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17th international conference on computing in High Energy and Nuclear Physics (CHEP)

作者： Vanderster, D. C. Brochu, F. Cowan, G. Egede, U. Elmsheuser, J. Gaidoz, B. Harrison, K. Lee, H. C. Liko, D. Maier, A. Moscicki, J. T. Muraru, A. Pajchel, K. Reece, W. Samset, B. Slater, M. Soroko, A. Tan, C. L. Williams, M. CERN European Org Nucl Res CH-1211 Geneva 23 Switzerland Univ Cambridge Dept Phys Cambridge CB3 0HE England Univ Edinburgh Sch Phys Particle Phys Expt Grp Edinburgh EH9 3JZ Midlothian Scotland Imperial Coll London Dept Phys London SW7 2AZ England Univ Munich D-80539 Munich Germany Univ Birmingham Sch Phys & Astron Birmingham B15 2TT W Midlands England Natl Inst Subatomaire Fys NIKHEF NL-1098 XG Amsterdam Netherlands Austrian Acad Sci Inst High Energy Phys A-1050 Vienna Austria Univ Oslo Dept Phys Expt Particle Phys Grp NO-0316 Oslo Norway Univ Oxford Dept Phys Oxford OX1 3PU England

Ganga has been widely used for several years in ATLAS, LHCb and a handful of other communities. Ganga provides a simple yet powerful interface for submitting and managing jobs to a variety of computing backends. The tool helps users configuring applications and keeping track of their work. With the major release of version 5 in summer 2008, Ganga's main user-friendly features have been strengthened. Examples include a new configuration interface, enhanced support for job collections, bulk operations and easier access to subjobs. In addition to the traditional batch and grid backends such as Condor, LSF, PBS, gLite/EDG a point-to-point job execution via ssh on remote machines is now supported. Ganga is used as an interactive job submission interface for end-users, and also as a job submission component for higher-level tools. For example GangaRobot is used to perform automated, end-to-end testing of distributed data analysis. Ganga comes with an extensive test suite covering more than 350 test cases. The development model involves all active developers in the release management shifts which is an important and novel approach for the distributed software collaborations. Ganga 5 is a mature, stable and widely-used tool with long-term support from the HEP community.

关键词： High energy physics

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Special Section: Third IEEE international conference on e-Science and grid computing

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FUTURE GENERATION COMPUTER SYSTEMS-THE international JOURNAL OF grid computing-THEORY METHODS AND applications 2009年第4期25卷 444-445页

作者： Chiu, Kenneth Fox, Geoffrey C. SUNY Binghamton Dept Comp Sci Binghamton NY 13902 USA Indiana Univ Community Grids Lab Sch Informat Bloomington IN 47404 USA

The third IEEE international conference Computer Society's Technical Committee for Scalable computing (TCSC) brought together leading international and interdisciplinary research communities, developers, and users of e-science applications and IT technologies. The conference was organized by the Center for Development of Advanced computing (C-DAC). The themes included were enabling technologies, applications, workflow's, service-oriented architectures, resource management, scientific data management, sensors and instruments, and programming paradigms. The total of 206 papers from the continents of Asia, Australia, Europe, North and South America were received out of which the top 60 papers were selected for presentation in one of the sessions in the conference. Some technology areas covered included grid infrastructure, grid steering, grid monitoring, workflow and grid programming, scheduling, resource discovery and allocation, security and algorithms.

关键词： e-science grid computing Cyberinfrastructure

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Distributed computing and Internet Technology - 6th international conference, ICDCIT 2010, Proceedings

Distributed Computing and Internet Technology - 6th Internat...

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6th international conference on Distributed computing and Internet Technology, ICDCIT 2010

ISBN: (纸本)3642116582

The proceedings contain 28 papers. The topics discussed include: transactional memory today;maintaining coherent views over dynamic distributed data;semantic frameworks-meanings in the architecture;fuzzy-controlled source-initiated multicasting (FSIM) in ad hoc networks;a tool to determine strategic location and ranges of nodes for optimum deployment of wireless sensor network;an efficient hybrid data-gathering scheme in wireless sensor networks;introducing dynamic ranking on web pages based on multiple ontology supported domains;template-based process abstraction for reusable inter-organizational applications in RESTful architecture;enhancing the hierarchical clustering mechanism of storing resources' security policies in a grid authorization system;performance analysis of a renewal input bulk service queue with accessible and non-accessible batches;and secure dynamic identity-based remote user authentication scheme.

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Socio-Natural Thought Semantic Link Network A Method of Semantic Networking in the Cyber Physical Society

<i>Socio-Natural Thought Semantic Link Network</i> A Method ...

