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8th IEEE international conference on Computational Intelligence and computing Research (IEEE ICCIC)

作者： Pingale, Amruta Bhosale, V. K. DIEMS Dept Elect & Telecommun Aurangabad Maharashtra India

ISBN: (纸本)9781509066216

Use of renewable and non-renewable sources for distributed energy generation is more efficient than using only one of them standalone. For such distribution system stand-alone grid is considered having no co-ordination with conventional grid The proposed system is connecting outputs of different renewable sources to grid via Radio Frequency (RF) communication module. The actual working mechanism of RF communication module is to match phase angle of AC output generated from renewable sources, and in turn combining matching power information of these outputs into stand-alone smart grid Matching phase angles of different outputs from renewable sources, plays extremely crucial role, otherwise grid and other circuitry will get hit by unforeseen damage and casualties may occur. Furthermore, this paper demonstrates the research in area of energy grid with prototype model being build and related findings are shared along with insightful statistically processed real time system data analysis. This paper proposes more in depth insights into subject matter with continuation to our previous paper [1].

关键词： Distribution energy generation Renewable energy sources RF communication stand-alone grid

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A case study on grid performance modeling

A case study on grid performance modeling

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

作者： Lu, Baochuan Apon, Amy Dowdy, Larry Robinson, Frank Hoffman, Doug Brewer, Denny Univ Arkansas Comp Sci & Comp Engn Fayetteville AR 72701 USA Vanderbilt Univ Elect Engn & Comp Sci Nashville TN 37235 USA Acxiom Corp Conway AR USA

ISBN: (纸本)9780889866386

The purpose of this case study is to develop a performance model for an enterprise grid for performance management grid capacity planning(1). The target environment includes,grid applications such as health-care arid financial services where the data is located primarily within the resources of a worldwide corporation. The approach is to build a discrete event simulation model for a representative work-flow grid. Five work-flow classes, found using a customized k-means clustering algorithm characterize the workload of the grid. Analyzing the gap between the simulation arid measurement data validates the model. The case study demonstrates that the simulation model can be used to predict the V a given a workload forecast. The,rid system performance model is also used to evaluate alternative scheduling strategies. The simulation model is flexible arid easily incorporates several system details.

关键词： grid computing performance modelling capacity planning discrete-event simulation JavaSim case study

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Literature Survey on Various Scheduling Approaches in grid computing Environment 1

Literature Survey on Various Scheduling Approaches in Grid C...

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1st IEEE international conference on Power Electronics, Intelligent Control, and Energy Systems (ICPEICES)

作者： Setia, Heena Jain, Abhilasha Giani Zail Singh Campus Coll Engn & Technol CSE Dept Bathinda India

ISBN: (纸本)9781467385879

grid computing, was developed by computer scientists in the mid 1990's based on ease of use and access geographically distributed resources which are dynamic and heterogeneous for solving difficult problems. These distributed resources are owned by different organizations. grid computing provides a framework for parallel/distributed computing. For developing a grid, low-level services (secure access management of resources) and high-level services (application development and scheduling) should be developed. Dynamic nature of resources in grid architecture is the reason for varied load on resources. So for better management of resources, the scheduling concept comes into account. Scheduling means order of jobs which satisfy the metrics like user's satisfaction and completion time & so on. Better scheduling policy in grid computing improves performance, cost of computation, load balancing and increase reliability and availability of resources. This paper presents various approaches for allocation of resources in grid computing environment. This paper ends up with summary of some existing scheduling approaches by taking into account various metrics used to verify usefulness of existing technique.

关键词： grid computing Load Balancing Makespan Utilization Scheduling User Deadline Latency Cost

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WSDL grid binding

WSDL grid binding

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international conference on Parallel and distributed Processing Techniques and Applications

作者： Podesta, R Migliardi, M Univ Genoa DIST I-16145 Genoa Italy

ISBN: (纸本)1892512459

The two main threads in distributed computing that recently show noticeable progress are grid computing and the development of Web-based services. It is our opinion that the adoption of the standards fostered by the web-service community could improve the level of usability and interoperability of grid systems and lead to the development of metacomputing systems based on reusable, interoperable components. Up to now the adoption of Web Services in grid projects has been limited to ancillary services and has never penetrated the core computational model that is still tightly tied to MPI and PVM. This is mainly due to the fact that Web Services use by default the SOAP protocol which is extremely ill suited to computational science applications. In this paper we show how we leveraged the Web Service Invocation Framework to develop a new high performance binding based on XDR coding.

关键词： metacomputing grid computing web services WSIF

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GMount: Build Your grid File System on the Fly 08

GMount: Build Your Grid File System on the Fly

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9th IEEE/ACM international conference on grid computing

作者： Dun, Nan Taura, Kenjiro Yonezawa, Akinori Univ Tokyo Grad Sch Informat Sci & Technol Bunkyo Ku Tokyo Japan

ISBN: (纸本)9781424425785

By GMount, non privilege users can easily and quickly build ad-hoc distributed file systems on any machines reachable via SSH. In the wide-area grid environments, it can scale to hundreds of nodes and works with NAT or firewall. Given the network topology, the metadata operations of file system are locality-aware. GMount can be effortlessly deployed in multiple clusters without superuser privilege. In this paper, we present the design and implementation of GMount, and shows its viability in a large scale grid platform with over 300 nodes spread across 11 clusters.

