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检索条件"任意字段=Proceedings of the Second International Symposium on Databases in Parallel and Distributed Systems"

共 513 条记录，以下是171-180 订阅

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On the load distribution and performance of meta-computing systems

On the load distribution and performance of meta-computing s...

引用

international symposium on parallel and distributed Computing

作者： I.K. Savvas T. Kechadi Parallel Computational Research Group Department of Computer Science University College Dublin Dublin Ireland

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A parallel implementation of chebyshev preconditioned conjugate gradient method

A parallel implementation of chebyshev preconditioned conjug...

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international symposium on parallel and distributed Computing

作者： C. Akcadogan H. Dag Computational Science and Engineering Program Informatics Institute Istanbul Technical University Istanbul Turkey

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Performance modeling of the Grace Hash Join on cluster architectures

Performance modeling of the Grace Hash Join on cluster archi...

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international symposium on parallel and distributed Processing (IPDPS)

作者： E. Schikuta Institut für Informatik und Wirtschaftsinformatik University of Technology Vienna Vienna Austria

The aim of the paper is to develop a concise but comprehensive analytical model for the well-known Grace Hash Join algorithm on cost effective cluster architectures. This approach is part of an ongoing project to develop algorithms for the design of quasi-optimal query execution plans for parallel database systems. We try to concentrate on a limited number of characteristic parameters to keep the analytical model clear and focused. We believe that a meaningful model can be built upon only three characteristic parameter sets, describing main memory size, the I/O bandwidth and the disk bandwidth. We justify our approach by a practical implementation and a comparison of the theoretical and real performance values.

关键词： Clustering algorithms Workstations Database systems Relational databases Algorithm design and analysis Bandwidth parallel processing Analytical models Costs Database machines

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A negotiation protocol for database resource binding

A negotiation protocol for database resource binding

引用

international symposium on parallel and distributed Computing

作者： Chang Huang Zhaohui Wu GuoZhou Zheng Grid Computing Laboratory College of Computer Science University of Zhejiang China

ISBN: (纸本)0769520693

The negotiation process is a necessary precondition for many wide-area based applications which involve interactions across multiple autonomous entities. In the case where database resources are explicitly exposed to the distributed computing context like the Grid, it is necessary for unauthorized database users to get authorized so that they can be granted with certain privileges to access the desirable database resources. The facility to establish a legal identity for database user is one of the functionalities that the database resource management framework should provide. In this paper, we give a handshaking protocol which is applied between database clients and database service providers to achieve the database-specific negotiation. It's a six-phased protocol, which is described in terms of service operations in our database resource management middleware, which is an OGSA compliant service-based system.

关键词： Protocols Resource management distributed databases Permission Grid computing Satellite broadcasting Local area networks Educational institutions Computer science Application software

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Early error detection in industrial strength cache coherence protocols using SQL

Early error detection in industrial strength cache coherence...

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international symposium on parallel and distributed Processing (IPDPS)

作者： M. Subramaniam Computer Science Department University of Nebraska Omaha NE USA

A table-driven approach for designing industrial strength cache coherence protocols based on relational database technology is described. Protocols are specified using several interacting multi-input, multi-output controller state machines represented as database tables. Protocol scenarios specified using SQL constraints are solved to automatically generate database tables, and to statically check protocol properties including absence of deadlocks and other protocol invariants. The debugged tables are mapped to hardware using SQL operations while preserving protocol properties. The approach is deployed at Fujitsu System Technology Division in the design of their next generation multiprocessor and has discovered several errors early in the design cycle.

关键词： Protocols Relational databases Control systems Industrial relations Hardware Debugging Multiprocessing systems Testing Computer errors Computer science

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A general framework for searching in distributed data repositories

A general framework for searching in distributed data reposi...

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international symposium on parallel and distributed Processing (IPDPS)

作者： S. Bakiras P. Kalnis T. Loukopoulos Wee Siong Ng Department of Electrical & Electronic Engineering University of Hong Kong Hong Kong China School of Computing National University of Singapore Singapore Department of Computer Science Hong Kong University of Science and Technology Hong Kong China

This paper proposes a general framework for searching large distributed repositories. Examples of such repositories include sites with music/video content, distributed digital libraries, distributed caching systems, etc. The framework is based on the concept of neighborhood; each client keeps a list of the most beneficial sites according to past experience, which are visited first when the client searches for some particular content. Exploration methods continuously update the neighborhoods in order to follow changes in access patterns. Depending on the application, several variations of search and exploration processes are proposed. Experimental evaluation demonstrates the benefits of the framework in different scenarios.

关键词： Peer to peer computing Network servers distributed computing Drives Computer science Software libraries Internet Publishing Image databases Video sharing

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Optimal algorithms for scheduling divisible workloads on heterogeneous systems

Optimal algorithms for scheduling divisible workloads on het...

