10 Replies Latest reply on Dec 21, 2009 7:52 AM by jins

    Using vector integer does not improve the performance for x86 multicore

    jins

      I am trying to improve the performance with OpenCL scheme for x86 multicore.

      And I re-wrote kernel program using vector integer instead of scalar integer.

      However it improves the performance very little (a few percent).

      For non-OpenCL case, using SSE doubles the performance.

      Does the current kernel compiler really generate SSE instructions for vector integer operations ?

      I doubt that a vector operation is emulated with scalar operations at least for integer.

      How do I know SSE is generated or not ?