Intel® VTune™ Amplifier for Systems Performance Profiler with Intel® Energy Profiler helps you speed up and optimize execution of your code on Linux* embedded platforms, Android* or Windows* systems providing the following types of analysis:
Performance analysis: Find serial and parallel code bottlenecks, analyze algorithm choices, GPU engines usage, and understand where and how your application can benefit from available hardware resources.
Intel Energy Profiler analysis: Analyze power events and identify those that waste energy.
VTune Amplifier for Systems is available as part of the Intel System Studio.
Note
Local data collection on the OS X platforms is not possible.
Prerequisites
For remote analysis, set up your target Linux* | Android* system.
For hardware event-based sampling analysis, make sure you have the sampling driver installed. Note that for Linux targets the sampling driver detects the kernel update and automatically attempts to rebuild and load the driver at the boot time. If, for some reasons, the sampling driver cannot be installed, the VTune Amplifier automatically enables driverless Perf*-based collection providing limited event-based sampling analysis options.
For Intel Energy Profiler analysis, make sure to have the appropriate drivers installed for your target Linux | Android system.
For system requirements, see the product Release Notes.
Get Started with Performance Analysis
Step 1: Start the VTune Amplifier
For GUI interface, start the VTune Amplifier from the Launchpad or run the
amplxe-guicommand.For command line interface, run the
amplxe-clcommand.
By default, the product is installed to /Applications/Intel VTune Amplifier 2016 for Systems.app.
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Step 2: Create a Project for Your Remote Analysis Target
Build your target application in the Release mode with all optimizations enabled.
- Create a VTune Amplifier project:
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menu button in the right corner and go to New > Project... .Specify the project name and location in the Create Project dialog box.
In the Analysis Target tab, select a remote Linux or Android target system from the left pane and select an analysis target type from the right pane.
Configure your target: application location, parameters and search directories (if required).
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Step 3: Configure Analysis
Switch to the Analysis Type tab.
From the left pane, select an analysis type applicable to your remote platform and configure analysis options in the right pane.
Click the Start button on the right to launch the analysis.
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Step 4: View and Analyze Performance Data
When data collection completes, the VTune Amplifier opens the result in the default viewpoint, which is a preset configuration of windows for an analysis result. You may switch between different viewpoints to analyze the data from different perspectives using different sets of performance metrics.
Start your analysis with the Summary window to get an overview of the application performance and then switch to other windows to explore the performance deeper at the granularity of function, source line and so on.
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Get Started with Energy Analysis
Depending on your target system, the VTune Amplifier uses different collectors for energy and power analysis. For example, to use the Intel SoC Watch collector for Android OS on the Intel microarchitecture code name Haswell:
Install the Intel SoC Watch collector on the target Android system:
Unzip the collector package on the host. The package is available from
<system-studio-install-dir>/targets/system_studio_target.tgz.Run the
socwatch_android_<version>/socwatch_android_install.shscript on your OS X host to install the collector on the Android target.
The script installs the
socwatchexecutables to the/data/socwatchdirectory on the target by default. Use the-doption to select a different install directory and the-soption to define a specific Android device if multiple devices are connected to the host via adb.Load the device drivers and confirm they are loaded:
> insmod /lob/modules/socperf_<version>.ko> insmod /lib/modules/SOCWATCH_<version>.ko> lsmodRun the data collection on the target. For example:
>./socwatch -t 60 -f cpu-cstate -m -o ./results/testwhere:
-t 60specifies collection duration in seconds,-f cpu-cstateenables C-state and wakeups analysis, and-mspecifies the maximum level of detail. The analysis result*.sw1file will be located in the./results/testdirectory.Copy the result file (
*.sw1) to the host.Open/create a VTune Amplifier project and click the Image may be NSFW.
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Import toolbar button to import the energy analysis result file into the project.Explore the Platform Power Analysis viewpoint to view the collected data.
Documentation and Resources
Legal Information
Intel, VTune and the Intel logo are trademarks of Intel Corporation in the U.S. and/or other countries.
* Other names and brands may be claimed as the property of others.
Microsoft, Windows, and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the United States and/or other countries.
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