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The implementation and use of Ada on distributed systems with high reliability requirementsThe use and implementation of Ada were investigated in distributed environments in which reliability is the primary concern. In particular, the focus was on the possibility that a distributed system may be programmed entirely in Ada so that the individual tasks of the system are unconcerned with which processors are being executed, and that failures may occur in the software and underlying hardware. A secondary interest is in the performance of Ada systems and how that performance can be gauged reliably. Primary activities included: analysis of the original approach to recovery in distributed Ada programs using the Advanced Transport Operating System (ATOPS) example; review and assessment of the original approach which was found to be capable of improvement; development of a refined approach to recovery that was applied to the ATOPS example; and design and development of a performance assessment scheme for Ada programs based on a flexible user-driven benchmarking system.
Document ID
19880007942
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Knight, J. C. (Virginia Univ. Charlottesville, VA, United States)
Date Acquired
September 5, 2013
Publication Date
March 1, 1988
Subject Category
Computer Programming And Software
Report/Patent Number
NAS 1.26:182481
UVA/528213/CS88/112
NASA-CR-182481
Accession Number
88N17326
Funding Number(s)
CONTRACT_GRANT: NAG1-260
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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