Contention-free on-chip routing of optical packets

Koohi, Somayyeh; Hessabi, Shaahin

doi:10.1109/nocs.2009.5071461

Cited by 22 publications

(50 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Almost all of the previously proposed hybrid architectures in [1][2][3], [5], and [6] suffer from high latency and power overheads for electrically resolving optical contentions. Therefore, an all-optical NoC can overcome the limitations of electrically-assisted ONoCs.…”

Section: Abstract-photonic; Noc; Topology; Architecturementioning

confidence: 99%

“…These extra switches increase design complexity, and add to power and area overheads. ONoC architecture proposed by Koohi et al [5] is built upon Spidergon topology. Despite constant node degree of four, network diameter of the Spidergon topology limits efficiency of large scale ONoCs.…”

Section: Abstract-photonic; Noc; Topology; Architecturementioning

confidence: 99%

“…However, almost all of the previously proposed optical routers benefit from electrically controlled resonators [1] [5]. Utilizing Optical Add/Drop (OAD) filters [10], we propose a passive optical switch which adds or drops optical wavelengths to or from the optical transmission stream without any electronic processing.…”

Section: B All-optical Router Architecturementioning

confidence: 99%

See 2 more Smart Citations

Power efficient nanophotonic on-chip network for future large scale multiprocessor architectures

Koohi

Hessabi

2011

2011 IEEE/ACM International Symposium on Nanoscale Architectures

Self Cite

View full text Add to dashboard Cite

This paper proposes new architectures for data and control planes in a nanophotonic networks-on-chip (NoC) with the key advantages of scalability to large scale networks, constant node degree, and simplicity. Moreover, we propose a minimal deterministic routing algorithm for the data network which leads to small and simple photonic switches. Built upon the proposed novel topology, we present a scalable all-optical NoC, referred to as 2D-HERT, which offers passive routing of optical data streams based on their wavelengths. Utilizing wavelength routing method, Wavelength Division Multiplexing (WDM) technique, and a new all-optical control architecture, our proposed optical NoC eliminates the need for optical resource reservation at the intermediate nodes and the corresponding latency and area overheads. We compare performance of the proposed architecture against electrical NoCs and alternative all-optical architectures under various synthetic traffic patterns. Averaging through different traffic patterns, 2D-HERT architecture reduces data transmission delay by 18%, 4%, and 70% and achieves average per-packet power reduction of 53%, 45%, and 95% over optical crossbar, -router, and electrical Torus, respectively. *

show abstract

Section: Abstract-photonic; Noc; Topology; Architecturementioning

confidence: 99%

Section: Abstract-photonic; Noc; Topology; Architecturementioning

confidence: 99%

See 1 more Smart Citation

Power efficient nanophotonic on-chip network for future large scale multiprocessor architectures

Koohi

Hessabi

2011

2011 IEEE/ACM International Symposium on Nanoscale Architectures

Self Cite

View full text Add to dashboard Cite

show abstract

“…• Hybrid NoCs suffer from high power consumption of either electronic path setup networks [6], [7], [11] or local communication using electronic interconnects [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

A Fully Optical Ring Network-on-Chip with Static and Dynamic Wavelength Allocation

Cisse

Koibuchi

Yoshimi

et al. 2013

IEICE Trans. Inf. & Syst.

View full text Add to dashboard Cite

SUMMARYSilicon photonics Network-on-Chips (NoCs) have emerged as an attractive solution to alleviate the high power consumption of traditional electronic interconnects. In this paper, we propose a fully optical ring NoC that combines static and dynamic wavelength allocation communication mechanisms. A different wavelength-channel is statically allocated to each destination node for light weight communication. Contention of simultaneous communication requests from multiple source nodes to the destination is solved by a token based arbitration for the particular wavelength-channel. For heavy load communication, a multiwavelength-channel is available by requesting it in execution time from source node to a special node that manages dynamic allocation of the shared multiwavelength-channel among all nodes. We combine these static and dynamic communication mechanisms in a same network that introduces selection techniques based on message size and congestion information. Using a photonic NoC simulator based on Phoenixsim, we evaluate our architecture under uniform random, neighbor, and hotspot traffic patterns. Simulation results show that our proposed fully optical ring NoC presents a good performance by utilizing adequate static and dynamic channels based on the selection techniques. We also show that our architecture can reduce by more than half, the energy consumption necessary for arbitration compared to hybrid photonic ring and mesh NoCs. A comparison with several previous works in term of architecture hardware cost shows that our architecture can be an attractive cost-performance efficient interconnection infrastructure for future SoCs and CMPs. key words: Network-on-Chip, high-bandwidth and low power network, optical interconnect, wavelength allocation

show abstract

“…Using novel components, such as silicon microring resonators [6], which can now be integrated onchip, it is possible to build switching optical interconnection networks such as proposed by Shacham [7] or Koohi [8].…”

Section: Introductionmentioning

confidence: 99%

Low-Power Reconfigurable Network Architecture for On-Chip Photonic Interconnects

Artundo

Heirman

Loperena

et al. 2009

2009 17th IEEE Symposium on High Performance Interconnects

View full text Add to dashboard Cite

Abstract-Photonic Networks-On-Chip have emerged as a viable solution for interconnecting multicore computer architectures in a power-efficient manner. Current architectures focus on large messages, however, which are not compatible with the coherence traffic found on chip multiprocessor networks. In this paper, we introduce a reconfigurable optical interconnect in which the topology is adapted automatically to the evolving traffic situation. This allows a large fraction of the (short) coherence messages to use the optical links, making our technique a better match for CMP networks when compared to existing solutions. We also evaluate the performance and power efficiency of our architecture using an assumed physical implementation based on ultra-low power optical switching devices and under realistic traffic load conditions.

show abstract

Contention-free on-chip routing of optical packets

Cited by 22 publications

References 22 publications

Power efficient nanophotonic on-chip network for future large scale multiprocessor architectures

Power efficient nanophotonic on-chip network for future large scale multiprocessor architectures

A Fully Optical Ring Network-on-Chip with Static and Dynamic Wavelength Allocation

Low-Power Reconfigurable Network Architecture for On-Chip Photonic Interconnects

Contact Info

Product

Resources

About