Difference between revisions of "Seminars"
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If you need further information or want to organize a seminar, contact [mailto:gwainer@sce.carleton.ca the organizers]. | If you need further information or want to organize a seminar, contact [mailto:gwainer@sce.carleton.ca the organizers]. | ||
| − | == '''Seminar: | + | == '''Seminar: An Overview of the Existing Parallel CD++ Simulators''' == |
*'''Speaker''' | *'''Speaker''' | ||
| − | : | + | :Shafagh Jafer, ARS Laboratory, Carleton University, Canada |
*'''When''' | *'''When''' | ||
| − | :4:00 pm, | + | :4:00 pm, June 24, 2008 |
*'''Where''' | *'''Where''' | ||
| Line 16: | Line 16: | ||
*'''Abstract''' | *'''Abstract''' | ||
| − | : | + | :In this seminar, we will present new techniques for DEVS and Cell-DEVS models in parallel and distributed environments. The parallel simulators are based on the Time Warp optimistic synchronization protocol, and are developed as new simulation engines for CD++, an M&S toolkit that implements both DEVS and Cell-DEVS formalisms. |
| − | : | + | :Two distinct parallel simulators, namely Purely Optimistic PCD++ and Conservative PCD++, are introduced which use hierarchical and flattened architecture respectively. Different Cell-DEVS models are built in CD++ in order to judge the performance of these two simulators. Moreover, two new algorithms, Local Rollback Frequency Model (LRFM) and Global Rollback Frequency Model (GRFM) are implemented to control optimism of the optimistic PCD++. The LRFM and GRFM techniques are modifications to the WARPED kernel which are applied to the optimistic PCD++. A set of detailed tests are collected to investigate the effect of these approaches on the simulator. |
*'''Short Biography''' | *'''Short Biography''' | ||
| − | : | + | :Shafagh Jafer graduated with B.Eng. degree from Department of Systems and Computer Engineering of Carleton University in 2005. She received her M.A.Sc. degree in Systems and Computer Engineering from Carleton University in 2007. She is currently a Ph.D. candidate at the department of Systems and Computer Engineering at Carleton University. Her research area involves DEVS and CELL-DEVS simulations as well as Parallel CD++ Simulators. |
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Revision as of 09:20, 16 June 2008
The Advanced Real-Time Simulation Laboratory organizes varied Student Seminars (within the V-Sim Centre and the RADS Lab, SCE). The seminars will focus both on student research and technical discussion, and they are open to the community. Feel free to invite your coleagues and students to attend.
These Student Seminars are one of the main activities of the Ottawa Student Chapter of the SCS (Society for Modeling and Simulation International).
If you need further information or want to organize a seminar, contact the organizers.
Seminar: An Overview of the Existing Parallel CD++ Simulators
- Speaker
- Shafagh Jafer, ARS Laboratory, Carleton University, Canada
- When
- 4:00 pm, June 24, 2008
- Where
- 3222 VS (Campus Map here).
- Abstract
- In this seminar, we will present new techniques for DEVS and Cell-DEVS models in parallel and distributed environments. The parallel simulators are based on the Time Warp optimistic synchronization protocol, and are developed as new simulation engines for CD++, an M&S toolkit that implements both DEVS and Cell-DEVS formalisms.
- Two distinct parallel simulators, namely Purely Optimistic PCD++ and Conservative PCD++, are introduced which use hierarchical and flattened architecture respectively. Different Cell-DEVS models are built in CD++ in order to judge the performance of these two simulators. Moreover, two new algorithms, Local Rollback Frequency Model (LRFM) and Global Rollback Frequency Model (GRFM) are implemented to control optimism of the optimistic PCD++. The LRFM and GRFM techniques are modifications to the WARPED kernel which are applied to the optimistic PCD++. A set of detailed tests are collected to investigate the effect of these approaches on the simulator.
- Short Biography
- Shafagh Jafer graduated with B.Eng. degree from Department of Systems and Computer Engineering of Carleton University in 2005. She received her M.A.Sc. degree in Systems and Computer Engineering from Carleton University in 2007. She is currently a Ph.D. candidate at the department of Systems and Computer Engineering at Carleton University. Her research area involves DEVS and CELL-DEVS simulations as well as Parallel CD++ Simulators.
Seminar: Modeling and Simulation of Generalized Stochastic Discrete Event Systems
- Speaker
- Rodrigo Castro, Universidad Nacional de Rosario, Argentina
- When
- 4:00 pm, May 13, 2008
- Where
- 3222 VS (Campus Map here).
- Abstract
- The DEVS formalism is a general system theoretic based formalism that can represent all the systems whose input/output behavior can be described by sequences of events. Nevertheless, DEVS has only been defined formally for deterministic systems, which limits the stochastic treatment of the systems under study.
- In this seminar, we will introduce an extension of the classic DEVS formalism that includes stochastic features. Based on the use of Probability Spaces, the STochastic DEVS specification (STDEVS) provides a formal framework for modeling and simulation of generalized non deterministic discrete event systems. We will go through the main theoretical properties of STDEVS and illustrate its use in a stochastic oriented simulation example with the main purpose of performance analysis in computer systems and data networks.
- Short Biography
- Rodrigo Castro is a Ph.D. candidate at the Universidad Nacional de Rosario, Argentina. He is also an adjunct Lecturer at the Computer Science Department, Faculty of Sciences (FCEN), Universidad de Buenos Aires, an invited lecturer for the post-graduate course "Information Integration Technologies in the Factory" at Universidad de Buenos Aires, Argentina. Since 2000 he worked in several projects for Siemens, Cisco, Hewlett Packard, in the area of networking optimization, performance analysis, information systems infrastructure design, and software development. In 2007 he was awarded a Fundación Repsol YPF - José A. Estenssoro Ph.D. Fellowship (Argentina) for his Ph.D. studies. Also in 2007, he was awarded an INGENIO(CSIC-UPV)/OEI Grant (Spain) for studies on "Best Practices in the Cooperation University-Enterprise for Development". He is an IEEE Member of Computer Society and Communications Society.
