An Architectural Description of the Simplex Architecture.

Abstract

Simplex is a software architecture for dependable and evolvable process-control systems developed by the Software Engineering Institute. Our project consisted of creating a formal specification of this architecture, and analyzing its safety and liveness properties. We developed a Communicating Sequential Processes (CSP) model to describe the overall dynamic behavior of the Simplex architecture, which we verified using the Failure-Divergence-Refinement (FDR) model checker. As a result, we discovered interesting things about the use of FDR that revealed subtle points in the Simplex architecture. We also developed a WRIGHT specification of this architecture to characterize precisely the connections between its components at the architectural level, The specification was based on the latest version of the CSP model.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1996
Accession Number
ADA307890

Entities

People

  • Alejandro A. Danylyszyn
  • Charles Weinstock
  • Jose G. Rivera
  • Lui R. Sha
  • Michael J. Gagliardi

Organizations

  • Carnegie Mellon University

Tags

DTIC Thesaurus Topics

  • Application Software
  • Computer Programming
  • Computers
  • Control Systems
  • Department Of Defense
  • Engineering
  • Fault Tolerance
  • Governments
  • Homosexuality
  • Operating Systems
  • Software Design
  • Software Development
  • Specifications
  • Standards
  • United States Government
  • Universities
  • User Interface

Fields of Study

  • Computer science
  • Engineering

Readers

  • Mathematical Modeling and Probability Theory.
  • Software Engineering.