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Grid Computing, 2008 9th IEEE/ACM International Conference on

Date Sept. 29 2008-Oct. 1 2008

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Displaying Results 1 - 25 of 64
  • [CD label]

    Publication Year: 2008 , Page(s): c1
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    Freely Available from IEEE
  • Proceedings of the 2008 9th IEEE/ACM international conference on grid computing

    Publication Year: 2008 , Page(s): i
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  • Hub page

    Publication Year: 2008 , Page(s): ii
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  • Session list

    Publication Year: 2008 , Page(s): iii
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  • Table of contents

    Publication Year: 2008 , Page(s): iv - x
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  • Brief author index

    Publication Year: 2008 , Page(s): xi - xv
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  • Detailed author index

    Publication Year: 2008 , Page(s): xvi - xlvi
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  • The end of indexes

    Publication Year: 2008 , Page(s): xlvii
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  • Information for authors

    Publication Year: 2008 , Page(s): xlviii
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  • Frequently asked questions

    Publication Year: 2008 , Page(s): xlix - li
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  • [PDF Reader FAQ and support]

    Publication Year: 2008 , Page(s): lii
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  • General chair's welcome message

    Publication Year: 2008 , Page(s): liii
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  • Program co-chairs’ welcome message

    Publication Year: 2008 , Page(s): liv
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  • Committee

    Publication Year: 2008 , Page(s): lv - lvi
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  • Keynote and invited presenters

    Publication Year: 2008 , Page(s): lvii - lviii
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (735 KB)  

    Provides an abstract for each of the keynote presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • Workflow enactment engine for WSRF-compliant services orchestration

    Publication Year: 2008 , Page(s): 1 - 8
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (221 KB) |  | HTML iconHTML  

    The convergence of grid services more closely to the Web services in the recent years has opened new challenges in designing modern system architectures. Scientific applications based on the grid service architectures can be now viewed as complex processes utilizing available resources so that they co-operate to implement the desired behavior of the system. The workflows became a natural method for describing such processes typically executed on various dispersed resources. Moreover, a number of new specifications and standards is continuously being developed to support the unavoidable and highly demanded interoperability between the services composing the processes. In order to orchestrate the grid services, a workflow engine able to cope with the different standards is highly desirable. The work presented in this paper is carried out in the context of the Globus Incubator project named Workflow Enactment Engine Project. The project was established to provide an easy-to-use and manage workflow enactment engine for grid services orchestration using the WS-BPEL 2.0 language. View full abstract»

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  • Cost and accuracy sensitive dynamic workflow composition over grid environments

    Publication Year: 2008 , Page(s): 9 - 16
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (851 KB) |  | HTML iconHTML  

    A myriad of recent activities can be seen towards dynamic workflow composition for processing complex and data intensive problems. Meanwhile, the simultaneous emergence of the grid has marked a compelling movement towards making datasets and services available for ubiquitous access. This development provides new challenges for workflow systems, including heterogeneous data repositories and high processing and access times. But beside these problems lie opportunities for exploration: The gridpsilas magnitude offers many paths towards deriving essentially the same information albeit varying execution times and errors. We discuss a framework for incorporating QoS in a dynamic workflow composition system in a geospatial context. Specific contributions include a novel workflow composition algorithm which employs QoS-aware apriori pruning and an accuracy adjustment scheme to flexibly adapt workflows to given time restrictions. A performance evaluation of our system suggests that our pruning mechanism provides significant efficiency towards workflow composition and that our accuracy adjustment scheme adapts gracefully to time and network limitations. View full abstract»

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  • DAGMap: Efficient scheduling for DAG grid workflow job

    Publication Year: 2008 , Page(s): 17 - 24
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (175 KB) |  | HTML iconHTML  

    DAG has been extensively used in grid workflow modeling. Since the computational capacity of available grid resources tends to be heterogeneous, efficient and effective workflow job scheduling becomes essential. It poses great challenges to achieve minimum job accomplishing time while maintaining high grid resources utilization efficiency. Based on list scheduling and group scheduling, in this paper we propose a novel static scheduling heuristic, called DAGMap. DAGMap consists of three phases, namely prioritizing, grouping, and independent task scheduling. Three salient features of DAGMap are 1) Task grouping is based on dependency relationships and task upward priority; 2) Critical tasks are scheduled first; and 3) Min-Min and Max-Min selective scheduling are used for independent tasks. The experimental results show that DAGMap can achieve better performance than other previous algorithms in terms of makespan, speedup, and efficiency. View full abstract»

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  • A performance study of grid workflow engines

    Publication Year: 2008 , Page(s): 25 - 32
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (177 KB) |  | HTML iconHTML  

    To benefit from grids, scientists require grid workflow engines that automatically manage the execution of inter-related jobs on the grid infrastructure. So far, the workflows community has focused on scheduling algorithms and on interface tools. Thus, while several grid workflow engines have been deployed, little is known about their performance-related characteristics, and there are no commonly-used testing practices. This situation limits the adoption of the grid workflow engines, and hampers their tuning and their further development. In this work we propose a testing methodology for grid workflow engines that focuses on five characteristics: overhead, raw performance, stability, scalability, and reliability. Using this methodology, we evaluate in a real test environment several middleware stacks that include grid workflow engines, including two based on DAGMan/Condor and on Karajan/Globus. View full abstract»

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  • XMLView: Discover domain specific service description in a UDDI compliant registry

