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likwid
NEWS (last update 15.6.2015):
Due to the end of the Google Code service we moved LIKWID to github.
You can find us here:
https://github.com/rrze-likwid/likwid'>https://github.com/rrze-likwid/likwid
This site will not be maintained anymore. The mailing lists will stay at Google groups for now.
Likwid stands for Like I knew what I am doing. This project contributes easy to use command line tools for Linux to support programmers in developing high performance multi threaded programs.
It contains the following tools:
- likwid-topology: Show the thread and cache topology
- likwid-perfctr: Measure hardware performance counters on Intel and AMD processors
- likwid-features: Show and Toggle hardware prefetch control bits on Intel Core 2 processors
- likwid-pin: Pin your threaded application without touching your code (supports pthreads, Intel OpenMP and gcc OpenMP)
- likwid-bench: Benchmarking framework allowing rapid prototyping of threaded assembly kernels
- likwid-mpirun: Script enabling simple and flexible pinning of MPI and MPI/threaded hybrid applications
- likwid-perfscope: Frontend for likwid-perfctr timeline mode. Allows live plotting of performance metrics.
- likwid-powermeter: Tool for accessing RAPL counters and query Turbo mode steps on Intel processor.
- likwid-memsweeper: Tool to cleanup ccNUMA memory domains and force eviction of dirty cachelines from caches.
- likwid-setFrequencies: Tool to set specific processor frequencies.
Likwid stands out because:
- No kernel patching, any vanilla linux 2.6 or newer kernel works
- Transparent, always clear which events are chosen, event tags have the same naming as in documentation
- Lightweight, LIKWID tries to add no overhead and keeps out of your way.
- Easy to use, simple to build, no need to touch your code, configurable from outside. Clear CLI interface.
- Multiplatform, likwid supports Intel and AMD processors
- Up to date, likwid tries to fully support new processors as soon as possible
- Extensible, you can add functionality by means of simple text files
If you encounter problems feel free to ask questions in the http://groups.google.com/group/likwid-users'>User Mailing List.
Project Information
- License: GNU GPL v3
- 192 stars
- svn-based source control
Labels:
softwaredevelopment
hpc
multicore
multithreading
programming
performancecounters
Linux
Profiling
Performance
Tool
Numa
Developer
Benchmark