Hotspot-Recompile - Quickly Improve Application Performance

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April 14, 2010 12:00 AM PDT



This is the sample code described in the video:  http://software.intel.com/en-us/videos/hotspot-recompile-pisample/.  It simply computes the value of pi over several million iterations.  It is intended to show how to quickly use Intel(r) Parallel Amplifier to find the hotspot file, the file in which the biggest performance bottleneck function(s) is found.  Then, it shows how to configure the Microsoft Visual Studio project to only recompile that one file with Intel(r) Parallel Composer to optimize it.  Doing so results in about an 80% performance boost, without having to rebuild the whole application. 

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Optimization Notice

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


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PiSolver%2BSample.zip


This article applies to: ISN General,   Intel® Parallel Amplifier Knowledge Base,   Intel® Parallel Composer Knowledge Base