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13th IEEE international Enterprise distributed Object computing conference (EDOC 2009)

作者： Smanchat, Sucha Ling, Sea Indrawan, Maria Monash Univ Fac Informat Technol Melbourne Vic 3004 Australia

ISBN: (纸本)9781424455638

grid has become an infrastructure to support scientific research due to its ability to provide high-performance computing environment. In order to automate scientific process, workflow has been used to orchestrate tasks to be executed in grid environment. Hence, the management of the workflow execution, especially the scheduling of workflow tasks in grid under high resource competition situation, becomes an important issue to improve the quality of service. In this paper, we propose a workflow scheduling algorithm based on resource competition among the tasks in the workflow. Our preliminary result is compared with the existing Min-Min algorithm to demonstrate the advantage of our algorithm in situations where there is a high degree of resource competition in the grid workflow.

关键词： grid quality of service workflow scheduling resource competition

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Fixed Sequencer Ring Topology for grid: A group communication system for complex systems in a Wide Area Network

Fixed Sequencer Ring Topology for Grid: A group communicatio...

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international conference on Multimedia computing and Systems (ICMCS)

作者： Farid, Lassoued Ridha, Bouallegue Carthage Univ Innov COM Lab Higher Sch Commun Tunis SupCom Tunis Tunisia

ISBN: (纸本)9781479938247

Complex Systems are more and more vulnerable to failures on account of their growing complexity and distribution. This problem motivates the need for a fault tolerance mechanism in such systems. Hence, we focus on distributed algorithmic review that make the task of failure detection and repair much easier. Our paper highlights this approach. Indeed, it focuses on the problem of reliable duplication mechanism on grid environments. As a first task, we define a new group communication system extending the FSR protocol which is developed by the INRIA/EPFL. Because of his interesting results in a cluster of homogenous machines, this work consists on adapting this system to the grid environments. Whereas, the following part of our paper, shows architecture of a fault-tolerant distributed system. This work is interesting for building fault-tolerant systems distributed at the grid scale. Indeed, FSRG shows interesting results in terms of bandwidth and latency, not far from cluster results.

关键词： FSR protocol fault tolerance complex system WAN

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grid computing Security Mechanisms: State-of-The-Art

Grid Computing Security Mechanisms: State-of-The-Art

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international conference on Multimedia computing and Systems

作者： Bendahmane, A. Essaaidi, M. El Moussaoui, A. Younes, A. Abdelmalek Essaadi Univ Fac Sci Tetouan Morocco

ISBN: (纸本)9781424437566

Until recently, application developers could often assume a target environment that was homogeneous, reliable, secure, and centrally managed. However, with the advent of collaborative computing and data sharing, more and more new modes of interaction have evolved resulting in the need and use of distributed resources. Work within this community has led to the development of grid technologies [1], which address precisely these problems. In grid computing, heterogeneous resources distributed geographically are virtualized as a unified whole. grid computing, as a result, provides enormous opportunities in terms of resource sharing, maximization of resource utilization and virtualization of resources. Because of its immense potential, not only the scientific community, but also the IT enterprise communities are excited about its prospect. A recent survey ranked grid computing as sixth on priority lists for IT spending among industry professionals [5]. With this much interest, security becomes necessary to provide authentication, authorization, resource protection, secure communication, data confidentiality, data integrity, trust policies management, user key and credential management, service protection, and network security. This paper provides an insight classification of the different mechanisms and methods of security in grid computing environment, and also discusses the solutions for each category and its limitation in order to define the real problems in grid computing security. In our approach, we categorize the security solutions into Resources Level, Service Level, Authentication & Authorization Level, Information Level, and Management Level Solutions.

关键词： grid computing Security Sandboxing Virtualization Authentication Authorization GSI Certificates Intrusion Detection Credentials

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Design and implementation of a distributed content-based notification broker for WS-Notification 06

Design and implementation of a distributed content-based not...

