Intel® Advisor User Guide

User Guide

Contents

Run
CPU / Memory Roofline Insights
 Perspective from GUI

Prerequisite
: In the graphical-user interface (GUI): Create a project and specify an analysis target and target options.
To run the
CPU / Memory Roofline Insights
 perspective from the GUI:
  1. Configure the perspective and set analysis properties, depending on desired results:
    • Select a collection accuracy level with analysis properties preset for a specific result:
      • Low
        : Get the basic CPU Cache-Aware Roofline chart with self data metrics.
      • Medium
        : Get the detailed Memory-Level Roofline chart with total data metrics and an additional memory usage report.
    • Select the analyses and properties manually to adjust the perspective flow to your needs. The accuracy level is set to
      Custom
      .
    The higher accuracy value you choose, the higher runtime overhead is added to your application. The
    Overhead
     indicator shows the overhead for the selected configuration. For the
    Custom
     accuracy, the overhead is calculated automatically for the selected analyses and properties.
    By default, accuracy is set to
    Low
    . For more information, see CPU Roofline Accuracy Presets.
  2. Optional
    : If you want check for loop-carried dependency, select the
    Dependencies
     analysis. For more information about the Dependencies analysis and report, see Find Data Dependencies.
  3. Run the perspective: click button.
    While the perspective is running, you can do the following in the
    Analysis Workflow
     tab:
    • Control the perspective execution:
      • Stop data collection and see the already collected data: Click the button.
      • Pause data collection: Click the button.
      • Cancel data collection and discard the collected data: Click the button.
    • Expand an analysis with to control the analysis execution:
      • Pause the analysis: Click the button.
      • Stop the currently running analysis and start the next analysis selected: Click the button.
      • Interrupt execution of all selected analyses and see the already collected data: Click the button.
To run the
CPU / Memory Roofline Insights
 perspective with the Low accuracy from the command line interface:
advisor --collect=roofline --project-dir=./advi_results -- ./myApplication
To generate command lines for selected perspective configuration, click the
Command Line
 button.
Once the
CPU / Memory Roofline Insights
 perspective collects data, the report opens showing a
Summary
 tab. Continue to investigate the results:
After you run the
CPU / Memory Roofline Insights
 perspective, the collected Survey data becomes available for all other perspectives. If you switch to another perspective, you can skip the Survey step and run only perspective-specific analyses.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.