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3rd international Workshop on e-Activity (IWEA2009)/10th ACIS international conference on Software Engineering Artificial Intelligence, Networking and parallel/distributed computing

作者： Joe, Inwhee Kim, Dongik Hanyang Univ Dept Elect & Comp Engn Seoul 133791 South Korea

ISBN: (纸本)9780769536422

Recently, most researches in the area of wireless sensor networks are limited to the ground environment, so the demand for underground wireless sensor networks is increasing. However the underground environment is different from the ground environment in that there are some critical problems in reliability due to the large path loss of the underground. therefore, in this paper we propose an opportunistic routing protocol for improving the reliability in the underground environment. through the test-bed experiments the proposed routing protocol is compared with other routing protocols.

关键词： Routing protocols Wireless sensor networks distributed computing Hardware Relays Computer networks Concurrent computing Media Access Protocol Software engineering Artificial intelligence

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Network and parallel computing

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international JOURNAL OF parallel PROGRAMMING 2015年第3期43卷 311-315页

作者： Hsu, Ching-Hsien Li, Xiaoming Shi, Xuanhua Chung Hua Univ Dept Comp Sci & Informat Engn Hsinchu Taiwan Univ Delaware Dept Elect & Comp Engn Newark DE USA Huazhong Univ Sci & Technol Sch Comp Sci & Technol Wuhan 430074 Peoples R China

It’s our pleasure to bring you this special issue of the international Journal of parallel Programming on the network and parallel computing. Prior to the publication to this special issue, all papers were presented in the 10th IFIP international conference on Network and parallel computing (NPC’13) held from September 19 to September 21 2013 in Guiyang, China. Since 2003, NPC has become a valuable venue for engineers and scientists to present their excellent ideas and experiences in system?fields of distributed and parallel computing. the NPC 2013 continues this tradition and in particular extends areas of interest to Big data computing and parallel and multicore issues and opportunities. Huazhong University of Science and Technology, China organized this year’s NPC conference.

关键词： CLOUD storage SEMANTIC Web parallel algorithms

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Balanced Dense Polynomial Multiplication on Multi-cores

Balanced Dense Polynomial Multiplication on Multi-cores

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10th international conference on parallel and distributed computing, applications and technologies

作者： Maza, Marc Moreno Xie, Yuzhen Univ Western Ontario Ontario Res Ctr Comp Algebra London ON Canada MIT Comp Sci & Artificial Intelligence Lab Cambridge MA 02139 USA

ISBN: (纸本)9781424452910

In symbolic computation, polynomial multiplication is a fundamental operation akin to matrix multiplication in numerical computation. We present efficient implementation strategies for HT-based dense polynomial multiplication targeting multi-cores. We show that balanced input data can maximize parallel speedup and minimize cache complexity for bivariate multiplication. However, unbalanced input data, which are common in symbolic computation, are challenging. We provide efficient techniques, what we call contraction and extension, to reduce multivariate (and univariate) multiplication to balanced bivariate multiplication. Our implementation in Cilk++ demonstrates good speedup on multi-cores.

关键词： parallel symbolic computation parallel polynomial multiplication parallel multi-dimensional FFT/TFT Cilk plus multi-core

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Iterative Mapreduce MPI Oil Reservoir Simulator 10

Iterative Mapreduce MPI Oil Reservoir Simulator

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10th international conference on Software technologies (ICSOFT)

作者： Mansurova, Madina Akhmed-Zaki, Darkhan Shomanov, Adai Matkerim, Bazargul Alimzhanov, Ermek al Farabi Kazakh Natl Univ Dept Comp Sci Alma Ata Kazakhstan

ISBN: (纸本)9789897581397

Paper presents an advanced Iterative MapReduce MPI oil reservoir simulator. First we present an overview of working implementations that make use of the same technologies. then we define an academic example of numeric problem with an emphasis on its computational features. We present a distributed parallel algorithm of hybrid solution of the problem using MapReduce Hadoop and MPI technologies and describe an improved variant of the algorithm using memory-mapped files.

