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SCHEDULING PARALLEL TASKS WITH INTRA-COMMUNICATION OVERHEAD IN A grid computing environment

INTERNATIONAL JOURNAL OF INNOVATIVE computing INFORMATION AND CONTROL 2011年第2期7卷 881-896页

作者： Lin, Jiann-Fu Takming Univ Sci & Technol Dept Management Informat Syst Taipei 11451 Taiwan

With the improvements in wide-area network performance and powerful computers, it is possible to integrate a large number of distributed machines belonging to different organizations as a single system, for example, a grid computing environment. A grid computing environment involves cooperation and sharing resources among distributed machines. Users may dispatch their tasks to remote computing resources instead of just computing locally. Hence, task scheduling is an important issue in a grid computing environment. If a task is processed in parallel in a parallel machine, infra-communication overhead is inevitable and is an important factor affecting the task's processing time. Thus, instead of a free communication assumption, this paper takes intra-communication overhead into account. According to the models of parallel task and intra-communication overhead, the problem of scheduling independent parallel tasks with intra-communication overhead in a grid computing environment is investigated. In this paper, a heuristic algorithm for this problem is proposed, and the performance bounds of the heuristic algorithm for scheduling parallel tasks in the environment with message passing machines and in the environment with shared memory machines are derived as 9/2 and 5/2 respectively. Although this problem is mainly about assigning tasks to a grid computing environment, however, by proper transformation it can be applied to the workforce assignment problem.

关键词： Parallel task Intra-communication overhead NP-hard Performance bound grid computing environment

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Implicit information load sharing policy for grid computing environment

Implicit information load sharing policy for grid computing ...

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8th International Conference on Advanced Communication Technology

作者： Sanguandikul, N Nupairoj, N Chulalongkorn Univ Dept Comp Engn Bangkok 10330 Thailand

ISBN: (纸本)8955191294

grid technology has been proposed as a computing framework for gaining access to very large distributed computing resources. In order to fully utilize these resources, we need load sharing policy that can address the unique characteristics in grid infrastructure. In this paper, we extend our implicit load sharing policy by introducing the movable master node concept to hide an effect of the high latency in grid computing environment. The simulation results show that our proposed policy can achieve better parallel runtime in grid computing environment by moving the job pool to the proper master node.

关键词： load sharing policy grid computing environment

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New methodologies in computational nanoscience facilitated by the grid computing environment

New methodologies in computational nanoscience facilitated b...

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International Conference on MEMS, NANO and Smart Systems

作者： Hirata, F Natl Inst Nat Sci Inst Mol Sci Okazaki Aichi 4448585 Japan

ISBN: (纸本)0769523986

The nanoscience explores the materials which are about 10/sup -9/ times smaller in size. It is the quantum mechanics (or mechanics) that governs the NANO world. A material treated in the nanoscience consists of an infinite or homogeneous system and finite or heterogeneous systems: for example, a protein (finite) in water (infinite) and a molecular wire (finite) connected to metal surface (infinite). It will be essential to combine the "heterogeneous" methodologies in number of different ways to create new theories or computational methods to investigate "heterogeneous" materials in the NANO world. We have been developing a new computational environment which is called grid. A newly developed method or computer program in a particular research node will be integrated into the collaborative research to be shared in "real time" by the group members scattered among the heterogeneous grid nodes. One of our concerns in the computational nanoscience is self-organization processes in solution such as micelle (or vesicle) formation and protein folding, in which "solvent" plays a crucial role.

关键词： grid computing nanotechnology natural sciences computing grid computing environment collaborative research computational methods computational nanoscience computer program finite system group members heterogeneous materials heterogeneous methodologies he

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Agent-based access control security in grid computing environment

Agent-based access control security in grid computing enviro...

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IEEE International Conference on Networking, Sensing and Control

作者： Lin, J Wang, C Guo, YH Beijing Univ Posts & Telecommun Res Ctr Intelligence Sci & Tech Dept Engn Beijing 100876 Peoples R China

ISBN: (纸本)0780388127

This paper presents a framework of access control security in grid computing environment. Considering the dynamic characteristic and multi-management domains in grid computing, I design a model of combining inner-domain and cross-domain access control mechanism based on the intelligent agent and basic network access control technology. It's a try on setting a unified grid security strategy.

关键词： access control security grid computing environment agent IADS

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PERFORMANCE ANALYSIS AND DISCUSSION ON A HEURISTIC APPROACH FOR SCHEDULING MULTIPROCESSOR TASKS IN A grid computing environment

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INTERNATIONAL JOURNAL OF INNOVATIVE computing INFORMATION AND CONTROL 2010年第12期6卷 5451-5462页

作者： Lin, Jiann-Fu Takming Univ Sci & Technol Dept Management Informat Syst Neihu 11451 Taiwan

The problem considered in this paper is motivated by recent studies in scheduling tasks in a grid computing environment. A grid infrastructure is a virtual organization that integrates a large number of distributed resources and high performance computing capabilities into a super service, which can be viewed as an agreement to share resources among independent organizations. Users may dispatch their tasks to the grid computing environment and use remote computing resources instead of computing locally. Hence, the issues of resource management and tasks scheduling are essential in a grid computing environment. As the problem of nonpreemptively scheduling independent multiprocessor tasks in a grid computing environment is NP-hard, we propose a heuristic algorithm for such a problem. We evaluate the performance of the heuristic algorithm not only by mathematical analysis, but also implementing the heuristic algorithm and exploring phenomena from the experimental results. The derived performance bound of the heuristic algorithm falls between (2-1/P) and (3-2/P), where P is the total number of processors in a grid computing environment. To explain the performance analysis of the heuristic algorithm, we implement the heuristic algorithm and discuss the observed phenomena from the experimental results.

