Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

SYMNET: an optical interconnection network for scalable high-performance symmetric multiprocessors.

Ahmed Louri1, Avinash Karanth Kodi

  • 1Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85721, USA. louri@ece.arizona.edu

Applied Optics
|June 21, 2003
PubMed
Summary

We introduce SYMNET, an optical network for symmetric multiprocessors (SMPs), enhancing address bandwidth and reducing latency. This solution improves execution time by up to 66% and transaction latency by up to 78% compared to traditional bus-based systems.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

EpGAT: integrating epigenetics and 3D genome structure to predict alternative splicing and polyadenylation.

Briefings in bioinformatics·2026
Same author

Reconfigurable and adaptive photonic networks for high-performance computing systems.

Applied optics·2009
Same author

RAPID for high-performance computing systems: architecture and performance evaluation.

Applied optics·2006
See all related articles

Area of Science:

  • Computer Architecture
  • High-Performance Computing
  • Optical Networks

Background:

  • Cache-coherent symmetric multiprocessors (SMPs) face bandwidth limitations due to bus speed and coherence overhead.
  • Existing electrical bus-based SMPs broadcast single address transactions, restricting scalability and performance.

Purpose of the Study:

  • To propose a scalable optical address subnetwork, SYMNET, to overcome bandwidth limitations in future SMPs.
  • To introduce a modified cache-coherence protocol, COSYM, compatible with optical networks.

Main Methods:

  • Developed SYMNET, an optical subnetwork for pipelined and simultaneous address requests.
  • Introduced the COSYM protocol to maintain cache coherence in the optical network.
  • Evaluated SYMNET and COSYM using Splash-2 benchmarks against the electrical bus-based MOESI protocol.

Related Experiment Videos

Main Results:

  • SYMNET demonstrated a 5-66% improvement in execution time compared to MOESI.
  • COSYM protocol reduced average transaction latency by 5-78% over MOESI.
  • SYMNET shows scalability to hundreds of processors with fast snooping protocols.

Conclusions:

  • SYMNET, with the COSYM protocol, significantly enhances address bandwidth and reduces latency in SMPs.
  • Optical networks offer a viable solution for future high-performance, scalable multiprocessor systems.
  • Further advancements in optical technology promise additional performance gains.