Real-Time Fault Tolerant Computer Systems

reportActive / Technical Report | Accession Number: ADA272909 | Open PDF

Abstract:

This project is designed to study a new approach to software fault tolerance called analytic redundancy. It has been widely acknowledged that software failures are the most important issue in large computer system reliability. The failure rate of software has risen to 9.4 times the failure rate of hardware, and software failures have captured substantial media attention in recent years. The problem of software reliability is especially difficult, because the major recognized approaches recovery blocks and n- version programming are known to have serious drawbacks, and do not protect against whole classes of errors such as specification or design errors.

Author(s):
Lehoczky, John P. ; Sha, Lui ; Bodson, Marc ; Rajkumar, Ragunathan
Author Organization(s):
CARNEGIE-MELLON UNIV PITTSBURGH PA
Descriptive Note:
Annual rept 1 Oct 92-30 Sep 93,
Supplementary Note:
DOI: 10.21236/ADA272909
Pagination:
0009

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
N00014-92-J-1524
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating; JCA_5_Command and Control; JCA_1.2.7_Experimentation; JCA_6.1.3_Switching and Routing; JCA_5.3_Planning; JCA_6.1_Information Transport; JCA_6_Net Centric
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*REAL TIME, *REDUNDANCY, *COMPUTER PROGRAM RELIABILITY, *FAULT TOLERANT COMPUTING, ALGORITHMS, SYSTEMS APPROACH, FAILURE(ELECTRONICS)
Field(s)/Group(s):
Computer Programming and Software
Keyword(s):
*ANALYTICAL REDUNDANCY
Report Date:
1993 Sep 30