Anne-Cécile Orgerie logo

Anne-Cécile Orgerie

CNRS Research Scientist

OFFICE: IRISA - F 225, Rennes

Anne-Cécile Orgerie Anne-Cécile Orgerie logo

Cours Green ICT (M2) 2018 - 2019


  • I. Introduction to (not) green ICT
    1. Energy consumption of ICT
    2. Green computing history
    3. Evolution of the energy consumption of ICT
  • II. Trails to green ICT from my research point of view
    • A. Computing side
      1. Data center level
      2. Understanding energy consumption
      3. Slowing down
      4. Switching off unused resources
      5. Exploiting virtualization capabilities
      6. Consuming renewable energy
    • B. Networking side
      1. Consumption of the Internet
      2. Optimizing hardware components
      3. Shutdown approach: put components to sleep
      4. Slowdown approach: adaptation to the needs
      5. Coordination approach: network-wide management and global solutions
      6. Wireless networks
  • III. To go a bit further
    1. ICT4Green
    2. Life Cycle Assessment
    3. Internet of many Things
  • IV. Useful Links


  • Françoise Berthoud, Eric Drezet, Laurent Lefèvre and Anne-Cécile Orgerie, “Sciences du numérique et développement durable : des liens complexes”, Interstices, June 2015,

  • Anne-Cécile Orgerie, Marcos Dias de Assunção and Laurent Lefèvre “A Survey on Techniques for Improving the Energy Efficiency of Large Scale Distributed Systems”, ACM Computing Surveys, volume 46, issue 4, pages 47:1-47:31, April 2014, online version, .

  • Anne-Cécile Orgerie, Laurent Lefèvre, and Jean-Patrick Gelas, “Demystifying Energy Consumption in Grids and Clouds”, Work in Progress in Green Computing (WIPGC) Workshop, in conjunction with the International Green Computing Conference (IGCC), Chicago, USA, pages 335-342, August 2010, online version, .

  • Mark P. Mills, “The Cloud Begins With Coal - Big Data, Big Networks, Big Infrastructure and Big Power”, research report of the Digital Power Group, August 2013,

  • Greenpeace, “How dirty is your data?”, white paper, April 2011, .

  • Jonathan Koomey, “Growth in Data Center Electricity Use 2005 to 2010”, research report, August 2011,

  • CNRS “The Big Data Revolution”, CNRS International Magazine, January 2013,

  • Marcos Dias de Assunção, Jean-Patrick Gelas, Laurent Lefèvre, and Anne-Cécile Orgerie, “The Green Grid’5000: Instrumenting a Grid with Energy Sensors”, Instrumenting the Grid (INGRID), Poznan, Poland, pages 25-42, May 2010, (proceedings published in Remote Instrumentation for eScience and Related Aspects, Springer, volume XI, pages 25-42, 2011, ISBN 978-1-4614-0507-8), online, .

  • Xiaobo Fan, Wolf-Dietrich Weber and Luiz André Barroso, “Power Provisioning for a Warehouse-sized Computer”, ACM International Symposium on Computer Architecture, June 2007, .

  • Richard Talaber, Tom Brey and Larry Lamers, “Using Virtualization to Improve Data Center Efficiency”, white paper, The Green Grid, 2009, .

  • Anne-Cécile Orgerie, “An Energy-Efficient Reservation Framework for Large-Scale Distributed Systems”, PhD thesis, 27th September 2011, Ecole Normale Supérieure de Lyon - France, .