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International Conference on Dependable systems and Networks (DSN)

作者： Yinglung Liang Yanyong Zhang A. Sivasubramaniam M. Jette R. Sahoo Electrical & Computer Engineering Department Rutgers University USA Computational Resource Management Group Lawrence Livemore National Laboratory USA Computer Science & Engineering Department Pennslyvania State University USA Exploratory Systems Software Department IBM Thomas J. Watson Research Center USA

The growing computational and storage needs of several scientific applications mandate the deployment of extreme-scale parallel machines, such as IBM's BlueGene/L which can accommodate as many as 128 K processors. One of the challenges when designing and deploying these systems in a production setting is the need to take failure occurrences, whether it be in the hardware or in the software, into account. Earlier work has shown that conventional runtime fault-tolerant techniques such as periodic checkpointing are not effective to the emerging systems. Instead, the ability to predict failure occurrences can help develop more effective checkpointing strategies. Failure prediction has long been regarded as a challenging research problem, mainly due to the lack of realistic failure data from actual production systems. In this study, we have collected RAS event logs from BlueGene/L over a period of more than 100 days. We have investigated the characteristics of fatal failure events, as well as the correlation between fatal events and non-fatal events. Based on the observations, we have developed three simple yet effective failure prediction methods, which can predict around 80% of the memory and network failures, and 47% of the application I/O failures

关键词： Failure analysis Predictive models Production systems Checkpointing Concurrent computing Parallel machines Hardware Runtime Fault tolerant systems Prediction methods

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Semantic-based Grid Resource Discovery and its Integration with the Grid Service Broker

Semantic-based Grid Resource Discovery and its Integration w...

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International Conference on Advanced Computing and Communications (ADCOM)

作者： Thamarai Selvi Somasundaram R.A. Balachandar Vijayakumar Kandasamy Rajkumar Buyya Rajagopalan Raman N. Mohanram S. Varun Department of Information Technology Anna University Chennai India Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC Australia Centre for Development of Advanced Computing Chennai India Centre for Development of Advanced Computing Bangalore India

This paper addresses the need of semantic component in the grid environment to discover and describe the grid resources semantically. We propose semantic grid architecture by introducing a knowledge layer at the top of Gridbus broker architecture and thereby enabling broker to discover resources semantically. The semantic component in the knowledge layer enables semantic description of grid resources with the help of ontology template. The ontology template has been created using Protege-OWL editor for different types of computing resources in the grid environment. The Globus Toolkit's MDS is used to gather grid resource information and Protege-OWL libraries are used to dynamically create knowledge base of grid resources. Algernon inference engine is used for interacting with the knowledge base to discover suitable resources.

关键词： Distributed computing Ontologies Middleware computer architecture computer networks Grid computing Libraries Engines Monitoring Aggregates

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A taxonomy of workflow management systems for Grid computing

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Journal of Grid Computing 2005年第3-4期3卷 171-200页

作者： Yu, Jia Buyya, Rajkumar Grid Computing and Distributed Systems (GRIDS) Laboratory Department of Computer Science and Software Engineering The University of Melbourne Melbourne Vic. Australia

With the advent of Grid and application technologies, scientists and engineers are building more and more complex applications to manage and process large data sets, and execute scientific experiments on distributed resources. Such application scenarios require means for composing and executing complex workflows. Therefore, many efforts have been made towards the development of workflow management systems for Grid computing. In this paper, we propose a taxonomy that characterizes and classifies various approaches for building and executing workflows on Grids. We also survey several representative Grid workflow systems developed by various projects world-wide to demonstrate the comprehensiveness of the taxonomy. The taxonomy not only highlights the design and engineering similarities and differences of state-of-the-art in Grid workflow systems, but also identifies the areas that need further research. © Springer science+Business Media, Inc. 2006.

关键词： Grid computing Resource management Scheduling Taxonomy Workflow management

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Self-stabilizing deterministic TDMA for sensor networks

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2nd International Conference on Distributed Computing and Internet Technology, ICDCIT 2005

作者： Arumugam, Mahesh Kulkarni, Sandeep S. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824

ISBN: (纸本)3540309993

An algorithm for time division multiple access (TDMA) is found to be applicable in converting existing distributed algorithms into a model that is consistent with sensor networks. Such a TDMA service needs to be self-stabilizing so that in the event of corruption of assigned slots and clock drift, it recovers to states from where TDMA slots are consistent. Previous self-stabilizing solutions for TDMA are either randomized or assume that the topology is known upfront and cannot change. Thus, the question of feasibility of self-stabilizing deterministic TDMA algorithm where topology is unknown remains open. In this paper, we present a self-stabilizing, deterministic algorithm for TDMA in networks where a sensor is aware of only its neighbors. This is the first such algorithm that achieves these properties. Moreover, this is the first algorithm that demonstrates the feasibility of stabilization-preserving, deterministic transformation of a shared memory distributed program on an arbitrary topology into a program that is consistent with the sensor network model. © Springer-Verlag Berlin Heidelberg 2005.

