NDLI: Lightweight Time Warp– A Novel Protocol for Parallel Optimistic Simulation of Large-Scale DEVS and Cell-DEVS Models

Content Provider	IEEE Xplore Digital Library
Author	Qi Liu Wainer, G.
Copyright Year	2008
Description	Author affiliation: Dept. of Syst. & Comput. Eng., Carleton Univ. Centre on Visualization & Simulation, Ottawa, ON (Qi Liu; Wainer, G.)
Abstract	This paper proposes a novel lightweight time warp (LTW) protocol for high-performance parallel optimistic simulation of large-scale DEVS and cell-DEVS models. By exploiting the characteristics of the simulation process, the protocol is able to set free most logical processes (LPs) from the time warp mechanism, while the overall simulation still executes optimistically, driven by only a few full-fledged time warp LPs. The LTW protocol includes a rule-based event-scheduling mechanism using two types of event queues, an aggregated state-saving technique for optimal risk-free state management, and a new rollback algorithm that recovers lightweight LPs from causality errors without sending anti-messages. The impact on global control mechanisms such as GVT computation, fossil collection, and load migration is also discussed. The basic concepts of the protocol could also apply to a broad range of time warp systems under certain conditions and with appropriate control over the LPs.
Starting Page	131
Ending Page	138
File Size	914881
Page Count	8
File Format	PDF
ISBN	9780769534251
ISSN	15506525
DOI	10.1109/DS-RT.2008.15
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols Time warp simulation Large-scale systems Computational modeling Discrete event simulation Computer simulation Atherosclerosis Kernel Discrete event systems Load management Cell-DEVS models parallel simulation optimistic synchronization Time Warp DEVS models
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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