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A Language to Enable distributed simulation of Extended Queueing Networks

JOURNAL OF COMPUTERS 2007年第4期2卷 76-86页

作者： Gianni, Daniele D'Ambrogio, Andrea Univ Rome TorVergata Dept Comp Sci Rome Italy

distributed simulators are increasingly being used for their intrinsic advantages in terms of reusability, fault tolerance, performance, and geographic distribution. The development of a distributed simulator, however, requires significant investments in terms of effort if compared to the development of traditional local simulators. This paper introduces jEQN, a Java-based language that significantly reduces the extra effort needed to develop a distributed simulator of extended queueing networks (EQNs), by enabling simulator developers to build distributed simulators as they were to be locally executed. By use of jEQN, simulator developers are enabled to easily switch from a local to a distributed version of an EQN simulator by only modifying few statements of the given local simulator. Moreover, these statements can be easily inferred by a very intuitive graphical procedure. The paper illustrates both the jEQN architecture, based on a layered approach, and the implementation details that contribute to achieve the above mentioned advantages.

关键词： Software Architecture simulation Language distributed simulation High Level Architecture Queueing Networks

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A gluing algorithm for distributed simulation of multibody systems

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NONLINEAR DYNAMICS 2003年第1-2期34卷 159-188页

作者： Wang, JZ Ma, ZD Hulbert, GM Univ Michigan Dept Mech Engn Ann Arbor MI 48109 USA

A new gluing algorithm is presented that can be used to couple distributed subsystem models for dynamics simulation of mechanical systems. Using this gluing algorithm, subsystem models can be analyzed at their distributed locations, using their own independent solvers, and on their own platforms. The gluing algorithm developed relies only on information available at the subsystem interfaces. This not only enables efficient integration of subsystem models, but also engenders model security by limiting model access only to the exposed interface information. These features make the algorithm suitable for a real and practical distributed simulation environment.

关键词： distributed simulation gluing algorithm multibody system simulation structural dynamics

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GRAPHICAL SPECIFICATION OF distributed simulation MODELS

GRAPHICAL SPECIFICATION OF DISTRIBUTED SIMULATION MODELS

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European simulation and Modelling Conference (ESM 2013)

作者： Penzes, Jiri Kavicka, Antonin Univ Pardubice Fac Elect Engn & Informat Dept Software Technol CZ-53210 Pardubice Czech Republic

ISBN: (纸本)9789077381793

The contribution pays attention to a graphical approach applied to specifications of distributed simulation models. The motivation of applying the mentioned approach is to enable the fast and user friendly designing of distributed simulation models. In addition, it is introduced an original simulation software tool, the environment of which supports the work with distributed simulation models.

关键词： distributed simulation graphical specification formalism decentralized configuration of logical processes simulation tool specialized in distributed simulations

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Using distributed simulation to Investigate Human-Autonomy Teaming 20th

Using Distributed Simulation to Investigate Human-Autonomy T...

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20th International Conference on Human-Computer Interaction (HCI International)

作者： Matessa, Michael Vu, Kim-Phuong L. Strybe, Thomas Z. Battiste, Vernol Schnell, Thomas Cover, Mathew Rockwell Collins Cedar Rapids IA 52498 USA Univ Calif Long Beach Long Beach CA 90840 USA San Jose State Univ Fdn Moffett Field CA 94035 USA Univ Iowa Iowa City IA 52242 USA

ISBN: (纸本)9783319920467;9783319920450

This paper describes the use of distributed simulation within and between organizations to investigate Human-Autonomy Teaming (HAT) with three simulations, showing a progression from integrating automation into a flight following ground station, increased HAT functionality for the ground station, and migration of the autonomy and HAT functionality into the flight deck. The multi-site distributed nature of the final simulation provided high efficiency by allowing researchers to work in their own labs for a long period of data collection. It also provided high fidelity by enabling access to a flight deck environment. Also, it managed costs by taking advantage of facilities and personnel in different locations over a multi-week simulation. Using these simulations, HAT factors were found to enhance ground station and flight deck environments. Conditions with HAT features were preferred by simulation participants to conditions without. Subjective and objective measures of workload were lower with HAT features. These results indicate that future investigations into aircraft support would benefit from the addition of HAT factors and the use of distributed simulation.

