Score-P perf energy consumption Counter

Compilation and Installation

Prerequisites

To compile this plugin, you need:

• C compiler

• CMake

• Score-P (or VampirTrace)

• A recent Linux kernel (2.6.31+) with activated tracing and the kernel headers

Building

1. Delete the existing build directory and create your own:

    rm -r build
    mkdir build
    cd build
   

2. Invoke CMake

   Specify the Score-P (and/or VampirTrace) directory if it is not in the default path with -DSCOREP_DIR=<PATH> (respectivly -DVT_INC=<PATH>). The plugin will use alternatively the environment variables SCOREP_DIR (and VT_DIR), e.g.

    cmake .. -DSCOREP_DIR=/PATH/TO/scorep
   

   or (for VampirTrace)

    cmake .. -DVT_DIR=/PATH/TO/vampirtrace
   

3. Invoke make

    make
   

4. Copy it to a location listed in LD_LIBRARY_PATH or add current path to LD_LIBRARY_PATH with

    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:`pwd`
   

Usage

Score-P

To use this plugin you have to add it to the SCOREP_METRIC_PLUGINS variable, e.g.:

export SCOREP_METRIC_PLUGINS=perf_plugin

Afterwards you can select the metrics you want to measure from the list of the available metrics using

export SCOREP_METRIC_PERF_PLUGIN=<metric name>

See below for a list of available metrics.

Available metrics

Name	estimation fomula
energy-thread	1.602416e-9instructions-9.779874e-11cycles+6.437730e-08*cache_misses+2.418160e+03
power-energy-cores	RAPL*scale
......	......

E.g.

export SCOREP_METRIC_PERF_PLUGIN=power-energy-cores

If anything fails

1. Check whether the plugin library can be loaded from the LD_LIBRARY_PATH.

2. If your kernel headers do not provide the file include/linux/perf_events.h please make sure you are using at least Linux 2.6.31.

3. Write a mail to the author.

• Xiaosha Xing (xiaosha.xing at tu-dresden dot de)