Run Locks and Waits Analysis
Run the Locks and Waits analysis to identify synchronization objects that caused contention and fix the problem in the source.
To run an analysis:
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From the VTune Amplifier toolbar, click the New Analysis button.
VTune Amplifier result tab opens with the Choose Analysis Type window active.
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From the analysis tree on the left, select Algorithm Analysis > Locks and Waits.
The right pane is updated with the default options for the Locks and Waits analysis.
- Select the Analyze Intel runtimes and user synchronization checkbox.
- Click the Start button on the right command bar.
VTune Amplifier launches the nqueens_parallel executable that makes calculations, displays the execution time, and exits. VTune Amplifier finalizes the collected data and opens the results in the Locks and Waits viewpoint.
Note
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To make sure the performance of the application is repeatable, go through the entire tuning process on the same system with a minimal amount of other software executing.
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This tutorial explains how to run an analysis from the VTune Amplifier graphical user interface (GUI). You can also use the VTune Amplifier command-line interface (
amplxe-clcommand) to run an analysis. For more details, check the Command-line Interface Support section of the VTune Amplifier Help.
