11 Replies Latest reply on Mar 10, 2016 7:06 AM by ribalda

    Drop in fglrx OpenCL performance: 14.12 vs 15.5

    ribalda

      Hello, Using the latest linux driver shows a much worse performance for float16 and double16. Is this expected?

       

      Meassured with clpeak:

      driver_version | 1642.5 (sse2) -> 1702.3 (sse2)

       

      float16| 9.96633 -> 1.91836 Mflops

      double16| 2.37198 -> 0.640011 Mflops

       

      clinfo differences:

      SVM capabilities:

      - Coarse grain buffer: Yes

      - Fine grain buffer: Yes

      - Fine grain system: Yes

      - Atomics: Yes

      + Coarse grain buffer: No

      + Fine grain buffer: No

      + Fine grain system: No

      + Atomics: No

       

      Any pointers will be appreciated. Thanks!