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7th IEEE/ACM international conference on grid computing

作者： Quiroz, Andres Parashar, Manish Rutgers State Univ Dept Elect & Comp Engn TASSL 94 Brett Rd Piscataway NJ 08854 USA

ISBN: (纸本)9781424403431

We describe an implementation based on the WS-Notification (WSN) specification for Publish/Subscribe communication which provides a distributed, content-based notification service. The implementation is based on a distributed hashtable (DHT) built on a structured overlay of peer nodes. The entire system acts as a notification broker, so that notification producers and consumers that make use of the network can achieve loosely-coupled communication with a decentralized, scalable service. We develop and evaluate self-optimizing behavior built to reduce notification traffic within the network.

关键词： Wireless sensor networks Web services Peer to peer computing Protocols Standards development Subscriptions Scalability Telecommunication traffic Communication standards Standards publication

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distributed solutions for ubiquitous computing and ambient intelligence

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FUTURE GENERATION COMPUTER SYSTEMS-THE international JOURNAL OF grid computing AND ESCIENCE 2014年 34卷 94-96页

作者： Ochoa, Sergio F. Lopez-de-Ipina, Diego Univ Chile Dept Comp Sci Santiago Chile Univ Deusto DeustoTech INTERNET MORElab Bilbao Spain

This special issue of the Future Generation Computer Systems (FGCS) journal is devoted to papers selected from the 6th international conference on Ubiquitous computing and Ambient Intelligence (UCAmI 2012) and the 4th international Workshop on Ambient Assisted Living (IWAAL 2012), held in Vitoria-Gasteiz, Spain, on 3–5 December 2012. On the one hand, UCAmI focuses on the ubiquitous computing and ambient intelligence research, which represent a new generation of user-centred computing solutions, aiming to find new ways to obtain a better integration of Information and Communication Technology (ICT) in everyday life devices and activities. On the other hand, IWAAL focuses on Ambient Assisted Living (AAL), an important application domain of ambient intelligence that aims to contribute with ICT research applied to enabling assistive living environments.

关键词： Generation computing Communication Ambient intelligence Ubiquitous computing Information and communication technology Communication Research international conference

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OddCI-Ginga: A Platform for High Throughput computing Using Digital TV Receivers

OddCI-Ginga: A Platform for High Throughput Computing Using ...

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ACM/IEEE 13th international conference on grid computing (grid)

作者： Costa, Rostand Bezerra, Diogo Henrique D. Vieira, Dienert A. Brasileiro, Francisco Sousa, Denio Mariz Souza Filho, Guido Fed Univ Paraiba UFPB Digital Video Applicat Lab LAVID Joao Pessoa Paraiba Brazil Univ Fed Campina Grande Distribut Syst Lab Campina Grande Brazil

ISBN: (纸本)9780769548159

OddCI is a new architecture for distributed computing that is, at same time, flexible and highly scalable. Previous works have demonstrated the theoretical feasibility of implementing the proposed architecture on a digital television (DTV) network, but without taking into consideration any practical issues or details. This paper describes the implementation of a proof of concept for the architecture, called OddCI-Ginga, using a testbed based on DTV receivers compatible with the Brazilian DTV System. Performance tests using real broadcast transmission and the return channel demonstrate the feasibility of the model and its usefulness as a platform for efficient and scalable distributed computing.

关键词： High throughput computing bag-of-tasks distributed computing infrastructures broadcast networks digital tv set-top-boxes

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Towards Determining the Optimal Application of distributed Generation for grid Integration 9

Towards Determining the Optimal Application of Distributed G...

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9th international conference on Soft computing and Machine Intelligence (ISCMI)

作者： Moloi, K. Langa, H. Vaal Univ Technol Dept Electr Engn Vanderbijlpark South Africa

ISBN: (纸本)9798350320886

The energy supply framework has transformed over the recent time from tradition to a more flexible energy topology. This has resulted in the introduction of using distributed generation technologies to improve the sustainability of energy supply. However, the introduction of distributed generation for grid-integration has technical disadvantages, such as increase in power and voltage losses. In this paper, a technique based on discrete wavelet transform (DWT) and the genetic algorithm ( GA) is proposed to determine the optimal location and size of the DGs to be connected into the grid for power loss minimisation and voltage improvement. The technique is tested using the 33 and 69 IEEE test bus system. The results obtained show that the power losses are significantly reduced with an increase in the voltage profile.

