Topology configuration scheme for accelerating coflows in a hyper-FleX-LION
Hao Yang, Zuqing Zhu
Abstract
To address the challenges that data center networks (DCNs) are currently facing, optical circuit switching in DCNs has been introduced and a number of architectures to improve the performance of DCNs in terms of port capacity, energy efficiency, and data transfer latency have been proposed. This led to a few all-optical interconnects (AOIs), among which Hyper-FleX-LION possesses the reconfigurability that can efficiently support various traffic patterns. In this work, we study the topology management of AOIs in Hyper-FleX-LION to efficiently schedule coflows in them so the average coflow completion time (CCT) can be minimized. We first propose time-efficient algorithms to address the provisioning of a single coflow and then extend the algorithms for multi-coflow scenarios. The simulation results demonstrate that AOIs in Hyper-FleX-LION can accelerate coflows better than the traditional AOIs based on optical cross-connects and achieve an acceleration of up to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mn>5.6</mml:mn> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mo>×</mml:mo> </mml:mrow> </mml:math> under the assumed situations. Our simulations also verify that, for coflow scheduling in Hyper-FleX-LION, our proposal can reduce the average CCT and significantly outperform benchmarks.