Internet computing and grid technologies promise to change the way we tackle complex problems. they will enable large-scale aggregation and sharing of computational, data and other resources across institutional bound...
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ISBN:
(纸本)0769522491
Internet computing and grid technologies promise to change the way we tackle complex problems. they will enable large-scale aggregation and sharing of computational, data and other resources across institutional boundaries. As grid computing is becoming a reality, there is a need for managing and monitoring the available resources worldwide, as well as the need for conveying these resources to the everyday user. this paper describes a resource broker with its main function as to match the available resources to the user's needs. the use of the resource broker provides a uniform interface to access any of the available and appropriate resources using user's credentials. the resource broker runs on top of the Globus toolkit. therefore, it provides security and current information about the available resources and serves as a link to the diverse systems available in the grid.
the main objective of this paper is to propose a homogeneous approach to represent and process in silico models for predictive toxicology and also to improve the computational representation of developed models by har...
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the main objective of this paper is to propose a homogeneous approach to represent and process in silico models for predictive toxicology and also to improve the computational representation of developed models by harmonizing new trends in predictive data mining. We propose to combine local and global models as ensemble experts by mixing technologies in hybrid systems in order to improve the prediction accuracy, and also to provide reasonable training response time by using parallel processing. More investigations have still to be done to develop an optimized strategy, but our approach demonstrates encouraging results.
Popular network simulation tools, such as ns-2, are useful for undertaking experiments with emerging networking technologies. As networked applications become distributed at scales comparable to the Internet, such as ...
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Popular network simulation tools, such as ns-2, are useful for undertaking experiments with emerging networking technologies. As networked applications become distributed at scales comparable to the Internet, such as peer-to-peer applications, testing and experimentation becomes increasingly difficult and important. Withthis paper, we are introducing an elaborate extension to existing simulation capabilities by allowing realistic highly distributed application prototypes to be attached to a simulator for transparent testing and experimentation. We enable developers to focus on building their applications rather than detailing simulation scripts. Testing can then be performed in a natural setting. PDNS is a parallel and distributed version of the commonly used ns-2 simulation package. We describe our extensions to the PDNS simulator which allow real application prototypes to be run across a simulated network. We describe our use of virtualisation as a means for sending an application's network traffic through the simulator. Our implementation allows for large scale simulations withthousands of real peers and hundreds of thousands of simulated nodes in a network, thus we can test real peer-to-peer software at large scales.
An effective approach to accelerate applications is to execute them in parallel. there are value localities in values of program variables. Data value reuse is able to enhance performance in applications by canceling ...
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ISBN:
(纸本)3540240136
An effective approach to accelerate applications is to execute them in parallel. there are value localities in values of program variables. Data value reuse is able to enhance performance in applications by canceling same calculations. We propose the use of data value reuse and speculative parallelism with software to execute existing sequential applications in parallel. this study profiles value localities that exist in method arguments of benchmark programs, and evaluates performance improvements by applying data value reuse and speculative parallelism.
作者：
Kim, HKorea Univ
Grad Sch Informat Secur Seoul 136701 South Korea
We present parallel algorithms for the process of the biorthogonal wavelet transform(BWT). We have constructed processing elements (PEs) for the decomposition and reconstruction of the BWT to minimize computational op...
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ISBN:
(纸本)3540240136
We present parallel algorithms for the process of the biorthogonal wavelet transform(BWT). We have constructed processing elements (PEs) for the decomposition and reconstruction of the BWT to minimize computational operations. they can be performed using only integer shift and superposition operations;therefore, they may be applied to the implementation of image compression standards based on BWT, such as JPEG2000.
this paper presents an efficient and scalable approach to solve global optimization problem by distributedparallel tunneling using mobile agents. To use the parallel and concurrent characteristic of the tunneling alg...
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ISBN:
(纸本)3540240136
this paper presents an efficient and scalable approach to solve global optimization problem by distributedparallel tunneling using mobile agents. To use the parallel and concurrent characteristic of the tunneling algorithms and increase the speed of the computing, we use mobile agents as a tool for parallel implementation in a distributed environment. the experimental results demonstrate the feasibility and the potential of the proposed method.
Agent-based simulation of large multicellular biological systems has become a viable option owing to affordable parallel computers. such as Beowulf-style clusters. We describe a scalable modular software platform that...
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ISBN:
(纸本)3540240136
Agent-based simulation of large multicellular biological systems has become a viable option owing to affordable parallel computers. such as Beowulf-style clusters. We describe a scalable modular software platform that (i) provides for an easy integration of different. solvers computing internal dynamics of the cells, and (ii) dynamically adapts to the changing loads on the cluster nodes using a load balancing algorithm. Simulations of systems of about 100,000 bacterial cells have been shown to be feasible using the platform.
Unstructured Peer-to-Peer applications are very popular on the Internet. An efficient technique for improving performance of search method of these systems is to replicate file location information in P2P. In this pap...
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ISBN:
(纸本)3540240136
Unstructured Peer-to-Peer applications are very popular on the Internet. An efficient technique for improving performance of search method of these systems is to replicate file location information in P2P. In this paper we present random walk spread mechanism, and random walk spread and search method. Simulation results show that it achieves high success rates at low cost.
Due to the heterogeneity and the large volume of resources involved;the complexity of computational applications and their Grid environments, the importance of problem solving environment (PSE)s been more emphasized. ...
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ISBN:
(纸本)3540240136
Due to the heterogeneity and the large volume of resources involved;the complexity of computational applications and their Grid environments, the importance of problem solving environment (PSE)s been more emphasized. Currently, most PSE systems for computational applications mainly focus on development of an application for a specific domain and helping its execution with static resource configuration but does not consider of general form of PSE toolkit for its deployment to extended domains. this paper proposed a Grid-enabled PSE called as a computing Environment for Grid applications (CEGA) and discuss how it is evolving to develop a computational application in a style of workflow model and incorporate Grid computing services to extend its range of services and handle information for development, deployment, execution and maintenance for an application as well as an application requirement itself. In addition, the paper provides the architecture of CEGA and its implementation for development, execution and visualization of an application in detail.
Tailoring large ontologies can be a very cumbersome task. the Grid enables resource sharing to handle such tasks over a distributed environment. It makes sense then, to investigate the possibility of using resources o...
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ISBN:
(纸本)3540240136
Tailoring large ontologies can be a very cumbersome task. the Grid enables resource sharing to handle such tasks over a distributed environment. It makes sense then, to investigate the possibility of using resources on the Grid to tailor large Ontologies. this paper proposes a distributed ontology framework for tailoring ontologies in the Grid. the framework consists of five main categories;Ontology Processing, Ontology Location, Ontology Connection, Users' Connection and Algorithm Location.
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