Accession Number:

ADA092830

Title:

A Distributed Computing Network for Real-Time Systems.

Descriptive Note:

Technical document,

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT RI

Personal Author(s):

• Morrison,Gordon E.

Report Date:

1980-11-03

Pagination or Media Count:

128.0

Abstract:

Partial interconnection, ring, and global bus topologies are examined for use in a real-time distributed computing network. Message lengths and capacity allocation strategies for network links are evaluated in determining system performance based on average message delay. The data suggest a network topology for the application under study. Processor delays at each of the nine nodes in the network are introduced in a simulation model of a global bus network. Thus, link traffic and processor delays are used with message arrival rate, network bandwidth, and processor capacity parameters to arrive at a satisfactory computer system network for a real-time application. A method is developed whereby software requirements are determined in terms of the number of instructions executed. The desired system response time is established and software and hardware specifications may then be defined.

Descriptors:

• *COMPUTER ARCHITECTURE
• COMPUTER PROGRAMS
• REAL TIME
• DISTRIBUTION
• TOPOLOGY
• COMMUNICATIONS NETWORKS
• MESSAGE PROCESSING
• DIGITAL COMPUTERS

Subject Categories:

• Computer Programming and Software
• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE