A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems

Avinash Karanth Kodi, Ahmed Louri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

As bit rates increase, optical interconnects based high-performance computing (HPC) systems improve performance by increasing the available bandwidth (using wavelength-division multiplexing (WDM) and space-division multiplexing (SDM)) and decreasing power dissipation as compared to traditional electrical interconnects. While static allocation of wavelengths (channels) in optical interconnects provide every node with equal opportunity for communication, it can lead to network congestion for non-uniform traffic patterns. In this paper, we propose an opto-electronic interconnect for designing a flexible, high-bandwidth, low-latency, dynamically reconfigurable architecture for scalable HPC systems. Re configurability is realized by monitoring traffic intensities, and implementing dynamic bandwidth re-allocation (DBR) technique that adapts to changes in communication patterns. We propose a DBR technique - Lock-Step (LS) that balances the load on each communication channel based on past utilization. Simulation results indicate that the reconfigured architecture shows 40% increased throughput and and 20% reduced network latency as compared to HPC electrical networks.

Original languageEnglish (US)
Title of host publicationProceedings - Symposium on the High Performance Interconnects, Hot Interconnects
Pages31-36
Number of pages6
DOIs
StatePublished - 2006
Event14TH IEEE Symposium on High Performance Interconnects, Hot Interconnects, HotI-14 - Stanford, CA, United States
Duration: Aug 23 2006Aug 25 2006

Other

Other14TH IEEE Symposium on High Performance Interconnects, Hot Interconnects, HotI-14
CountryUnited States
CityStanford, CA
Period8/23/068/25/06

Fingerprint

Bandwidth
Optical interconnects
Reconfigurable architectures
Communication
Wavelength division multiplexing
Multiplexing
Telecommunication traffic
Energy dissipation
Throughput
Wavelength
Monitoring

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kodi, A. K., & Louri, A. (2006). A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems. In Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects (pp. 31-36). [1690195] https://doi.org/10.1109/HOTI.2006.6

A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems. / Kodi, Avinash Karanth; Louri, Ahmed.

Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects. 2006. p. 31-36 1690195.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kodi, AK & Louri, A 2006, A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems. in Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects., 1690195, pp. 31-36, 14TH IEEE Symposium on High Performance Interconnects, Hot Interconnects, HotI-14, Stanford, CA, United States, 8/23/06. https://doi.org/10.1109/HOTI.2006.6
Kodi AK, Louri A. A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems. In Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects. 2006. p. 31-36. 1690195 https://doi.org/10.1109/HOTI.2006.6
Kodi, Avinash Karanth ; Louri, Ahmed. / A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems. Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects. 2006. pp. 31-36
@inproceedings{93e8d88f46914119a202c0fd69c8729e,
title = "A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems",
abstract = "As bit rates increase, optical interconnects based high-performance computing (HPC) systems improve performance by increasing the available bandwidth (using wavelength-division multiplexing (WDM) and space-division multiplexing (SDM)) and decreasing power dissipation as compared to traditional electrical interconnects. While static allocation of wavelengths (channels) in optical interconnects provide every node with equal opportunity for communication, it can lead to network congestion for non-uniform traffic patterns. In this paper, we propose an opto-electronic interconnect for designing a flexible, high-bandwidth, low-latency, dynamically reconfigurable architecture for scalable HPC systems. Re configurability is realized by monitoring traffic intensities, and implementing dynamic bandwidth re-allocation (DBR) technique that adapts to changes in communication patterns. We propose a DBR technique - Lock-Step (LS) that balances the load on each communication channel based on past utilization. Simulation results indicate that the reconfigured architecture shows 40{\%} increased throughput and and 20{\%} reduced network latency as compared to HPC electrical networks.",
author = "Kodi, {Avinash Karanth} and Ahmed Louri",
year = "2006",
doi = "10.1109/HOTI.2006.6",
language = "English (US)",
isbn = "0769526543",
pages = "31--36",
booktitle = "Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects",

}

TY - GEN

T1 - A new dynamic bandwidth re-allocation technique in optically interconnected high-performance computing systems

AU - Kodi, Avinash Karanth

AU - Louri, Ahmed

PY - 2006

Y1 - 2006

N2 - As bit rates increase, optical interconnects based high-performance computing (HPC) systems improve performance by increasing the available bandwidth (using wavelength-division multiplexing (WDM) and space-division multiplexing (SDM)) and decreasing power dissipation as compared to traditional electrical interconnects. While static allocation of wavelengths (channels) in optical interconnects provide every node with equal opportunity for communication, it can lead to network congestion for non-uniform traffic patterns. In this paper, we propose an opto-electronic interconnect for designing a flexible, high-bandwidth, low-latency, dynamically reconfigurable architecture for scalable HPC systems. Re configurability is realized by monitoring traffic intensities, and implementing dynamic bandwidth re-allocation (DBR) technique that adapts to changes in communication patterns. We propose a DBR technique - Lock-Step (LS) that balances the load on each communication channel based on past utilization. Simulation results indicate that the reconfigured architecture shows 40% increased throughput and and 20% reduced network latency as compared to HPC electrical networks.

AB - As bit rates increase, optical interconnects based high-performance computing (HPC) systems improve performance by increasing the available bandwidth (using wavelength-division multiplexing (WDM) and space-division multiplexing (SDM)) and decreasing power dissipation as compared to traditional electrical interconnects. While static allocation of wavelengths (channels) in optical interconnects provide every node with equal opportunity for communication, it can lead to network congestion for non-uniform traffic patterns. In this paper, we propose an opto-electronic interconnect for designing a flexible, high-bandwidth, low-latency, dynamically reconfigurable architecture for scalable HPC systems. Re configurability is realized by monitoring traffic intensities, and implementing dynamic bandwidth re-allocation (DBR) technique that adapts to changes in communication patterns. We propose a DBR technique - Lock-Step (LS) that balances the load on each communication channel based on past utilization. Simulation results indicate that the reconfigured architecture shows 40% increased throughput and and 20% reduced network latency as compared to HPC electrical networks.

UR - http://www.scopus.com/inward/record.url?scp=34547423246&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547423246&partnerID=8YFLogxK

U2 - 10.1109/HOTI.2006.6

DO - 10.1109/HOTI.2006.6

M3 - Conference contribution

SN - 0769526543

SN - 9780769526546

SP - 31

EP - 36

BT - Proceedings - Symposium on the High Performance Interconnects, Hot Interconnects

ER -