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2nd international conference on Computer and Automation Engineering (ICCAE)

作者： Chopra, Inderpreet Singh, Maninder Thapar Univ Comp Sci & Engn Dept Patiala Punjab India

ISBN: (纸本)9781424455690

With the introduction of grid computing, complexity of large scale distributed systems has become unmanageable because of the manual system adopted for the management these days. Due to dynamic nature of grid, manual management techniques are time-consuming, in-secure and more prone to errors. This leads to new paradigm of self-management through autonomic computing to pervade over the old manual system to begin the next generation of grid computing. In this paper, we have discussed the basic concept of grid computing and the need for grid to be autonomic. A comparative analysis of different grid middleware has been provided to show the absence of autonomic behavior in current grid architecture. To conclude the discussion, we have mentioned the areas where research work has been lacking and what we believe the community should be considering.

关键词： Autonomic computing Globus N1GE6 Condor Alchemi

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Bag of Tasks Rescheduling within Real grid Environments: Different Approaches

Bag of Tasks Rescheduling within Real Grid Environments: Dif...

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21st Euromicro international conference on Parallel, distributed, and Network-Based Processing (PDP)

作者： Tomas, Luis Caminero, Blanca Carrion, Carmen Univ Castilla La Mancha Dept Comp Syst Albacete Spain

ISBN: (纸本)9780769549392;9781467353212

Providing Quality of Service (QoS) in grid environments is still a challenging task because advance reservation of resources is not always possible. By contrast, scheduling the use of resources in advance is a way of enhancing the provision of QoS, without physically reserving them. However, in a grid scenario fragmentation may appear as a logic result of the allocation process, leading to poor resource utilization. To try to avoid that problem a rescheduling technique has been developed and applied periodically depending on the existing fragmentation. Nevertheless, reallocating jobs in an optimal way is an NP-Hard problem. Consequently, simple and scalable ways of distributing and allocating those jobs into the resources are presented and evaluated in a real grid environment involving heterogeneous computing resources distributed across different national organizations, highlighting the benefits of using them to increase the resource usage.

关键词： computational complexity grid computing processor scheduling resource allocation task analysis

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An IDE Framework for grid Application Development 08

An IDE Framework for Grid Application Development

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9th IEEE/ACM international conference on grid computing

作者： Kurniawan, Donny Abramson, David Monash Univ Fac Informat Technol Monash E Sci & Grid Engn Lab Clayton Vic 3800 Australia

ISBN: (纸本)9781424425785

grid computing enables the aggregation of a large number of computational resources for solving complex scientific and engineering problems. However, writing, deploying, and testing grid applications over highly heterogeneous and distributed infrastructure are complex and error prone. A number of grid integrated development environments (IDEs) have been proposed and implemented to simplify grid application development. This paper presents an extension to our previous work on a grid IDE in the form of a software framework with a well-defined API and an event mechanism. It provides novel tools to automate routine grid programming tasks and allow programmable actions to be invoked based on certain events. Its system model regards resources as first-class objects in the IDE and allows tight integration between the execution platforms and the code development process. We discuss how the framework improves the process of grid application development.

关键词： Programming Software Object oriented modeling Middleware Computer architecture Java Writing

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Zigzag: local-information-based self-optimizing routing in virtual grid networks

Zigzag: local-information-based self-optimizing routing in v...

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33rd IEEE international conference on distributed computing Systems (ICDCS)

作者： Takatsu, Shusuke Ooshita, Fukuhito Kakugawa, Hirotsugu Masuzawa, Toshimitsu Osaka Univ Grad Sch Informat Sci & Technol Osaka Japan

ISBN: (纸本)9780769550008

In this paper, we present a local-informationbased self-optimizing routing protocol Zigzag in virtual grid networks. A virtual grid network is obtained by virtually dividing a wireless network into a grid of geographical square regions called cells, and is used in MANETs and sensor networks to reduce energy consumption. A single node is selected as a router at each cell and inter-cell communication is realized by using the routers. Other nodes in the cell have no responsibility for inter-cell communication and can become inactive to save energy consumption. We consider maintenance of an inter-cell communication path to a destination node from its source node. When the destination node moves to a cell next to the current one, the path can be simply updated by extending it to the next cell. But, if the destination node moves around the network, the path becomes redundantly long and needs to be shortened. In this paper, we propose a self-optimizing routing protocol Zigzag in virtual grid networks, which can transform any given inter-cell path to a shortest (or minimum-hop) one by repeatedly applying local updates on the path. The routers locally and asynchronously update the path based only on local information and require no global information of the path such as the locations of the destination and the source nodes. We also show that the convergence time to a shortest path from any given path P is O(|P|) in the synchronous execution where |P| is the length (or the number of hops) of P.

