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Time management in a Service-Oriented Architecture for Distributed Simulation on the Grid

Time management in a Service-Oriented Architecture for Distr...

Summer computer Simulation Conference 2007, SCSC 2007, Part of the 2007 Summer Simulation Multiconference, SummerSim 2007

作者： Wang, Yong Turner, Stephen J. Cai, Wentong Chen, Xinjun Parallel and Distributed Computing Centre School of Computer Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9781622763580

A Service-Oriented Architecture is essentially a collection of independent services with well-defined interfaces that can be accessed without knowledge of their implementation. The architecture is widely used in Grid computing to achieve resource virtualization, on-demand provisioning, and service (resource) sharing. As the Grid has shown its potential as a suitable environment for simulation and modeling a Service-Oriented Architecture for Distributed Simulation on the Grid (SOAr-DSGrid) was proposed. Like other simulation systems time management is a crucial part of the whole system. It manages the logical time and guarantees that the whole simulation system is causally correct. This paper describes the implementation of distributed time management in SOAr-DSGrid. The time management makes use of the simulation topology information to reduce constraints on time advancement between simulation components. Various experiments conducted on a cluster demonstrate that a fully distributed time management system has better scalability and efficiency than the centralized version.

关键词： Grid computing

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The siso CSPI PDG standard for commercial off-the-shelf simulation package interoperability reference models 07

The siso CSPI PDG standard for commercial off-the-shelf simu...

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Simulation Winter Conference

作者： Simon J. E. Taylor Navonil Mustafee Stephen J. Turner Malcolm Y. H. Low Steffen Strassburger John Ladbrook Centre for Applied Simulation Modelling Brunel University Uxbridge Middlesex U.K. School of Economic Sciences Technical University of Ilmenau Ilmenau GERMANY Parallel and Distributed Computing Centre School of Computer Engineering Nanyang Technological University Singapore Singapore Parallel and Distributed Computing Centre Nanyang Technological University SINGAPORE Dunton Engineering Centre Basildon U.K.

ISBN: (纸本)9781424413065

For many years discrete-event simulation has been used to analyze production and logistics problems in manufacturing and defense. Commercial-off-the-shelf simulation packages (CSPs), visual interactive modelling environments such as Arena, Anylogic, Flexsim, Simul8, Witness, etc., support the development, experimentation and visualization of simulation models. There have been various attempts to create distributed simulations with these CSPs and their tools, some with the high level architecture (HLA). These are complex and it is quite difficult to assess how a set of models/CSP are actually interoperating. As the first in a series of standards aimed at standardizing how the HLA is used to support CSP distributed simulations, the Simulation Interoperability Standards Organization's (SISO) CSP Interoperability Product Development Group (CSPI PDG) has developed and standardized a set of interoperability reference models (IRM) that are intended to clearly identify the interoperability capabilities of CSP distributed simulations.

关键词： Computational modeling Standards organizations Chip scale packaging Distributed computing Discrete event simulation Production Logistics Virtual manufacturing Visualization Standards development

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Design principles and formulation for optical smart networks

Design principles and formulation for optical smart networks

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Military Communications Conference, MILCOM 2007

作者： Zhang, Tao Lu, Kejie Xiao, Gaoxi Zheng, S.-Q. School of Engineering and Computing Sciences New York Institute of Technology Old Westbury NY 11568 United States Department of Electrical and Computer Engineering University of Puerto Rico at Mayagüez Mayagüez 00681 Puerto Rico Network Technology Research Centre School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore Department of Computer Science University of Texas at Dallas Richardson TX 75083 United States

ISBN: (纸本)1424415136

Optical SMART (Scalable Multi-Access Reconfigurable Transport) network [J] is an emerging optical networking paradigm that can effectively provide connectivity based on the hypergraph theory. Similar to a conventional graph, which consists of a set of edges, a hypergraph consists of a set of hyperedges (or hyperchannels), each of which can connect two or more nodes and can support communications amongst the nodes inside the hyperchannel. To enable hyperchannel in optical SMART networks, we have designed a hybrid node architecture in our previous study [IJ. In this paper, we explore the network design principles and formulation for optical SMART networks. In particular, we formulate the static hyperchannel establishment problem as a Mixed Integer Linear Program (MILP), where the set of possible hyperchannels is given. © 2007 IEEE.

