检索结果-南通市图书馆

A novel resource co-allocation model with constraints to budget and deadline in computational grid

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2009年第3期16卷 458-466页

作者：胡志刚肖鹏 School of Information Science and Engineering Central South University School of Software Central South University

To address the issue of resource co-allocation with constraints to budget and deadline in grid environments, a novel co-allocation model based on virtual resource agent was proposed. The model optimized resources deployment and price scheme through a three-side co-allocation mechanism, and applied queuing system to model the work of grid resources for providing quantitative deadline guarantees for grid applications. The validity and solutions of the model were presented theoretically. Extensive simulations were conducted to examine the effectiveness and the performance of the model by comparing with other co-allocation policies in terms of deadline violation rate, resource benefit and resource utilization. Experimental results show that compared with the three typical co-allocation policies, the proposed model can reduce the deadline violation rate to about 3.5% for the grid applications with constraints to budget and deadline. Also, the system benefits can be increased by about 30% compared with the those widely-used co-allocation policies.

关键词： co-allocation computational grid grid economy queuing theory deadline

A scheduling strategy for finite element analysis on the computational grid

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2005年第3期11卷 268-273页

作者： Weng Chuliang（翁楚良） Lu Xinda Yue Ying Department of Conlputer Science and Engineering Shanghai Jiaotong University Shanghai 200030 P.R. China CAD Engineering Center Southwest Jiaotong University Chengdu 610031 P.R. China

The computational grid provides a promising platform for the deployment of various high-performance computing applications. A grid system consists of heterogeneous resource domains, while the computational tasks of finite element analysis may differ in demand of computing power. The cost-effective utilization of resources in the grid can be obtained through scheduling tasks to optimal resource domains. Firstly, a cost-effective scheduling strategy is presented for finite element applications. Secondly, aiming at the conjugate gradient solver stemming from finite element analysis, a performance evaluation formula is presented for determining optimal resouree domains, which is derived from phase parallel model and takes the heterogeneous characteristic of resource domains into account. Finally, experimental results show that the presented formula delivers a good estimation of the actual execution time, and indicate that the presented formula can be used to determine optimal resource domains in the grid environment.

关键词： computational grid scheduling algorithm performance evaluation conjugate gradient method

Task-and-role-based access-control model for computational grid

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Chongqing University 2007年第4期6卷 249-255页

作者：龙涛 College of Computer Science Huazhong University of Science and Technology

Access control in a grid environment is a challenging issue because the heterogeneous nature and independent administration of geographically dispersed resources in grid require access control to use fine-grained policies. We established a task-and-role-based access-control model for computational grid (CG-TRBAC model), integrating the concepts of role-based access control (RBAC) and task-based access control (TBAC). In this model, condition restrictions are defined and concepts specifically tailored to Workflow Management System are simplified or omitted so that role assignment and security administration fit computational grid better than traditional models; permissions are mutable with the task status and system variables, and can be dynamically controlled. The CG-TRBAC model is proved flexible and extendible. It can implement different control policies. It embodies the security principle of least privilege and executes active dynamic authorization. A task attribute can be extended to satisfy different requirements in a real grid system.

关键词： computational grid task-and-role-based access control grid security role assignment

A New Method for Out-of-core Applications on computational grids

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2003年第4期9卷 88-90页

作者：唐剑琪 Fang Binxing Hu Mingzeng School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 P.R.China

More and more out of core problems that involve solving large amounts of data are researched by scientists. The computational grid provides a wide and scalable environment for those large scale computations. A new method supporting out of core computations on grids is presented in this paper. The framework and the data storage strategy are described, based on which an easy and efficient out of core programming interface is provided for the programmers.

关键词： computational grid out of core computation out of core array MPI

Multisite co-allocation scheduling algorithms for parallel jobs in computing grid environments

在线全文

学校读者我要写书评

暂无评论

Science in China(Series F) 2006年第6期49卷 906-926页

作者： ZHANG Weizhe FANG Binxing HU Mingzeng LIU Xinran ZHANG Hongli GAO Lei School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China National Computer Network Emergency Response Technical Team/Coordination Center of China Beijing 100029 China Beijing University of Posts and Telecommunications Beijing 100876 China

Cooperation of multi-domain massively parallel processor systems in computing grid environment provides new opportunities for multisite job scheduling. At the same time, in the area of co-allocation, heterogeneity, network adaptability and scalability raise the challenge for the international design of multisite job scheduling models and algorithms. It presents multisite job scheduling schema through the introduction of multisite job scheduling model and the performance model under the grid environment. It introduces two job multisite and cooperative scheduling models and algorithms with the core of the optimal and greedy-heuristic resource selection strategies. Meanwhile, compared with single and multisite cooperative scheduling models and algorithms introduced by Sabin, Yahyapour and other persons, the validity and advance of the scheduling model and the performance model herein are proved.

关键词： computational grid parallel job multisite co-allocation resource selection resource reservation and job backfilling.

DCCS:A General-Purpose Distributed Cryptographic Computing System

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2007年第1期12卷 46-50页

作者： JIANG Zhonghua LIN Dongdai XU Lin LIN Lei State Key Laboratory of Information Security Institute ofSoftware Chinese Academy of Sciences Beijing 100080 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

Distributed cryptographic computing system plays an important role since cryptographic computing is extremely computation sensitive. However, no general cryptographic computing system is available. grid technology can give an efficient computational support for cryptographic applications. Therefore, a general-purpose grid-based distributed computing system called DCCS is put forward in this paper. The architecture of DCCS is simply described at first. The policy of task division adapted in DCCS is then presented. The method to manage subtask is further discussed in detail. Furthermore, the building and execution process of a computing job is revealed. Finally, the details of DCCS implementation under Globus Toolkit 4 are illustrated.

关键词： cryptography distributed computing execution plan computational grid

RT-grid:A Real-Time,Fault-Tolerant grid Model

在线全文

学校读者我要写书评

暂无评论

RT-GRID:A Real-Time,Fault-Tolerant Grid Model

Reusing Legacy Applications for grid Computing

The Fourth International Conference on Parallel and Distributed Computing, Applications and Technologies

作者： Deqing Zou Hai Jin Song Wu Jianhua Sun Internet and Cluster Computing Center Huazhong University of Science and Technology

＜正＞computational grids bring together various distributed resources belonging to different organizations, and provide a high-performance computing environment. However,there is another application category,with the requirement of time constraints and fault tolerance, which needs to be processed in such a high-performance *** is necessary to incorporate real-time, fault-tolerant properties into computational *** propose a real-time,fault-tolerant grid model,called RT-grid,in this *** discuss the differences of core components between RT-grid and computational *** such issues arose from real time and fault tolerance,we study it at grid system level,and propose a monolithic architecture.

关键词： Real time Fault tolerance Resource reservation computational grid

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Reusing Legacy Applications for Grid Computing