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

作者： Panitkin, Sergey Fine, Valery Wenaus, Torre Brookhaven Natl Lab Upton NY 11973 USA

In the past two years the ATLAS Collaboration at the LHC has collected a large volume of data and published a number of ground breaking papers. The grid-based ATLAS distributed computing infrastructure played a crucial role in enabling timely analysis of the data. We will present a study of the performance and usage of the ATLAS grid as platform for physics analysis in 2011. This includes studies of general properties as well as timing properties of user jobs (wait time, run time, etc). These studies are based on mining of data archived by the PanDA workload management system.

关键词： distributed computer systems

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gridView: A dynamic and visual grid monitoring system

GridView: A dynamic and visual Grid monitoring system

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7th international conference on High Performance computing and grid in Asia Pacific Region (HPCAsia 2004)

作者： Ni, GB Ma, J Li, B Chinese Acad Sci Inst Comp Technol Beijing 100080 Peoples R China

ISBN: (纸本)076952138X

Computational and Data grids consist of the coordinated utilization of large sets of diverse, geographically distributed resources for high performance computation. In order to make better use of these computing entities, a substantial amount of monitoring data is collected for a variety of tasks. The large number of heterogeneous resources available in grids makes the task challenging. The processing of mass data is another problem with large amounts of monitoring data increasing. In this paper, a monitoring system in grid environment called gridView is presented. It gathers much important information from a large computing facility. For giving more efficient performance evaluation, comprehensive computation capacity (C3) model is set up. gridView also gives mass data management mechanism and mass data visualization technique. Due to the grid environment, gridView must consider dynamic changes and heterogeneous characteristic of different platforms.

关键词： grid computing software performance evaluation system monitoring data visualisation graphical user interfaces gridView dynamic grid monitoring system visual grid monitoring system computational grids data grids geographically distributed resources performance evaluation mass data management mass data visualization computation capacity model

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distributed Minimum Spanning Tree based Information Exchange Policy for distributed Systems 4

Distributed Minimum Spanning Tree based Information Exchange...

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4th IEEE international conference on Parallel, distributed and grid computing (IEEE PDGC)

作者： Alam, Taj Raza, Zahid Jaypee Inst Informat Technol Dept Comp Sci Noida India Jawaharlal Nehru Univ Sch Comp & Syst Sci New Delhi India

ISBN: (纸本)9781509036691

distributed system has an inherent problem of unevenly distributed load. The possible solution to this problem is load balancing. For the above purpose it is very important to have updated information about the load status of the nodes comprising the system. This work proposes a distributed Minimum Spanning Tree based Information Exchange (DMSTIE) strategy. The strategy helps in collecting the load information of the nodes through the edges formed during the distributed Minimum Spanning Tree (DMST) process. Based on the information about the system state various load balancing approach can be applied for transferring extra load over the underutilized nodes. An MST based approach results in the information collection and eventually dispatch of load efficiently in terms of communication and computation.

关键词： load balancing information exchange distributed system distributed minimum spanning tree prim's algorithm

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grid technology for structural analysis

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ADVANCES IN ENGINEERING SOFTWARE 2007年第11-12期38卷 738-749页

作者： Alonso, J. M. de Alfonso, C. Garcia, G. Hernandez, V. Univ Politecn Valencia Dept Sistemas Informat & Computac E-46071 Valencia Spain

This paper presents a High Performance computing-based application for 3D structural analysis of buildings. Since the solution of a large linear system of sparse equations supposes the most time-consuming phase, several public domain parallel numerical libraries, with state-of-the-art capabilities, have been tested. The parallel application developed allows reducing the analysis time and simulating larger structures. Nevertheless, structural engineers rarely have available high cost parallel machines. Thus, a grid Structural Analysis service, that integrates the parallel application, has been implemented, taking advantage of computers geographically distributed in Internet. This service makes it possible to simulate in a realistic way, and concurrently, a high number of different structural alternatives of large dimension buildings during their design stage, without considering structural simplifications or investing in expensive computers. (c) 2006 Elsevier Ltd. and Civil-Comp Ltd. All rights reserved.

关键词： 3D structural analysis of buildings High Performance computing techniques parallel direct and iterative solvers numerical libraries grid computing Globus Toolkit

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Adaptive grid service flow management: Framework and model

Adaptive Grid service flow management: Framework and model

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IEEE international conference on Web Services (ICWS 2004)

作者： Long, Y Lam, H Su, SYW Univ Florida Database Syst R&D Ctr Gainesville FL 32611 USA

ISBN: (纸本)0769521673

grid computing provides the basic software infrastructure for integrating geographically distributed resources and services through standardized grid services. One of the key challenges to enable the broader use of grid services beyond the domain of scientific computing is the ability to perform complex tasks that require the modeling and coordination of the enactment of a number of distributed grid services. Workflow technology is a good candidate for supporting grid service flow. However, traditional workflow is static, thus unable to exploit the dynamic information available in the grid and respond to the dynamic nature of the grid. In this paper, we present an adaptive framework that provides adaptive management of grid service flows. The framework is based on an Adaptive grid Service Flow Model and is supported by an Event-Trigger-Rule (ETR) technology that will be used to trigger rules in a distributed fashion to adapt a grid service flow to the dynamic grid environment and the changing requirements of a grid application.

关键词： adaptive grid service flow grid service flow model grid service flow framework grid services integration and management

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Research on Implementation of grid Monitoring System Based on GMA

Research on Implementation of Grid Monitoring System Based o...