关键词： distributed simulation Human-Autonomy Teaming

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A Study on distributed simulation of Soil Wind Erosion and Its Application to the Tuhaimajia River Basin

A Study on Distributed Simulation of Soil Wind Erosion and I...

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Biennial International Conference on Ecological Informatics and Ecosystem Conservation (ISEIS)

作者： Zhao Yong Pei Yuan-sheng China Inst Water Resources & Hydropower Res Dept Water Resources Beijing 100038 Peoples R China

ISBN: (纸本)9781627485258

Under the joint effects of the basic natural conditions and human activities, soil wind erosion is very serious in the Tuhaimajia River Basin situated in the semi-humid region. The large-scale application of agricultural water saving measures in the river basin is directly affecting the moisture content and its temporal and spatial distribution of crop root zone. Soil moisture is an important factor influencing soil wind erosion, and the effect of agricultural water saving on soil erosion becomes an important indicator for the evaluation of water saving in the river basin. Based on a distributed simulation model for water resources allocation and water cycle (WACM) developed before, a process-based, continuous daily distributed simulation model for soil wind erosion is developed by adding the function of soil wind erosion simulation to WACM, and this model may be used to simulate the regional soil wind erosion process under the current conditions and with the effects of climate change, and water supply & use and farming activities of human beings. With this newly developed model, the 15-year soil wind erosion process in the Tuhaimajia River Basin during 1991-2005 is reconstructed, and it is discovered from the simulation results that the average soil wind erosion modulus of the 15 years is 1.217kg/m(2).a, i.e., the river basin as a whole has slight soil erosion, but soil wind erosion is very serious in some years and in parts of the river basin. The soil wind erosion of 1991 is at a moderate level, and the average soil wind erosion is also at a moderate level in some areas such as Xiajin in Shandong Province. Finally, quantitative analysis is preliminarily made on the effects of large-scale application of water saving measures on soil wind erosion in the river basin, indicating that intensive water saving exerts slight effects on the overall situation of soil wind erosion in the river basin, but produces significant effects in some areas. (C) 2009 Published by Elsev

关键词： Soil wind erosion distributed simulation The Tuhaimajia River Basin WACM Model

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Optimization of manufacturing processes by distributed simulation

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INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH 2006年第18-19期44卷 3677-3692页

作者： Weigert, G. Horn, S. Werner, S. Dresden Univ Technol Elect Packaging Lab D-01062 Dresden Germany Dresden Univ Technol Ctr Microtech Mfg D-01062 Dresden Germany

The paper describes a simulation-based optimization system for manufacturing processes. The principle suitability of simple Threshold Accepting and Great Deluge Algorithms for optimizing practical manufacturing systems is shown, as well as the possibility of parallelizing of these algorithms. A special IP Multicast architecture is introduced which allows the simulation model to be extended to multiple clients and so the efficiency of the optimization algorithms to be increased by concurrent simulation. Each client can log on or log out at an optimization server at any time so that it should be possible to use the idle computer capacity of a single production department or a whole company. The optimization server is implemented as an experimental option in the simulation system simcron MODELLER(R), which is particularly used in electronics and semiconductor manufacturing.

关键词： scheduling distributed simulation optimization manufacturing

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Using REST Web-Services Architecture for distributed simulation 09

Using REST Web-Services Architecture for Distributed Simulat...

