The proceedings contain 179 papers. The special focus in this conference is on Personal Computer Based Networks of Workstations, Advances in parallel, distributed Computational Models and Video Processing. The topics ...
ISBN:
(纸本)354067442X
The proceedings contain 179 papers. The special focus in this conference is on Personal Computer Based Networks of Workstations, Advances in parallel, distributed Computational Models and Video Processing. The topics include: MPI collective operations over IP multicast;an open market-based architecture for distributed computing;the multicluster model to the integrated use of multiple workstation clusters;parallel information retrieval on an SCI-based pc-now;a pc-now based parallel extension for a sequential DBMS;the heterogeneous bulk synchronous parallel model;a new computation of shape moments via quadtree decomposition;a java applet to visualize algorithms on reconfigurable mesh;a hardware implementation of pram and its performance evaluation;a non-binary parallel arithmetic architecture;multithreaded parallel computer model with performance evaluation;a high performance microprocessor for multimedia computing;a novel superscalar architecture for fast DCT implementation;computing distance maps efficiently using an optical bus;advanced data layout optimization for multimedia applications;parallel parsing of mpeg video in a multi-threaded multiprocessor environment;parallelization techniques for spatial-temporal occupancy maps from multiple video streams;heuristic solutions for a mapping problem in a TV-anytime server network;a programming environment for real-time parallel vision;parallel low-level image processing on a distributed memory system;congestion-free routing of streaming multimedia content in BMIN-based parallelsystems;performance of on-chip multiprocessors for vision tasks;specification techniques for automatic performance analysis tools and controlling distributed shared memory consistency from high level programming languages.
This article presents a new model for the exploitation of the different levels of parallelism in general purpose processor based workstations in the framework of multimedia applications. It is called the GEMS model, s...
详细信息
ISBN:
(纸本)0780365364
This article presents a new model for the exploitation of the different levels of parallelism in general purpose processor based workstations in the framework of multimedia applications. It is called the GEMS model, standing for Gain, Effort, Management acid Size. It is used to study the intra-processor parallelisms including instruction level and data level parallelism, the inter-processor parallelisms ranging from shared-memory multiprocessor to distributed memory clusters and the system level parallelisms like input/output operations and the exploitation of external resources. The aim of this work is to help a programmer writing a multimedia application in choosing which level of parallelism will help to speed up the application and how to partition the application in small tasks to obtain the highest gain for a given parallelism. Indeed for an efficient implementation it is very important to have a good understanding of the architecture in order to design new algorithms or to optimize an existing application according to features available in PC workstations.
As neural systems become large and complex, sophisticated tools are needed to support effective model development and efficient simulation processing. Initially, during model development, rich graphical interfaces lin...
详细信息
ISBN:
(纸本)3540673547
As neural systems become large and complex, sophisticated tools are needed to support effective model development and efficient simulation processing. Initially, during model development, rich graphical interfaces linked to powerful programming languages and component libraries are the primary requirement. Later, during model simulation, processing efficiency is the primary concern. Workstations and personal computers are quite effective during model development, while parallel and distributed computation become necessary during simulation processing. We give first an overview of modeling and simulation in NSL together with a depth perception model example. We then discuss current and future work with the NSL/ASL system: in the development and simulation of modular neural systems executed in a single computer or distributed computer network.
We present a parallel implementation of a probabilistic algorithm for real time tracking of segments in noisy edge images. Given an initial solution -a set of segments that reasonably describe the input binary edge im...
详细信息
ISBN:
(纸本)0769507514
We present a parallel implementation of a probabilistic algorithm for real time tracking of segments in noisy edge images. Given an initial solution -a set of segments that reasonably describe the input binary edge image-, the algorithm efficiently updates the parameters of these segments to track the movements of objects in the image in successive image frames. The proposed method is based on the EM algorithm-a technique for parameter estimation of statistical distributions in presence of incomplete data-, used here to estimate the parameters of a mixture density. The algorithm is highly susceptible of parallelization, because of the uncoupled nature of the computations needed on its main data structures. This property is exploited in order to make an efficient version for paralleldistributed memory environments, under the message passing paradigm. We carefully describe the details of the implementation, and finally, we show an evaluation of the algorithm in a NOW (Network Of Workstations), using the standard Message Passing Interface (MPI) library. Our evaluation shows that the reached speedup is very close to the ideal optimum.
Large-scale scientific applications present great challenges to computational scientists in terms of obtaining high performance and in managing large datasets. These applications (most of which are simulations) may em...
详细信息
The availability of powerful microprocessors and high-speed networks as commodity components has enabled high-performance computing on distributedsystems (wide-area cluster computing). In this environment, as the res...
详细信息
Backpropagation based supervised feedforward Artificial Neural Networks (ANNs) have been developed for many applications (e.g. Rumelhart et al. 1986, Hinton 1989, Werbos 1990 and Riedmiller 1994) but no detailed study...
详细信息
This paper describes the design of a method, called ADDROL-Algorithm for distributed Database Reorganization On-Line, which supports on-line reorganization of the distributed database. The contributions of the paper a...
详细信息
This paper describes the design of a method, called ADDROL-Algorithm for distributed Database Reorganization On-Line, which supports on-line reorganization of the distributed database. The contributions of the paper are both theoretical and experimental. We present an algorithm for maintaining the biconnected components of a graph during a sequence of edge insertions and deletions.
distributed applications are realized by cooperation of multiple objects. Objects in the systems are replicated to make the systems fault-tolerant. Read and write request messages are issued to the replicas in a quoru...
详细信息
distributed applications are realized by cooperation of multiple objects. Objects in the systems are replicated to make the systems fault-tolerant. Read and write request messages are issued to the replicas in a quorum based scheme. A quorum based ordered relation among request messages is defined to make replicas consistent. We discuss a group protocol which supports a group of replicas with the quorum based ordered delivery of request messages.
暂无评论