Step 1: Download the VTune Profiler

Get the desired version from the official page HERE

I used the version 2020.update2. The next steps can be followed as per the guide provided HERE. Open the PDF version for your OS. I am using Ubuntu 18.04.4 LTS. I will mention the steps I followed from it.

Step 2: Install Prerequisites

On Ubuntu* or Debian*, install the following libraries:

sudo apt-get install libgtk-3-0 libasound2 libxss1 libnss3

On Red Hat* Enterprise Linux or CentOS*, install the following libraries:

sudo yum install gtk3 alsa-lib libXScrnSaver nss

On Fedora*, install the following libraries:

sudo dnf install gtk3 alsa-lib libXScrnSaver nss

On SUSE* Linux* Enterprise Server (SLES), install the following libraries:

sudo zypper install gtk3 libasound2 libXss1 mozilla-nss

Step 3: Install with “Installer GUI”

Use the following steps to install :

1. Extract the installation package to a writeable directory with the following command:

   $ tar -xzf vtune_profiler_<version>.tar.gz
   

2. cd to the directory containing the extracted files.

3. Run the following command to launch the installer:

   $ ./install_GUI.sh
   

   Running it using sudo privilage, will install in HOME/opt/intel/. The installer will guide you through the installation process. You can install using the default options or customize your installation.

4. After installation succeeds, run the following command to establish the environment:

   For bash command interpreter:

   $ source <install-dir>/vtune-vars.sh
   

Step 4: Setup project in VTune

Refer to this Udacity tutorial video

Step 5: Source Environment

By default, the < install-dir > is the following:

• /opt/intel/vtune_profiler_< version > when installed with root permissions;

• $HOME/intel/vtune_profiler_< version > when installed with user permissions;

• /opt/intel/inteloneapi/vtune/< version > for Intel oneAPI Base Toolkit installation.

Run

$ source < install-dir >/env/vars.sh

Step 6: Run VTune

Run the GUI using

$ vtune-gui

For more info and on What can You do using VTune Amplifier, refer to the official site.

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Some Advanced concepts in VTune

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The advances profiling gives advantages as

• It gives the hardware usage and helps in optimizing the application to utilize all the underlying hardware.
• It helps in fixing areas of code that are not optimized.

The following tutorial shows how individual threads can be analysed.

In the analysis, the colors have the following significance

Color	Description
Green	Running Time
Brown	CPU Utilization
Red	Spin and Overhead Percentage

The line that took the most CPU Time can be found as