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Simulation Symposium, 1999. Proceedings. 32nd Annual

Date 11-15 April 1999

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  • Proceedings 32nd Annual Simulation Symposium

    Publication Year: 1999
    Request permission for commercial reuse | PDF file iconPDF (154 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1999, Page(s): 159
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    Freely Available from IEEE
  • A simulation-based performance analysis of gang scheduling in a distributed system

    Publication Year: 1999, Page(s):26 - 33
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    In distributed systems job scheduling is a difficult problem. In this work we study a special type of scheduling called gang scheduling under which jobs consist of a number of interacting tasks which are scheduled to run simultaneously on distinct processors. The performance of various gang scheduling schemes is studied and compared for a variety of workloads. The main objective of the processor s... View full abstract»

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  • DYANA: an environment for embedded system design and analysis

    Publication Year: 1999, Page(s):50 - 57
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    The results presented are based on many years of experience of development and application of DYANA-an environment for the analysis of multiprocessor computer system operation. The architecture and basic features of such an environment are discussed. The main problems arising during such an environment's design are highlighted and possible solutions are shown. The key features of the DYANA environ... View full abstract»

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  • Microscopic simulations of freeway traffic flow

    Publication Year: 1999, Page(s):79 - 84
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    The article proposes novel software for traffic simulation. Traffic flow is simulated by allowing individual vehicles to move along a highway in a realistic manner. The vehicle movements are based on a fuzzy knowledge based model of highway driver behavior that contains an extensive set of rules covering all aspects of highway driving, including car following, braking, discretionary and mandatory ... View full abstract»

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  • A framework for analyzing parallel simulation performance

    Publication Year: 1999, Page(s):102 - 109
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB)

    The paper provides a framework for studying the complex performance interactions in parallel simulation along three main components: simulation model, parallel simulation strategy/protocol, and execution platform. We propose a methodology for characterizing the potential parallelism of a simulation model based on analytical modeling techniques. A clear understanding of the degree of event parallel... View full abstract»

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  • Dynamic calendar queue

    Publication Year: 1999, Page(s):20 - 25
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB)

    Discrete event simulations need a priority queue sorting events according to their timestamp to process events in their time order. As the number of events increases, the choice of data structure for this event list can affect the simulation performance significantly. A calendar queue is a data structure popularly used in most discrete event simulators due to its O(1) time complexity regardless of... View full abstract»

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  • TUFTsim: a multiple domain simulator for experimentation

    Publication Year: 1999, Page(s):44 - 49
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (72 KB)

    TUFTsim is a multilevel multiple domain concurrent simulator that is able to investigate and detect scenarios of behavior. A scenario is a combination of individual behavior or points of failure. As a behavior propagates through a model, it has the possibility of colliding into another behavior at a common node or juncture. The result of a collision may produce a new combined behavior. The inheren... View full abstract»

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  • A UML-based method to specify the structural component of simulation-based queuing network performance models

    Publication Year: 1999, Page(s):71 - 78
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    Simulation can be considered as a tightly coupled and iterative three-staged process composed of model design, model execution and execution analysis. In the model design phase, conceptual simulation models have been extensively used as the cornerstone specification formalism. All static and dynamic knowledge about the real system must be encoded in some form, to allow specification of interaction... View full abstract»

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  • Parallelization of SHIFT simulation environment

    Publication Year: 1999, Page(s):94 - 101
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    The SHIFT programming language and simulation environment were developed at California PATH, UC Berkeley. SHIFT is a special programming language designed to model dynamical networks of hybrid automata. Immediate applications of the SHIFT simulation framework include large scale simulations for the Automated Highway Systems, air traffic control, Mobile Offshore Base concept for the US Navy. In ord... View full abstract»

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  • A bird's-eye view system using augmented reality

    Publication Year: 1999, Page(s):126 - 131
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Augmented reality (AR) is the technology that provides users with real time helpful information on the real scenes as the users' requirement. The AR system supplies helpful information for user by using user interfaces and systematical combination between real scenes and related information. We present our bird's eye view system to look at virtual buildings with the harmony of environment in civil... View full abstract»

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  • An efficient asynchronous simulation technique for high speed slotted networks

    Publication Year: 1999, Page(s):11 - 18
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    The design of high-speed slotted networks requires the development of complex simulators for the evaluation of the system and protocol performance. The straightforward event-driven (asynchronous) approach for modeling a high-speed system becomes unfortunately more and more inefficient as the number of slots concurrently propagating in the network grows. This is due to the increasing number of even... View full abstract»

