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Analysis of multithreading in Java for symbolic computation on multicore processors

2014 National Conference on Emerging Trends in computing and Communication, ETCC 2014

作者： Murarka, Pawan Raj Reza, Motahar Panda, Rama Ranjan High Performance Computing Lab. School of Computer Science and Engineering National Institute of Science and Technology Berhampur Odisha India

ISBN: (纸本)9788132218166

In this paper we have described the impact on efficiency of algebraic computation due to multi core systems using java as the programming language. Hence we had taken two machines with different specification having variants of Windows in them and made a comparative analysis taking five different input samples. During this process we came across several aspects on which the computation performance depends upon. In succeeding discussion we have given a vivid description of how these factors show variations when they are blended in different quantities thereby justifying the need of a robust algorithm and a high performance system for efficient computation of mathematical expressions with varying complexities. © 2014 Springer.

关键词： Computational efficiency

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performance evaluation of SLIM and DRBL diskless PC clusters on fedora core 3

Performance evaluation of SLIM and DRBL diskless PC clusters...

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6th International Conference on Parallel and Distributed computing, Applications and Technologies, PDCAT 2005

作者： Yang, Chao-Tung Chen, Ping-I. Chen, Ya-Ling High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 40704 Taiwan

ISBN: (纸本)0769524052

In this paper, we introduce our experiments on SLIM and DRBL diskless PC clusters. We constructed them by using 16 machines and only one disk. We run the matrix multiplication and bioinformatics software to evaluate their performance. We find that the performance of SLIM has a great improvement, and the system setup time is much less than before. The network loading of DRBL is also very high. The system boot-up time is no difference between these two systems. The best way to construct the diskless Linux cluster is to eliminate the image size. It can make the nodes have more memory space to handle the program and ease the network loading. © 2005 IEEE.

关键词： Personal computers

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A computational-intelligence-based optimization of agents' initial positions in land combat simulation

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自然科学进展(英文版) 2003年第8期13卷 620-625页

作者： WU Chunguo LIANG Yanchun GE Hongwei CAO Lijuan LEE Heow Pueh College of Computer Science and Technology Jilin University Changchun 130012 China Institute of High Performance Computing Singapore 117528 Singapore College of Mathematics Science Jilin University Changchun 130012 China Institute of High Performance Computing Singapore 117528 Singapore Institute of High Performance Computing Singapore 117528 Singapore Department of Mechanical Engineering National University of Singapore Singapore 119260 Singapore

The optimization of agents' initial properties enables agents to perform their assigned tasks more perfectly. This paper presents an optimizing method using the combination of radial basis function (RBF) neural network and genetic algorithm (GA). In the land combat simulation, the method can ensure that the agents optimized defeat the agents not optimized absolutely. Compared with the optimization based on support vector machines (SVM), the proposed method improves the efficiency more than twenty times, so it suits the cases where the speed as well as performance is required.

关键词： multi-agent system RBF neural network support vector machine land combat simulation genetic algorithm

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Using grid computing and PVFS2 technologies for construction of an e-learning environment

Using grid computing and PVFS2 technologies for construction...

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5th IEEE International Conference on Advanced Learning Technologies, ICALT 2005

作者： Yang, Chao-Tung Ho, Hsin-Chuan Pan, Chien-Tung High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 40704 Taiwan

ISBN: (纸本)0769523382

In recent years, e-Learning has become a popular method of learning. Generally, an e-Learning Platform which provided multi-media content required a high capacity storage device such as NAS (Network Attached Storage) or SAN (Storage Area Network). However, many schools with insufficient budgets cannot afford this type of expensive equipment. Thus, we employ Grid computing and PVFS (Parallel Virtual file system) technology to integrate the idling storage resources in the school as a means to substitute the purchase of an expensive high-level storage server. In this research we will link several sets of PCs in the school to make them armed with the storage and computing capacity like that of a high-end server. We hope the goal of sharing and reuse of resources among the schools can be achieved. © 2005 IEEE.

关键词： Distributed computer systems

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Using data grid technologies to construct a digital library environment

Using data grid technologies to construct a digital library ...

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ITRE 2005 - 3rd International Conference on Information Technology: Research and Education

作者： Yang, Chao-Tung Ho, Hsin-Chuan High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 40704 Taiwan

ISBN: (纸本)0780389328

Since the beginning of the 21st century, knowledge has been accumulating at a tremendous speed. Access to global books, literature, and data are continually increasing in large quantities. With the development of Internet and the rapid advancement of information technology, a new knowledge transfer model has been developed: Books and other forms of digitized data provide readers with the most convenient methods to search for and obtain library content. We propose a Global Digital Library Grid concept This digital library organization is not only to include new members (new libraries or new museums) flexibility, but also not affect the system and framework of the original Grid member. As the organization grows, it will form an enormous Virtual Grid Digital Library to provide readers with speedy Knowledge Service that will meet their individual requirements. © 2005 IEEE.

关键词： Digital libraries

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Using a performance-based skeleton to implement divisible load applications on grid computing environments

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Journal of Information science and engineering 2009年第1期25卷 59-81页

作者： Shih, Wen-Chung Yang, Chao-Tung Tseng, Shian-Shyong Department of Information Science and Applications Asia University Taichung 413 Taiwan High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung 407 Taiwan Department of Computer Science National Chiao Tung University Hsinchu 300 Taiwan

Applications with divisible loads have such a rich source of parallelism that their parallelization can significantly reduce their total completion time on grid computing environments. However, it is a challenge for grid users, probably scientists and engineers, to develop their applications which can exploit the computing power of the grid. We propose a performance-based skeleton algorithm for implementing divisible load applications on grids. Following this skeleton, novice grid programmers can easily develop a high performance grid application. To examine the performance of programs developed by this approach, we apply this skeleton to implement three kinds of applications and conduct experiments on our grid test-bed. Experimental results show that programs implemented by this approach run more rapidly than those using conventional scheduling schemes.

