HyScale: A hybrid optical network based scalable, switch-centric architecture for data centers

Saha, Shivashis; Deogun, Jitender S.; Xu, Lisong

doi:10.1109/icc.2012.6364503

Cited by 13 publications

(7 citation statements)

References 24 publications

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“…The optical link is the best medium for a shortcut with high speed bandwidth, topology configurable dynamically, and good connectivity. The network architecture with an electrical/optical hybrid switch has been investigated in numerous studies (Wang et al 2010;Farrington et al 2010;Saha et al 2012;Yu et al 2012). As a progressive innovation, optical shortcut technology has become increasingly popular in datacenter research.…”

Section: Related Workmentioning

confidence: 99%

Wormhole optical network: a new architecture to solve long diameter problem in exascale computer

et al. 2019

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The exascale computer will be built in the near future thanks to rapid innovations in semiconductor logic, memory, architectures, interconnections and other essential technologies. It is difficult to design an interconnection network that combines high performance with low power consumption. Therefore, building an interconnection network with high cost performance plays a critical role in building such a large scale system. Currently, torus-interconnected network like 6D-Torus possesses suitable properties for the petascale computer. However, the diameter within the torus-interconnected network is too long to achieve efficient global communication in the exascale computer. In addition, a direct connection method is not adaptive to the diverse characteristics of traffic. Here, we propose an architecture called Wormhole Optical Network (WON) for the exascale computer which is based on optical circuit switching. WON was designed to fully integrate into the electrical network of 6D-Torus. WON allows for the use of three novel technologies, namely the dynamic topology with optical links, algorithm of cross dimension order routing, and strategy of flow control for deadlock-free. We evaluated WON using both a prototype system and a simulator for the exascale computer. Our analysis shows that compared to the traditional electrical architecture, WON architecture reduced the time of data communication by 14-29% on exascale, a result obtained for a wide selection of diverse applications. Through enabling an SDN controller to adjust topology, WON maintains high utilization of optical links for inter-process communication from diverse applications. Further, we quantified WON's flexibility of job deployment for mitigating hotspot traffic. We show that WON reduced latency by 20-35% in the large-range deployment and improved throughput by 30% in the long-distance deployment.

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Section: Related Workmentioning

confidence: 99%

Wormhole optical network: a new architecture to solve long diameter problem in exascale computer

et al. 2019

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“…Thus, in an alternative approach fiber delay lines (FDLs) are used. In these FDLs storage is very limited due to the physical layer constraints like dispersion, crosstalk and noise [5][6][7][8]. In this work, we propose to design a switch where hybrid buffering scheme (both electrical RAMs and FDLs) will be used for the contention resolution of packets.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of hybrid optical and electronic buffer based optical packet switch

Singh

Tiwari²,

Srivastava³

2018

Sādhanā

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Optical packet switching has the potential to be used as next generation data transfer technology. This paper, introduces an Arrayed Waveguide Gratings (AWG) switch where hybrid buffer (electronic ? optical) is used for the buffering of contending packets. Power budget analysis has been carried out under various switch designs. Comparison of optical and electronic buffering is done in terms of power required for the correct operation of the switch. Energy consumption per bit is also evaluated for both optical and electronic buffers for various buffering time ranges from nano-seconds to milliseconds. In the switch analysis it has been found that, amplified switch requires five times less power, in comparison to un-amplified switch for correct operation. Energy consumption analysis reveals that for shorter duration storage, optical buffer would be a better choice.

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“…EPS already started to become a bottleneck in large scale DCNs, especially with the increasing demand for high-speed, high-bandwidth links. With the recent progress in optical technologies [108]- [110], Optical Burst Switching (OBS) has been propagated as a good candidate for burst communications in data-intensive cloud applications [4], [33], [41], [111]- [116]. The use of OBS technologies in DCNs, however, has not yet received much attention.…”

Section: Proposed Classification Of Dcn Architecturesmentioning

confidence: 99%

“…The limitations on electrical interconnects [34], [41] along with the existence of elephant flows have motivated researchers to consider Hybrid wired DCNs, where electrical and optical networks are utilized to perform inter-rack communication. In this scenario, optical networks are used to provide high-speed, on-demand, high bandwidth inter-rack communication in DCNs [35], [39], [40], [103], [105], [106].…”

Section: Proposed Classification Of Dcn Architecturesmentioning

confidence: 99%

See 1 more Smart Citation

Wireless Communication in Data Centers: A Survey

Hamza

Deogun

Alexander

2016

IEEE Commun. Surv. Tutorials

Self Cite

109

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Abstract-Data centers (DCs) is becoming increasingly an integral part of the computing infrastructures of most enterprises. Therefore, the concept of DC networks (DCNs) is receiving an increased attention in the network research community. Most DCNs deployed today can be classified as wired DCNs as copper and optical fiber cables are used for intra-and inter-rack connections in the network. Despite recent advances, wired DCNs face two inevitable problems; cabling complexity and hotspots.To address these problems, recent research works suggest the incorporation of wireless communication technology into DCNs. Wireless links can be used to either augment conventional wired DCNs, or to realize a pure wireless DCN. As the design spectrum of DCs broadens, so does the need for a clear classification to differentiate various design options. In this paper, we analyze the free space optical (FSO) communication and the 60 GHz radio frequency (RF), the two key candidate technologies for implementing wireless links in DCNs. We present a generic classification scheme that can be used to classify current and future DCNs based on the communication technology used in the network. The proposed classification is then used to review and summarize major research in this area. We also discuss open questions and future research directions in the area of wireless DCs.Index Terms-Wireless data centers, 60 GHz, free space optical (FSO), optical wireless communication (OWC), data centers, data center network.

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HyScale: A hybrid optical network based scalable, switch-centric architecture for data centers

Cited by 13 publications

References 24 publications

Wormhole optical network: a new architecture to solve long diameter problem in exascale computer

Wormhole optical network: a new architecture to solve long diameter problem in exascale computer

Design and analysis of hybrid optical and electronic buffer based optical packet switch

Wireless Communication in Data Centers: A Survey

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