NAME

       likwid-powermeter - A tool to print power and clocking information on Intel CPUs

SYNOPSIS

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

DESCRIPTION

       likwid-powermeter  is  a  command  line  application  to get the Energy comsumption on Intel RAPL capable
       processors. Currently only Intel SandyBridge is supported. It also prints information about TDP and Turbo
       Mode  steps  supported.  The Turbo Mode information works on all Turbo mode enabled Intel processors. The
       tool can be either used in stethoscope mode for a specified duration or as a wrapper to your  application
       measuring  your  complete  run.  RAPL  works  on  a per package (socket) base.  Please note that the RAPL
       counters are also accessible as normal events within likwid-perfctr.

OPTIONS

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

       -v,--version
              prints version information to standard output, then exits.

       -V, --verbose <level>
              verbose output during execution for debugging. 0 for only errors, 1 for  informational  output,  2
              for detailed output and 3 for developer output

       -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.

       -M <0|1>
              set how MSR registers are accessed, 0=direct, 1=accessDaemon.

       -s <duration>
              set measure duration in us, ms or s. (default 2s)

       -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.

       -t     prints out the temperature of all CPUs in the system.

       -f     prints out the temperature like -t but used Fahrenheit as temperature unit.

EXAMPLE

       1. Measure the power consumption for 4 seconds on socket 1

       likwid-powermeter -s 4 -c 1

       2. Use it as wrapper for an application to measure the energy for the whole execution

       likwid-powermeter -c 1 ./a.out

AUTHOR

       Written by Thomas Gruber <thomas.roehl@googlemail.com>.

BUGS

       Report Bugs on <https://github.com/RRZE-HPC/likwid/issues>.

SEE ALSO

       likwid-topology(1), likwid-perfctr(1), likwid-pin(1)