Hi-LION: Hierarchical large-scale interconnection optical network with AWGRs [invited]

Author

Zheng Cao ; Proietti, Roberto ; Yoo, S.J.B.

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of California, Davis, Davis, CA, USA

Volume

7

Issue

1

fYear

2015

fDate

Jan. 2015

Abstract

This paper proposes Hi-LION, a hierarchical large-scale interconnect optical network, exploiting high-radix arrayed waveguide grating routers (AWGRs) in hierarchy to achieve very large scale and low latency interconnection of many computing nodes. By using the unique wavelength routing property of AWGRs together with electrical switching inside the processors, Hi-LION can scale beyond 100,000 nodes. A comparison with a legacy fat-tree network with a 3:1 oversubscription ratio shows that Hi-LION can achieve 2.5-fold throughput increases while using less than 20% of the global switches and cables.

Keywords

arrayed waveguide gratings; integrated circuit interconnections; integrated optoelectronics; large scale integration; microprocessor chips; network routing; optical interconnections; AWGR; Hi-LION; arrayed waveguide grating routers; computing nodes; electrical switching; hierarchical large-scale interconnection optical network; legacy fat-tree network; wavelength routing property; Computer architecture; Optical fiber networks; Optical switches; Ports (Computers); Routing; Scalability; Topology; Arrayed waveguide grating router; Data centers; Optical interconnects; Wavelength division multiplexing; Wavelength routing;

fLanguage

English

Journal_Title

Optical Communications and Networking, IEEE/OSA Journal of

Publisher

ieee

ISSN

1943-0620

Type

jour

DOI

10.1364/JOCN.7.000A97

Filename

7023479