Revision as of 14:06, 12 April 2017

Application Details

• Description: Likwid is a simple to install and use tool suite of command line applications for performance oriented programmers
• Version: 4.0.1
• Modules: likwid/4.0.1
• Licence: Open source (Github)

Usage Examples

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.

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

[username@login01 ~]$ module load likwid/4.0.1

• If you want to use the Marker API with Java, you can find the Java module here: https://github.com/jlewandowski/likwid-java-api
• For Python you can find an interface to the LIKWID API here: https://github.com/TomTheBear/likwid-python-api

Further Information

• https://heasarc.gsfc.nasa.gov/fitsio/fitsio.html

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