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Intel VTune: Performance Analysis on Intel processors

This document describes the availability of the VTune profiling and performance analysis tool on the LRZ HPC systems

Introductory Remarks

What is VTune?

VTune supports profiling and evaluation of performance characteristics for single- and multi-threaded programs on all Intel-based hardware platforms. Since 2011, the new name for VTune is Intel Amplifier XE.

VTune availability on LRZ's HPC platforms

VTune is provided on HPC systems which are based on Intel processors. On non-Intel processors or systems on which no kernel driver is available, only partial functionality may be available.

Usage of VTune is restricted by membership to the UNIX group vtune. Please contact the LRZ Service Desk if you wish to make use of this software on LRZ systems, providing the user account name you wish to have enabled.

How to use VTune Amplifier

Before calling the tool either via the command line interface (command amplxe-cl) or the GUI (command amplxe-gui), please type the following command:

module load amplifier_xe

The GUI allows you to build analysis projects, specify an executable as well as various parameters for execution and analysis modes. In particular, profiling of threaded programs (including scalability analysis and identification of parallelization-induced performance problems) is supported. Please consult the documentation referenced below for a description of the many options this tool offers.

Documentation and Resources

The documentation for VTune Amplifier is available on the systems via the environment variable $AMPLIFIER_XE_DOC. Also, manual pages for the commands can be consulted.

Furthermore, if you encounter difficulties with the LRZ-specific installations, please contact the LRZ Service Desk for help.