    Publication Year: 2008 , Page(s): 33 - 40
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (130 KB) |  | HTML iconHTML  

    In recent years we have seen the wide adoption of Web services architecture in grid computing. Service discovery, as one of the critical tasks in Web services architecture, is addressed by the UDDI specification. However, UDDI does not gain as much popularity as other Web services specifications such as WSDL and SOAP. At the same time, a number of domain-specific service description models are developed to address the problem of service discovery in specific application domains of grid computing. In this paper, we argue that both UDDI and domain-specific service description models can complement each other, instead of replacing each other. To demonstrate this, we present a system called XMLView that is able to accommodate domain-specific service descriptions and present them in a UDDI compliant view. Queries expressed on the domain-specific model are also supported. View full abstract»

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  • BES++: HPC Profile open source C implementation

    Publication Year: 2008 , Page(s): 41 - 48
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (142 KB) |  | HTML iconHTML  

    While existing resource management software systems each have distinct and advanced capabilities, the way in which a user submits a basic job is generally similar across resource management systems. Recognizing this, the HPC profile working group in the open grid forum (OGF) has recently created a set of standards to define a common Web-services-based interface to resource management systems, thereby significantly enhancing interoperability. We describe the design and implementation of BES++, our open source implementation of the OGF HPC profile. BES++ supports LSF, PBS and SGE resource managers and provides a C interface to further extend this software. In addition to complying with the OGF HPC basic profile specification, we support emerging OGF HPC profile extensions such as file staging and advanced filter. We support job forwarding from one BES++ server to another, thereby enhancing potential transparency to the client. In addition, BES++ currently offers proof-of-concept support for legacy client tools such as qsub by translating legacy scripts into invocations of our BES++ client. We evaluate the effectiveness of BES++ through microbenchmarks, assessment of correctness/interoperability, and ability to parse and translate legacy scripts. To our knowledge, this research is the first to comprehensively report on the challenges, issues, and evaluation of the implementation of the OGF HPC profile specifications. View full abstract»

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  • Experiments with SmartGridSolve: Achieving higher performance by improving the GridRPC model

    Publication Year: 2008 , Page(s): 49 - 56
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (210 KB) |  | HTML iconHTML  

    The paper presents SmartGridSolve, an extension of GridSolve, the programming system for high performance computing. The extension is aimed at higher performance of Grid applications by providing the functionality for collective mapping of a group of tasks on to a network topology that is fully connected. This functionality was achieved with only a minor addition to the GridRPC API. The key to the implementation of collective mapping was to separate the mapping of tasks from their execution which is one atomic operation in the GridRPC model of GridSolve. This paper demonstrates the performance gained by collective mapping with a real-life astrophysical experiment. The presented results show a significant speedup of 2.17 executing this application on a small network of two servers. View full abstract»

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  • g-Eclipse - an integrated framework to access and maintain Grid resources

    Publication Year: 2008 , Page(s): 57 - 64
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (674 KB) |  | HTML iconHTML  

    The g-Eclipse framework provides a general, integrated workbench toolset for grid users, operators and developers. Based on the open source eclipse ecosystem, g-Eclipse supports scientists to interact with grid resources independent of the underlying grid middleware. Its main objective is to deliver an extensible framework for different grid actors, by providing a unified abstraction of the grid. The grid abstraction enables grid application users to access the grid in a desktop-like manner with wizards specific for common use cases; it also provides a set of visual configuration tools to maintain and configure grid resources. View full abstract»

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  • On the importance of migration for fairness in online grid markets

    Publication Year: 2008 , Page(s): 65 - 74
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (252 KB) |  | HTML iconHTML  

    Until recently, only few grid and cluster systems provided preemptive migration (e.g. [4]), which is the ability of dynamically moving computational tasks across machines during runtime. The emergent technology of virtualization (e.g. [10]) provides off-the-shelf support for migration, thus making the use of this feature widely accessible. Existing literature largely neglects the close interrelationship between technical migration and economic fairness. In this paper we take a first step towards closing this gap. We present fairness and quality of service properties for economic online scheduling algorithms. Under mild assumptions we analytically show that it is impossible to achieve these properties without the use of migration. On the other hand, if zero cost migration is used, then these properties can be satisfied. In order to evaluate the effect of migration cost on the scheduling algorithm, we performed extensive empirical analysis based on real data. The results indicate that migration gives designers of economic online schedulers a tremendous pull on the algorithmpsilas fairness properties even in the presence of worst-case realistic migration cost. View full abstract»

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  • Grid resources pricing: A novel financial option based quality of service-profit quasi-static equilibrium model

    Publication Year: 2008 , Page(s): 75 - 84
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (263 KB) |  | HTML iconHTML  

    Use of grid resources has been free so far and a trend is developing to charge the users. The challenges that characterize a grid resource pricing model include the dynamic ability of the model to provide a high satisfaction guarantee measured as quality of service (QoS) - from users perspectives, profitability constraints - from the grid operator perspectives, and the ability to orchestrate grid resources for their availability on-demand. In this study, we design, develop, and simulate a grid resources pricing model that balances these constraints. We employ financial option theory and treat the grid resources as real assets to capture the realistic value of the grid compute commodities. We then price the grid resources by solving the finance model. We discuss the results on pricing of compute cycles based on the actual data of grid usage pattern obtained from the WestGrid and the SHARCNET. We extend and generalize our study to any computational grid. View full abstract»

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