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Title: Massively parallel processor networks with optical express channels

Abstract

An optical method for separating and routing local and express channel data comprises interconnecting the nodes in a network with fiber optic cables. A single fiber optic cable carries both express channel traffic and local channel traffic, e.g., in a massively parallel processor (MPP) network. Express channel traffic is placed on, or filtered from, the fiber optic cable at a light frequency or a color different from that of the local channel traffic. The express channel traffic is thus placed on a light carrier that skips over the local intermediate nodes one-by-one by reflecting off of selective mirrors placed at each local node. The local-channel-traffic light carriers pass through the selective mirrors and are not reflected. A single fiber optic cable can thus be threaded throughout a three-dimensional matrix of nodes with the x,y,z directions of propagation encoded by the color of the respective light carriers for both local and express channel traffic. Thus frequency division multiple access is used to hierarchically separate the local and express channels to eliminate the bucket brigade latencies that would otherwise result if the express traffic had to hop between every local node to reach its ultimate destination.

Inventors:
 [1];  [2];  [3]
  1. Pleasanton, CA
  2. Tracy, CA
  3. Castro Valley, CA
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
872475
Patent Number(s):
US 5943150
Assignee:
Regents of University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
massively; parallel; processor; networks; optical; express; channels; method; separating; routing; local; channel; data; comprises; interconnecting; nodes; network; fiber; optic; cables; single; cable; carries; traffic; mpp; placed; filtered; light; frequency; color; carrier; skips; intermediate; one-by-one; reflecting; selective; mirrors; node; local-channel-traffic; carriers; pass; reflected; threaded; throughout; three-dimensional; matrix; z; directions; propagation; encoded; respective; division; multiple; access; hierarchically; separate; eliminate; bucket; brigade; latencies; otherwise; result; hop; reach; ultimate; destination; optical method; massively parallel; fiber optic; optic cable; optic cables; otherwise result; channel data; z directions; single fiber; parallel processor; express channel; dimensional matrix; parallel process; z direction; light frequency; /359/

Citation Formats

Deri, Robert J, Brooks, III, Eugene D., Haigh, Ronald E, and DeGroot, Anthony J. Massively parallel processor networks with optical express channels. United States: N. p., 1999. Web.
Deri, Robert J, Brooks, III, Eugene D., Haigh, Ronald E, & DeGroot, Anthony J. Massively parallel processor networks with optical express channels. United States.
Deri, Robert J, Brooks, III, Eugene D., Haigh, Ronald E, and DeGroot, Anthony J. 1999. "Massively parallel processor networks with optical express channels". United States. https://www.osti.gov/servlets/purl/872475.
@article{osti_872475,
title = {Massively parallel processor networks with optical express channels},
author = {Deri, Robert J and Brooks, III, Eugene D. and Haigh, Ronald E and DeGroot, Anthony J},
abstractNote = {An optical method for separating and routing local and express channel data comprises interconnecting the nodes in a network with fiber optic cables. A single fiber optic cable carries both express channel traffic and local channel traffic, e.g., in a massively parallel processor (MPP) network. Express channel traffic is placed on, or filtered from, the fiber optic cable at a light frequency or a color different from that of the local channel traffic. The express channel traffic is thus placed on a light carrier that skips over the local intermediate nodes one-by-one by reflecting off of selective mirrors placed at each local node. The local-channel-traffic light carriers pass through the selective mirrors and are not reflected. A single fiber optic cable can thus be threaded throughout a three-dimensional matrix of nodes with the x,y,z directions of propagation encoded by the color of the respective light carriers for both local and express channel traffic. Thus frequency division multiple access is used to hierarchically separate the local and express channels to eliminate the bucket brigade latencies that would otherwise result if the express traffic had to hop between every local node to reach its ultimate destination.},
doi = {},
url = {https://www.osti.gov/biblio/872475}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}

Works referenced in this record:

Express cubes: improving the performance of k-ary n-cube interconnection networks
journal, January 1991


Selective-broadcast optical passive star comer design for dense WDM networks
journal, May 1991


Star coupler based WDM switch employing tunable devices with reduced tunability range
journal, January 1992


Scalable multihop WDM passive ring with optimal wavelength assignment and adaptive wavelength routing
journal, June 1996