关键词： Wireless network Virtual grid network Routing protocol Self-optimization Local information

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distributed computing systems:: P2P versus grid computing alternatives 1

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international conference on Systems, computing Science and Software Engineering

作者： Cabani, A. Ramaswamy, S. Itmi, M. Al-Shukri, S. Pecuchet, J. P. INSA Rouen LITIS Lab EA4051 F-76131 St Aignan France Univ Arkansas Dept Commun Sci Fayetteville AR 72701 USA

ISBN: (数字)9781402062681

ISBN: (纸本)9781402062674

grid and P2P systems have become popular options for large-scale distributed computing, but their popularity has led to a number of varying definitions that are often conflicting. Taxonomies developed to aid the decision process are also quite limited in their applicability. While some researchers have argued that the two technologies are converging 111, in this paper, we develop a unified taxonomy along two necessary distributed computing dimensions and present a framework for identifying the right alternative between P2P and grid computing for the development of distributed computing applications.

关键词： grid computing

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Dynamic, context-aware, least-privilege grid delegation 07

Dynamic, context-aware, least-privilege Grid delegation

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8th IEEE/ACM international conference on grid computing

作者： Ahsant, Mehran Basney, Jim Johnsson, Lennart Royal Inst Technol Ctr Parallel Comp Valhallavagn 79 S-10044 Stockholm Sweden Univ Illinois Natl Ctr Supercomp Appl Urbana IL 61801 USA

ISBN: (纸本)9781424415595

Performing delegation in large scale, dynamic and distributed environments with large numbers of shared resources is more challenging than inside local administrative domains. In dynamic environments like grids, on one hand, delegating a restricted set of rights reduces exposure to attack but also limits the flexibility and dynamism of the application;on the other hand, delegating all rights provides maximum flexibility but increases exposure. This issue has not yet been adequately addressed by current grid security mechanisms and is becoming a very challenging and crucial issue for future grid development. Therefore, providing an effective delegation mechanism which meets the requirements of the least privilege principle is becoming an essential need. Furthermore, we are witnessing a phenomenal increase in the automation of organizational tasks and decision making, as well as the computerization of information related services, requiring automated delegation mechanisms. In order to meet these requirements we introduce an Active Delegation Framework which extends our previous work on on-demand delegation, making it context-aware. The framework provides a just-in-time, restricted and dynamic delegation mechanism for grids. In this paper we describe the development of this framework and its implementation and integration with the Globus Toolkit.

关键词： Concurrent computing distributed computing grid computing Application software Large-scale systems Automation Decision making Resource management Information security Runtime

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Design optimization of laminated composite structures using distributed grid resources

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COMPOSITE STRUCTURES 2005年第3-4期71卷 435-438页

作者： Kere, P Lento, J Tampere Univ Technol Inst Appl Mech & Optimizat FIN-33101 Tampere Finland Ctr Comp Sci FIN-02101 Espoo Finland

Parameter studies, genetic algorithms and Monte Carlo type calculations are examples of pleasantly parallel computational tasks. Pleasantly parallel computational tasks can be effectively calculated in computer clusters or grids. In this work, we consider a weight minimization problem of a laminated composite structure in the post-buckling region. The design variables are the number of layers and the layer orientations given in a discrete set of allowable angles for layer orientations. Optimization is carried out using a deterministic search process, where the lay-up configurations are generated iteratively in the design space from the selected design points of the population at the preceding cycle. Computation is performed using Nordugrid grid computing platform. In this work, we briefly go through some general grid concepts and the use of grid in optimization of laminated composite structures. (C) 2005 Elsevier Ltd. All rights reserved.