关键词： Integer programming

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Visualizing Consensus in Group Decision Making Situations

Visualizing Consensus in Group Decision Making Situations

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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： S. Alonso E. Herrera-Viedma F.J. Cabrerizo F. Chiclana F. Herrera Software Engineering Department University of Granada Spain Computer Science and Artificial Intelligence Department University of Granada Spain Centre for Computational Intelligence School of Computing De Montfort University Leicester UK

In the resolution of group decision making problems the consensus process, that is, the process where experts discuss about the alternatives to narrow their differences, is usually held with all the experts gathered together in a place where they can speak and discuss about the alternatives in the problem. However, in situations where it is not possible to bring them all together it is usually difficult for the experts to identify the closeness of the opinions of the rest of the experts, and thus, it can be difficult to have a clear view of the current state of the consensus process. In this paper we present a tool that creates consensus diagrams that help experts to easily comprehend the current consensus state in the decision problem. This tool is based on several consistency, consensus and similarity measures and with the application of a clustering algorithm, it identifies and represents the different groups of experts with similar opinions, identifies a possible candidate for spokesperson for each group and easily depicts the consistency level expressed by each one of the experts.

关键词： Visualization Decision making Clustering algorithms Software engineering computer science Artificial intelligence Computational intelligence Communications technology Videoconference Electronic mail

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Design Principles and Formulation for Optical SMART Networks

Design Principles and Formulation for Optical SMART Networks

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MILCOM, Military Communications Conference

作者： Tao Zhang Kejie Lu Gaoxi Xiao S.-Q. Zheng School of Engineering and Computing Sciences New York Institute of Technology Old Westbury NY USA Department of Electrical and Computer Engineering University of Puerto Rico Mayaguez Puerto Rico Network Technology Research Centre School of Electrical and Electronic Engineering Nanyang Technological University Singapore Department of Computer Science University of Texas Dallas Richardson TX USA

Optical SMART (Scalable Multi-Access Reconfigurable Transport) network [1] is an emerging optical networking paradigm that can effectively provide connectivity based on the hypergraph theory. Similar to a conventional graph, which consists of a set of edges, a hypergraph consists of a set of hyperedges (or hyperchannels), each of which can connect two or more nodes and can support communications amongst the nodes inside the hyperchannel. To enable hyperchannel in optical SMART networks, we have designed a hybrid node architecture in our previous study [1]. In this paper, we explore the network design principles and formulation for optical SMART networks. In particular, we formulate the static hyperchannel establishment problem as a Mixed Integer Linear Program (MILP), where the set of possible hyperchannels is given.

关键词： Optical design Optical fiber networks Optical packet switching High speed optical techniques Optical buffering Optical network units Scalability Telecommunication traffic Optical fiber communication Wavelength division multiplexing

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The generation challenge programme platform: Semantic standards and workbench for crop science

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International Journal of Plant Genomics 2008年第1期2008卷 369601页

作者： Bruskiewich, Richard Senger, Martin Davenport, Guy Ruiz, Manuel Rouard, Mathieu Hazekamp, Tom Takeya, Masaru Doi, Koji Satoh, Kouji Costa, Marcos Simon, Reinhard Balaji, Jayashree Akintunde, Akinnola Mauleon, Ramil Wanchana, Samart Shah, Trushar Anacleto, Mylah Portugal, Arllet Ulat, Victor Jun Thongjuea, Supat Braak, Kyle Ritter, Sebastian Dereeper, Alexis Skofic, Milko Rojas, Edwin Martins, Natalia Pappas, Georgios Alamban, Ryan Almodiel, Roque Barboza, Lord Hendrix Detras, Jeffrey Manansala, Kevin Mendoza, Michael Jonathan Morales, Jeffrey Peralta, Barry Valerio, Rowena Zhang, Yi Gregorio, Sergio Hermocilla, Joseph Echavez, Michael Yap, Jan Michael Farmer, Andrew Schiltz, Gary Lee, Jennifer Casstevens, Terry Jaiswal, Pankaj Meintjes, Ayton Wilkinson, Mark Good, Benjamin Wagner, James Morris, Jane Marshall, David Collins, Anthony Kikuchi, Shoshi Metz, Thomas McLaren, Graham Van Hintum, Theo Crop Research Informatics Laboratory International Rice Research Institute (IRRI) DAPO Box 7777 Metro Manila Philippines Crop Research Informatics Laboratory International Maize and Wheat Improvement Center (CIMMYT) DF 06600 Mexico Apdo. Postal 6-641 Mexico Centre International de Recherche Agronomique Pour le Développement (CIRAD) 34398 Montpellier Cedex 5 Avenue Agropolis France Bioversity International 00057 Maccarese (Fiumicino) Rome Via dei Tre Denari 472/a Italy National Institute for Agrobiological Sciences (NIAS) Tsukuba Ibaraki 305-8602 Kannondai 2-1-2 Japan Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA) Brasilia DF 70770-900 Parque Estaçao Biologia Final W5 Norte Brazil Centro Internacional de la Papa (CIP) Lima 12 Avenida La Molina 1895 La Molina Peru International Crops Research Institute for the Semi-Arid Tropics Patancheru Andhra Pradesh 502324 India International Center for Agricultural Research in the Dry Areas Aleppo P.O. Box 5466 Syrian Arab Republic National Center for Genetic Engineering and Biotechnology 113 Thailand Science Park Klong Luang Pathumthani 12120 Phahonyothin Road Klong 1 Thailand Institute of Computer Science College of Arts and Sciences University of the Philippines Los Banos Laguna 4031 Philippines Department of Computer Science University of the Philippines Melchor Hall Diliman Quezon City 1101 Philippines National Center for Genome Resources Santa Fe NM 87505 2935 Rodeo Park Drive East United States Scottish Crop Research Institute Invergowrie Dundee DD2 5DA United Kingdom Department of Plant Breeding Cornell University Ithaca NY 14853 United States African Centre for Gene Technologies Lynnwood Ridge 0040 P.O. Box 75011 South Africa Department of Medical Genetics Faculty of Medicine University of British Columbia Vancouver BC V6T 1Z3 Canada School of Computing Science Simon Fraser Universtiy Burnaby BC V5A 1S6 8888 University Drive Canada Bioinformatics Graduate Program Genome Sciences Centre BC

