parallel and distributed Computing (PArdISC) is a parallel programming environment which provides the needed transparency as a scalable OpenFrame Computing Model. It can be used to configure the network as a loosely c...
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parallel and distributed Computing (PArdISC) is a parallel programming environment which provides the needed transparency as a scalable OpenFrame Computing Model. It can be used to configure the network as a loosely coupled parallel machine, processor pool architecture, and distributed computing environment with Logical Network Connectivity. The software architecture of PArdISC is made up of configuration servers, client processes, processor pool servers and process communication interface.
Active Expressions (A(e)) is a language-based model for the instantiation of type-safe concurrent applications. Using facilities included in modern object-oriented languages, Ae allows the definition of communication ...
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ISBN:
(纸本)0780342291
Active Expressions (A(e)) is a language-based model for the instantiation of type-safe concurrent applications. Using facilities included in modern object-oriented languages, Ae allows the definition of communication and synchronization patterns that, when combined with user provided functionality through well defined interfaces, instantiate complete concurrent applications. The approach has two unique characteristics: First, it shows that common patterns of concurrency can be expressed using language provided facilities. Second, the model can be implemented without requiring any complex user-interfaces, preprocessing stages or language extensions. It also shows that the pattern-based approach has the potential to reduce the complexity of developing concurrent applications.
A conceptionally simple algorithm is presented which decides the type of a query when the number of domains in common between two relations may exceed one. An implementation of the algorithm is outlined. The algorithm...
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A conceptionally simple algorithm is presented which decides the type of a query when the number of domains in common between two relations may exceed one. An implementation of the algorithm is outlined. The algorithm runs in O(max(e,e')) time and O(e) space complexity where e and e' are the number of edges in the transitive closure of the join graph and the query graph respectively. These results are relevant to the efficient processing of distributed queries.
This paper presents information on the content and resources of the internationally certified Master's program "High-Performance and distributed Information processing Systems" in the field of Applied Ma...
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This paper presents information on the content and resources of the internationally certified Master's program "High-Performance and distributed Information processing Systems" in the field of Applied Mathematics and Computer Science. The paper studies scientific achievements of the academic staff, peculiarities of courses currently held, characteristics of available facilities and resources, prospects for the Master's worldwide research activities at a high scientific level, and opportunities to pursue postgraduate studies and to defend a PhD thesis. (c) 2017 The Authors. Published by Elsevier Ltd.
A highly intelligent graphic terminal has been developed which has simple hardware structure and can be operated easily with quick response as a TSS terminal of a host computer. Software and hardware of the terminal a...
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A highly intelligent graphic terminal has been developed which has simple hardware structure and can be operated easily with quick response as a TSS terminal of a host computer. Software and hardware of the terminal are described, as well as an architecture of integrated CAD/CAM system using this terminal.
Mobile distributed real-time databases are needed in security-critical applications, e.g., e-commerce, stock trading system, and military applications. In these applications, mobile distributed real-time database syst...
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ISBN:
(纸本)3540297693
Mobile distributed real-time databases are needed in security-critical applications, e.g., e-commerce, stock trading system, and military applications. In these applications, mobile distributed real-time database systems have to simultaneously satisfy two requirements in guaranteeing data security and minimizing the deadline miss ratio for admitted transactions. Multilevel secure database system based on mandatory access control can prevent direct unlawful information flows between transactions belonging to different clearance levels. However, it cannot prevent the covert communications between transactions belonging to different clearance levels. This paper presents a secure hybrid optimistic real-time concurrency control protocol (SHORTCC). The protocol not only considers carefully the inherent characteristics of mobile environment and the timing constraints of time-critical applications, but also achieves data security without sacrificing real-time performance significantly.
For communication-intensive parallelapplications, the maximum degree of concurrency achievable is limited by the communication throughput made available by the network. In previous work, we showed experimentally that...
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For communication-intensive parallelapplications, the maximum degree of concurrency achievable is limited by the communication throughput made available by the network. In previous work, we showed experimentally that the performance of certain parallelapplications running on a workstation network can be improved significantly if a congestion control protocol is used to enhance network performance. In this paper, we characterize and analyze the communication requirements of a large class of supercomputing applications that fall under the category of fixed-point problems, amenable to solution by parallel iterative methods. This results in a set of interface and architectural features sufficient for the efficient implementation of the applications over a large-scale distributed system. In particular, we propose a direct link between the application and network layer, supporting congestion control actions at both ends. This in turn enhances the system's responsiveness to network congestion, improving performance. Measurements are given showing the efficacy of our scheme to support large-scale parallel computations.
The proceedings contains 74 papers from the 3rdinternationalconference on High Performance Computing. Topics discussed include: genetic algorithms, optical computers, parallel webservers, direct circuit simulation, ...
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The proceedings contains 74 papers from the 3rdinternationalconference on High Performance Computing. Topics discussed include: genetic algorithms, optical computers, parallel webservers, direct circuit simulation, character recognition, multimedia servers, the RAID configuration tool, concurrent call/return communication, parallelprocessing systems, real-time distributed operating systems, database systems, mobile computers, binary trees, close wormhole networks, program analysis, data-flow analysis, reduced instruction set computing (RISC), and edge extraction.
With the rapid development of information communication, computer and control technology, the smart grid has become a direction and trend of the development of electric power industry. The ultimate goal of smart grid ...
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ISBN:
(纸本)9781509035397
With the rapid development of information communication, computer and control technology, the smart grid has become a direction and trend of the development of electric power industry. The ultimate goal of smart grid is to build a panoramic real-time system which covers the whole production process of power system. However, it is difficult to meet the demand of the power system dispatching department to store and process large scale data in the current power system. In view of the above reasons, this paper develops the Mysql-CIM model, realizes the distributed cloud storage of power network data, and develops the application of the parallel topology processing of power network. Verified by the case, this paper develops the model Mysql-CIM fully meet requirements of the smart grid of system reliability, availability, high throughput;In this paper, the development of the power network based on CIM parallel topological processing is applied to realize the fast network topology processing and topology island formation, its running time scale increased to milliseconds, greatly improving the work efficiency of the system.
A parallel quadrilateral mesh generation using advanced front technology is presented in this paper. An improved quadrilateral mesh generation technology which uses the advancing Front technology was introduced by the...
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A parallel quadrilateral mesh generation using advanced front technology is presented in this paper. An improved quadrilateral mesh generation technology which uses the advancing Front technology was introduced by the authors previously. This new quadrilateral mesh generation technique has been developed for use with parallel computing environments, The parallel code has been created by adapting the sequential code using each coarse quadrilateral as a sub-domain for remeshing. A transputer-based parallel system and a heterogeneous network of workstations using the parallel virtual machine system were employed. The use of these parallel environments to improve the efficiency of the proposed mesh generator was investigated. Some pre-processes have been introduced to ensure load balancing during the parallel mesh generation. A post processor has been developed to assist in the assembly of the distributed portions of the mesh. Four examples are presented to demonstrate the robustness and efficiency of this parallel mesh generator. Some nearly linear speed-up curves have been achieved for some large meshes by using up to 11 transputers. (C) 1999 Civil-Comp Ltd and Elsevier Science Ltd. All rights reserved.
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