Sébastien Rumley

Prof. Dr. in Computer Science
Main Skills
  • Computer architecture
  • Interconnection networks
  • Distributed systems
  • Software engineering
  • Energy efficient computing
  • Green computing
  • Modeling and simulation
  • Silicon photonics
  • Integrated optics
Main technologies:
  • NodeJS + npm
  • Neo4j
  • Java + Maven
  • gitlab, gitlab-ci
  • docker
Human languages:
  • French
  • English
  • German
  • Spanish
Technical program committees (among others):
  • CCGrid 2022
  • ITEM workshop 2022
  • ISC-HPC 2017 and 2018
  • SuperComputing 2017
  • ExaComm Workshop 2015 – 2022
  • AISTECS Workshop 2016 – 2018
Regular reviewer for following journals:
  • IEEE/OSA Journal of Lightwave Technology
  • IEEE Transations on Computers
  • IEEE J. of Sel. Topics in Quantum Electronics
  • IEEE Photonics Journal
  • ACM T. on Architecture and Code Optimization


I’m a multi-facetted technologist who likes to understand, model, improve and, when the opportunity is given, design systems. For this I have my main skills in Computer Science but I’m also versed in Physics and Electrical Engineering. In my career I’ve been working on Embedded Systems, Web proxies, Smart Grid (Master thesis), Backbone communication networks (PhD thesis), Integrated optics and super-computer networks (PostDoc), and low/no-code development frameworks (Olympe.io).Even if my education is from EPFL (Msc and PhD), and so my home is Western Switzerland, I had the luck to live in Zurich (2002-2004), Santiago de Chile (2004-2005) and New York (2012-2015). I’m currently Associate Professor in the University of Applied Sciences and Arts Western Switzerland (HES-SO), Fribourg Engineering School branch (HEIA-FR), and I’m member of the iCoSys Institute. I’m teaching mostly in the areas of Software Engineering, Computer Engineering and IT infrastructure monitoring and benchmarking. Within Software Engineering, I’m teaching clean, maintainable and robust code principles, DevOps and software optimization. I’m the author of more than 80 scientific publications and I gathered more than 2000 citations (h-index: 22).

My current research interests are cloud computing deployments (Kubernetes, Hypervisors, …) monitoring and optimisation; green computing and sustainable computing ; digital twins for smart buildings.

  • PhD in Computer Science
    2006 / 2011
    EPFL – Ecole Polytechnique Fédérale de Lausanne
  • MSc in Communication Systems
    1999 / 2005
    EPFL – Ecole Polytechnique Fédérale de Lausanne
  • Associate Professor of Software Engineering
    2021 / now
  • Senior Software Engineer
    2018 / 2021
  • Research Scientist and Adjunct Lecturer
    2014 / 2018
    Lightwave Research Laboratory, Columbia University, New York
  • Postdoc
    2012 / 2014
    Lightwave Research Laboratory, Colmubia University, New York
  • Researcher and Ph.D. student
    2005 / 2011
    EPFL, Lausanne
  • Sébastien Rumley
    • Christian Gaumier (aka Cristian Bungarzeanu)
      • Pierre-Gérard Fontolliet
    • Juan Mosig
      • Freddy Gardiol
        • André S. Vander Vorst
          • Henri-Paul Debruyn
          • Vitold Belevitch
            • Charles Manneback
              • Vannebar Bush
                • Arthur Edwin Kennelly
                • Dugald Caleb Jackson
            • Wilhelm Cauer
              • Georg Karl Wilhelm Hamel
                • David Hilbert

My Erdos number is 4 :

  • Sébastien Rumley, Keren Bergman, M Ashkan Seyedi, Marco Fiorentino, “Evolving requirements and trends of HPC”

    Springer Handbook of Optical Networks, 2020

  • K. Wen, P. Samadi, S. Rumley, C. P. Chen, Y. Shen, M. Bahadori, J. Wilke, K. Bergman, “Flexfly: Enabling a Reconfigurable Dragonfly Through Silicon Photonics”

    SuperComputing 2016

  • Qixiang Cheng, Meisam Bahadori, Madeleine Glick, Sébastien Rumley, Keren Bergman, “Recent advances in optical technologies for data centers: a review”

    Optica 2018

  • Qixiang Cheng, Sébastien Rumley, Meisam Bahadori, Keren Bergman, “Photonic switching in high performance datacenters”

    Optics Express 2018

  • K. Wen, S. Rumley, P. Samadi, C. P. Chen, K. Bergman, “Silicon Photonics in Post Moore’s Law Era: Technological and Architectural Implications”

    Post-Moore’s Era Supercomputing (PMES) Workshop 2016 @ SC16

  • M. Bahadori, M. Nikdast, S. Rumley, L. Y. Dai, N. Janosik, T. Van Vaerenbergh, A. Gazman, Q. Cheng, R. Polster, K. Bergman, “Design space exploration of microring resonators in silicon photonic interconnects: impact of the ring curvature”

    IEEE Journal of Lightwave Technology, 2016

  • M. Bahadori, S. Rumley, D. Nikolova, K. Bergman, “Comprehensive Design Space Exploration of Silicon Photonic Interconnects”

    IEEE Journal of Lightwave Technology, 2015

  • S. Rumley, D. Nikolova, R. Hendry, Q. Li, D. M. Calhoun, K. Bergman, “Silicon Photonics for Exascale Systems”

    IEEE Journal of Lightwave Technology, 2014