LIONS: An AWGR-Based Low-Latency Optical Switch for High-Performance Computing and Data Centers

Yin, Yawei; Proietti, Roberto; Ye, Xiaohui; Nitta, Christopher; Akella, Venkatesh; Yoo, S. J. B.

doi:10.1109/jstqe.2012.2209174

Cited by 133 publications

(12 citation statements)

References 12 publications

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“…Here, N is the number of servers and K is the number of the links between ToR and the aggregation/core tier. This scheme is inspired by the POI proposed in [4]. Each ONI has two fibers connected to the AWG input and output ports.…”

Section: Reliable Passive Optical Interconnectsmentioning

confidence: 99%

Reliable and Cost Efficient Passive Optical Interconnects for Data Centers

et al. 2015

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Section: Reliable Passive Optical Interconnectsmentioning

confidence: 99%

Reliable and Cost Efficient Passive Optical Interconnects for Data Centers

et al. 2015

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“…An AWGR switch design with (512 × 512) ports has been reported by using 512 channels with 10 GHz channel spacing [8]. AWGR-based interconnects have been proposed in recent studies [17][18][19].…”

Section: Awgrmentioning

confidence: 99%

Software-Controlled Next Generation Optical Circuit Switching for HPC and Cloud Computing Datacenters

et al. 2015

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In this paper, we consider the performance of optical circuit switching (OCS) systems designed for data center networks by using network-level simulation. Recent proposals have used OCS in data center networks but the relatively slow switching times of OCS-MEMS switches (10-100 ms) and the latencies of control planes in these approaches have limited their use to the largest data center networks with workloads that last several seconds. Herein, we extend the applicability and generality of these studies by considering dynamically changing short-lived circuits in software-controlled OCS switches, using the faster switching technologies that are now available. The modelled switch architecture features fast optical switches in a single hop topology with a centralized, software-defined optical control plane. We model different workloads with various traffic aggregation parameters to investigate the performance of such designs across usage patterns. Our results show that, with suitable choices for the OCS system parameters, delay performance comparable to that of electrical data center networks can be obtained.

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“…Leveraging various optical switch techniques, a multitude scenarios of optical data center networks (DCNs) have been proposed and numerically investigated, such as microelectro-mechanical systems (MEMSs) based WaveCube [7], semiconductor optical amplifiers (SOAs) built HiFOST and OPSquare [8,9] and LIONS based on arrayed waveguide grating (AWG) routers [10], or a combination thereof architecture deploys wavelength-selective switches (WSSs), presented in [11]. In all these aforementioned optically switched schemes, once the network is built, the optical bandwidth between any top of racks (ToRs) is fixed because the bandwidth is determined by the amounts of the pre-deployed transceivers (TRXs).…”

Section: Introductionmentioning

confidence: 99%

Automatically reconfigurable optical data center network with dynamic bandwidth allocation

Xue

Prifti

Pan

et al. 2021

J. Opt.

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The rapid increasing traffic in data centers (DCs) puts tremendous pressure to the present multi-tier network architectures and electrical switching techniques. Switching traffic in the optical domain featuring ultra-high bandwidth, therefore, has been intensively investigated to build the high capacity data center networks (DCNs). To handle the variable traffic pattern in DCs, the network reconfigurability with adaptable optical bandwidth allocation is of key importance to flexibly assign the optical bandwidth. To this end, we propose and experimentally evaluate a software-defined networking enabled reconfigurable optical DCN with dynamic bandwidth allocation in this work, based on novel optical top of racks exploiting a wavelength selective switch. Experimental assessments show that the proposed solution can automatically reallocate the optical bandwidth in real-time to adapt the dynamic traffic pattern. Compared with the conventional optical DCN with static bandwidth provision, the end-to-end latency performance of the reconfigurable scheme with adaptable bandwidth allocation improves of 58.3% and the average packet loss decreases one order of magnitude. Moreover, the reconfigurable optical DCN features deterministic latency performance, with much lower time variations of packets delivery completion. Based on the experimental parameters, the simulation platform is also built to validate the good scalability of the proposed reconfigurable DCN. Numerical results illustrate the negligible performance degradation (11%) as the network scales from 2560 to 40 960 servers.

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LIONS: An AWGR-Based Low-Latency Optical Switch for High-Performance Computing and Data Centers

Cited by 133 publications

References 12 publications

Reliable and Cost Efficient Passive Optical Interconnects for Data Centers

Reliable and Cost Efficient Passive Optical Interconnects for Data Centers

Software-Controlled Next Generation Optical Circuit Switching for HPC and Cloud Computing Datacenters

Automatically reconfigurable optical data center network with dynamic bandwidth allocation

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