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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 3 — Mar. 1, 2013
  • pp: 226–239

Energy-Efficient Resource-Provisioning Algorithms for Optical Clouds

Jens Buysse, Konstantinos Georgakilas, Anna Tzanakaki, Marc De Leenheer, Bart Dhoedt, and Chris Develder  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 5, Issue 3, pp. 226-239 (2013)

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Rising energy costs and climate change have led to an increased concern for energy efficiency (EE). As information and communication technology is responsible for about 4% of total energy consumption worldwide, it is essential to devise policies aimed at reducing it. In this paper, we propose a routing and scheduling algorithm for a cloud architecture that targets minimal total energy consumption by enabling switching off unused network and/or information technology (IT) resources, exploiting the cloud-specific anycast principle. A detailed energy model for the entire cloud infrastructure comprising a wide-area optical network and IT resources is provided. This model is used to make a single-step decision on which IT end points to use for a given request, including the routing of the network connection toward these end points. Our simulations quantitatively assess the EE algorithm’s potential energy savings but also assess the influence this may have on traditional quality-of-service parameters such as service blocking. Furthermore, we compare the one-step scheduling with traditional scheduling and routing schemes, which calculate the resource provisioning in a two-step approach (selecting first the destination IT end point and subsequently using unicast routing toward it). We show that depending on the offered infrastructure load, our proposed one-step calculation considerably lowers the total energy consumption (reduction up to 50%) compared to the traditional iterative scheduling and routing, especially in low- to medium-load scenarios, without any significant increase in the service blocking.

© 2013 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4251) Fiber optics and optical communications : Networks, assignment and routing algorithms

ToC Category:
Research Papers

Original Manuscript: August 7, 2012
Revised Manuscript: December 10, 2012
Manuscript Accepted: January 1, 2013
Published: February 28, 2013

Jens Buysse, Konstantinos Georgakilas, Anna Tzanakaki, Marc De Leenheer, Bart Dhoedt, and Chris Develder, "Energy-Efficient Resource-Provisioning Algorithms for Optical Clouds," J. Opt. Commun. Netw. 5, 226-239 (2013)

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