2 Replies Latest reply on Jan 31, 2017 5:20 AM by dipak

    OpenCL same kernel, R7-260x and Rx480 produce different result

    song.h

      For same application, I used R7-260x (driver: fglrx, os: ubuntu 14.04) and Rx480(driver: amdgpu-pro, os: ubuntu16.04), they produced different result.

      The application is:

      Romein-gridding/Gridding-0.2 at master · awson/Romein-gridding · GitHub

       

      If I modified the kernel (see the attachment), they can produce the same result, but for the runtime , the Rx480's performance is much worse than R7.