Intel® Advisor 2015 Tutorial: Find Where to Add Parallelism - C++ Sample

  • Intel® Parallel Studio XE 2015 Professional Edition for Linux*

  • Intel® Cluster Studio XE 2015 Cluster Edition for Linux*

This tutorial shows how to find where to add parallelism to a serial, C++ sample application using the Intel Advisor. It demonstrates an end-to-end workflow you can ultimately apply to your own applications:

  1. Survey the target executable to locate the loops and functions where your application spends the most time.

  2. In the target sources, add Intel Advisor annotations to mark possible parallel tasks and their enclosing parallel sites.

  3. Check Suitability to predict the maximum parallel performance speedup of the target based on these annotations.

  4. Check Correctness to predict parallel data sharing problems in the target based on these annotations.

  5. If the predicted maximum speedup benefit is worth the effort to fix the predicted parallel data sharing problems, fix the problems.

  6. Recheck Suitability to see how your fixes impact the predicted maximum speedup.

  7. If the predicted maximum speedup benefit is still worth the effort to add parallelism to the target, replace the annotations with parallel framework code that enables parallel execution.

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