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Evaluation of a Fault-Tolerance Mechanism for HLA-Based Distributed Simulations
Swedish Defence Research Agency (FOI).
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
Swedish Defence Research Agency (FOI).
2006 (English)In: 20th Workshop on Principles of Advanced and Distributed Simulation, PADS 2006: Singapore; 24 May 2006 through 26 May 2006, 2006, 175-182 p.Conference paper, Published paper (Refereed)
Abstract [en]

Successful integration of Modeling and Simulation (M&S) in the future Network-Based Defence (NBD) depends, among other things, on providing fault-tolerant (FT) distributed simulations. This paper describes a framework, named Distributed Resource Management System (DRMS), for robust execution of simulations based on the High Level Architecture. More specifically, a mechanism for FT in simulations synchronized according to the time-warp protocol is presented and evaluated. The results show that utilization of the FT mechanism, in a worst-case scenario, increases the total number of generated messages by 68% if one fault occurs. When the FT mechanism is not utilized, the same scenario shows an increase in total number of generated messages by 90%. Considering the worst-case scenario a plausible requirement on an M&S infrastructure of the NBD, the overhead caused by the FT mechanism is considered acceptable.

Place, publisher, year, edition, pages
2006. 175-182 p.
Keyword [en]
Computer architecture, Computer simulation, Distributed computer systems, Information management, Network protocols, Resource allocation, Distributed Resource Management System (DRMS), Network-Based Defence (NBD), Time-warp protocols
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-24253DOI: 10.1109/PADS.2006.18Scopus ID: 2-s2.0-33751436352ISBN: 0-7695-2587-3 (print)OAI: oai:DiVA.org:kth-24253DiVA: diva2:346035
Note
QC 20100830Available from: 2010-08-30 Created: 2010-08-30 Last updated: 2010-11-11Bibliographically approved
In thesis
1. Fault-tolerance in HLA-based distributed simulations
Open this publication in new window or tab >>Fault-tolerance in HLA-based distributed simulations
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Successful integration of simulations within the Network-Based Defence (NBD), specifically use of simulations within Command and Control (C2) environments, enforces a number of requirements. Simulations must be reliable and be able to respond in a timely manner. Otherwise the commander will have no confidence in using simulation as a tool. An important aspect of these requirements is the provision of fault-tolerant simulations in which failures are detected and resolved in a consistent manner. Given the distributed nature of many military simulations systems, services for fault-tolerance in distributed simulations are desirable. The main architecture for distributed simulations within the military domain, the High Level Architecture (HLA), does not provide support for development of fault-tolerant simulations.

A common approach for fault-tolerance in distributed systems is check-pointing. In this approach, states of the system are persistently stored through-out its operation. In case a failure occurs, the system is restored using a previously saved state. Given the abovementioned shortcomings of the HLA standard this thesis explores development of fault-tolerant mechanisms in the context of the HLA. More specifically, the design, implementation and evaluation of fault-tolerance mechanisms, based on check-pointing, are described and discussed.

Place, publisher, year, edition, pages
Stockholm: KTH, 2006. viii, 40 p.
Series
Trita-ICT-ECS AVH, ISSN 1653-6363 ; 06:03
Keyword
HLA, fault-tolerance, distributed simulations, federate, federation
National Category
Computer Engineering
Identifiers
urn:nbn:se:kth:diva-4063 (URN)
Presentation
2006-06-13, Sal D, KTH-Forum, Isafjordsgatan 39, plan 4, Kista, 14:15
Opponent
Supervisors
Note
QC 20101111Available from: 2006-06-25 Created: 2006-06-25 Last updated: 2010-11-11Bibliographically approved

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