I have got the cuda driver, toolkit and sdk installed in Ubuntu 10.04. I'm using nVidia Geforce 8600 GT card. Official website says my card is CUDA supported. But on running the deviceQuery that comes with the cuda sdk, I'm getting the following output. ./deviceQuery Starting... CUDA Device Query (Runtime API) version (CUDART static linking) There is no device supporting CUDA deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 134566327, CUDA Runtime Version = 0.0, NumDevs = 0 PASSED Press <Enter> to Quit... So, is GeForce 8600GT actually not CUDA supported, or is the problem with something else? Thanks.