Intel Advisor Roofline Example

Background:

• GFLOPs
• Arithmetic Intensity

Steps to Test the Roofline Toolkit

Steps:

1. Launching the Roofline Toolkit (GUI):
   • export PATH="/usr/local/intel/oneapi/advisor/latest/bin64:$PATH"
   • advixe-gui



2. Creating a new project
   • Click on File > New > Project
   
   
   
   • Set a Project Name
   
   
   



3. Selecting Binaries
   • Select the Survey Hotspot Analysis tab and click on Application > Browse. Select your binary in the new window
   



4. Start Data Collection
   • Select the CPU / Memory Roofline Insights button
   
   
   
   • Select the desired Accuracy and click on the Play button to start data collection. (Tests with higher overhead repeat experiments to report consistent results)
   
   
   



5. Viewing Results
   • Navigate to the "Survey & Roofline" Tab. Then click on "Roofline" to see the roofline chart
   
   
   
   • The Red circle represents the part of code where the most amount of time is spent
   • Look at the "source" section to identify the part of code which consumes the most time. (The -g flag must be enabled during compilation to see this)

Created by Vidit Save 1/30/2023