关键词： Grid computing

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Demystifying Ethereum account diversity:observations,models and analysis

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Frontiers of computer science 2022年第4期16卷 119-130页

作者： Chaofan Wang Xiaohai Dai Jiang Xiao Chenchen Li Ming Wen Bingbing Zhou Hai Jin Clusters and Grid Computing Lab National Engineering Research Center for Big Data Technology and System Services Computing Technology and System LabWuhan430074China School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan430074China School of Cyber Science and Engineering Huazhong University of Science and TechnologyWuhan430074China Centre for Distributed and High Performance Computing School of Information TechnologiesThe University of SydneyCamperdownNew South Wales2006Australia

Blockchain platform Ethereum has involved millions of accounts due to its strong potential for providing numerous services based on smart *** massive accounts can be divided into diverse categories,such as miners,tokens,and exchanges,which is termed as account diversity in this *** benefit of investigating diversity are multi-fold,including understanding the Ethereum ecosystem deeper and opening the possibility of tracking certain abnormal ***,the exploration of blockchain account diversity remains *** the most relevant studies,which focus on the deanonymization of the accounts on Bitcoin,can hardly be applied on Ethereum since their underlying protocols and user idioms are *** this end,we present the first attempt to demystify the account diversity on *** key observation is that different accounts exhibit diverse behavior patterns,leading us to propose the heuristics for classification as the *** then raise the coverage rate of classification by the statistical learning model Maximum Likelihood Estimation(MLE).We collect real-world data through extensive efforts to evaluate our proposed method and show its ***,we make an in-depth analysis of the dynamic evolution of the Ethereum ecosystem and uncover the abnormal arbitrage *** for the former,we validate two sweeping statements reliably:(1)standalone miners are gradually replaced by the mining pools and cooperative miners;(2)transactions related to the mining pool and exchanges take up a large share of the total *** latter analysis shows that there are a large number of arbitrage transactions transferring the coins from one exchange to another to make a price difference.

关键词： blockchain Ethereum classification account diversity network analysis

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Eliminate self-interference misses of cache through modifying data layout of arrays 4

Eliminate self-interference misses of cache through modifyin...

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4th International Conference/Exhibition on high performance computing in the Asia-Pacific Region, HPC-Asia 2000

作者： Lu, Xinda Chen, Jie High Performance Computing Laboratory Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai200030 China

ISBN: (纸本)0769505902

Loop tiling is an effective way to improve the cache hit ratio. However, while eliminating self-interference misses, tiling may produce small tiling factors for the cases of some arrays. In order to obtain stable and proper tiling factors, a new method that automatically generates tiling factors is proposed in this paper. These tiling factors are independent of arrays and can completely eliminate self-interference misses and can also significantly reduce cross-interference misses. © 2000 IEEE.

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A network bandwidth-ware job scheduling with dynamic information model for grid resource brokers

A network bandwidth-ware job scheduling with dynamic informa...

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3rd IEEE Asia-Pacific Services computing Conference, APSCC 2008

作者： Yang, Chao-Tung Leu, Fang-Yie Hu, Wen-Jen High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung City 40704 Taiwan

ISBN: (纸本)9780769534732

In this paper, we propose a resource broker, which providing a friendly interface for accessing available and appropriate resources via user credentials, is developed on a platform constructed by employing the Globus toolkit. This broker not only deploys a domainbased network information model and its dynamic version to measure network status by invoking Network Weather Service (NWS) on grid computing environments, but also uses the Ganglia and NWS tools to monitor resource status and network-related information. Based on the actual value of network bandwidth and preserving the advantages of our previous model, a network bandwidth-award job scheduling algorithm for grid resource brokerage is then developed for communication-intensive job execution. Furthermore, the network information and resource status collected are all up-to-date so that the resource broker can effectively match appropriate grid resources and users requests to improve execution.©2008 IEEE.

关键词： Scheduling algorithms

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A shareable e-Learning platform using data grid technology

A shareable e-Learning platform using data grid technology

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2005 IEEE International Conference on e-Technology, e-Commerce and e-Service, EEE-05

作者： Yang, Chao-Tung Ho, Hsin-Chuan High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung City 40704 Taiwan

ISBN: (纸本)0769522742

Over the past decade, speed in the transmission of knowledge is no longer the way it used to be. Due to this influence, conventional educational methodology has also followed this trend and has gone through a momentous transformation. An excellent example is e-Learning which has achieved and broken through the restrictions of time and space. In recent years it has become one of the most popular teaching methods. SCORM (Sharable Course Object Reference Model) the most popular e-Learning standard has been adapted from many differing e-Leaming platforms. Normally, courseware meeting SCORM standards is sharable with other e-Leaming platforms. Most e-Learning platforms however are unable to share courseware directly on the Internet. With this in mind, we have employed one type of Grid computing technology called "Data Grid" in order to achieve this. This technology allows the integration of different SCORM platforms into a huge e-Learning environment. © 2005 IEEE.

关键词： Distance education

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