Forum topic

No Data Shown After Compilation of C Source Code with OpenMP


I'm now using Intel VTune Amplifier XE 2015. Also, I have no problem in running Tachyon (sample code).

Authored by Claudia W. Last updated on 02/11/2015 - 05:43
Forum topic

Unable to View Statistic of OpenMP Region CPU Usage Histogram


Currently, I'm running analysis on the executable file generated from the compilation of C source code.

Authored by Claudia W. Last updated on 04/29/2015 - 14:36
Forum topic

New tutorial available on analyzing hybrid OpenMP+MPI applications

Discover how to use Intel® Parallel Studio to tune hybrid applications by reviewing MPI utilization inefficiencies and balancing thread load levels.

Authored by Gergana S. (Blackbelt) Last updated on 09/19/2017 - 06:31
Forum topic

Huge overhead and spin time: openmp worker clone

Profiling my codes, I observed some curiously large overhead and spin time, which covered almost 100% of the CPU usage bar. I use Vtune 2013 and 2015. 

Authored by Last updated on 08/02/2014 - 21:56
Forum topic

How to get Wait Time and Wait Count from OpenMP applications?


I'm trying to get wait time and wait count data from some openmp applications, but it return always zero when using locksandwaits or N/A using the concurrency option.

Authored by Adriano G. Last updated on 10/24/2016 - 15:07
Forum topic

_kmp huge overhead and spin time for unkown calls in OpenMP?

I'm using Intel VTune to analyze my parallel application.

Authored by Last updated on 04/30/2017 - 01:28
Forum topic

OMPT support


Does VTune support OMPT APIs for OpenMP performance analysis?

Intel OpenMP Runtime Lib. supports OMPT APIs.





Authored by Last updated on 03/22/2016 - 14:02
File Wrapper

Parallel Universe Magazine - Issue 13, February 2013

Authored by admin Last updated on 12/12/2018 - 18:08
Forum topic

calculation of communication overhead

Hey guys,

How do you calculate communication overhead using VTune for an OpenMP program?


Authored by Last updated on 04/02/2014 - 13:34