title: Error -1001 in clGetPlatformIDs Call !
body: <p>I am trying to start working with OpenCL. I have two NVidia graphics card, I installed "developer driver" as well as SDK from NVidia website. I compiled the demos but when I run</p>
  
  <p>./oclDeviceQuery</p>
  
  <p>I see:</p>
  
  <blockquote>
    <p>OpenCL SW Info:</p>
    
    <p>Error -1001 in clGetPlatformIDs Call
    !!!</p>
  </blockquote>
  
  <p>How can I fix it? Does it mean my nvidia cards cannot be detected? I am running Ubuntu 10.10 and X server works properly with nvidia driver. </p>
  
  <p>I am pretty sure the problem is not related to file permissions as it doesn't work with sudo either.</p>