The Generation Challenge programme (GCP) is a global crop research consortium directed toward crop improvement through the application of comparative biology and genetic resources characterization to plant breeding. A key consortium research activity is the development of a GCP crop bioinformatics platform to support GCP research. This platform includes the following: (i) shared, public platform-independent domain models, ontology, and data formats to enable interoperability of data and analysis flows within the platform;(ii) web service and registry technologies to identify, share, and integrate information across diverse, globally dispersed data sources, as well as to access high-performance computational (HPC) facilities for computationally intensive, high-throughput analyses of project data;(iii) platform-specific middleware reference implementations of the domain model integrating a suite of public (largely open-access/-source) databases and software tools into a workbench to facilitate biodiversity analysis, comparative analysis of crop genomic data, and plant breeding decision making.

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Presentation and Visualization of Redundant Code: Working Session Summary

Presentation and Visualization of Redundant Code: Working Se...

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Duplication, Redundancy, and Similarity in Software 2006

作者： Walenstein, Andrew Cordy, Jim Evans, Will Hassan, Ahmed Kamiya, Toshihiro Kapser, Cory Merlo, Ettore University of Louisiana at Lafayette Center for Advanced Computer Studies P.O. Box 44330 LafayetteLA70504-4330 United States Queen's University School of Computing KingstonONK7L 3N6 Canada University of British Columbia Department of Computer Science 201-2366 Main Mall VancouverBCV6T 1Z4 Canada University of Victoria Electrical and Computer Engineering Engineering Office Wing 315 P.O. Box 3055 VictoriaBCV8W 3P6 Canada Information Technology Research Institute Ubiquitous Software Group University of Waterloo David R. Cheriton School of Computer Science WaterlooONN2L 3G1 Canada C.P. 6079 Succ. Centre Ville MontréalQCH3C 3A7 Canada

This report summarizes the proceedings of a workshop discussion session presentation and visualization of aspects relating to duplicated, copied, or cloned code. The main outcomes of the working session were: (a) a realization that two researchers had independently generated very similar methods for browsing and visualization clone "clusters", and (b) a list of questions for visualization, particularly in relation to how the "proximity" of clones may relate to interest in the clone. © Duplication, Redundancy, and Similarity in Software *** rights reserved.

关键词： Visualization

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The First international workshop on patterns languages: Addressing Challenges (PLAC 2007)

The First international workshop on patterns languages: Addr...