关键词： File systems Fuses Pediatrics Servers Fires Construction industry Network topology

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Flexible grid portlets to access multi globus toolkits

Flexible grid portlets to access multi globus toolkits

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5th international conference on grid and Cooperative computing (GCC 2006)

作者： Wang, Xiao Dong Yang, Xiaobo Allan, Rob CCLRC Daresbury Lab CCLRC E Sci Ctr Warrington WA4 4AD Cheshire England

ISBN: (纸本)0769526950

grid systems at different levels have already been constructed around the world to provide users an easy way of accessing/integrating distributed computing, data and other resources. Portal layer is on the top of typical three layers in grid system and provides presentation interface to the end-users. Portlets as executing components in portal layer usually access a specific grid middleware rather than multi grid middlewares. A new grid system is implemented in this paper. It follows typical three layer structure of grid system. By using UDDI registry, grid Portlets in the portal layer can select services interfaces and find out suitable grid middleware. Abstraction and Business Logics which are Java CoG-based in service layer will map to suitable Globus Toolkit middlewares. The end-users can use the grid Portlets to access GT2, GT3 or GT4 middleware.

关键词： distributed computer systems

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Large-scale DNA sequence assembly by using computing grid

Large-scale DNA sequence assembly by using computing grid

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5th international conference on grid and Cooperative computing (GCC 2006)

作者： Fang, Xiaoyong Luo, Zhigang Wang, Zhenghua Ding, Fan Natl Univ Def Technol Natl Lab Parallel & Distributed Proc Changsha 410073 Hunan Peoples R China

ISBN: (纸本)0769526950

DNA sequence assembly is a fundamental part of biological computing. However, most of the large-scale sequence assemblies require intensive computing power and huge storage. To speed up the assembly process, we here propose a method for large-scale DNA sequence assembly by using computing grid The central idea of our method is to first cluster the input of fragment set into many non-intersected subsets using k-mers and then to distribute them to all nodes of the grid-computing system. Our method has accuracy of more than 92% on the test data sets under the simulated grid-computing system but costing shorter time and lower storage. Our method can efficiently process large-scale DNA sequence assembly by taking advantage of huge storage and computing capacity of computing gird.

关键词： DNA sequences

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Activity pre-scheduling for run-time optimization of grid workflows

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JOURNAL OF SYSTEMS ARCHITECTURE 2008年第9期54卷 883-892页

作者： Tretola, Giancarlo Zimeo, Eugenio Univ Sannio Res Ctr Software Technol I-82100 Benevento Italy

The capability to support resource sharing between different organizations and high-level performance are noteworthy features of grid computing. Applications require significant design effort and complex coordination of resources to define, deploy and execute components on heterogeneous and often unknown resources. A common trend today aims at diffusing workflow management techniques to reduce the complexity of grid systems through model-driven approaches that significantly simplify application design through the composition of distributed services often belonging to different organizations. With this approach, the adoption of efficient workflow enactors becomes a key aspect to improve efficiency through run-time optimizations, so reducing the burden for the developer, who is only responsible of defining the functional aspects of complex applications since he/she has only to identify the activities that characterize the application and the causal relationships among them. This paper focuses on performance improvements of grid workflows by presenting a new pattern for workflow design that ensures activity pre-scheduling at run-time through a technique that generates fine-grained concurrency with a couple of concepts: asynchronous invocation of services and continuation of execution. The technique is implemented in a workflow enactment service that dynamically optimizes process execution with a very limited effort for application developer. (C) 2008 Elsevier B.V. All rights reserved.

关键词： grid computing grid workflow run-time optimization asynchronous invocation

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Dynamic role and context-based access control for grid applications

Dynamic role and context-based access control for grid appli...

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6th international conference on Parallel and distributed computing, Applications and Technologies (PDCAT 2005)

作者： Yao, HB Hu, HP Huang, BH Li, RX Huazhong Univ Sci & Technol Coll Comp Wuhan 430074 Peoples R China

ISBN: (纸本)0769524052

Despite the recent advances in access control approaches applicable to grid computing, there remain issues that impede the development of effective access control for grid applications. Amongst them are the lack of context-based models for access control, and reliance on identity or capability-based access control schemes. In this paper, we propose RCBAC model which extends the RBAC with context constraints. The RCBAC mechanisms dynamically grant and adapt permissions to users based on a set of contextual information collected from the grid environments, while retaining the advantages of RBAC model.

关键词： distributed computer systems

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A scheduling mechanism on OGSA

A scheduling mechanism on OGSA

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2nd international conference on Computer Networks and Mobile computing

作者： Jin, L Tong, WQ Wang, B Zong, YW Shanghai Univ Sch Engn & Comp Sci Shanghai 200072 Peoples R China

ISBN: (纸本)0769520332

grid is a collection of distributed resources available over a local or wide area networks that appear to an end user or application as large virtual system. The implementation of individual application on grid promises performance benefits over that achievable at a single site for many resource-intensive application. However, with the emergency of OGSA, scheduling issues face new challenges in the new grid environment. Although higher-level abstraction makes resources encapsulated in a uniform fashion, it also leads to slower response in the process of execution. A new scheduling mechanism is needed to exploit characteristics of OGSA. In this paper, we put forward an effective instance-based application scheduling mechanism, implemented in Globus Toolkit 3. Good performance, best resource management and well lifecycle control in this mechanism can also be guaranteed.

关键词： grid computing scheduling open systems resource allocation scheduling mechanism distributed resources local area network wide area network OGSA open grid services architecture Globus Toolkit 3 resource management lifecycle control

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