关键词： nonlinear multi-criteria optimization laminated composite structures grid computing

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grid-based asynchronous replica exchange 07

Grid-based asynchronous replica exchange

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8th IEEE/ACM international conference on grid computing

作者： Li, Zhen Parashar, Manish Rutgers State Univ Dept Elect & Comp Engn Piscataway NJ 08854 USA

ISBN: (纸本)9781424415595

Replica exchange is a powerful sampling algorithm and can be effectively used for applications such as simulating the structure, function, folding, and dynamics of proteins and drug design. However, grid-based implementations of the algorithm present significant challenges due to its synchronization and communication requirements. This paper presents an asynchronous formulation of the replica exchange algorithm and the design and implementation of a grid-based asynchronous replica exchange engine (GARE). GARE is based on CometG, a decentralized computational infrastructure for Desktop grid environments that provides a scalable communication and interaction substrate and presents a virtual semantically specialized shared space abstraction. It enables the dynamic and asynchronous interactions required by the algorithm to be simply expressed and efficiently implemented. The design and implementation of GARE/CometG and the replica exchange simulations that it enables are presented. Experimental evaluations using the PlanetLab [1] wide-area test bed as well as a campus grid environment are presented.

关键词： grid computing Temperature Computational modeling Algorithm design and analysis Protein engineering Application software Drugs distributed computing Power engineering and energy Sampling methods

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Fog computing Solution for distributed Anomaly Detection in Smart grids 15

Fog Computing Solution for Distributed Anomaly Detection in ...

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15th international conference on Wireless and Mobile computing, Networking and Communications (WiMob)

作者： El-Awadi, Radwa Fernandez-Vilas, Ana Diaz Redondo, Rebeca P. Univ Vigo Informat Technol & Commun Vigo Spain Univ Vigo Telemat Engn Vigo Spain Univ Vigo Informat & Comp Lab Vigo Spain Univ Vigo AtlantTIC Res Ctr Vigo Spain

ISBN: (纸本)9781728133164

Smart grid is considered entirely indispensable in the next generation of electricity networks since shifting from the conventional to the cyber-physical power grids;relying on the Advanced Metering Infrastructures (AMIs) where a bidirectional communication with the utility provider supports improved reliability and satisfaction of customers' needs. Moreover, Smart grid promises self-healing, i.e., automatic and quick detection and analysis of faults and failures. Unfortunately, the new grid turns into an information system and as such, it becomes vulnerable to cyber-risks and cyber-threats so that specific cyber-attacks can be directed to either Smart grids or Microgrids (small-scale form of grids that contain distributed generators and power-storage units). In this new scenario, it is highly required to be cyber-resilient and to detect anomalies in the Smart grid such as misusage, system faults or cyber-security incidents. Although anomalies could be detected in a holistic approach over a Cloud computing infrastructure, this research paper proposes Fog computing model to detect the anomalous patterns in the electricity consumption data by means of collaboration of distributed devices at the edge of Smart grid network enough in advance (reducing communication latencies). The implementation of the proposed solution follows the Open-Fog Reference Architecture (RA) and a Microgrid on premises of the university of Vigo for a preliminary result as a proof of concept.

关键词： Smart grid Microgrids Smart meters Cyber-threats Incidents Cyber-Security Fog computing distributed-anomalies Open Fog RA

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Automated Performance Control in a Virtual distributed Storage System 08

Automated Performance Control in a Virtual Distributed Stora...

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9th IEEE/ACM international conference on grid computing

作者： Huang, H. Howie Grimshaw, Andrew S. George Washington Univ Dept Elect & Comp Engn Washington DC 20052 USA Univ Virginia Dept Comp Sci Charlottesville VA 22903 USA

ISBN: (纸本)9781424425785

Storage demand in large organizations has grown rapidly in the last few decades. In this paper, we describe Storage@desk, a new virtual distributed storage system that utilizes a large number of distributed machines to provide storage services with quality of service guarantees. We present the Storage@desk architecture and core components. The machines on which Storage@desk relies exist in an environment that is unreliable and dynamic. We utilize replication to provide high levels of availability and reliability. Our evaluation reveals that Storage@desk achieves better read and write performance compared to CIFS As Storage@desk serves clients and applications on shared storage resources, it is crucial to ensure predictable storage access even when the workloads are unknown a priori. To this end, we take a control theoretic approach for automated performance control in Storage@desk. Given a reference value, the feedback controller is able to effectively regulate service requests to virtual storage resources under various scenarios.

关键词： Servers Databases Bandwidth Quality of service Sensors Actuators Organizations

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