Selective profiling using intel advisor/vtune

[Ashutosh_S_Londhe]

How can i do a selective profiling of my code using intel vtune or advisor. I dont want to perform the profiling of my full code. is there any options to do it for ex. encoding the section inside some pragma to tell vtune/advisor to do profiling of particular section of code

[Zakhar_M_Intel1 · Accepted solution]

Hello!

The most common method, applicable to both advisor and vtune, is using itt_pause() / itt_resume() API calls. Quick summary with example can be found here: https://software.intel.com/content/www/us/en/develop/articles/intel-advisor-collection-control-apis.html

Furthermore, selective profiling is an area where intel tools and specifically Intel Advisor have invested a lot and there are many different techniques provided.

So for Advisor please take a look at relatively complete materials with 5 sub-chapters at: https://software.intel.com/content/www/us/en/develop/documentation/advisor-user-guide/top/minimizing-analysis-overhead.html  As you can see  - with advisor you can select specific modules/libraries to be profiled or you can "mark-up" different loops and functions for profiling even without recompiling your code. And for itt_pause/itt_resume -  both vtune and advisor have more fine-tuning usage models (like start-paused mode), all described at the link above.

Another article (advisor-specific) on the topic is:  https://software.intel.com/content/www/ru/ru/develop/articles/managing-overhead-of-intel-advisor-analyses.html 

[Ashutosh_S_Londhe]

Thanks this will help

[IntelSupport]

Hi we have accepted your issue. Please let us know if you have any further questions.

[Ashutosh_S_Londhe]

No thanks. not further issue.

[IntelSupport]

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