TCP Performance over ACTS

Abstract

Coupled atmospheric and hydrodynamic forecast models were executed on supercomputing resources of the National Center for Atmospheric Research (NCAR) in Boulder, Colorado and the Ohio Supercomputing Center (OSC) in Columbus, Ohio respectively. The interoperation of these two models on distributed, high performance computing platforms required the transfer of large three dimensional data sets at very high in formation rates. High capacity terrestrial fiber optic transmission system technologies were integrated with those of NASA's Advanced Communications Technology Satellite (ACTS) in Geosynchronous Earth Orbit (GEO) to test integration of the two systems. Operation over such a spacecraft required the modification of standard data communications protocol configurations to facilitate their ability to perform efficiently over the hybrid network. Protocol performance tuning enabled this architecture to facilitate high data rate communications between end-systems not readily accessible to high performance terrestrial fiber optic transmission systems. Obviating the performance degradation often found in contemporary earth/satellite hybrids.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1995
Accession Number
ADA353855

Entities

People

  • C. E. Fair

Organizations

  • National Center for Atmospheric Research

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Bandwidth
  • Computer Networks
  • Computer Programs
  • Computing System Architectures
  • Data Rate
  • Digital Communications
  • Internet
  • Network Architecture
  • Network Protocols
  • Network Topology
  • Networks
  • Operating Systems
  • Stations
  • Throughput
  • Transport Protocols
  • Work Stations

Readers

  • Computational Fluid Dynamics (CFD)
  • Computer Networking
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space
  • Space - Satellites