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A design approach for ultrareliable real-time systemsA design approach developed over the past few years to formalize redundancy management and validation is described. Redundant elements are partitioned into individual fault-containment regions (FCRs). An FCR is a collection of components that operates correctly regardless of any arbitrary logical or electrical fault outside the region. Conversely, a fault in an FCR cannot cause hardware outside the region to fail. The outputs of all channels are required to agree bit-for-bit under no-fault conditions (exact bitwise consensus). Synchronization, input agreement, and input validity conditions are discussed. The Advanced Information Processing System (AIPS), which is a fault-tolerant distributed architecture based on this approach, is described. A brief overview of recent applications of these systems and current research is presented.
Document ID
19910053253
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lala, Jaynarayan H. (Draper (Charles Stark) Lab., Inc. Cambridge, MA, United States)
Harper, Richard E. (Draper (Charles Stark) Lab., Inc. Cambridge, MA, United States)
Alger, Linda S. (Charles Stark Draper Laboratory, Inc. Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1991
Publication Information
Publication: Computer
Volume: 24
ISSN: 0018-9162
Subject Category
COMPUTER SYSTEMS
Funding Number(s)
CONTRACT_GRANT: NAS1-18565
Distribution Limits
Public
Copyright
Other