Accession Number : ADA317977

Title :   Distributed Computing Over New Technology Networks: Quality of Service for CORBA Objects.

Descriptive Note : Final rept. Jul 94-May 96,

Corporate Author : BBN SYSTEMS AND TECHNOLOGIES CORP CAMBRIDGE MA

Personal Author(s) : Bakken, David E. ; Schantz, Richard E. ; Zinky, John

PDF Url : ADA317977

Report Date : OCT 1996

Pagination or Media Count : 48

Abstract : This project investigated how 'middleware' can be extended to allow distributed programs to exploit recent and anticipated advances in networking technology. This was accomplished in four (largely sequential) steps: (1) Study the impact of new technology networks on distributed computing environments, which lead to the conclusion that Quality of Service (QoS) was the most promising attribute of new networking technologies in terms of improving distributed programs such as C3 or collaborative planning applications; (2) Study how Distributed Computing Environments (DCEs) should support QoS in WAN environments; (3) Architecting a QoS Framework for CORBA; and (4) Experimentation. This report describes an architecture for Quality of Service for CORBA Objects (QuO), which was developed to overcome performance limitations encountered in wide-area network environments. Distributed applications must become adaptable to cope with system properties which vary greatly over time, if they are to be acceptable for mission critical use and cost effectively evolve. QuO develops a cohesive framework for constructing adaptable applications by introducing the concepts of quality of service for object access, and by providing the mechanisms which can be used to integrate these concepts into emerging applications.

Descriptors :   *COMPUTATIONS, *DISTRIBUTED DATA PROCESSING, *COMPUTER ARCHITECTURE, *WIDE AREA NETWORKS, ENVIRONMENTS, COSTS, QUALITY, LIMITATIONS, ACCESS, AREA COVERAGE.

Subject Categories : Computer Programming and Software
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE