1 Reply Latest reply on Jul 30, 2010 8:17 AM by omkaranathan

    elapsed Time difference between clock function and time function while using AMD GPU in linux

    rkreddy
      why the elaspsed time is diffrent for clock and time function when using AMD GPU for processing

      I am using 9250 Firestream card O/S redhat linux

       

      Intially i used clock function to know the time elapsed for processing when using GPU

      i reduced the time to 0.9 sec from 6 sec bye changing the kernel and group size

      latter i tried with time() function now time function retunts the elapsed time as 12 sec why it so

       

      while running Nvidia both functions are returning same time as 2.5 sec 

       

      please give me some suggesions