关键词： discrete wavelet transform distributed generation genetic algorithm optimisation renewable energy

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GODIS: Ontology-based resource discovery and integration in grids

GODIS: Ontology-based resource discovery and integration in ...

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18th IASTED international conference on Parallel and distributed computing and Systems

作者： Li, Juan Radu, Iulian Vuong, Son T. Univ British Columbia 2366 Main Mall Vancouver BC V6T 1Z4 Canada

ISBN: (纸本)9780889866386

This paper presents GODIS (grid Ontological Directory and Integration System) a comprehensive architecture for resource sharing and discovery in large-scale grids, where nodes integrate local ontologies to expand semantic knowledge of shared grid resources. A peer-to-peer based DHT overlay is used to facilitate the formation of semantic communities on a large scale. Inside communities, ontological knowledge is integrated between nodes, and a DHT overlay is used for knowledge dissemination and discovery. This framework architecture improves interoperability among grid participants and aids efficient resource discovery through an expressive query language.

关键词： grid semantic web resource discovery and P2P

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A distributed Dynamic grid Scheduler for Mixed Tasks

A Distributed Dynamic Grid Scheduler for Mixed Tasks

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3rd IEEE international Advance computing conference (IACC)

作者： Kovvur, Ram Mohan Rao Ramachandram, S. Kadappa, Vijayakumar Govardhan, A. Vasavi Coll Engg Dept CSE Hyderabad Andhra Pradesh India Osmania Univ Dept CSE Hyderabad 500007 Andhra Pradesh India BMS Dept MCA Bangalore Karnataka India JNTUH Dept CSE Hyderabad Andhra Pradesh India

ISBN: (纸本)9781467345286

We consider scheduling of bag of independent mixed tasks (Hard, firm and soft) in a distributed dynamic grid environment. Recently, a general distributed scalable grid scheduler (GDS) for independent tasks was proposed to maximize successful schedule percent in an error-free grid environment. However, GDS did not consider constraint failure of task during execution due to resource overload, which leads to limited successful schedule percent. In this paper, we propose a novel distributed dynamic grid scheduler for mixed tasks (DDGS-MT), which takes into consideration the constraint failure of task during execution due to resource overload. The proposed scheduler incorporates migration and resume fault tolerant mechanisms for computational and communication intensive tasks respectively. The proposed scheduler shows improved performance in terms of successful schedule percent and makespan in comparison with GDS. The results of our exhaustive simulations experiments demonstrate the superiority of DDGS over GDS scheduler.

关键词： distributed Dynamic grid and Scheduler

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Bandwidth and computing Resources Provisioning for grid Applications and Services

Bandwidth and Computing Resources Provisioning for Grid Appl...

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IEEE international conference on Communications (ICC 2009)

作者： Filali, A. Hafid, A. S. Gendreau, M. Univ Montreal NRL Montreal PQ H3C 3J7 Canada Univ Montreal CIRRELT Montreal PQ H3C 3J7 Canada

ISBN: (纸本)9781424434343

Applications using grid computing infrastructure usually require resources allocation to satisfy their Quality of Service (QoS) requirements. Given that the grid infrastructure is a set of computing resources geographically distributed, the support of grid applications requires the allocation of computing resources and bandwidth to enable communication among these resources. The objective is to accommodate as many applications as possible while still satisfying their requirements. Ideally, we would like to accommodate a given grid application using a set of computing resources (e.g., one server) that are not geographically distributed (e.g., in the same LAN);however, this is not always possible. Indeed, to increase the probability of accommodating grid applications, we may need to use computing resources scattered all over the network;in this case, bandwidth allocation is required to enable communication among these resources. In this paper, we propose an optimization model that enables the "simultaneous" allocation of computing resources and bandwidth for grid application while maximizing the number of grid applications being accommodated. A heuristic is proposed to solve the model with an acceptable response time;simulations show that the proposed approach outperforms existing classical approaches.

关键词： Bandwidth grid Quality of Service Integer programming Heuristics

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