FireFly

Hamedazimi, Navid; Qazi, Zafar Ayyub; Gupta, Himanshu; Sekar, Vyas; Das, Samir R.; Longtin, Jon P.; Shah, Himanshu; Tanwer, Ashish

doi:10.1145/2740070.2626328

Cited by 86 publications

(11 citation statements)

References 27 publications

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“…In our previous work [7], a simple prototype FSO terminal with the goal of achieving 360 • -steerable communication for HPC use has been developed. It keeps a 1.6-mm positioning error at a 30-m distance, which is well within the 6-mm tolerance of an FSO link [14]. Furthermore, an experiment using Arimoto's devices [17] has confirmed that the optical power loss over a 30-m indoor FSO link is well within SFP/XFP/QSFP standards.…”

Section: Behaviorsupporting

confidence: 60%

“…Free Space Optics (FSO) is utilized for high-bandwidth high-frequency wireless communication (e.g., several hundreds THz band for carrier signal) [7], [14]. FSO communication systems have been designed and deployed for home networks, indoor networks, inter-building links, links between two mobile vehicles, and long-distance data transfers such as high-bandwidth satellite communication.…”

Section: Free Space Optics (Fso)mentioning

confidence: 99%

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Enhancing Job Scheduling on Inter-Rackscale Datacenters with Free-Space Optical Links

Koibuchi

2018

IEICE Trans. Inf. & Syst.

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Datacenter growth in traffic and scale is driving innovations in constructing tightly-coupled facilities with low-latency communication for different specific applications. A famous custom design is rackscale (RS) computing by gathering key server resource components into different resource pools. Such a resource-pooling implementation requires a new software stack to manage resource discovery, resource allocation and data communication. The reconfiguration of interconnection networks on their components is potentially needed to support the above demand in RS. In this context as an evolution of the original RS architecture the inter-rackscale (IRS) architecture, which disaggregates hardware components into different racks according to their own areas, has been proposed. The heart of IRS is to use a limited number of free-space optics (FSO) channels for wireless connections between different resource racks, via which selected pairs of racks can communicate directly and thus resource-pooling requirements are met without additional software management. In this study we evaluate the influences of FSO links on IRS networks. Evaluation results show that FSO links reduce average communication hop count for user jobs, which is close to the best possible value of 2 hops and thus provides comparable benchmark performance to that of the counterpart RS architecture. In addition, if four FSO terminals per rack are allowed, the CPU/SSD (GPU) interconnection latency is reduced by 25.99% over Fat-tree and by 67.14% over 2-D Torus. We also present the advantage of an FSO-equipped IRS system in average turnaround time of dispatched jobs for given sets of benchmark workloads.

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Section: Behaviorsupporting

confidence: 60%

Section: Free Space Optics (Fso)mentioning

confidence: 99%

Enhancing Job Scheduling on Inter-Rackscale Datacenters with Free-Space Optical Links

Koibuchi

2018

IEICE Trans. Inf. & Syst.

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“…In [8], Hamedazimi et al suggested a dynamic reconfigurable design for data center networks. In this work, the authors proposed a wireless network in which Free Space Optic (FSO) links are installed for inter-rack communication.…”

Section: Related Workmentioning

confidence: 99%

An Efficient Wireless Control Plane for Software Defined Networking in Data Center Networks

et al. 2019

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Software defined networking (SDN) has re-defined the way data center networks are deployed and functioned. The ability to separate the control plane and data plane have led to the simpler design and easier management. In SDN, the data plane and control plane are separately managed, so building an additional wired network to connect the control plane and the data plane can lead to a high cabling complexity. This paper proposes an end-to-end end wireless control plane architecture for SDN-enabled data center networks. In the proposed architecture, the switches form clusters that are wirelessly connected to the controller via access points (APs) and relay nodes (RNs). The switches use the 2.4/5-GHz band to connect with the APs, whereas the APs and the RNs are connected to the controller using the 60-GHz band. We have presented an analytical model to derive achievable data rates in our wireless control plane. We have also proposed two algorithms that allow an optimal number of a cluster size of the switches to be connected with the Controller via minimum number to APs/RNs such that the control traffic demands of the switches is guaranteed in interference constrained environment. Through extensive simulations, the results of our proposed architecture show that the cabling complexity in the control plane is reduced to zero and additional switches may be easily added in SDN data center. Thus, a pure wireless solution for building a control plane in a data center network is feasible.INDEX TERMS Data center networks, software-defined networks, wireless control plane.

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“…If the network interconnection could "shape-shift" in such fashion, this could considerably simplify the complicated workload placement problem. Several reconfigurable optical DCNs architectures such as ProjecToR, FireFly and OSA supporting flexible bandwidth and capacity allocation have been proposed [19,20,21]. However, the ProjecToR and FireFly based on the wireless connections have to guarantee the line-of-sight between the TRX pairs.…”

Section: Introductionmentioning

confidence: 99%

SDN enabled flexible optical data center network with dynamic bandwidth allocation based on photonic integrated wavelength selective switch

Xue¹,

Nakamura²,

Prifti³

et al. 2020

Opt. Express

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FireFly

Cited by 86 publications

References 27 publications

Enhancing Job Scheduling on Inter-Rackscale Datacenters with Free-Space Optical Links

Enhancing Job Scheduling on Inter-Rackscale Datacenters with Free-Space Optical Links

An Efficient Wireless Control Plane for Software Defined Networking in Data Center Networks

SDN enabled flexible optical data center network with dynamic bandwidth allocation based on photonic integrated wavelength selective switch

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