5 Replies Latest reply on Nov 15, 2010 2:55 PM by eduardoschardong

    Kernel hangs...

    eduardoschardong

      I'm experiencing this strange bug I have a kernel that iterates x elements over each other (just for information, x is a bit more than 3 million) like:

       

      int i = get_global_id(0);

      if (i >= Length[0]) return;

      int count = Length[0];

      for (int j = 0; j < count; j++)

      ;//the iteration
      Well... it hangs... replacing the "count" in "for" for 100 runs ok in about 7 second, replacing by 3200 it doesn't return (waited 24 hours), SKA shows that for up to 200 and a few it fully unroll the loop, for more than 215 or so it creates the loop but never execute the PREDNE_INT.
      I didn't allowed it to run for all the 3 million iterations... I'm hoping to get the results from smaller constants first.
      Also... There is anyway to interrupt long running kernels? I had to boot the computer...
      And a sidebug but I'm not sure it's AMD's, I can't post a topic in IE9.