@techreport{TR-IC-11-09,
   number = {IC-11-09},
   author  =  {Leonardo  Piga  and  Reinaldo  Bergamaschi  and Rodolfo
                   Azevedo and Sandro Rigo},
   title = {{Power Measuring Infrastructure for Computing Systems}},
   month = {March},
   year = {2011},
   institution = {Institute of Computing, University of Campinas},
   note = {In English, 18 pages.
    \par\selectlanguage{english}\textbf{Abstract}
       The  demand  for electrical energy has increased making it more
       expensive.  In  computing,  an  environment highly dependent on
       energy, it is important to develop techniques which allow power
       savings.  The evaluation of power-aware algorithms requires the
       measurement  of  actual  computer power. This report presents a
       real  power measurement framework. The framework is composed of
       a  custom  made  board,  which  is  able  to  capture the power
       consumption  and is installed into a commodity computer, a data
       acquisition  device  that  samples  the  measured values, and a
       piece  of  software that manages the framework. This work shows
       the  steps taken to develop the framework and also presents two
       examples  of  its use. The first example power profiles a small
       matrix  multiplication  program  and  discusses performance and
       energy  trade-offs.  The  second  example uses the framework to
       characterize  and  model  the power consumption of a web server
       delivering static web content.
  }
}