LIKWID-POWERMETER(1)

📦
version 5.5.1 · 6 versions
, in ubuntu stonking

💖 LIKWID-POWERMETER — the manual page, but make it cute 💖

okay bestie, gather round, because this is the page for likwid-powermeter — a lil tool that prints out power and clocking information on Intel CPUs. yes, power and clocking. we love a multitasker. 🦋

✨ SYNOPSIS ✨

likwid-powermeter [-vhpitf] [-V verbosity_level] [-c socket_list] [-s duration] [-M <0|1>]

that's it. that's the whole vibe. 🌸

🎀 DESCRIPTION 🎀

so likwid-powermeter is a command line application, and its whole thing is getting the Energy consumption on Intel RAPL capable processors. RAPL, iykyk. right now only Intel SandyBridge is supported — she's an icon, she's a legend, and she is the moment, but yes, just her for now 💅

it also prints out info about TDP and the Turbo Mode steps that are supported. and here's the slay: the Turbo Mode information works on all Turbo mode enabled Intel processors, not just SandyBridge. versatility, periodt. 👑

you can run this tool two ways, main character energy either way:

  • stethoscope mode — you give it a specified duration and it just vibes there measuring for that long 🩺
  • wrapper mode — you wrap it around your application and it measures your complete run, start to finish 🫶

one thing to know: RAPL works on a per package (socket) base. so like, think sockets, not individual cores, bestie.

💀 also please note: the RAPL counters are also accessible as normal events within likwid-perfctr. so if that's your thing, go off.

✨ OPTIONS ✨

every single one, no skipping, because we don't gatekeep here 💖

  • -h, --help — prints a help message to standard output, then exits. the "hey what does this do" button 🎀
  • -v, --version — prints version information to standard output, then exits. ✨
  • -V, --verbose <level> — verbose output during execution, for debugging. the levels are: 0 for only errors, 1 for informational output, 2 for detailed output and 3 for developer output. pick your level of nosiness, babe 🔍
  • -c <socket_list> — set on which socket(s) the RAPL interface is accessed. list of sockets like 0,1,2 or 0-2 are allowed. commas or ranges, both valid, we're flexible 💅
  • -M <0|1> — set how MSR registers are accessed. 0=direct, 1=accessDaemon. two doors, one choice 🚪
  • -s <duration> — set measure duration in us, ms or s. (default 2s). yes bestie, default is two whole seconds ⏱️
  • -p — prints out information about dynamic clocks and CPI information on the socket(s) measured. 📊
  • -i, --info — prints out information TDP and Turbo mode steps of all RAPL domains supporting it. the full lore dump 🧚
  • -t — prints out the temperature of all CPUs in the system. 🌡️
  • -f — prints out the temperature like -t but used Fahrenheit as temperature unit. yes, for the Americans 💀

🌈 EXAMPLE 🌈

  1. Measure the power consumption for 4 seconds on socket 1
likwid-powermeter -s 4 -c 1
  1. Use it as wrapper for an application to measure the energy for the whole execution
likwid-powermeter -c 1 ./a.out

see? ./a.out gets the full glow-up treatment. run it, measure it, obsessed. 🔥

👑 AUTHOR 👑

Written by Thomas Gruber <thomas.roehl@googlemail.com>. thank you for your service, king 🫡

🙈 BUGS 🙈

Report Bugs on <https://github.com/RRZE-HPC/likwid/issues>. found something weird? tell the internet, not me, I'm just the messenger 💜

💖 SEE ALSO 💖

go read those too, they're all in the same friend group 🦋

and that's the whole page, bestie! this was likwid-5, dated 23.12.2025, straight from the General Commands Manual — thanks for reading my little rewrite, you ate that 💅✨🎀

📦 where this page comes from