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24th IEEE international conference on Advanced Information Networking and applications (AINA)

作者： Zhuge, Hai Chinese Acad Sci Inst Comp Technol Knowledge Grid Res Grp Key Lab Intelligent Informat Proc Beijing 100190 Peoples R China

ISBN: (纸本)9780769540184

Humans have been recognizing, establishing and making use of various relations consciously and unconsciously since the formation of human society. Waving and maintaining various relations accompany everyone's life. Humans' social behaviors create or emphasize relations. Various networks evolve with the development of society. Some relational networks gradually become independent of individuals' life during evolution so that they become a part of knowledge and culture sharable cross generations. The study of social relations trace back to the age of Laozi (576-BC), Confucius (551-479 BC), Thales (624 BC-546 BC) and Socrates (469 BC-399 BC). The formal definition of general relation traces to the invention of set theory in 1874. Humans have intelligence to observe and participate in social processes, to think, and to know the effect of establishing a relation. Humans can also actively select appropriate relations and persons according to requirement, situation and social rules. Machines are obviously limited in these abilities. Various graph-based models have been used to connect resources in the cyber space. Two issues are fundamental: (1) machines know little relation in human society and the nature, data structures in machines are for machines to process not for humans to read, so it is not realistic to expect machines to discover social and natural laws and resolve relevant issues without human instruction;and, (2) machines are hard to know the effect of establishing and making use of relations, and to explain computing result according to society and nature. The cause is that machines do not have any worldview. Connecting various networks and machines with nature, society, and even human minds can create a new world where individuals have semantic images that can enhance mutual understanding. The semantic images can be constructed by a Semantic Link Network SLN consisting of nodes with rich semantics, semantic links between nodes, and rules for reasoning, influen

关键词： cyber physical society cyber physical system human-level AI semantics semantic link network

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A scalable queuing service based on an in-memory data grid

A scalable queuing service based on an in-memory data grid

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IEEE international conference on E-Business Engineering, ICEBE 2010

作者： Wang, Yuan Chen, Han Wang, Bin Min Xu, Jing Lei, Hui IBM China Research Lab. Building 19 Z Park 8 Dongbeiwang West Road Beijing 100193 China IBM Thomas J. Watson Research Center 19 Skyline Dr. Hawthorne NY 10532 United States

ISBN: (纸本)9780769542270

A cloud-based, highly consumable queuing service must provide extreme scalability, flexible models of consistency, and high availability in the presence of network partitions. CAP theorem states that at most two of the three properties - Consistency, Availability, and Partition Tolerance - can be achieved at the same time for any shared data system. This paper presents the design and implementation of a scalable cloud-based queuing service, named SilverDove Queuing Service (SDQS). SDQS offers two kinds of consistency levels to applications: the first guarantees exactly-once and no-order delivery and the second exactly-once and in-order delivery. Meanwhile SDQS provides high availability and network partition tolerance. SDQS is designed and developed on top of IBM WebSphere eXtreme Scale, an in-memory data grid system. Performance experiments are carried out in a cloud computing environment and the results show that SilverDove has linear scalability with both of the consistency levels. © 2010 IEEE.

关键词： Scalability

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Advances in grid computing: Tenfold Acceleration of computing Using the Internet/grid

Advances in Grid Computing: Tenfold Acceleration of Computin...

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international conference on Computer Modeling and Simulation, UKSIM

作者： Frank Zhigang Wang Centre for Grid Computing Cambridge-Cranfield High Performance Computing Facility UK

ISBN: (纸本)9781424466146;9780769540160

Professor Wang and his group have developed a grid computing platform, which supports universally network applications with a speedup of 2-25. Its associated protocol is the first of its kind worldwide. Best of all, this platform requires no changes in the way users work with their applications since it conforms the existing IT infrastructures. During his presentation, he is going to show a demo of using this platform to accelerate applications, ranging from IBM DB2, MySQL, Office, Firefox Web Browser, Google Earth to Media Player. This work has won an ACM/IEEE Super computing Award.

关键词： grid computing Acceleration Internet Earth Access protocols Computer networks High performance computing Computer architecture Distributed decision making IP networks

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An adaptive task-level fault-tolerant approach to grid

An adaptive task-level fault-tolerant approach to Grid

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10th IEEE international conference on High Performance computing and Communications

作者： Wu, Yongwei Yuan, Yulai Yang, Guangwen Zheng, Weimin Tsinghua Univ Dept Comp Sci & Technol Tsinghua Natl Lab Informat Sci & Technol Beijing 100084 Peoples R China

A strong failure recovery mechanism handling diverse failures in heterogeneous and dynamic grid is so important to ensure the complete execution of long-running applications. Although there have been various efforts made to address this issue, existing solutions either focus on employing only one single fault-tolerant technique without considering the diversity of failures, or propose some frameworks which cannot deal with various kinds of failures adaptively in grid. In this paper, an adaptive task-level, fault-tolerant approach to grid is proposed. This approach aims at handling quite a complete set of failures arising in grid environment by integrating basic fault-tolerant approaches. Moreover, this paper puts forward that resource consumption (not received enough attention) is also an important evaluation metric for any fault-tolerant approach. The corresponding evaluation models based on mean execution time and resource consumption are constructed to evaluate any fault-tolerant approach. Based on the models, we also demonstrate the effectiveness of our approach and illustrate the performance gains achieved via simulations. The experiments based on a real grid have been made and the results show that our approach can achieve better performance and consume less resource.

