Configuration for products in the distributed and dynamic computing environment motivates the demand for semantic based cooperation. Stand-alone data model of configuration systems does not meet the new requirements. ...
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View-Oriented parallel Programming is based on distributed Shared Memory which is friendly and easy for programmers to use. It requires the programmer to divide shared data into views according to the memory access pa...
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To overcome the disadvantages of existing algorithms in scheduling distributed real-time tasks, this paper proposes a post-scheduling optimization algorithm (PSO) based on a novel structure called Scheduled Clusters T...
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The dynamical Grid environment requires flexible and adaptive workflow system. This paper integrates Agents and Web Services into Grid Service Workflow System based on Colored Petri Nets. The combination of Agents and...
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Traditional loop-scheduling schemes are designed for homogeneous computing environments, and are probably not suitable for emerging heterogeneous PC clusters. This paper applies a two-phased method, named HPLS (Hybrid...
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ISBN:
(纸本)0769524052
Traditional loop-scheduling schemes are designed for homogeneous computing environments, and are probably not suitable for emerging heterogeneous PC clusters. This paper applies a two-phased method, named HPLS (Hybrid parallel Loop Scheduling), to heterogeneous PC-cluster environments. The key idea is to distribute most of the workload to each node according to its performance, which is modeled and estimated in advance. Experiments on our testbed PC-cluster showed that, in most cases, our method could reduce the execution time of application programs more than previous schemes could.
We propose a simple distributed hash table called ReCord, which is a generalized version of Randomized-Chord and offers improved tradeoffs in performance and topology maintenance over existing P2P systems. ReCord is s...
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This paper proposes JSGrid, as a software framework to build up computer clusters running on various operating systems. JSGrid makes good use of idle computational resources without installing any software. JSGrid the...
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Fast Fourier Transform(FFT) represents a common communication pattern shared by a large class of scientific and engineering problems and wavelength assignment is a key issue to increase efficiency and reduce cost in W...
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Gnutella-like Peer-to-Peer Networks, due to their extreme connectivity fluctuations, are highly robust against random failures. However, such error tolerance comes at a high price of attack survivability. In this pape...
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ISBN:
(纸本)0769524052
Gnutella-like Peer-to-Peer Networks, due to their extreme connectivity fluctuations, are highly robust against random failures. However, such error tolerance comes at a high price of attack survivability. In this paper, to enhance such attack survivability, we propose a new formulation used for defense against deliberately attacks based on two leading concepts: cost and load The cost measures how expensive it is to cure an attacked or infected node, and the load measures how important a link between two nodes is when propagating attacks or updating immunization information reversely. The combination of these factors leads us to introduce the concept of optimal targeted immunization, which formalizes the ideas of minimizing the risk of epidemic outbreaks in these networks. Using this analysis framework, we then devise a novel efficient targeted immunization scheme. The simulation results under a realistic Gnutella network show that our immunization scheme outperforms other existing methods, producing an arresting increase of the network attack tolerance at a lower price of eliminating malicious attacks.
In this paper a new partitioning algorithm for parallelization of post-placement VLSI procedures is presented. The partitioning technique divides problem tasks into multiple sessions of parallel processes, so that int...
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