Comparative Performance Analysis of Directed Flow Control for Real-Time SCI

Abstract

The distributed nature of routing and flow control in a register-insertion ring topology complicates priority enforcement for real-time systems. Two divergent approaches for priority enforcement for ring-based networks are reviewed: a node-oriented scheme called Preemptive Priority Queue and a ring-wide arbitration approach dubbed TRAIN. This paper introduces a hybrid protocol named Directed Flow Control that combines node- and ring-oriented flow control to yield greater performance. A functional comparison of the three protocols as implemented on the Scalable Coherent Interface (SCI) is presented, followed by performance results obtained through high-fidelity modeling and simulation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADA466405

Entities

People

  • Alan D. George
  • Matthew C. Chidester
  • Robert W. Todd

Organizations

  • University of Florida

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Arbitration
  • Bandwidth
  • Case Studies
  • Computers
  • Cycles
  • Data Transmission
  • Engineering
  • Flow
  • High Performance Computing
  • Hot Spots
  • Hypervelocity Flow
  • Inversion
  • Load Distribution
  • Network Topology
  • Ring Networks
  • Simulations
  • Simulators

Fields of Study

  • Computer science

Readers

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