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High-performance parallel processors based on star-coupled wavelength division multiplexing optical interconnects

Patent ·
OSTI ID:874546
 [1];  [2];  [3]
  1. Pleasanton, CA
  2. Castro Valley, CA
  3. Arvada, CO
+ Show Author Affiliations

As the performance of individual elements within parallel processing systems increases, increased communication capability between distributed processor and memory elements is required. There is great interest in using fiber optics to improve interconnect communication beyond that attainable using electronic technology. Several groups have considered WDM, star-coupled optical interconnects. The invention uses a fiber optic transceiver to provide low latency, high bandwidth channels for such interconnects using a robust multimode fiber technology. Instruction-level simulation is used to quantify the bandwidth, latency, and concurrency required for such interconnects to scale to 256 nodes, each operating at 1 GFLOPS performance. Performance scales have been shown to .apprxeq.100 GFLOPS for scientific application kernels using a small number of wavelengths (8 to 32), only one wavelength received per node, and achievable optoelectronic bandwidth and latency.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
US 6411418
OSTI ID:
874546
Country of Publication:
United States
Language:
English

References (3)

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

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