The Emerging Optical Data Center

Vahdat, Amin; Liu, Hong; Zhao, Xiaoxue; Johnson, Chris

doi:10.1364/ofc.2011.otuh2

Cited by 93 publications

(37 citation statements)

References 6 publications

(9 reference statements)

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“…PCIe switch (Gen 3) can achieve latency on the order of 150 ns while low latency Top-of-Rack IP switch and Infiniband switch can achieve 800 ns latency or less. As a result, silicon photonics and optical circuit switches (OCS) are likely to be the only options to enable composable memory beyond a rack [34][35][36]. Large caches can reduce the impact of remote access.…”

Section: Software Stackmentioning

confidence: 99%

Composable architecture for rack scale big data computing

Franke

Parris

et al. 2017

Future Generation Computer Systems

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Keywords:Big data platforms, Composable system architecture, Disaggregated datacenter architecture, composable datacenter, software defined environments, software defined networking. Abstract:The rapid growth of cloud computing, both in terms of the spectrum and volume of cloud workloads, necessitate re-visiting the traditional rack-mountable servers based datacenter design. Next generation datacenters need to offer enhanced support for: (i) fast changing system configuration requirements due to workload constraints, (ii) timely adoption of emerging hardware technologies, and (iii) maximal sharing of systems and subsystems in order to lower costs. Disaggregated datacenters, constructed as a collection of individual resources such as CPU, memory, disks etc., and composed into workload execution units on demand, are an interesting new trend that can address the above challenges. In this paper, we demonstrated the feasibility of composable systems through building a rack scale composable system prototype using PCIe switch. Through empirical approaches, we develop assessment of the opportunities and challenges for leveraging the composable architecture for rack scale cloud datacenters with a focus on big data and NoSQL workloads. In particular, we compare and contrast the programming models that can be used to access the composable resources, and developed the implications for the network and resource provisioning and management for rack scale architecture.

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Section: Software Stackmentioning

confidence: 99%

Composable architecture for rack scale big data computing

Franke

Parris

et al. 2017

Future Generation Computer Systems

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“…However, according to empirical studies of DC traffic, it has been shown that 80% of the flows are mice flows (smaller than 10 KB in size) and 95% of the bytes transferred in a DC are in the top 10% of the elephant flows (flows with large amount of data) [9]- [11], [104]. Thus, full bisection bandwidth between more than a few pairs of servers at any instant is rarely required in a DCN [35], [39], [103], [105].…”

Section: Proposed Classification Of Dcn Architecturesmentioning

confidence: 99%

“…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]. Existing hybrid wired DCNs (e.g., c-Through and Helios) employ Electrical Packet Switching (EPS) and Optical Circuit Switching (OCS) technologies, respectively, for supporting bursty and long duration large flows in DCNs [34], [35], [39], [40], [107].…”

Section: Proposed Classification Of Dcn Architecturesmentioning

confidence: 99%

Wireless Communication in Data Centers: A Survey

Hamza

Deogun

Alexander

2016

IEEE Commun. Surv. Tutorials

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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“…Albeit great part of the traffic will continue to flow between end-users and such computer centers, an increasing fraction is flowing within the DPCs themselves [2,3]. This situation has triggered a worldwide investment to upgrade the existing facilities or building new ones in order to cope with the growing bandwidth demand that has been estimated to reach $35BN in 2012 [4].…”

Section: Introductionmentioning

confidence: 99%