Issam Raïs

- PhD Student at ENS Lyon



address. 46 Allée d'Italie
69364 Lyon

office. 314 South

tel. +33(0) 4 26 23 84 34

mail. issam.rais[at]



I am currently a second-year PhD student at ENS Lyon, in France. I am working in the AVALON team at the LIP laboratory, and my advisors are Laurent Lefèvre, Anne Benoit and Anne-Cécile Orgerie.

Moving towards exascale implies great challenges. One of the biggest one is the energy consumption. I am interested in any problems related to energy consumption at different levels of very large scale computing facilities, specificaly High Performance Computing environments.

Here, you will find information about my work as a grad student (publications, teachings). Feel free to check out my work and if you have any questions, comments, or would like to work with me, don't hesitate to contact me.


2016 - 2017

  • Project (M1), ENS Lyon, Lyon (France)
  • Parallelism (M1), UCBL1, Lyon (France)
  • Distributed algorithms (M1), UCBL1, Lyon (France)


Journal articles


Anne Benoit, Laurent Lefèvre, Anne-Cécile Orgerie, and Issam Rais. Reducing the energy consumption of large scale computing systems through combined shutdown policies with multiple constraints. International Journal of High Performance Computing Applications, June 2017. [ bib | http | .pdf ]

International Conferences articles


Pierre-François Dutot, Yiannis Georgiou, David Glesser, Laurent Lefèvre, Millian Poquet, and Issam Rais. Towards Energy Budget Control in HPC. In 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, Madrid, Spain, May 2017. [ bib | http | .pdf ] Keywords: HPC ; Resource Management ; Scheduling ; Energy Budget


Issam Rais, Anne-Cécile Orgerie, and Martin Quinson. Impact of Shutdown Techniques for Energy-Efficient Cloud Data Centers. In International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP), Granada, Spain, December 2016. [ bib | http ]

International Workshop articles


Issam Rais, Laurent Lefèvre, Anne Benoit, and Anne-Cécile Orgerie. An Analysis of the Feasibility of Energy Harvesting with Thermoelectric Generators on Petascale and Exascale Systems. In Workshop Optimization of Energy Efficient HPC & Distributed Systems (OPTIM 2016) - The 2016 International Conference on High Performance Computing & Simulation (HPCS 2016), Proceedings of the 2016 International Conference on High Performance Computing & Simulation (HPCS 2016), Innsbruck, Austria, July 2016. [ bib | http ]
Issam Raïs