关键词： MapReduce MPI distributed parallel computing Memory-mapped Files

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What the parallel-processing community has (failed) to offer the multi/many-core generation

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JOURNAL OF parallel AND distributed computing 2009年第9期69卷 807-812页

作者： Traff, Jesper Larsson NEC Europe Ltd NEC Labs Europe D-53757 St Augustin Germany

the international parallel and distributed Processing Symposium (IPDPS) 2008 panel with the title "How to avoid making the same Mistakes all over again: What the parallel-processing Community has (failed) to offer the multi/many-core Generation" sought to provoke discussion on current and recent computer science education in relation to the emergence of fundamentally parallel multi/many-core systems. Is today's/tomorrow's/yesterday's computer science graduate equipped to deal with the challenges of parallel software development for such systems? Are mistakes from the past being unnecessarily repeated? What are the fundamental contributions of the parallel processing research community to the current state of affairs that are possibly being ignored? What are the new challenges that have not been addressed in past parallel processing research? How should computer-science education in parallel processing look like? Should it be taught at all? To the extent that there was consensus among the panelists, they agreed on the premise for the panel, namely that there is a mismatch in computer-science education concerning parallelism, and that there may be reasons to be concerned. they agreed on stressing the importance of (a) applications as a driving factor in research and education, (b) parallel algorithms, and of (c) focusing on the ease of parallel programming and not exclusively on parallel performance, and cited for instance heterogeneous parallelism and power awareness as new issues for the multi-core generation. the panelists were Hideharu Amano (Keio University), John Gustafson (Clearspeed technologies), Keshav Pingali (University of Austin, Texas), Vivek Sarkar (Rice University), Uzi Vishkin (University of Maryland), and Katherine Yelick (University of California at Berkeley). the panel was organized and moderated by the author. (c) 2009 Elsevier Inc. All rights reserved.

关键词： IPDPS panel discussion parallel processing Multi-core processors Education parallel algorithmics applications Embedded processing Heterogeneous processing Power awareness

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parallel FDTD Simulation of Photonic Crystals and thin-Film Solar Cells

Parallel FDTD Simulation of Photonic Crystals and Thin-Film ...

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13th international conference on parallel and distributed computing, applications, and technologies (PDCAT)

作者： Wang, Wu Chi, Xuebin Feng, Yangde Zhao, Yonghua Chinese Acad Sci Supercomp Ctr Comp Network Informat Ctr Beijing 100190 Peoples R China

ISBN: (纸本)9780769548791

Finite difference time domain (FDTD) method is a robust and accurate algorithm which is widely used in computational electromagnetic field and the simulation of optical phenomenon. In this paper, parallel FDTD based on overlapped domain decomposition is used to simulate the band gap of photonic crystals and the quantum efficiency of thin-film solar cells. the light-trapping effect is also analyzed by parallel FDTD, it's very important to improve light absorption. Numerical result demonstrates that the accuracy and the speedup of parallel FDTD are very high for large scale problem.

关键词： finite difference time domain method parallel photonic crystal thin-film solar cell quantum efficiency

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Research on the quickly evaluation of flooding disaster based on the parallel geographic image processing system

Research on the quickly evaluation of flooding disaster base...

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4th international conference on parallel and distributed computing, applications and technologies (PDCAT 2003)

作者： Bi, JT Fang, JY Chi, th He, JB CAS Inst Geog Sci & Nat Resources Beijing 100101 Peoples R China

ISBN: (纸本)0780378407

Using parallel Geographic Image Processing System, the flooding disaster will be monitoring and evaluating in time. Using ParGIP to establish background database and process RS images, we can get the losses of the disaster by overlaying operation in 24 hours. According to the experiment in the Poyang Lake region, this method can promote the speed and the efficiency of the monitoring and evaluating of flooding disaster to several times.

关键词： parallel ParGIP flooding evaluation

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Consideration on the integration of ubiquitous and grid technologies

Consideration on the integration of ubiquitous and grid tech...

