OpenCL™ Developer Guide for Intel® Core™ and Intel® Xeon® Processors

  • 10/30/2018
  • Public Content
Contents

Why Optimizing Kernels Is Important?

As the OpenCL™ runtime calls an issued kernel many times, optimizing the kernel can bring performance gains. If you move a piece of code out of the innermost loop in a typical native code, move it from the kernel as well. Examples of code types that you might move out of the loop:
  • Edge detection
  • Constant branches
  • Variable initialization
  • Variable casts

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804