We show that the latest version of massively parallelprocessing associative string processing architecture (System-V) is applicable for fast Monte Carlo simulation if an effective on-processor random number generator ...
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ISBN:
(纸本)0769500595
We show that the latest version of massively parallelprocessing associative string processing architecture (System-V) is applicable for fast Monte Carlo simulation if an effective on-processor random number generator is implemented. Our lagged Fibonacci generator can produce 10(8) random numbers on a processor string of 12K PE-s. The time dependent Monte Carlo algorithm of the one-dimensional non-equilibrium kinetic Ising model perfoms 80 faster than the corresponding serial algorithm on a 300 MHz UltraSparc.
This paper considers the application of bio-inspired systems in the design of a novel and highly parallel image processing tool to detect edges within conventional grey-scale images. The aim of the work is to implemen...
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ISBN:
(纸本)0769500595
This paper considers the application of bio-inspired systems in the design of a novel and highly parallel image processing tool to detect edges within conventional grey-scale images. The aim of the work is to implement a new image processing architecture through evolvable hardware that is able to adapt according to the particular images encountered The simulation of such a system through the toe of evolutionary algorithms and genetic programming is demonstrated for rite conventional image processing operation of edge detection. Results al-e presented for this system and evaluated with respect to a conventional Sobel edge detector.
The paper describes the design and implementation of a security architecture for a HLA/RTI prototype developed at ONERA/CERT. The major security objective is to protect the intellectual property of firms participating...
The proceedings contain 15 papers. The topics discussed include: the convergence of multicast communication and active networking: opportunities for restructuring networked applications;distributed interaction in virt...
ISBN:
(纸本)0769504590
The proceedings contain 15 papers. The topics discussed include: the convergence of multicast communication and active networking: opportunities for restructuring networked applications;distributed interaction in virtual spaces;collaborative virtual environment standards: a performance evaluation;analysis of dead reckoning procedures by using hybrid automata;near real-time simulation of particle systems;object and ownership management in air traffic control simulations;distributed interactive learning environment;reliable multicast network transport for distributed virtual simulation;an approach for stream transmission over HIA-RTI in distributed virtual environments;performance analysis of packet bundling techniques in DIS;resolving concurrent interactions;HLA support in a discrete event simulation language;ruminations on the implications of multi-resolution modeling on DIS/HLA;design and implementation of a distributed interactive simulation security architecture;simulation of multimedia systems based on actors and QoS-synchronizers;and agent-aided collaborative virtual environments over HLA/RTI.
parallel database systems are the key to high performance database processing. In this paper, we propose parallel join algorithms in shared disk parallel database systems, where all coupled nodes are connected via a h...
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The bubble algorithm evaluated in this paper assures message deadlock freedom in k-ary n-cube network without wing virtual channels. This algorithm is based both on a dimension order routing (DOR) and on a restricted ...
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ISBN:
(纸本)0769500595
The bubble algorithm evaluated in this paper assures message deadlock freedom in k-ary n-cube network without wing virtual channels. This algorithm is based both on a dimension order routing (DOR) and on a restricted injection policy extended to the dimension changes. An exhaustive comparison between the bubble mechanism and the classical deterministic virtual channels solution is presented here. For that purpose, the message router of both proposals has been designed by using VHDL descriptions and the Synopsys VLSI CAD tool. Additionally :formal models of the routers, based on colored Petri nets, have been carried out together with simulation techniques in order to assure the validation of the results and shorten the design cycle. The performance evaluation of n-dimension tori highlights the benefits of the bubble algorithm as both the temporal delay and the necessary silicon area of the message router ape reduced.
There has been a growing interest in the HLA proposal as a common framework for real-time, distributed and interactive simulations. Although most of HLA compliant federates are for the moment developed with general pu...
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The GRISSLi coupling interface is a runtime library designed for the coupled computation of grid-based multidisciplinary applications. Established simulation programs, which are deleted to a single discipline, can be ...
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ISBN:
(纸本)0769500595
The GRISSLi coupling interface is a runtime library designed for the coupled computation of grid-based multidisciplinary applications. Established simulation programs, which are deleted to a single discipline, can be interconnected to a complex simulation system via the GRISSLi coupling interface without recoding the participating programs. We introduce a data model to establish the links between the (dynamic) grids and the attached coupling values in a single application program and to establish the mappings between grids and coupling values among different application programs. The user-specified consistency model is realized ruing asynchronous communication based on the MPI message passing standard Efficient communication is achieved by pre-computing an optimized communication schedule and overlapping communication with computation. Flexible coupling algorithms with adaptive grids and branches are supported in GRISSLi. We have developed a prototype implementation, which provides language bindings in ANSI C and Fortran, and runs currently on IBM RS/6000 SP Gray T3E, SGI Origin/Octane and HP-V Class. We verify the functionality and evaluate the performance of our library rising an industry relevant pilot application, the steel strip production process.
The HLA-RTI provides a general-purpose network communications mechanism for distributed Virtual Environments (DVE) but does not provide a stream transmission mechanism directly. This paper introduces a solution for st...
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Discrete event simulation is widely used within the networking community for purposes such as demonstrating the validity of network protocols and architectures. Depending on the level of detail modeled within the simu...
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Discrete event simulation is widely used within the networking community for purposes such as demonstrating the validity of network protocols and architectures. Depending on the level of detail modeled within the simulation, the running time and memory requirements can be excessive. The goal of our research is to develop and demonstrate a practical, scalable approach to parallel and distributedsimulation that will enable widespread reuse of sequential network simulation models and software. We focus on an approach to parallelization where an existing network simulator is used to build models of subnetworks that are composed to create simulations of larger networks. Changes to the original simulator are minimized, enabling the parallel simulator to easily track enhancements to the sequential version. In this paper we describe our lessons learned in applying this approach to the publicly available ns software package, and converting it to run in a parallel fashion on a network of workstations. This activity highlights a number of important problems, from the standpoint of how to parallelize an existing serial simulation model and achieving acceptable parallel performance.
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