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  • Applying globally convergent techniques to conventional DC operating point analyses

    Publication Year: 1999, Page(s):153 - 158
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    The application of continuation methods to circuit simulation is discussed. Although many commercial circuit simulators use continuation methods, they are not globally convergent-that is, it is not guaranteed that a dc solution to the circuit will be found. Two continuation methods, “Gmin-stepping” and “source-stepping”, that are used in most circuit simulation programs are... View full abstract»

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  • Design and analysis of a quantum-based QoS-aware fair share server for integrated services networks

    Publication Year: 1999, Page(s):34 - 42
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    Discrete service disciplines have been shown capable of emulating the ideal generalized processor sharing (GPS) discipline within one maximum-sized packet's transmission time. As a result, the accuracy of such schemes increases with improvements in link speed due to the corresponding reduction in packet transmission delay. However the merits of such accuracy diminish with improvements in link spee... View full abstract»

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  • A framework for simulating heterogeneous virtual processors

    Publication Year: 1999, Page(s):58 - 67
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (56 KB)

    The paper examines the layered software modules of a heterogeneous multiprocessor simulator and debugger, and the design patterns that span these modules. Lucent's LUxWORKS simulator and debugger, works with multiple processor architectures. Its modeling infrastructure, processor models, processor monitor/control, hardware control, vendor simulator interface and Tcl/Tk extension layers are spanned... View full abstract»

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  • Performance evaluation of a parallel simulation environment

    Publication Year: 1999, Page(s):86 - 93
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    Developing a parallel discrete event simulation from scratch requires an in-depth knowledge of the mapping process from the physical model to the simulation model, and a substantial effort in coping with numerous parallelism issues in the underlying synchronization protocols adopted. The lack of software tools and environments to reduce the development effort significantly is a major hindrance in ... View full abstract»

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  • Intelligent mathematical modelling and simulation of robotic dynamic systems using a new fuzzy-fractal-genetic approach

    Publication Year: 1999, Page(s):112 - 117
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1228 KB)

    We describe a novel method for mathematical modelling and simulation (MMS) of nonlinear robotic dynamic systems using fuzzy logic techniques, genetic algorithms and fractal theory. The new fuzzy-fractal-genetic method combines soft computing techniques with mathematical methods for the domain of modelling and simulation of nonlinear robotic systems. This domain is quite complex because it is a wel... View full abstract»

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  • The human component of an atmosphere regeneration simulation tool

    Publication Year: 1999, Page(s):132 - 136
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    A regenerative life support system simulation tool (RLSS) is being developed to provide an easy to use alternative to the CASE/A simulation environment. The RLSS package is currently in use at JSC Houston to investigate atmospheric interactions in small closed systems. The crew component of this new tool is designed to provide easy access to all of the variables and logic required to model the hum... View full abstract»

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  • Genetic simulation for finite state machine identification

    Publication Year: 1999, Page(s):118 - 125
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    Identification methods (formal or simulation based), are used for logical design, test or sequential learning. Roughly, we can say that they consist of deriving an automaton model of a given sequential system from a functional description of its behavior. We present a novel identification approach based on genetic simulation. The first section offers a synthetic unified classification of the diffe... View full abstract»

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  • Design criterion for the statistics exchange control algorithms used in the statistical synchronization method

    Publication Year: 1999, Page(s):138 - 144
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The Statistical Synchronization Method (SSM) (Gy. Pongor, 1992) is a promising alternative to the conventional synchronization methods for parallel discrete event simulation. The conditions of the statistics exchange of the Statistical Synchronization Method are studied. A statistics exchange control algorithm is proposed that is based on prediction and synchronization point deletion. The so-calle... View full abstract»

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  • SIM-ENG: a traffic simulation engine

    Publication Year: 1999, Page(s):4 - 10
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (860 KB)

    The need for traffic analysis and traffic management applies to a vast range of disciplines. Simulation of traffic may assist in both analysis and management of traffic. In many situations, simulation of traffic enables accurate traffic scenarios to be observed without the need and expense of physically generating such traffic in the real system. SIM-ENG is a simulation engine suitable for the dis... View full abstract»

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  • Hardware support for floating point map function generation

    Publication Year: 1999, Page(s):145 - 152
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB)

    An algorithm suited for hardware implementation assists in evaluating two-variable floating-point map functions. A map function F(X,Z) is an arbitrary function found in jet engine simulations and other scientific applications. The hardware oriented algorithm involves two stages of processing: preprocessing and run time processing. During preprocessing, breakpoints are analyzed to generate data tab... View full abstract»

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