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23rd International Workshop on Principles of Advanced and distributed simulation

作者： Al-Zoubi, Khaldoon Wainer, Gabriel Carleton Univ Dept Syst & Comp Engn Ctr Visualizat & Simulat Ottawa ON K1S 5B6 Canada

ISBN: (纸本)9780769537139

In recent years, Web Services technologies have been successfully used for simplifying interoperability while providing scalability and flexibility in multiple applications, including distributed simulation software. The RESTful-CD++ simulation Server provides Web Services according to the REST principles by exposing services as URIs and consumed via HTTP. messages. Therefore, the server becomes a service part of the Web that can be easily mashed-up with other applications and simulation software. In contrast, RPC-style SOAP-based Web Services use the Web as a transmission medium by exposing few URIs and many RPCs. RESTful-CD++ is (to our best knowledge) the only existing RESTful system in this area. Further, this distributed simulation package provides pioneering distributed simulation services using the Web architectural style. We present an overview of the principles, design and implementation of the RESTful-CD++ HTTP server and DCD++ simulation. We show that REST fulfills WS objectives with a much better and easier style than the SOAP-based systems.

关键词： distributed simulation SOA REST Web-Services CD++ DEVS

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Allowing Large-Scale Systems Evaluation with Ptolemy through distributed simulation

Allowing Large-Scale Systems Evaluation with Ptolemy through...

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3rd Brazilian Symposium on Computing Systems Engineering (SBESC)

作者： Brito, Alisson V. Negreiros, Angelo V. Fed Univ Paraiba UFPB Ctr Informat Joao Pessoa Paraiba Brazil

ISBN: (纸本)9781479938902

Nowadays, embedded systems have a huge amount of computational power and consequently, high complexity. It is quite usual to find different applications being executed in embedded systems. Embedded system design demands for method and tools that allow the simulation and verification in an efficient and practical way. This paper proposes the development and evaluation of a solution for embedded modeling and simulation of embedded systems in a distributed way by the integration of Ptolemy II and the High Level Architecture (HLA), in order to create an environment with high-performance execution of large-scale models. Experimental results demonstrated that the use of a non distributed simulation for some situations can be infeasible. It was demonstrated that a speedup of factor 4 was acquired when a model with 4,000 thousands actors were distributed in 8 different machines. It also presented a model of execution of each CPU core during the simulation.

关键词： Embedded Systems distributed simulation Heterogeneous simulation

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Coordination Schemes in distributed simulation of Relativistic Particle Transport 08

Coordination Schemes in Distributed Simulation of Relativist...

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23rd Annual ACM Symposium on Applied Computing

作者： Li, Ruipeng Jiang, Hai Su, Hung-Chi Arkansas State Univ Dept Comp Sci Jonesboro AR 72467 USA

ISBN: (纸本)9781595937537

In distributed simulation, overheads of coordinating operations across computing nodes could counteract the benefit of having extra machines. Meanwhile, some scientific applications such as relativistic particle transport exhibit strong data dependency among events. This paper proposed several coordination schemes to reduce communication frequency and volume, overlap computation and communication operations, and arrange event simulation speculatively. Performance gains are expected.

关键词： distributed simulation Discrete Event simulation Particle Systems

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Node Localization for distributed simulation Based on Logical Node Group in simulation Grid

Node Localization for Distributed Simulation Based on Logica...

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5th International Conference on E-learning and Games, Edutainment 2010

作者： Huang, Hai Tian, Lei Wu, Wei Sun, Songlin Jing, Xiaojun Beijing Univ Posts & Telecommun Sch Informat & Commun Engn Beijing Peoples R China Beijing Univ Posts & Telecommun Sch Econom & Management Beijing Peoples R China Beihang Univ State Key Lab Virtual Real Technol & Syst Beijing 100191 Peoples R China

ISBN: (纸本)9783642145322

Node localization fen federate migration in simulation grid is studied Both the load of computing node and the difference of communication delay in simulation grid Ire considered in locating the destination node of migrating federate simulation grid Is divided into a number of logical node groups in each of which the communication delays are approximate between nodes Locating processes includes intra-group processes and delay-centered inter-group processes The average communication delay among federates is minimized

关键词： Node localization distributed simulation logical node group simulation gild communication delay

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