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Wilkes Award 2017

The paper Energy Efficient Content Distribution [1] won the Wilkes Award 2017 (The Wilkes Award is given once a year to the authors of the best paper published in the volume of The Computer Journal from the previous year)

Congratulation to the authors!

  • J. Araujo, F. Giroire, J. Moulierac, Y. Liu, and R. Modrzejewski, “Energy Efficient Content Distribution,” The Computer Journal, vol. 59, iss. 2, pp. 192-207, 2016. doi:10.1093/comjnl/bxv095
    [BibTeX] [Abstract] [Download PDF]

    In order to optimize energy efficiency, network operators try to switch off as many network devices as possible. Recently, there is a trend to introduce content caches as an inherent capacity of network equipment, with the objective of improving the efficiency of content distribution and reducing the network congestion. In this work, we study the impact of using in-network caches and content delivery network (CDN) cooperation on an energy-efficient routing. We formulate this problem as Energy Efficient Content Distribution, we propose an integer linear program (ILP) and a heuristic algorithm to solve it. The objective of this problem is to find a feasible routing, so that the total energy consumption of the network is minimized while the constraints given by the demands and the link capacity are satisfied. We exhibit for which the range of parameters (size of caches, popularity of content, demand intensity, etc.) it is useful to use caches. Experimental results show that by placing a cache on each backbone router to store the most popular content, along with well choosing the best content provider server for each demand to a CDN, we can save about 20\% of power in average of all the backbone networks considered.

    @article{araujo:hal-01238051,
    TITLE = {{Energy Efficient Content Distribution}},
    AUTHOR = {Araujo, Julio and Giroire, Fr{\'e}d{\'e}ric and Moulierac, Joanna and Liu, Yi and Modrzejewski, Remigiusz},
    URL = {https://hal.inria.fr/hal-01238051},
    JOURNAL = {{The Computer Journal}},
    PUBLISHER = {{Oxford University Press (UK)}},
    VOLUME = {59},
    NUMBER = {2},
    PAGES = {192--207},
    YEAR = {2016},
    MONTH = Nov,
    DOI = {10.1093/comjnl/bxv095},
    ABSTRACT = {In order to optimize energy efficiency, network operators try to switch off as many network devices as possible. Recently, there is a trend to introduce content caches as an inherent capacity of network equipment, with the objective of improving the efficiency of content distribution and reducing the network congestion. In this work, we study the impact of using in-network caches and content delivery network (CDN) cooperation on an energy-efficient routing. We formulate this problem as Energy Efficient Content Distribution, we propose an integer linear program (ILP) and a heuristic algorithm to solve it. The objective of this problem is to find a feasible routing, so that the total energy consumption of the network is minimized while the constraints given by the demands and the link capacity are satisfied. We exhibit for which the range of parameters (size of caches, popularity of content, demand intensity, etc.) it is useful to use caches. Experimental results show that by placing a cache on each backbone router to store the most popular content, along with well choosing the best content provider server for each demand to a CDN, we can save about 20\% of power in average of all the backbone networks considered.},
    KEYWORDS = {Future Internet ; In-network Caching ; Content Deliv-ery Network ; Integer Linear Programming ; Energy Efficiency},
    PDF = {https://hal.inria.fr/hal-01238051/file/compj.pdf},
    HAL_ID = {hal-01238051},
    HAL_VERSION = {v1},
    }