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10th IASTED international conference on Internet and Multimedia Systems and applications

作者： Sugiuchi, Hajime Koita, Takahiro Sato, Kenya Doshisha Univ Dept Informat Syst Design 1-3 Tatara Miyakodani Kyoto 6100321 Japan

ISBN: (纸本)9780889865877

A wide variety of grid technologies have already been researched and developed with the main aim of implementing high-performance computing. Even the major vendors are actively researching and developing grid technology, and have brought out numerous systems and software products. the grid allows distributed environments to be constructed on a global scale through the use of large numbers of computers. In fact numerous grids have already been constructed on a global scale and are being used in practice as the infrastructure for distributed processing environments. Meanwhile, studies have also been conducted with the aim of using the grid infrastructure as a ubiquitous distributed processing environment. However, grid middleware has chiefly been developed in order to implement high-performance computing, so in order to use it in a ubiquitous environment it would be necessary to investigate the functions that ubiquitous environments would need to have from the viewpoint of grid middleware. In this study we will outline the latest research trends where the grid is used as a ubiquitous environment, particularly with regard to the points of intersection between the grid and the ubiquitous environment, and we will investigate the functions needed when applying ubiquitous environments to grid middleware.

关键词： Internet computing the grid ubiquitous computing environments GlobusToolkit

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A CPU-GPGPU Scheduler Based On Data Transmission Bandwidth Of Workload

A CPU-GPGPU Scheduler Based On Data Transmission Bandwidth O...

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13th international conference on parallel and distributed computing, applications, and technologies (PDCAT)

作者： Huang, Wen Yu, Licheng Ye, Mingjiao Chen, Tianzhou Hu, Tongsen Zhejiang Univ Technol Coll Comp Sci Hangzhou Zhejiang Peoples R China Zhejiang Univ Coll Comp Sci Hangzhou Zhejiang Peoples R China

ISBN: (纸本)9780769548791

With the continuous development of GPUs, modern general-purpose computation on GPUs (GPGPUs) is providing growing parallelism to general programs besides graphics applications. However, for those programs that involve both CPU and GPU, the data transmission bandwidth between them may become bottleneck that prevents GPU from fully exploiting its parallel computing capacity. As to avoid the defect, we try to reduce the data transmission by keeping part of the computation tasks on the CPU side other than sending all the data over to the GPU and process there. In this way the computation is done on CPU and GPU in parallel, and therefore also reduces overall process time. In order to split the computation workload in a systematic approach, we try to divide the corresponding data into chunks of proper size. We experimented our data dividing and heterogeneous memory scheduling with 2 benchmarks. the matrix multiplication is more than 30% faster, and the k - means2D is nearly 10% faster, than running solely in GPU.

关键词： Memory scheduling Data transmission Heterogeneous parallel computing GPGPU

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An efficient parallel sorting compatible with the standard qsort

An efficient parallel sorting compatible with the standard q...

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10th international conference on parallel and distributed computing, applications and technologies

作者： Man, Duhu Ito, Yasuaki Nakano, Koji Hiroshima Univ Dept Informat Engn Hiroshima 7398527 Japan

ISBN: (纸本)9781424452910

the main contribution of this paper is to present an efficient parallel sorting "psort" compatible with the standard qsort. Our parallel sorting "psort" is implemented such that its interface is compatible with "qsort" in C Standard Library. therefore, any application program that uses standard "qsort" can be accelerated by simply replacing "qsort" call by our "psort". Also, "psort" uses standard "qsort" as a "subroutine for local sequential sorting. So, if the performance of "qsort" is improved by anyone in the community, then that of our "psort" is also automatically improved. To evaluate the performance of our "psort", we have implemented our parallel sorting in a Linux server with two Intel quad-core processors (i.e. eight processor cores). the experimental results show that our "psort" is approximately 6 times faster than standard "qsort" using 8 processors. Since the speed up factor cannot be more than 8 if we use 8 cores, our algorithm is close to optimal. Also, as far as we know, no previously published parallel implementations achieve a speed up factor less than 4 using 8 cores.

关键词： parallel algorithm Sorting Multicore processor C standard library

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