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WRI international conference on Communications and Mobile computing

作者： Cai, Hongbin Min, Fan Liao, Jianwei Univ Elect Sci & Technol China Sch Comp Sci Chengdu 610054 Sichuan Peoples R China

ISBN: (纸本)9780769535012

grid technology opens the way to build collaborative environments that enable distributed multi-organizational teams to jointly use computing resources. Thus automatic resources/services discovery should be launched with the dynamicity of grid elements. Hardware and software failure can be found and solved in lime by monitoring. Analyzing the gathered data could help to find performance bottleneck. In this paper, we analyzed the aims and main tasks of grid Monitoring and the advantage of GMA (grid monitoring Architecture), then proposed a java-based design pattern of grid Monitoring System (JGMS) oil the basis of GMA. The JGMS uses special agents to complete the communication between Producers and Consumers in different grid nodes. So, it can work on different platforms, pass through firewalls and be easy to deploy and use.

关键词： Condition monitoring Collaboration distributed computing grid computing Hardware Data analysis Performance analysis Pattern analysis Computer architecture Java

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Cloud-Enabled Scalable Decision Tree Construction

Cloud-Enabled Scalable Decision Tree Construction

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5th international conference on Semantics, Knowledge and grid

作者： Han, Yuzhang Brezany, Peter Janciak, Ivan Univ Vienna Dept Comp Sci Vienna Austria

ISBN: (纸本)9781424452781

Cloud computing, as a newly emerging technology, is an innovation providing dynamically scalable and virtualized resources as services. In this paper, we introduce our recent effort to build a service-oriented distributed computational system based on the Cloud concepts named distributed Computational Service Cloud. This kind of Cloud hosts scalable grid services, which are implemented with Web-Services-Resource-Framework-compliant (WSRF) [1] Web services, enabling high-performance and distributed computing. We evaluate the Cloud using scalable decision tree service, which provides computational intensive data mining algorithm. The architecture of the system as well as details of the distributed decision tree construction is the kernel content of this paper.

关键词： Cloud computing Decision Tree distributed computation Web service

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Security-driven scheduling algorithms based on Eigentrust in grid

Security-driven scheduling algorithms based on Eigentrust in...

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

作者： Li, KL He, Y Liu, XL Wang, Y Hunan Univ Coll Comp & Commun Changsha 410082 Peoples R China

ISBN: (纸本)0769524052

grid computing provides a virtual framework for controlled sharing of resources across institutional boundaries. Recently, trust has been recognized as an important factor for scheduling in grid Trust is a complex subject relating to such as reliability, honesty, and competence of the trusted entity. Trust value computing becomes more difficult in grid as the nodes are independent and distributed, and with a security aware task execution model, task scheduling is crucial to achieving high performance. In this paper, we present a trust model wherein each node is assigned a trust value that reflects the transaction experiences, Eigenvector is used to calculate the trust value and distribute eigentrust algorithm is modified according to the characteristic of the grid Furthermore, trust managers are set to guide scheduling, and security-driven algorithms are proposed to ensure the security of the executions. Simulations are performed to evaluate the performance of the algorithms.

关键词： Algorithms

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CDF GlideinWMS usage in grid computing of High Energy Physics

CDF GlideinWMS usage in Grid computing of High Energy Physic...

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

作者： Zvada, Marian Benjamin, Doug Sfiligoi, Igor Fermilab Natl Accelerator Lab POB 500 Batavia IL 60510 USA Inst Expt Phys Kosice 04001 Slovakia Duke Univ Durham NC 27708 USA

Many members of large science collaborations already have specialized grids available to advance their research in the need of getting more computing resources for data analysis. This has forced the Collider Detector at Fermi lab (CDF) collaboration to move beyond the usage of dedicated resources and start exploiting grid resources. Nowadays, CDF experiment is increasingly relying on glidein-based computing pools for data reconstruction. Especially, Monte Carlo production and user data analysis, serving over 400 users by central analysis farm middleware (CAF) on the top of Condor batch system and CDF grid infrastructure. Condor is designed as distributed architecture and its glidein mechanism of pilot jobs is ideal for abstracting the grid computing by making a virtual private computing pool. We would like to present the first production use of the generic pilot-based Workload Management System (glideinWMS), which is an implementation of the pilot mechanism based on the Condor distributed infrastructure. CDF grid computing uses glideinWMS for its data reconstruction on the FNAL campus grid, user analysis and Monte Carlo production across Open Science grid (OSG). We review this computing model and setup used including CDF specific configuration within the glideinWMS system which provides powerful scalability and makes grid computing working like in a local batch environment with ability to handle more than 10000 running jobs at a time.

关键词： grid computing

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ONLINE distributed DEBUGGING ON SCALABLE MULTIPROCESSOR ARCHITECTURES

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FUTURE GENERATION COMPUTER SYSTEMS-THE international JOURNAL OF grid computing AND ESCIENCE 1995年第4-5期11卷 375-385页

作者： BEMMERL, T WISMULLER, R RHEIN WESTFAL TH AACHEN LEHRSTUHL BETRIEBSSYST LFBS D-52056 AACHEN GERMANY TECH UNIV MUNICH LEHRSTUHL RECHNERTECH & RECHNERORG D-80290 MUNICH GERMANY

Debugging parallel programs is one of the most tedious jobs in programming scalable multiprocessor architectures. Due to the distributed resources of these machines, programming is often architecture dependent. Most development tools still reflect this dependency even during the analysis phase of parallel programs. This paper presents the distributed debugger DETOP, which offers a global name space and hides architectural features like the mapping of processes. DETOP is part of the integrated tool environment TOPSYS implemented on IPSC hypercubes, networks of SPARCstations and partly on Transputer and PowerPC based systems.

关键词： DEBUGGING PARALLEL COMPUTERS SOFTWARE MONITORING HARDWARE MONITORING distributed EVENT DETECTION PREDICATE TRANSFORMATION

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