2011 40th International Conference on Parallel Processing Workshops最新文献_第6页

iMace: Protecting Females from Sexual and Violent Offenders in a Community via Smartphones iMace:通过智能手机保护女性免受社区性暴力犯罪者的侵害

2011 40th International Conference on Parallel Processing Workshops Pub Date : 2011-09-13 DOI: 10.1109/ICPPW.2011.57

Jou-Chih Chang, Pi-Shih Wang, K. Fan, Shih-Rong Yang, D. Su, M. Lin, Min-Te Sun, Y. Tseng

引用次数: 11

Secure Connectivity for Intra-cloud and Inter-cloud Communication 云内和云间通信的安全连接

2011 40th International Conference on Parallel Processing Workshops Pub Date : 2011-09-13 DOI: 10.1109/ICPPW.2011.54

Shiping Chen, S. Nepal, R. Liu

引用次数: 20

An Efficient I/O Aggregator Assignment Scheme for Collective I/O Considering Processor Affinity 一种考虑处理器亲和性的I/O聚合器分配方案

2011 40th International Conference on Parallel Processing Workshops Pub Date : 2011-09-13 DOI: 10.1109/ICPPW.2011.23

Kwangho Cha, S. Maeng

{"title":"An Efficient I/O Aggregator Assignment Scheme for Collective I/O Considering Processor Affinity","authors":"Kwangho Cha, S. Maeng","doi":"10.1109/ICPPW.2011.23","DOIUrl":"https://doi.org/10.1109/ICPPW.2011.23","url":null,"abstract":"As the number of processes in parallel applications increases, the importance of parallel I/O is also emphasized. Collective I/O is the specialized parallel I/O which provides the function of single-file-based parallel I/O. Collective I/O in popular message-passing interface (MPI) libraries follows a two-phase I/O scheme, in which the particular processes, namely I/O aggregators, perform important roles by engaging communications and I/O operations. Although there have been many previous works to improve the performance of collective I/O, it is hard to find a study about an I/O aggregator assignment considering multi-core architecture. Nowadays, many HPC systems use the multi-core system as a computational node. Therefore, it is important to understand the characteristics of multi-core architecture, such as processor affinity, in order to increase the performance of parallel applications. In this paper, we discovered that the communication costs in collective I/O were different according to the placement of I/O aggregators, where the computational nodes consisted of multi-core system and each node had multiple I/O aggregators. We also proposed a modified collective I/O scheme, in order to reduce the communication costs of collective I/O, by proper placement of I/O aggregators. The performance of our proposed scheme was examined on a Linux cluster system and the result demonstrated performance improvements in the range of 7.08% to 90.46% for read operations and 20.67% to 90.18% for write operations.","PeriodicalId":173271,"journal":{"name":"2011 40th International Conference on Parallel Processing Workshops","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123247739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Critical-Path-Guided Interactive Parallelisation 关键路径引导的交互式并行化

2011 40th International Conference on Parallel Processing Workshops Pub Date : 2011-09-13 DOI: 10.1109/ICPPW.2011.26

Jonathan Chee Heng Mak, A. Mycroft

{"title":"Critical-Path-Guided Interactive Parallelisation","authors":"Jonathan Chee Heng Mak, A. Mycroft","doi":"10.1109/ICPPW.2011.26","DOIUrl":"https://doi.org/10.1109/ICPPW.2011.26","url":null,"abstract":"With the prevalence of multi-core processors, it is essential that legacy programs are parallelised effectively and efficiently. However, compilers have not been able to automatically extract sufficient parallelism in general programs. One of the major reasons, we argue, is that algorithms are often implemented sequentially in a way that unintentionally precludes efficient parallelisation. As manual parallelisation is usually tedious and error-prone, we propose a profiling-based interactive approach to program parallelisation, by presenting a tool-chain with two main components: Embla 2, a dependence-profiler that estimates the amount of task-level parallelism in programs, and Woolifier, a source-to-source transformer that uses Embla 2's output to parallelise programs using Wool, a Cilk-like API, to express parallelism. Based on profiled dependences, our tool-chain (i) performs an automatic best-effort parallelisation and (ii) presents remaining critical paths in a concise graphical form to the programmer, who can then quickly locate and refactor parallelism bottlenecks. Using case studies from the SPEC CPU 2000 benchmarks, we demonstrate how this tool-chain enables us to efficiently parallelise legacy sequential programs, achieving significant speed-ups on commodity multi-core processors.","PeriodicalId":173271,"journal":{"name":"2011 40th International Conference on Parallel Processing Workshops","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129967040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Accelerating the Near Non-bonded Force Computation in Desmond with Graphic Processing Units 图形处理单元加速Desmond中近非粘结力的计算

2011 40th International Conference on Parallel Processing Workshops Pub Date : 2011-09-01 DOI: 10.1109/ICPPW.2011.14

Hualiang Deng, Xin Li, X. Liu, G. Wang

引用次数: 1

A Secure File Allocation Algorithm for Heterogeneous Distributed Systems 异构分布式系统的安全文件分配算法

2011 40th International Conference on Parallel Processing Workshops Pub Date : 2011-09-01 DOI: 10.1109/ICPPW.2011.40

Yun Tian, Jiong Xie, Shu Yin, Ji Zhang, X. Qin, Mohammed I. Alghamdi, Meikang Qiu, Yiming Yang

引用次数: 5