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36th International Conference on Parallel Processing in Xi'an, ICPP

作者： Jin, Hai Qi, Li Wu, Song Luo, Yaqin Dai, Jie Cluster and Grid Computing Lab. Service Computing Technology and System Huazhong University of Science and Technology

ISBN: (纸本)076952933X

Any mistaken maintenance for the complicated and distributed grid can bring unpredictable disaster. Here we focus on the system availab.lity issues caused by service dependencies during the maintenance in grid. A novel mechanism, called Cobweb Guardian, is proposed in this paper. It provides multiple granularities (service-, container-, and node-level) maintenance for service components in grid. By using the Cobweb Guardian, grid administrators can execute the maintaining task safely in runtime with high availab.lity. The evaluation results show that our proposed dependency-aware maintenance can make the grid management more automatic and availab.e. © 2007 IEEE.

关键词： Maintenance

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Ontology based grid information interoperation

Ontology based grid information interoperation

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21st International Conference on Advanced Information Networking and ApplicationsWorkshops/Symposia, AINAW'07

作者： Di, Sheng Jin, Hai Li, Shengli Chen, Ling Qi, Li Wang, Chengwei Services Computing Technology and System Lab. Cluster and Grid Computing Lab. Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)0769528473

A series of problems arises with the emergence and fast development of grid. Among all the problems, one of them is how to smoothly connect heterogeneous grid platforms. There are a number of ways to solve this problem and the relatively more efficient one is using ontology. Based on this method, we focus on alleviating semantic inconsistency of various platforms and designing a novel ontology. This ontology is depicted by Resource Description Framework (RDF) and transacted by adapters. Finally, we test our method and analyze its performance. © 2007 IEEE.

关键词： grid computing

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DHT based collab.rative multimedia streaming and caching service

DHT based collaborative multimedia streaming and caching ser...

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TENCON 2005 - 2005 IEEE Region 10 Conference

作者： Zuoning, Yin Hai, Jin Cluster and Grid Computing Lab. Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)0780393112

Multimedia streaming and video on demand (VoD) services are among those hottest applications over the Internet. Traditional client/server pattern is stumbled due to the lack of scalab.lity and limitation of service capacity. Peer-to-Peer paradigm has been introduced to solve these issues. The key idea is that peers not only receive multimedia stream but also serve multimedia data to others. In this paper, we present a novel scheme that builds a multimedia streaming and caching service on a distributed hash table (DHT) based overlay. We adopt DHT to establish a decentralized caching service. The location information of cached segments is distributed among different peers and the information about segments from the same video is organized into an application-level multicast group. We also propose a cache replace algorithm on each peer. In our simulation, our design achieves good scalab.lity with a low service reject rate. Besides, good load balance is also achieved as well as desired quality-of-service.

关键词： Distributed computer systems

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GPE4CGSP: Interoperability between heterogeneous grid infrastructures

GPE4CGSP: Interoperability between heterogeneous grid infras...

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2007 Asian Technology Information Program's (ATIP's) 3rd Workshop on High Performance computing in China - Solution Approaches to Impediments for High Performance computing, CHINA HPC'07

作者： Song, Wu Kang, Xiao Li, Qi Cluster and Grid Computing Lab. Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781595939036

In this paper we present GPE4CGSP, which targets the interoperability between GPE (grid Programming Environment) and CGSP (Chinagrid Support Platform). The web services technique and gridftp data transfer protocol are used to implement the interoperation between GPE and CGSP. grid application can be deployed to CGSP through GPE. Without modification, GPE client can freely visit and use the resources in CGSP. Typically, end users can submit jobs to CGSP through GPE application client. GPE4CGSP provides one feasible way for the interoperability of heterogeneous grid infrastructures. The evaluation proves that the job execution time of GPE4CGSP is less than that of GPE4GTK. © 2007 ACM.

关键词： Interoperability

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A Novel routing scheme for paired peers in P2P network

A Novel routing scheme for paired peers in P2P network

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2007 Asian Technology Information Program's (ATIP's) 3rd Workshop on High Performance computing in China - Solution Approaches to Impediments for High Performance computing, CHINA HPC'07

作者： Liao, Xiaofei Services Computing Technology and System Lab Cluster and Grid Computing Lab. Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781595939036

Peer-to-Peer (P2P) networks have been shown to be a promising approach to provide instant voice services over the Internet for its potential high scalab.lity. However, for one paired peers, how to efficiently transmit voice data among peers in such networks remains a major challenge. Hereby this paper proposed some hybrid routing schemes for P2P transmitting system, which include improved random detection algorithm, delay binary tree search algorithm, AS-aware discovery algorithm. With the help of these novel routing schemes, we can choose the correct algorithm to transfer media data, in small size but low delay, among peers in P2P network. Simulations show that these new routing strategies achieve obvious effect. © 2008 ACM.