关键词： grid Task-level Fault-tolerant Resource consumption Mean execution time

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Generating parallel random sequences via parameterizing EICGs for heterogeneous computing environments

Generating parallel random sequences via parameterizing EICG...

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2010 international conference on Computational Science and Its applications, ICCSA 2010

作者： Chi, Hongmei Cao, Yanzhao Department of Computer and Information Sciences Florida A and M University Tallahassee FL 32307-5100 United States Department of Mathematic and Statisticss Auburn University Auburn AL 36830 United States

ISBN: (纸本)3642121888

Monte Carlo (MC) simulations are considered to be ideal for parallelization because a large Monte Carlo problem can often be easily broken up into many small, essentially independent, subproblems. Many Monte Carlo applications are suitable for grid computing environments. In such an environment, the number of substreams is not known in advance in the computing task. This is a challenge for generating random sequences by using the traditional splitting method, which is aimed at ways of partitioning the full period of a single sequence into parallel substreams. Explicit inversive congruential generator(EICG)[1] with prime modulus has some very compelling properties for parallel Monte Carlo simulations. EICG is an excellent pseudorandom number generator for parallalizing via parameterizing. This paper describes an implementation of parallel random number sequences by varying a set of different parameters instead of splitting a single random sequence. Comparisons with linear and nonlinear generators in the library: SPRNG[2] are presented. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： Monte Carlo methods

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DADS: A dynamic and adaptive data space for interacting parallel applications

DADS: A dynamic and adaptive data space for interacting para...

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IASTED international conference on Parallel and Distributed computing and Systems, PDCS 2010

作者： Zhang, Fan Docan, Ciprian Parashar, Manish Klasky, Scott Center for Autonomic Computing Rutgers University Piscataway NJ United States Oak Ridge National Laboratory P.O. Box 2008 Oak Ridge TN 37831 United States

ISBN: (纸本)9780889868786

Emerging scientific and engineering simulations are composed of multiple loosely coupled parallel application components that interact by sharing data at runtime. As a result, coupling and data sharing substrates that can facilitate such data exchange and asynchronous interaction between independent parallel application components, are critical. However, in real-world coupled simulation workflows, data exchange and interaction are dynamic, both in the type of interactions as well as the amount of data exchanged. As a result, the data sharing substrate must handle dynamic and changing coupling/data-exchange requirements from the applications. In this paper, we present the dynamic and adaptive data space(DADS) for coupled simulation workflows. DADS implements a scalable, distributed and dynamic in-memory data space, which is semantically specialized for simulations where data is associated with the discretization of an application domain, e.g., a grid or a mesh. DADS is dynamic in that the data space can be created and deleted at runtime to support dynamically occurring interaction and data exchange. Furthermore, a DADS space can automatically resize itself based on the data exchange requirements as well as the status of the underlying resources. DADS has been implemented and deployed on the Eugene IBM BlueGene/P, and evaluation of its performance on this system is presented.

关键词： Electronic data interchange

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Executing distributed applications on virtualized infrastructures specified with the VXDL language and managed by the HIPerNET framework

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1st international conference on Cloud computing, CloudComp 2009

作者： Koslovski, Guilherme Huu, Tram Truong Montagnat, Johan Primet, Pascale Vicat-Blanc INRIA University of Lyon France University of Nice - I3S France CNRS - I3S France

ISBN: (纸本)3642126359

With the convergence of computing and communication, and the expansion of cloud computing, new models and tools are needed to allow users to define, create, and exploit on-demand virtual infrastructures within wide area distributed environments. Optimally designing customized virtual execution-infrastructure and executing them on a physical substrate remains a complex problem. This paper presents the VXDL language, a language for specifying and describing virtual infrastructures and the HIPerNET framework to manage them. Based on the example of a specific biomedical application and workflow engine, this paper illustrates how VXDL enables to specify different customized virtual infrastructures and the HIPerNET framework to execute them on a distributed substrate. The paper presents experiments of the deployment and execution of this application on different virtual infrastructures managed by our HIPerNet system. All the experiments are performed on the grid'5000 testbed substrate. © Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering 2010.

关键词： Topology

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