关键词： Scheduling Multiprocessor task Performance bound grid computing environment

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CAD-grid system for accelerating product development

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FUJITSU SCIENTIFIC & TECHNICAL JOURNAL 2004年第2期40卷 224-231页

作者： Yamashita, T Nakamura, T Noguchi, H Fujitsu Ltd Kawasaki Kanagawa Japan

Recently, there have been demands for greater functional diversity and higher performance in the information technology (IT) infrastructure and mobile communication products. As a result, the complexity and scale of product design in the product development phase have increased. In addition, development periods need to be reduced so products can be marketed sooner. These requirements have rapidly increased the need to efficiently simulate and analyze in order to achieve optimum designs and verification. Also, grid computing technology is coming into practical use as a new way of using geographically distributed computer resources connected to a network. This technology is based on advances achieved in high-performance computing and broadband networking. The authors have constructed the "CAD-grid" grid computing system to quickly perform computationally intense simulations in the product development phase. This system has been used to simulate a mobile communication system and confirm its effects. This paper describes the grid computing environment of CAD-grid, its structure, the system simulation to which CAD-grid was applied, and the application results. This paper also describes the future development plan for the CAD-grid system.

关键词： .system simulation simulate Product Development computer resources mobile communication system grid computing environment

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A generic formal model for the comparison and analysis of distributed job-scheduling algorithms in grid environment

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JOURNAL OF PARALLEL AND DISTRIBUTED computing 2019年 132卷 331-343页

作者： Ben Hafaiedh, Imene Univ Tunis El Manar UTM Higher Inst Comp Sci Tunis ISI Dept Software Engn & Informat Syst Tunis Tunisia

Nowadays, high-end Systems consist of thousands of individual devices which are in general heterogeneous. grid computing environments are an example of high-end systems which are composed of many diverse and heterogeneous resources distributed within multiple geographical areas. The performance of such systems depends considerably on job scheduling and resource allocation algorithms. Indeed, to improve the global throughput of these environments, effective and efficient load balancing algorithms are fundamentally important. In this paper, we propose a completely distributed formal model for the description of grid architecture. Our model, is then parameterized to describe different job-scheduling algorithms in a completely parallel architecture. In particular, we focus on the modeling and description of distributed load-balancing algorithms. To reach this purpose, we define a set of parallel schedulers communicating together to achieve a given load-balancing policy. To show the applicability of our approach, we propose to specify and compare different well-known job-scheduling policies in grid environments. The formal verification of different properties of the studied protocols has been performed automatically using Model-checking and a set of performance analysis results are also provided. (C) 2019 Elsevier Inc. All rights reserved.

关键词： Formal verification Distributed scheduling grid computing environment Load balancing algorithms

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High performance grid computing for detecting gene-gene interactions in genome-wide association studies

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INTERNATIONAL JOURNAL OF grid AND DISTRIBUTED computing 2012年第1期5卷 33-44页

作者： Hmida, M. Ben Haj Slimani, Y. Fac Sci Tunis Dept Comp Sci Comp Sci Tunis Tunisia Inst Appl Sci & Technol Sousse Sousse Tunisia Fac Sci Tunis Dept Comp Sci Tunis Tunisia

The huge amount of biological information implies a great challenge for data analysis, particularly for combinatorial methods such as Multifactor Dimensionality Reduction. This method can be computationally intensive, especially when more than ten polymorphisms need to be evaluated. The grid is a promising architecture for genomics problems providing high computing capabilities. In this paper, we describe a framework for supporting the MDR method on grid environments. This framework helps biologists to automate the execution of multiple tests of gene-gene interactions detection. To evaluate the efficiency of the proposed framework, we conduct experiments on the grid5000. A grid infrastructure distributed in nine sites around France, for research in large-scale parallel and distributed systems. compute-intensive.

关键词： Genomics gene-gene interactions distributed computing grid computing environment

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gridFlow for earth observation data processing

GridFlow for earth observation data processing

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International Conference on grid computing and Applications

作者： Aloisio, G Cafaro, M Carteni, G Epicoco, I Quarta, G Raolil, S Univ Lecce Ctr Adv Computat Technol ISUFI I-73100 Lecce Italy

ISBN: (纸本)9781932415575

In the Earth Observation (EO) field, the processing of remotely sensed data often involves several tasks in which the data are processed by several applications. Moreover, the integration of data coming from different sensors can produce new processed images rich of prominent information about a specific topic of interest, like geology, pollution monitoring, civil application. Data coming from a specific source can contain complementary information with respect to other sources. In such a context it easy to understand how grid computing environment for EO data processing, find natural description of the user's jobs as a workflow. In this paper we present an integrated workflow management system for EO data processing that includes a web based user interface, a resource manager, optimized for EO applications, that interact with underlying services like Information and Monitoring Systems provided by the grid middleware.

关键词： gridflow workflow earth observation systems grid computing environment

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Security issues in National High Performance computing environment

Security issues in National High Performance Computing Envir...

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4th International Conference on Parallel and Distributed computing, Applications and Technologies (PDCAT 2003)

作者： Wang, JB He, DK Yang, SY SW Jiaotong Univ Sch Comp & Commun Engn Chengdu Peoples R China

ISBN: (纸本)0780378407

It is the purpose of this paper to present some practical security issues related to National High Performance computing environment (NHPCE), the computational grid. Based on the security requirements of NHPCE we discuss some existing distributed security technologies we used and point out why they are not enough. Then the key issues of NHPCE and its corresponding solutions to these problems are analyzed. Lastly we put forward our final solution.(8).

关键词： grid computing environment distributed security authentication authorization proxy

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