关键词： Trees (mathematics)

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An authorization mechanism for resource space model

An authorization mechanism for resource space model

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3rd International Conference on Semantics, Knowledge, and grid, SKG 2007

作者： Zhu, Yuan Xing, Yunpeng Hunan Knowledge Grid Lab. Hunan University of Science and Technology Hunan China China Knowledge Grid Research Group Key Lab of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sciences 100080 Beijing China

ISBN: (纸本)0769530079

Authorization mechanism is an effective technique of access control. In this paper, we construct a multidimensional authorization space for RSM with the guidance of the methodology of RSM design. This authorization space permits both positive and negative authorizations and supports exceptions and strong enforcement as well as the temporal constraints on the authorizations. For the sake of efficiency and convenience we extend the representation of object in GRANT command. © 2007 IEEE.

关键词： Authorization

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Research on Architecture of grid-Based Simulation Platform

Research on Architecture of Grid-Based Simulation Platform

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Japan-China Joint Workshop on Frontier of Computer Science and Technology (FCST)

作者： Song Wu Li Qi Hai Jin Heng He Key Lab of Cluster and Grid Computing Key Lab of Service Computing Technology and System Ministry of Education Huazhong University of Science and Technology Wuhan Hubei China

This paper proposes a grid-based Distributed Simulation Platform (GDSP). It is designed to break the limitation of legacy simulation supporting platform and to meet new requirements from large-scale, distributed, and complicated systems. Simulation services are encapsulated by using web services technology, and they are basic elements of GDSP. With grid technology, GDSP enables users to share, access, and operate remote resource transparently. It is also easier to organize and manage simulation resources. GDSP improves the capability of fault tolerance and provides mechanism of using simulation resources securely. The research result shows that through this management mechanism, multiple users can share and monitor RTI resources, and manage the simulation collab.ratively and effectively. At the same time, the impact on real time of RTI caused by the system is minimum.

关键词： Computational modeling Resource management Web services Computer architecture Application software Large-scale systems Fault tolerance Distributed computing Context modeling Runtime

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grid information integration scheme based on virtual client access mode

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Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) 2007年第SUPPL. 2期35卷 8-11页

作者： Sun, Aobing Jin, Hai Zheng, Ran Zhang, Qin Services Computing Technology and System Key Lab. College of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China Cluster and Grid Computing Key Lab. College of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

VCA (virtual client access) based grid information integration strategy is proposed in this paper that brings forward one efficient application framework with loosely coupled architecture. It encapsulates the virtual clients that are realized based on the API of the information systems as grid services to enable the grid can access the information systems as real client. VCA mode can be combined with local access control and task management seamlessly, and solve the resource conflicts between grid and local users so as to support the information sharing and cooperation widely and efficiently. The experiment shows that VCA modes can support the information sharing and cooperation widely and efficiently.

关键词： Information management

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Demonstration of a task-flow based aircraft collab.rative design application in optical grid 33

Demonstration of a task-flow based aircraft collaborative de...

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2007 33rd European Conference and Exhibition of Optical Communication, ECOC 2007

作者： Wang, Zhengyu Guo, Wei Sun, Zhenyu Jin, Yaohui Sun, Weiqiang Hu, Weisheng Lin, Xinhua Wu, Min-You Liu, Hong Fu, San Yuan, Jun Qiao, Chunming State Key Lab. on Fiber-Optic Local Area Networks and Advanced Optical Communication systems Shanghai JiaoTong University Shanghai200240 China Grid Computing Center Shanghai JiaoTong University Shanghai200240 China Institute of Aerospace Science and Technology Shanghai JiaoTong University Shanghai200240 China Shanghai Supercomputer Center Shanghai201203 China Computer Science and Engineering State University of New York BuffaloNY14260 United States

One task-flow scheduler has been designed to optimally allocate resources for a task-flow based Aircraft Collab.rative Design Application in Optical grid. This scheduler and application has been deployed on an Optical... 详细信息

ISBN: (纸本)9783800730421

关键词： Scheduling

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A new approach to hide policy for automated trust negotiation

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1st International Workshop on Security, IWSEC 2006

作者： Hai, Jin Zhensong, Liao Deqing, Zou Weizhong, Qiang Cluster and Grid Computing Lab. Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)3540476997

Automated trust negotiation (ATN) is an important approach to establish trust between strangers through the exchange of credentials and access control policies. In practice, access control policy may contain sensitive information. The negotiation process becomes complicated when the access control policy is designed complex in order to avoid information leakage. Furthermore, if the access control policy has conflicts or cycles, normal negotiation strategies often fail. In this paper, a new approach to hide access control policy is proposed based on the study on the existing problems. In the approach, the policy consistency is checked so as to detect policy conflicts. 0-1 table is used to implement it as well as discover minimal credential-set. Meanwhile, a practical example shows that the approach is suitable and can effectively protect sensitive information in access control policy. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Information technology

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