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international symposium on parallel and distributed Processing (IPDPS)

作者： O. Beaumont A. Legrand Y. Robert LaBRI UMR CNRS Bordeaux France ENS LIP UMR CNRS-INRIA Lyon France

In this paper, we discuss several algorithms for scheduling divisible loads on heterogeneous systems. Our main contributions are (i) new optimality results for single-round algorithms and (ii) the design of an asymptotically optimal multi-round algorithm. This multi-round algorithm automatically performs resource selection, a difficult task that was previously left to the user. Because it is periodic, it is simpler to implement, and more robust to changes in the speeds of the processors and/or communication links. On the theoretical side, to the best of our knowledge, this is the first published result assessing the absolute performance of a multi-round algorithm. On the practical side, extensive simulations reveal that our multi-round algorithm outperforms existing solution on a large variety of platforms, especially when the communication-to-computation ratio is not very high (the difficult case).

关键词： Scheduling algorithm Load modeling Processor scheduling Delay Multimedia databases Costs Algorithm design and analysis Robustness Computational modeling Books

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A numerical study of some parallel algebraic preconditioners

A numerical study of some parallel algebraic preconditioners

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international symposium on parallel and distributed Processing (IPDPS)

作者： Xing Cai M. Sosonkina Simula Research Laboratory University of Oslo Oslo Norway University of Minnesota Duluth MN USA

We present a numerical study of several parallel algebraic preconditioners, which speed up the convergence of Krylov iterative methods when solving large-scale linear systems. The studied algebraic preconditioners are of two types. The first type includes simple block preconditioners using incomplete factorizations or preconditioned Krylov solvers on the subdomains. The second type is an enhancement of the first type in that Schur complement techniques are added to treat subdomain-interface unknowns. The numerical experiments show that the scalability properties of the preconditioners are highly problem dependent, and a simple Schur complement technique is favorable for achieving good overall efficiency.

关键词： Linear systems Vectors Sparse matrices Concurrent computing Iterative methods Partial differential equations Kernel Laboratories Convergence of numerical methods Large-scale systems

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Lightweight logging and recovery for distributed shared memory over virtual interface architecture

Lightweight logging and recovery for distributed shared memo...

引用

international symposium on parallel and distributed Computing

作者： Soyeon Park Youngjae Kim Seung Ryoul Maeng Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology South Korea

ISBN: (纸本)0769520693

As software distributed Shared Memory(DSM) systems become attractive on larger clusters, the focus of attention moves toward improving the reliability of systems. In this paper, we propose a lightweight logging scheme, called remote logging, and a recovery protocol for home-based DSM. Remote logging stores coherence-related data to the volatile memory of a remote node. The logging overhead can be moderated with high-speed system area network and user-level DMA operations supported by modern communication protocols. Remote logging tolerates multiple failures if the backup nodes of failed nodes are alive. It makes the reliability of DSM grow much higher. Experimental results show that our fault-tolerant DSM has low overhead compared to conventional stable logging and it can be effectively recovered from some concurrent failures.

关键词： Protocols Computer architecture Fault tolerance Computer network reliability Telecommunication network reliability Workstations Personal communication networks parallel processing parallel programming Scalability

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GridBank: a Grid Accounting Services Architecture (GASA) for distributed systems sharing and integration

GridBank: a Grid Accounting Services Architecture (GASA) for...

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international symposium on parallel and distributed Processing (IPDPS)

作者： A. Barmouta R. Buyya Department of Computer Science and Software Engineering University of Western Australia Nedlands WA Australia Grid Computing and Distributed Systems (GRIDS) Lab Department of Computer Science and Software Engineering University of Melbourne Australia

Computational Grids are emerging as a new infrastructure for Internet-based parallel and distributed computing. They enable the sharing, exchange, discovery, and aggregation of resources distributed across multiple administrative domains, organizations and enterprises. To accomplish this, Grids need infrastructure that supports various services: security, uniform access, resource management, scheduling, application composition, computational economy, and accounting. Although several initiatives are engaged in the development of Grid technologies, Grid accounting issues are yet to be addressed. To overcome this limitation, we propose a new infrastructure called GridBank that provides services for accounting. The support of computational economy and accounting services can lead to a self-regulated accountability in Grid computing. This paper presents requirements of Grid accounting and different economic models within which it can operate and proposes a Grid Accounting Services Architecture to meet them. The paper highlights implementation issues with a detailed discussion on the format for various records/databases that the GridBank needs to maintain. It also presents protocols for interaction between the GridBank and various components within Grid computing environments.

关键词： Grid computing Computer architecture distributed computing Concurrent computing Internet Security Resource management Processor scheduling Computer applications Environmental economics

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