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)