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This is the command likwid-perfscope that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



likwid-perfscope - Frontend for the timeline mode of likwid-perfctr(1) that on-the-fly
generates pictures from the measurements


likwid-perfscope [-h] [-cores <cpu_list>] [-freq <frequency>] [-group <eventset>]


likwid-perfscope is a command line application written in Perl that uses the timeline
daemon mode of likwid-perfctr(1) to create on-the-fly pictures with the current
measurements. It uses the feedGnuplot(1) script to send the current data to gnuplot.


-h prints a help message to standard output, then exits.

-cores <cpu_list>
measures the given group on given CPUs in <cpu_list>

-freq <frequency>
reads the current performance values every <frequency>. Available suffixes are 's'
and 'ms', e.g. 500ms. Default value is 1s

-group <eventset>
defines the events and counters that should be read. Possible values can be
gathered from likwid-perfctr(1). Default is group 'FLOPS_DP'


1. Monitor double precision floating-point operations:

likwid-perfscope -group FLOPS_DP -cores 0-3 -freq 500ms

Executes likwid-perfctr on the first four cores. The values are read every 500ms are
forwarded to gnuplot using the feedGnuplot script.

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