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Version 2.0.0 Beta 3 March 11, 2010 Welcome to the second major release of the NVIDIA OptiX ray tracing engine and SDK. Within this package you will find the libraries required to experience the latest technology for programmable GPU ray tracing, plus ready-to-compile samples demonstrating classic ray tracing results and other basic functionality. Support: Please post comments or support questions on the NVIDIA developer forum that can be found here: http://developer.nvidia.com/forums/index.php?showforum=43. Questions that require confidentiality can be e-mailed to OptiX-Help@NVIDIA.com and someone on the development team will get back to you. System Requirements (for running binaries referencing OptiX) Graphics Hardware: Most CUDA capable devices are supported, though only the latest “GT200” or “Fermi” class GPU will provide support for running OptiX on multiple devices. Graphics Driver: The CUDA R190 or later driver is required. The drivers found corresponding to the CUDA 3.0 beta (http://forums.nvidia.com/index.php?showtopic=149959 195.39 for Windows and 195.17 for Linux) are highly recommended. The 196.21 drivers currently posted are incompatible with OptiX. Operating System: Windows XP/Vista/Win7 32-bit or 64-bit, Linux 32-bit or 64-bit, OSX 10.5+ (32-bit executable support only).