an enormous advance over what we could do only just a few years ago.