this paper presents a mobile-agent-based distributedparallelcomputing middleware (MDPCM) that is used to implement distributedparallelcomputing by sharing computing resources among Internet users. the middleware i...
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ISBN:
(纸本)9789806560550
this paper presents a mobile-agent-based distributedparallelcomputing middleware (MDPCM) that is used to implement distributedparallelcomputing by sharing computing resources among Internet users. the middleware is divided into two layers with characteristics of the mobile agent technology and it provided basic services for the distributedparallelcomputing, especially system communication, job migration and fault tolerance mechanism. the main implementation technologies are analyzed and discussed. A prototype system MDPCM-based is implemented and the experiment results are shown.
the work offers to use distributedcomputing on client-server architecture to solve high dimensional tasks. VLSI topological layout design problem is employed as a high dimensional task. Simulation modelling shows tha...
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ISBN:
(纸本)9781467368551
the work offers to use distributedcomputing on client-server architecture to solve high dimensional tasks. VLSI topological layout design problem is employed as a high dimensional task. Simulation modelling shows that the hierarchical architecture allows reducing the design time by an order of magnitude compared to parallel-serial client-server architecture.
Most of the actual approaches to address the problem of serial code executing on parallel multi-core processors try to exploit the parallelism of the code during compile time. Such a solution is very efficient but pla...
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ISBN:
(纸本)9780769534435
Most of the actual approaches to address the problem of serial code executing on parallel multi-core processors try to exploit the parallelism of the code during compile time. Such a solution is very efficient but places the burden on the programmer to know the code will be running on a parallel architecture. In addition, the programmer needs to know the details of the architecture in order to generate efficient parallel code. In this work we present an alternative approach, the layer disruption model, that improves the performance of serial code executing on parallel architectures. We present a small test case that shows the benefits of the model.
How to share the data in databases of autonomous organizations quickly and flexibly is an important problem. Traditional data integration systems are supposed to be a solution to the problem. Unfortunately, they requi...
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ISBN:
(纸本)9780769534435
How to share the data in databases of autonomous organizations quickly and flexibly is an important problem. Traditional data integration systems are supposed to be a solution to the problem. Unfortunately, they require a global schema before they can be used to share data and they are centralized system. they can not support data sharing without a common schema and on-demand data sharing in applications. In addition, security is also the important requirements. this paper presents a community-based system for distributed data integration and sharing, Honeycomb. Honeycomb supports many virtual data integration and sharing systems on a single machine, and the system utilizes Web Services to access data on other nodes to avoid changing security configuration of autonomous organizations. In addition, the system adopts new cache techniques to improve performance greatly.
Advancement in parallel computers technology has greatly influenced the numerical methods used for solving partial differential equations (pdes). A lot of attention has been devoted to the development of numerical sch...
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ISBN:
(纸本)9780769534435
Advancement in parallel computers technology has greatly influenced the numerical methods used for solving partial differential equations (pdes). A lot of attention has been devoted to the development of numerical schemes which are suitable for the parallel environment. In this work, we investigate the parallel implementation of the four-point Modified Explicit Decoupled Group (MEDG) method which was introduced by Ali and Ng (2007) as a fast solver for the two dimensional Poisson pde. the method was shown to be more superior than all the methods belonging to the four-points explicit group family namely the Explicit Group (EG) [8], Explicit Decoupled Group (EDG) [1] and Modified Explicit Group (MEG) [7]. this paper presents the preliminary results of the parallel algorithms implemented on a distributed memory PC cluster. Two parallelizing strategies comprising of the two-color zebra and the four-color chessboard orderings in solving a two dimensional Poisson model problem will be discussed.
Pattern recognition applications such as natural phenomena detection and structural health monitoring have been widely applied using wireless sensor networks. these applications involve large amount of data to be anal...
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ISBN:
(纸本)9780769534435
Pattern recognition applications such as natural phenomena detection and structural health monitoring have been widely applied using wireless sensor networks. these applications involve large amount of data to be analysed, and thus incur high computational time and complexity In this paper we present a parallel associative memory-based pattern recognition algorithm known as distributed Hierarchical Graph Neuron (DHGN). It is a single-cycle learning algorithm with in-network processing capability;able to reduce computational loads by efficiently disseminates recognition processes throughout the network. Hence, suitable to be deployed in wireless sensor networks. the results of the accuracy and scalability tests show that our system performs with high accuracy and remains scalable for increases in pattern size and the number of stored patterns. the response time for pattern recognition remains within milliseconds irrespective of the size of the network.
the paper presents IARnet toolkit, a set of high-level tools and services simplifying integration of software resources into a distributedcomputing environment and development of distributedapplications involving dy...
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ISBN:
(纸本)9783540739395
the paper presents IARnet toolkit, a set of high-level tools and services simplifying integration of software resources into a distributedcomputing environment and development of distributedapplications involving dynamic discovery and composition of resources. A case study of using IARnet for solving large scale discrete optimization problems is discussed.
Numerical methods based on interval arithmetic ore efficient means to reliably solve nonlinear systems of equations. Algorithm bc3revise is an interval method that tightens variables9; domains by enforcing a proper...
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ISBN:
(纸本)9780769534435
Numerical methods based on interval arithmetic ore efficient means to reliably solve nonlinear systems of equations. Algorithm bc3revise is an interval method that tightens variables' domains by enforcing a property called box consistency. It has been successfully used on difficult problems whose solving eluded traditional numerical methods. We present a new algorithm to enforce box consistency that is simpler than bc3revise, faster and easily data parallelizable. A parallel implementation with Intel SSE2 SIMD instructions shows that an increase in performance of up to an order of magnitude and more is achievable.
Metacube is an attractive, hypercube-like interconnection network that can connect an extremely large number of nodes with a small node degree while keeping a relatively short diamemter A Metacube MC(k, m) connects 2(...
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ISBN:
(纸本)9780769534435
Metacube is an attractive, hypercube-like interconnection network that can connect an extremely large number of nodes with a small node degree while keeping a relatively short diamemter A Metacube MC(k, m) connects 2(2km+k) nodes with only k + m links per node. Metacube can be used to build parallelcomputing systems of very large scale with a small number of links per node. In this paper we propose a new presentation of Metacube for algorithmic design on Metacube. Based on the new presentation, we give an efficient algorithm for parallel prefix computation on Metacubes that runs in 2(k)m(k + 1) + k communication steps and 2(k+1) m + 2k computation steps.
In recent years, wireless sensor networks have received great interest with rapid developments in both hardware and software aspects. However, there is always a problem with limited energy supply for the tiny sensor n...
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ISBN:
(纸本)9780769534435
In recent years, wireless sensor networks have received great interest with rapid developments in both hardware and software aspects. However, there is always a problem with limited energy supply for the tiny sensor node. In wireless imaging sensor network in which imaging devices are utilized, the bottleneck of energy consumption efficiency is even more serious. the main activities of such imaging networks are related to image data transmission over wireless channel. therefore it is necessary to seek a good balance between the image quality and energy conservation. We propose an energy-efficient control scheme based on recent dynamic range coding techniques. the simulation results are presented with emphasis on prolonging the sensor network lifetime.
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