All, We are planning to build a machine to be used to develop programs for statistic analysis with OpenCL. These programs will run on either nVidia or AMD/ATI video card. In the development machine we would like to use both an nVidia and an ATI/AMD video card to test the performance and compatibility of our programs on both platforms. Is it possible to have 2 cards from 2 different manufacturers in the same box under Linux? Is it a known source of problem? I could find info on this type of configuration under Windows but very little detailled info under Linux. Anybody has practical experience with this type of configuration to share? Thanks! Charles -- Charles Nadeau Ph.D. http://charlesnadeau.blogspot.com/