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dc.contributor.authorKeykhosravi, Kamran
dc.contributor.authorRastegarfar, Houman
dc.contributor.authorAgrell, Erik
dc.date.accessioned2018-05-21T17:09:41Z
dc.date.available2018-05-21T17:09:41Z
dc.date.issued2018-04
dc.identifier.citationKamran Keykhosravi, Houman Rastegarfar, and Erik Agrell, "Multicast Scheduling of Wavelength-Tunable, Multiqueue Optical Data Center Switches," J. Opt. Commun. Netw. 10, 353-364 (2018)en_US
dc.identifier.issn1943-0620
dc.identifier.issn1943-0639
dc.identifier.doi10.1364/JOCN.10.000353
dc.identifier.urihttp://hdl.handle.net/10150/627685
dc.description.abstractThe all-optical switching of multicast flows using star couplers and tunable transceivers is a promising solution for emerging cloud data center applications. However, the limited tuning range of optical components on one hand and the buffer management challenges for multicast traffic delivery on the other pose a significant impact on the performance of optical multicast scheduling algorithms. Using only one queue per input port results in head-of-line (HOL) blocking and limits the throughput, especially for bursty traffic patterns. As the number of possible multicast destinations grows exponentially with the switch size, allocating one queue per destination is not a feasible solution. To resolve HOL blocking, in this paper we consider only a handful of queues per switch input port and devise scalable scheduling algorithms that take into account transceiver tunability constraints. According to our Monte Carlo analysis of a switch with 64 ports and operating under bursty traffic, it is possible to improve the maximum achievable throughput by 44% when the number of queues per port is increased from one to eight. We show that the performance gains due to an increase in the queue count depend on the availability of the spectral resources. With the scarcity of wavelengths, an increase in the number of queues leads to diminishing returns.en_US
dc.description.sponsorshipSwedish Research Council [2014-6230]; NSF Center for Integrated Access Networks (CIAN) [EEC-0812072]en_US
dc.language.isoenen_US
dc.publisherOPTICAL SOC AMERen_US
dc.relation.urlhttps://www.osapublishing.org/abstract.cfm?URI=jocn-10-4-353en_US
dc.rights© 2018 Optical Society of America.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectData centeren_US
dc.subjectMulticast trafficen_US
dc.subjectMultiqueue switchen_US
dc.subjectOptical packet switchingen_US
dc.subjectSchedulingen_US
dc.subjectStar coupleren_US
dc.subjectTunabilityen_US
dc.titleMulticast Scheduling of Wavelength-Tunable, Multiqueue Optical Data Center Switchesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Coll Opt Scien_US
dc.identifier.journalJOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKINGen_US
dc.description.note12 month embargo; published online: 15 March 2018en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.journaltitleJournal of Optical Communications and Networking
dc.source.volume10
dc.source.issue4
dc.source.beginpage353


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