关键词： computer networks

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The grid economy

The grid economy

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作者： Buyya, Rajkumar Abramson, David Venugopal, Srikumar Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Vic. 3010 Australia School of Computer Science and Software Engineering Monash University Vic. 3163 Australia

This paper identifies challenges in managing resources in a Grid computing environment and proposes computational economy as a metaphor for effective management of resources and application scheduling. It identifies distributed resource management challenges and requirements of economy-based Grid systems, and discusses various representative economy-based systems, both historical and emerging, for cooperative and competitive trading of resources such as CPU cycles, storage, and network bandwidth. It presents an extensible, service-oriented Grid architecture driven by Grid economy and an approach for its realization by leveraging various existing Grid technologies. It also presents commodity and auction models for resource allocation. The use of commodity economy model for resource management and application scheduling in both computational and data grids is also presented. © 2005 IEEE.

关键词： Computational methods

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An approach to implementing dynamic adaptation in C++

An approach to implementing dynamic adaptation in C++

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2005 Workshop on Design and Evolution of Autonomic Application software, DEAS 2005

作者： Fleming, Scott D. Cheng, Betty H. C. Kurt Stirewalt, R.E. McKinley, Philip K. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East LansingMI48824 United States

ISBN: (纸本)1595930396

This paper describes TRAP/C++, a software tool that enables new adaptable behavior to be added to existing C++ programs in a transparent fashion. In previous investigations, we used an aspectoriented approach to manually define aspects for adaptation infrastructure, which were woven into the original application code at compile time. In follow-on work, we developed TRAP, a transparent shaping technique for automatically generating adaptation aspects, where TRAP/J is a specific instantiation of TRAP. This paper presents our work into building TRAP/C++, which was intended to be a port of TRAP/J into C++. Designing TRAP/C++ required us to overcome two major hurdles: lack of reflection in C++ and the incompatibility between the management of objects in C++ and the aspect weaving technique used in TRAP/J. We used generative programming methods to produce two tools, TrapGen and TrapCC, that work together to produce the desired TRAP/C++ functionality. Details of the TRAP/C++ architecture and operation are presented, which we illustrate with a description of a case study that adds dynamic auditing capabilities to an existing distributed C++ application. Copyright 2005 ACM.

关键词： Middleware

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Real-time specification patterns 05

Real-time specification patterns

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27th International Conference on software engineering, ICSE 2005

作者： Konrad, Sascha Cheng, Betty H. C. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)9781581139631

Embedded systems are pervasive and frequently used for critical systems with time-dependent functionality. Dwyer et al. have developed qualitative specification patterns to facilitate the specification of critical properties, such as those that must be satisfied by embedded systems. Thus far, no analogous repository has been compiled for real-time specification patterns. This paper makes two main contributions: First, based on an analysis of timing-based requirements of several industrial embedded system applications, we created real-time specification patterns in terms of three commonly used real-time temporal logics. Second, as a means to further facilitate the understanding of the meaning of a specification, we offer a structured English grammar that includes support for real-time properties. We illustrate the use of the real-time specification patterns in the context of property specifications of a real-world automotive embedded system. Copyright 2005 ACM.

关键词： Real time systems

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Enabling safe dynamic component-based software adaptation

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Lecture Notes in computer science

作者： Zhang, Ji Cheng, Betty H.C. Yang, Zhenxiao McKinley, Philip K. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)3540289682

Recomposable software enables a system to change its structure and behavior during execution, in response to a dynamic execution environment. This paper proposes an approach to ensure that such adaptations are safe with respect to system consistency. The proposed method takes into consideration dependency analysis for target components, specifically determining viable sequences of adaptive actions and those states in which an adaptive action may be applied safely. We demonstrate that the technique ensures safe adaptation (insertion, removal, and replacement of components) in response to changing external conditions in a wireless multicast video application. © 2005 Springer-Verlag.

关键词： Artificial intelligence

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Critical systems Development Using Modeling Languages (CSDUML'04): Current developments and future challenges (Report on the third international workshop) 1

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UML 2004 Satellite Activities

作者： Jürjens, Jan Fernandez, Eduarde B. France, Robert B. Rumpe, Bernhard Heitmeyer, Constance Software and Systems Engineering Dep. of Informatics TU Munich Germany Dep. of Computer Science and Engineering Florida Atlantic University United States Computer Science Department Colorado State University United States Software Systems Engineering TU Braunschweig Germany Naval Research Laboratory United States

We give a short report on the contributions to and some discussions made and conclusions drawn at the Third International Workshop on Critical systems Development Using Modeling Languages (CSDUML'04). © Sprin... 详细信息

ISBN: (数字)9783540317975

ISBN: (纸本)9783540250814

关键词： computer programming languages

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An integration of Global and Enterprise Grid computing: Gridbus Broker and Xgrid perspective

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4th International Conference on Grid and Cooperative Computing - GCC 2005

作者： De Assunção, Marcos Dias Nadiminti, Krishna Venugopal, Srikumar Ma, Tianchi Buyya, Rajkumar Grid Computing and Distributed Systems Laboratory Australia Department of Computer Science and Software Engineering University of Melbourne Parkville Campus Melbourne Vic. 3010 Australia

ISBN: (纸本)3540305106

In this work, we present two perspectives of Grid computing by using two different Grid middleware as examples: an Enterprise Grid using Xgrid and a Global Grid with Gridbus. We also present the integration of Enterprise and Global Grids by proposing the integration of Gridbus Broker with diverse enterprise Grid middleware including Xgrid, PBS, Condor and SGE. The sample performance results demonstrate the usefulness of this integration effort. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Distributed computer systems

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