NDLI: A study of time warp rollback mechanisms

Content Provider	ACM Digital Library
Author	Lazowska, Edward D. Lin, Yi-Bing
Copyright Year	1991
Abstract	The Time Warp “optimistic” approach is one of the most important parallel simulation protocols. Time Warp synchronizes processes via $\textit{rollback}.$ The original rollback mechanism called lazy cancellation has aroused great interest. This paper studies these rollback mechanisms. The general tradeoffs between aggressive and lazy cancellation are discussed, and by a conservitive-optimal simulation is defined for comparitive purposes. Within the framework of aggressive cancellation, we offer some observations and analyze the rollback behavior of tandom systems. The lazy cancellation mechanism iss examined using a metric called the sensitivity of output message. Both aggressive and lazy cancellation are shown to work well for a process with a small simulated load intensity. Finally, an analytical model is given to analyze message preemtion, an important factor that affects the performance of rollback mechanisms. Results indicate that message preemtion has a significant effect on performance when (1) the processor is highly utilized, (2) the execution times of messages have high varience, and (3) rollbacks occur frequently.
Starting Page	51
Ending Page	72
Page Count	22
File Format	PDF
ISSN	10493301
e-ISSN	15581195
DOI	10.1145/102810.102813
Volume Number	1
Issue Number	1
Journal	ACM Transactions on Modeling and Computer Simulation (TOMACS)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1991-01-03
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Time Warp approach Aggressive cancellation Discrete-event simulation Lazy cancellation Parallel simulation
Content Type	Text
Resource Type	Article
Subject	Computer Science Applications Modeling and Simulation

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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