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WikiSym'07, ISMM'07, HPC-GECO/CompFrame'07, DLS'07 - 22nd ACM SIGPLAN Conference on Object-Oriented Programming Systems and Applications Companion, OOPSLA'07

作者： Fayad, M.E. Chaing, Chia-Chu Chacin, Pablo Ramaswamy, Srini Sánchez-Ruíz, Arturo Nurcan, Selmin Dept. of Computer Engineering San José State University One Washington Square San José CA 95192 United States University of Arkansas Dept. of Computer Science 2801 South University Ave. Little Rock AR United States Technical University of Catalonya Departamento de Arquitectura de Computadores UPC Campus Nord Barcelona 08034 Spain Department of Computer Science Dickinson Hall Suite 515 University of Arkansas Little Rock AR 72204 United States School of Computing University of North Florida 4567 St Johns Bluff Rd. S. Jacksonville FL 32224-2669 United States Maítre de Conférences Centre de Recherche en Informatique Université Paris 1 Panthéon-Sorbonne France

ISBN: (纸本)9781595938657

A pattern language consists of a cascade or hierarchy of parts, linked closely together by patterns, which solve generically recurring problems that are associated with the parts. Each pattern has a title, and collectively the titles form a language for design [1] Pattern Languages are in life, simply a collection of interrelated patterns [2]. These interrelated patterns are combined in any way and combination to create new environments, where practitioners can solve context-specific ***, the concept of pattern languages has invaded over into the software engineering field, to describe prior experiences and the processes that stem from them, in a very simple language, where patterns are tactfully woven as a whole, and can be combined in any manner to solve a particular and complex problem. Yet, this process is still done in an ad-hoc manner and is not straightforward enough, to ease and speed up the software development ***, this workshop is driven forward by three main ***, how can we classify, develop, and utilize analysis and design patterns together towards the path of a problem resolution? Second, what is the "behind-the-"language that guides the sewing of patterns together as a whole? And third, how can we overcome and face challenges, other than patterns composition problems (patterns traceability, etc.) that can hinder the development of a system of patterns?

关键词： Object oriented programming

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Hidden access mechanism for demonstrating and teaching the grid

Hidden access mechanism for demonstrating and teaching the g...

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MIPRO 2006 - 29th International Convention: Microelectronics, Electronics and Electronic Technologies, MEET, Hypermedia and Grid Systems HGS

作者： Stancheva, R. Terstyansky, G. Kiss, T. Delaitre, T. Winter, S. Kacsuk, P. Kecskemeti, G. Centre of Parallel Computing Cavendish School of Computer Science University of Westminster 115 New Cavendish Street London W1W 6UW United Kingdom MTA SZTAKI 1111 Kende u. 13 Budapest Hungary

ISBN: (纸本)9532330186

There is a large number of legacy code applications that require a lot of resources, such as compute and storage resources. Grid computing is able to provide these resources for legacy applications but they cannot be executed on the Grid without either reengineering or converting these codes into Grid services. One of the solutions to gridify these codes is the Grid Execution Management for Legacy Code Applications (GEMLCA) that ports legacy codes into Grid services without code re-engineering and with minimum user effort using the P-GRADE portal to provide a userfriendly environment. Access to Grid environments, among others to GEMLCA, requires registration and/or certificate, which some users may not have. They raise several problems towards demonstration and learning environments, such as access control and security issues. The GEMLCA team developed the concept of a Grid demonstration and teaching environment, which includes the GEMLCA Demonstration Environment (GDE) and the GEMLCA Learning Environment (GLE) to fulfil the above objective. GDE allows nonregistered users to check the GEMLCA functionality and learn how to use it not having a registration or even a valid certificate using an account pool and a certificate pool. This environment gives a limited access to GEMLCA and Grid resources through quota and lifetime control. GLE, which is built on GDE, supports running tutorials of Grid courses and seminars. © 2006 by MIPRO All rights reserved.

关键词： Demonstrations

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Curves in the sand: Algorithmic drawing 18

Curves in the sand: Algorithmic drawing

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18th Annual Canadian Conference on Computational Geometry, CCCG 2006

作者： Damian, Mirela Demaine, Erik D. Demaine, Martin L. Dujmović, Vida El-Khechen, Dania Flatland, Robin Iacono, John Langerman, Stefan Meijer, Henk Ramaswami, Suneeta Souvaine, Diane L. Taslakian, Perouz Toussaint, Godfried T. Department of Computer Science Villanova University United States CSAIL Massachusetts Institute of Technology United States School of Computer Science Carleton University Canada Department of Computer Science and Software Engineering Concordia University Canada Department of Computer Science Siena College United States Department of Computer and Information Science Polytechnic University United States FNRS Départment d’Informatique Université Libre de Bruxelles Belgium School of Computing Queens University Canada Department of Computer Science Rutgers University United States Department of Computer Science Tufts University United States School of Computer Science McGill University Canada Centre for Interdisciplinary Research in Music Media and Technology Schulich School of Music McGill University Canada

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