Dealing with freeway bottleneck sections in ramps is hot research topic in most country. A traffic control model is built after dividing highway management units. New concept of regulating density is given after analy...
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ISBN:
(纸本)9781538621639
Dealing with freeway bottleneck sections in ramps is hot research topic in most country. A traffic control model is built after dividing highway management units. New concept of regulating density is given after analyzing data. The conclusions are obtained after numerical calculation, that is: before vehicles entering the bottleneck sections, density and speed of vehicles should be controlled. This conclusion is helpful for further research of intelligent transportation system.
The formalism of well-behaved timed languages was proposed in [7] as a tool for modeling practical real-time applications. We use this formalism for modeling aspects from the areas of real-time database systems and ad...
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The performance of computationally intensive scientific applications on the underlying system can be maximized by providing application-level load balancing of loop iterates via the use of dynamic loop scheduling (DLS...
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Large scale loosely coupled PCs can organize a cluster and form the grid computing on sharing each processing power;power of PCs, code migration and transaction distribution characterize the performance of distributed...
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ISBN:
(纸本)9781595938190
Large scale loosely coupled PCs can organize a cluster and form the grid computing on sharing each processing power;power of PCs, code migration and transaction distribution characterize the performance of distributed systems. This paper describes object code migration control mechanism in large scale loosely coupled distributed systems. The prototype of the middleware which migrates object code for computing is implemented, and the tradeoff of code migration was observed. Based on these experiments, several simulations for large scale loosely coupled PC clusters were performed, and the methodology to control code migration to have stable response time in the system is derived. The mechanism for object code migration is proposed based on the results of the simulations. The result will be applied to design the grid computing systems and mobile systems to maintain the proper performance. Copyright 2007 ACM.
Porting large parallel applications to new and various distributedcomputing platforms is a challenging task from a software engineering perspective. The primary aim of this paper is to demonstrate how the development...
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ISBN:
(纸本)0769515827
Porting large parallel applications to new and various distributedcomputing platforms is a challenging task from a software engineering perspective. The primary aim of this paper is to demonstrate how the development time to port very large applications to the Computational Grid can be significantly reduced. TOP-C and AMPIC are software packages that have each seen successful applications in their respective domains of parallel computing and process creation/communication over the Computational Grid. We combined the two packages in I man-week, thereby leveraging several man-years of previous independent software development. As a real world test case, the 1,000,000 line Geant4 sequential application was then deployed over the Computational Grid in 3 man-weeks by using TOP-C/AMPIC. The cluster parallelization of Geant4 using TOP-C is now included as part of the Geant44.1 distribution, and the integration of TOP-C/AMPIC and the Globus protocols will additionally enable the use of the fundamental Grid middleware services in the future. (C) 2003 Elsevier science B.V. All rights reserved.
In the present paper, we examine the problem of supporting application-specific computation within a network file server. Our objectives are (i) to introduce an easy to use yet powerful architecture for executing both...
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This paper proposes a new survivable algorithm, Enhanced Shared-Path Protection (ESPP), to tolerate multi-link failures in WDM optical networks. In ESPP, we consider the load balancing to reduce the blocking probabili...
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Software-defined networking combined with distributed and parallel applications has the potential to deliver optimized application performance at runtime. In order to investigate this enhancement and design future imp...
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ISBN:
(纸本)9781450329132
Software-defined networking combined with distributed and parallel applications has the potential to deliver optimized application performance at runtime. In order to investigate this enhancement and design future implementation, a datacenter with a programmable topology integrated with application state is needed. Towards this goal, we introduce the Flow Optimized Route Configuration Engine (FORCE). The FORCE is an emulated datacenter testbed with a programmable interconnection controlled by an SDN controller. We also utilize Hadoop as a case study of distributed and parallel applications along with a simulated Hadoop shuffle traffic generator. The testbed provides initial experimental evidence of support to our hypothesis for future SDN research. Our experiments on the testbed show a difference in application runtime a factor of over 2.5 times on shuffle traffic for Hadoop MapReduce jobs and the potential for significant speedup in warehouse scale data centers. Copyright 2014 ACM.
Protecting network-accessible resources from unauthorized use requires understanding of network vulnerability. Building attack models as chains of vulnerability exploits by an attacker can help locate flaws to prevent...
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Human conversation is the best example of loosely coupled distributed communication known to man. This study specifically considers those parts of the human conversation that show evidence of dynamism and attempts to ...
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Human conversation is the best example of loosely coupled distributed communication known to man. This study specifically considers those parts of the human conversation that show evidence of dynamism and attempts to model these parts with the objective of translating the knowledge of conversational dynamics into the domain of computerised distributed systems. The discipline of metaphorical modelling is adopted in order to create a communication framework that will maintain the aspects of dynamism and apply these design directives in distributed architectures.
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