Visualization

Under the "Visualization" main menu item, there are five types of raw data visualization. The five items are "3D Visualization", "Data Summary", "Create Boxchart", "Create Histogram" and "Create Normal Probability Chart". For the Boxchart, Histogram and Normal Probability Charts, you can either select one metric in the trial (which selects all events by default), or expand the metric and select events of interest.

3D Visualization

When the "3D Visualization" is requested, PerfExplorer examines the data to try to determine the most interesting events in the trial. That is, for the selected metric in the selected trial, the database will calculate the weighted relative variance for each event across all threads of execution, in order to find the top four "significant" events. These events are selected by calculating: stddev(exclusive) / (max(exclusive) - min(exclusive)) * exclusive_percentage. After selecting the top four events, they are graphed in an OpenGL window.

3D
		Visualization of multivariate data
image::3dvisualization.png[3D
		Visualization of multivariate data,width="6in",align="center"]

Data Summary

In order to see a summary of the performance data in the database, select the "Show Data Summary" item under the "Visualization" main menu item.

Data
		Summary Window
image::datasummary.png[Data
		Summary Window,width="6in",align="center"]

Creating a Boxchart

In order to see a boxchart summary of the performance data in the database, select the "Create Boxchart" item under the "Visualization" main menu item.

Boxchart
Figure 1. Boxchart

Creating a Histogram

In order to see a histogram summary of the performance data in the database, select the "Create Histogram" item under the "Visualization" main menu item.

Histogram
Figure 2. Histogram

Creating a Normal Probability Chart

In order to see a normal probability summary of the performance data in the database, select the "Create NormalProbability" item under the "Visualization" main menu item.

Normal
		Probability
image::normalprobability.png[Normal
		Probability,width="6in",align="center"]