DocumentCode :
1760572
Title :
Energy-efficient resource-provisioning algorithms for optical clouds
Author :
Buysse, Jens ; Georgakilas, K. ; Tzanakaki, Anna ; De Leenheer, Marc ; Dhoedt, Bart ; Develder, Chris
Author_Institution :
Ghent Univ., Ghent, Belgium
Volume :
5
Issue :
3
fYear :
2013
fDate :
March 1 2013
Firstpage :
226
Lastpage :
239
Abstract :
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.
Keywords :
cloud computing; optical fibre networks; quality of service; scheduling; telecommunication network routing; EE algorithm potential energy savings; IT end points; IT resources; climate change; cloud architecture; energy consumption; energy costs; energy-efficient resource-provisioning algorithms; information and communication technology; network connection routing algorithm; one-step scheduling algorithm; optical clouds; quality-of-service parameters; service blocking; single-step decision; two-step approach; wide-area optical network; Energy consumption; Optical fiber amplifiers; Optical fiber networks; Optical switches; Power demand; Routing; Servers; Cloud computing; Energy efficiency; Resource provisioning; WDM networks;
fLanguage :
English
Journal_Title :
Optical Communications and Networking, IEEE/OSA Journal of
Publisher :
ieee
ISSN :
1943-0620
Type :
jour
DOI :
10.1364/JOCN.5.000226
Filename :
6481091
Link To Document :
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