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README.md


Introduction

Likwid is a simple to install and use toolsuite of command line applications for performance oriented programmers. It works for Intel and AMD processors on the Linux operating system.

Build Status

It consists of:

  • likwid-topology: print thread, cache and NUMA topology
  • likwid-perfctr: configure and read out hardware performance counters on Intel and AMD processors
  • likwid-powermeter: read out RAPL Energy information and get info about Turbo mode steps
  • likwid-pin: pin your threaded application (pthread, Intel and gcc OpenMP to dedicated processors)
  • likwid-bench: Micro benchmarking platform
  • likwid-features: Print and manipulate cpu features like hardware prefetchers
  • likwid-genTopoCfg: Dumps topology information to a file
  • likwid-mpirun: Wrapper to start MPI and Hybrid MPI/OpenMP applications (Supports Intel MPI, OpenMPI and MPICH)
  • likwid-perfscope: Frontend to the timeline mode of likwid-perfctr, plots live graphs of performance metrics using gnuplot
  • likwid-agent: Monitoring agent for hardware performance counters
  • likwid-memsweeper: Sweep memory of NUMA domains and evict cachelines from the last level cache
  • likwid-setFrequencies: Tool to control the CPU frequency

For further information please take a look at the Wiki.


Supported architectures

Intel

  • Intel Atom
  • Intel Pentium M
  • Intel Core2
  • Intel Nehalem
  • Intel NehalemEX
  • Intel Westmere
  • Intel WestmereEX
  • Intel Xeon Phi (KNC)
  • Intel Silvermont & Airmont
  • Intel Goldmont
  • Intel SandyBridge
  • Intel SandyBridge EP/EN
  • Intel IvyBridge
  • Intel IvyBridge EP/EN/EX
  • Intel Haswell
  • Intel Haswell EP/EN/EX
  • Intel Broadwell
  • Intel Broadwell D
  • Intel Broadwell EP
  • Intel Skylake
  • Intel Skylake SP
  • Intel Xeon Phi (KNL, KNM)
  • Intel Kabylake
  • Intel Coffeelake

AMD

  • AMD K8
  • AMD K10
  • AMD Interlagos
  • AMD Kabini
  • AMD Zen

Download, Build and Install

You can get the releases of LIKWID at: http://ftp.fau.de/pub/likwid/

For build and installation hints see INSTALL file or check the build instructions page in the wiki https://github.com/RRZE-HPC/likwid/wiki/Build

For quick install:

$ tar -xjf likwid-<VERSION>.tar.bz2
$ cd likwid-<VERSION>
$ vi config.mk (configure build, e.g. change installation prefix)
$ make
$ sudo make install (sudo required to install the access daemon with proper permissions)

Documentation

For a detailed documentation on the usage of the tools have a look at the html documentation build with doxygen. Call

make docs

or after installation, look at the man pages.

There is also a wiki at the github page: https://github.com/rrze-likwid/likwid/wiki

If you have problems or suggestions please let me know on the likwid mailing list: http://groups.google.com/group/likwid-users

or if it is bug, add an issue at: https://github.com/rrze-likwid/likwid/issues


Extras


Survey

We opened a survey at the user mailing list to get a feeling who uses LIKWID and how. Moreover we would be interested if you are missing a feature or what annoys you when using LIKWID. Link to the survey: https://groups.google.com/forum/#!topic/likwid-users/F7TDho3k7ps


Funding

LIKWID development was funded by BMBF Germany under the FEPA project, grant 01IH13009. Since 2017 the development is further funded by BMBF Germany under the SeASiTe project, grant 01IH16012A.

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