• 2019 Update 4
  • 03/20/2019
  • Public Content

Why Optimizing Kernel Code Is Important?

An issued kernel is called many times by the OpenCL™ run-time. Therefore optimizing the kernel can bring a substantional benefit. If you move something out of the innermost loop in a typical native code, move it from the kernel as well. For example:
  • Edge detection
  • Constant branches
  • Variable initialization
  • Variable casts

Product and Performance Information


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