Accession Number:

ADA227852

Title:

Distributed Issues for Ada Real-Time Systems

Descriptive Note:

Final rept.

Corporate Author:

LABTEK CORP WOODBRIDGE CT

Personal Author(s):

Report Date:

1990-07-23

Pagination or Media Count:

314.0

Abstract:

This work addresses an approach to reduce the complexity of distributed systems by extending the standard Ada tasking model to handle the distributed processing and by introducing a failure model for reliability issues. It uses software developed in a previous CECOM research project, the Border Defense System BDS distributed demonstration application, that addressed the performance benefits that could be gained by the distribution of real-time Ada systems. To achieve increased performance, a new approach to improving parallel execution was studied. The approach was to create a data structure consisting of an array of tasks and distribute the elements of the array across a set of processors. Performance benefits are then achieved as a function of the available processors. A simple failure model appropriate for a class of applications which can tolerate interruptions in service for up to one second was introduced. kr

Subject Categories:

  • Computer Programming and Software
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE