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High Performance Computing Systems and Applications, 2008. HPCS 2008. 22nd International Symposium on

Date 9-11 June 2008

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Displaying Results 1 - 25 of 46
  • [Front cover]

    Publication Year: 2008 , Page(s): C1
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  • [Title page i]

    Publication Year: 2008 , Page(s): i
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  • [Title page iii]

    Publication Year: 2008 , Page(s): iii
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  • [Copyright notice]

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

    Publication Year: 2008 , Page(s): v - vii
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  • Welcome Message from the General Chair

    Publication Year: 2008 , Page(s): viii
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  • Organizing Committee

    Publication Year: 2008 , Page(s): ix
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  • High-Performance Computing Considered Harmful

    Publication Year: 2008 , Page(s): 1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (106 KB)  

    For more than forty years, discussion of scientific computing has been dominated by a minority who equate it with high performance computing. The result is a culture in which productivity is low, project failure rates are high, and quality is usually unknown. This talk examines how this situation arose, why it persists, and what can be done to fix it. View full abstract»

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  • Large-Scale Integrative Modeling of the Human Heart

    Publication Year: 2008 , Page(s): 2
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (112 KB)  

    Summary form only given. The contraction of the heart is triggered by an electrical impulse that propagates from one muscle cell to another. This organized activity generates a potential field that can be measured as an electrocardiogram (ECG) on the body surface, or with a catheter inside the heart. The measured signals provide a wealth of diagnostic information. This information has traditionall... View full abstract»

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  • How Do We Simulate Things at the Scale of Molecules and Electrons?  An Introduction to the Technology and HPC Aspects of Computational Chemistry

    Publication Year: 2008 , Page(s): 3
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (115 KB)  

    Summary form only given. Computer simulations combined with high performance computing have benefited many areas of science and engineering. Chemistry is no different. Computational chemistry involves simulating systems at the atomic and electronic level. When examining individual molecules at this microscopic scale, quantum mechanical effects are important. As a result, to get the physics 'right'... View full abstract»

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  • Efficient Parallel Computing for Laser-Gas Quantum Interaction and Propagation

    Publication Year: 2008 , Page(s): 4 - 8
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (231 KB) |  | HTML iconHTML  

    We present in this short paper some domain decomposition and high performance numerical techniques for simulating laser-gas interaction and propagation using a multi-scale Maxwell-Schrodinger model. Ionization and high order harmonic generation are in particular taken into account in this micro-macro model, leading to additional simulation difficulties. We propose some benchmarks to validate the p... View full abstract»

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  • The Variational Cluster Approximation for Hubbard Models:  Practical Implementation

    Publication Year: 2008 , Page(s): 9 - 15
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (362 KB) |  | HTML iconHTML  

    The Variational cluster approximation (VCA) is an approximate method for finding properties the Hubbard model, the basic model used in the study of strongly correlated electron systems. Such systems include, for instance, high-temperature and organic superconductors. The method involves solving exactly the Hubbard model on a small cluster of lattice sites, after adding fields that represent the ef... View full abstract»

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  • MATDCAL: A First Principles Package for Nanoelectronics Modeling

    Publication Year: 2008 , Page(s): 16
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (150 KB)  

    We report an ab initio software package MATDCAL for investigating electronic transport properties in nano electronic devices. MATDCAL is based on carrying out real space density functional theory (DFT) within the Keldysh nonequilibrium Green function (NEGF) framework. The code is mainly written in MATLAB, combining with numerically intensive part in Java for efficiency. In order to realize paralle... View full abstract»

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  • Computational Investigation of Protein Chemistry: “S-Nitrosohemoglobin”

    Publication Year: 2008 , Page(s): 17
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (158 KB) |  | HTML iconHTML  

    Reliable computational studies of large biological systems have only recently become possible due to the availability of high-performance computing resources. In this contribution, we present large-scale quantum mechanics / molecular mechanics (QM/MM) studies of hemoglobin (Hb) and its derivatives. In recent years, Hb has been reported to play an important role in blood-flow regulation via its rea... View full abstract»

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  • Computational Enzymology: Promises and Challenges

    Publication Year: 2008 , Page(s): 18
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (146 KB)  

    With the steady increase of computing power, it will soon become conceivable to decode the function of an enzyme strictly from its molecular structure. To realize this ambitious goal, progress has to be made on two fronts: (1) the realism of the molecular models used in the simulations and (2) the speed at which these models can be computed. The author discuss aspects of these two problems with wo... View full abstract»

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  • Building and Refining General Purpose Computing Clusters in an Emerging HPCOriented Research Environment

    Publication Year: 2008 , Page(s): 19 - 25
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (365 KB) |  | HTML iconHTML  

    The increasing uptake of HPC, and cluster computing in particular, has led many people to develop creative solutions to the technical challenges that they encounter in the establishment of useful HPC facilities. Proven solutions from our experiences in acquiring and building research clusters for general purpose scientific use are presented to a number of such issues, ranging from the performance ... View full abstract»

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  • Stateless Clustering Using OSCAR and PERCEUS

    Publication Year: 2008 , Page(s): 26 - 32
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (394 KB) |  | HTML iconHTML  

    OSCAR has matured over the years into a very capable, yet simple high-performance clustering platform solution. Ease of building and administrating a cluster, effective resource management and scalable performance are some of the issues which have gathered a lot of focus in the HPC domain lately. This technical paper describes the integration of OSCAR and PERCEUS, which aims to enable the deployme... View full abstract»

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  • A Scalable Tools Communications Infrastructure

    Publication Year: 2008 , Page(s): 33 - 39
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (347 KB) |  | HTML iconHTML  

    The Scalable Tools Communication Infrastructure (STCI) is an open source collaborative effort intended to provide high-performance, scalable, resilient, and portable communications and process control services for a wide variety of user and system tools. STCI is aimed specifically at tools for ultrascale computing and uses a component architecture to simplify tailoring the infrastructure to a wide... View full abstract»

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  • Proposal for Modifications to the OSCAR Architecture to Address Challenges in Distributed System Management

    Publication Year: 2008 , Page(s): 40 - 46
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (291 KB) |  | HTML iconHTML  

    OSCAR, a tool for the deployment and the management of clusters, has historically provided a simple Graphical User Interface (GUI) that aims to hide technical details associated with the management of such distributed platforms. The OSCAR GUI followed a fairly monolithic architecture, which was difficult to extend. Thankfully, OSCAR developers have made deep modifications to the overall OSCAR arch... View full abstract»

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  • Using OSCAR to Win the Cluster Challenge

    Publication Year: 2008 , Page(s): 47 - 51
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (387 KB) |  | HTML iconHTML  

    This paper discusses using OSCAR (open source cluster administration resource) to compete and win, in the first ever cluster challenge competition at supercomputing 2007. The cluster challenge invited teams of undergraduate students to assemble a cluster and compete for 44 hours on the conference floor. The teams competed in two main areas; (i) achieving the best results on the high performance co... View full abstract»

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  • Models for Grid Applications and Jobs

    Publication Year: 2008 , Page(s): 52 - 58
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (288 KB) |  | HTML iconHTML  

    Grid computing technologies have made it possible for researchers to get access to more computational resources than ever before. However, heterogeneity of resources, scheduling policy and applications makes it difficult to manage the execution of jobs in such environments. The manner in which a job is configured to run on one resource may not be appropriate for another resource. Long running jobs... View full abstract»

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  • Utility Computing and Market-Based Scheduling: Shortcomings for Grid Resources Sharing and the Next Steps

    Publication Year: 2008 , Page(s): 59 - 68
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (498 KB) |  | HTML iconHTML  

    This paper lays out fundamental social and economic principles that must be addressed in order to enable true High-Performance Computing resources sharing at the scale of a national Grid. Focusing on the literature around the concept of a Grid Economy, it starts by a rather exhaustive survey of related work in utility computing, market- based scheduling and other economic approaches in resource al... View full abstract»

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  • A Framework for Executing Long Running Jobs in Grid Environments

    Publication Year: 2008 , Page(s): 69 - 75
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (387 KB) |  | HTML iconHTML  

    Computational jobs that take days, weeks or months to run usually cannot be executed as a single job due to system failures and scheduling constraints. Instead the job must be split into a series of shorter jobs. Solutions for managing the execution of such jobs in grid environments must address many issues. Participating systems and their properties can change over time and therefore it is import... View full abstract»

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  • SpectroGrid: Providing Simple Secure Remote Access to Scientific Instruments

    Publication Year: 2008 , Page(s): 76 - 82
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (982 KB) |  | HTML iconHTML  

    With the availability of high performance networks and the increase in the number of online scientific instruments, remote instrumentation is a topic with much popularity lately, promising better instrument utilization, easier collaboration between distant organizations and diminution of travel-related costs and overhead. At NRC we needed a simple and secure method for researchers to remotely acce... View full abstract»

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  • Computational Astrophysics

    Publication Year: 2008 , Page(s): 83
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (145 KB)  

    Summary form only given. Large-scale computation has achieved a pivotal role in many areas of astrophysics and cosmology. Not only does increasing computational power allow us to better model the huge range of spatial and temporal scales in the universe, but simulations provide in many cases the only laboratory in which we may actively experiment on cosmic phenomena. The talk will highlight some o... View full abstract»

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