2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS)最新文献_第10页

Hardware-Centric Analysis of Network Performance for MPI Applications 以硬件为中心的MPI应用网络性能分析

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.92

K. Brown, Jens Domke, S. Matsuoka

{"title":"Hardware-Centric Analysis of Network Performance for MPI Applications","authors":"K. Brown, Jens Domke, S. Matsuoka","doi":"10.1109/ICPADS.2015.92","DOIUrl":"https://doi.org/10.1109/ICPADS.2015.92","url":null,"abstract":"As the scale of high-performance computing systems increases, optimizing inter-process communication becomes more challenging while being critical for ensuring good performance. However, the hardware layer abstraction provided by MPI makes it difficult to study application communication performance over the network hardware, especially for collective operations. We present a new approach to network performance analysis based on exposing low-level communication metrics in a flexible manner and conducting hardware-centric analysis of these metrics. We show how low-level network metrics can be revealed using Open MPI's Peruse utility, without interfacing with the hardware layer. A lightweight profiler, ibprof, was developed to aggregate these metrics from message passing events at a cost of <;1% runtime overhead for communication in NPB kernel and application benchmarks. We also developed a flexible visualization module for the Boxfish analysis tool to analyze our communication profile over the physical topology of the network. Using case studies, we demonstrate how our approach can identify communication anomalies in network applications and guide performance optimization strategies.","PeriodicalId":231517,"journal":{"name":"2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128431528","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: 9

Thread Count Prediction Model: Dynamically Adjusting Threads for Heterogeneous Many-Core Systems 线程数预测模型:动态调整异构多核系统的线程

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.64

Tao Ju, Weiguo Wu, Heng Chen, Zhengdong Zhu, Xiaoshe Dong

{"title":"Thread Count Prediction Model: Dynamically Adjusting Threads for Heterogeneous Many-Core Systems","authors":"Tao Ju, Weiguo Wu, Heng Chen, Zhengdong Zhu, Xiaoshe Dong","doi":"10.1109/ICPADS.2015.64","DOIUrl":"https://doi.org/10.1109/ICPADS.2015.64","url":null,"abstract":"Determining an appropriate thread count for a multithread application running on a heterogeneous many-core system is crucial for improving computing performance and reducing energy consumption. This paper investigates the interrelation between thread count and computing performance of applications, and designs a prediction model of the optimum thread count on the basis of Amdahl's law combined with regression analysis theory to improve computing performance and reduce energy consumption. The prediction model can estimate the optimum tread count relying on the program running behaviors and the architecture characteristics of heterogeneous many-core system. Using the estimated optimum thread count, the number of the active hardware threads and processing cores on the many-core processor is dynamically adjusted in the process of thread mapping to improve the energy efficiency of entire heterogeneous many-core system. The experimental results show that, using this paper proposed thread count prediction model, on an average, the computing performance is improved by 48.6%, energy consumption is reduced by 59%, and additional overhead introduced is 2.03% compared with that of the traditional thread mapping for the PARSEC benchmark programs run on an Intel MIC heterogeneous many-core system.","PeriodicalId":231517,"journal":{"name":"2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129784184","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: 9

Fair Decentralized Congestion and Awareness Control for Vehicular Networks 车辆网络的公平分散拥塞和感知控制

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.30

Matthias Sander Frigau

{"title":"Fair Decentralized Congestion and Awareness Control for Vehicular Networks","authors":"Matthias Sander Frigau","doi":"10.1109/ICPADS.2015.30","DOIUrl":"https://doi.org/10.1109/ICPADS.2015.30","url":null,"abstract":"Challenges surrounding 802.11p vehicular networks have become more apparent in recent years within the research community. The exchange of periodical beacons on the control channel is mandatory to support higher layer applications such as active safety applications. However, the nature of such wireless vehicular networks imposes a lot of serious problems, especially the risk that the radio channel becomes quickly saturated. Thus, congestion control and awareness control are crucial mechanisms to control the load and ensure that each vehicle is able to communicate with its most relevant neighbours respectively. In this paper, we tackle jointly congestion and awareness control by taking into consideration 2-hops influence, hidden-terminals, SINR, received power, and a fair bandwidth indicator measuring the performance distribution among a coalition of vehicles in a highly volatile vehicular network. A two-steps proactive distributed algorithm called TPA+IAB is proposed to improve the fair bandwidth utilization. Each step of the algorithm achieves a distinct goal: Intelligent Adaptive Beaconing (IAB) is in charge of controlling the congestion while the Transmit Power Adaptation (TPA) is in charge of controlling which neighbour should be part of a coalition with respect to down-link channel qualities. Different from awareness control algorithms which assume an optimal channel model, here a more realistic model is used to estimate dynamically the best communication range based on a non-deterministic propagation model. Realistic simulations with NS-3 show that the solution presented outperforms the well-known D-FPAV algorithm in non-homogeneous graphs.","PeriodicalId":231517,"journal":{"name":"2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129796170","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: 9

Towards a Human-Centred Approach in Modelling and Testing of Cyber-Physical Systems 迈向以人为中心的方法在建模和测试的网络物理系统

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.115

M. Spichkova, A. Zamansky, E. Farchi

引用次数: 15

SHAFT: Supporting Transactions with Serializability and Fault-Tolerance in Highly-Available Datastores 在高可用数据存储中支持具有序列化性和容错性的事务

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.95

Yuqing Zhu, Yilei Wang

引用次数: 1

Software Defined Networking for Communication and Control of Cyber-Physical Systems 用于信息物理系统通信和控制的软件定义网络

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.107

K. Ahmed, J. Blech, M. Gregory, H. Schmidt

{"title":"Software Defined Networking for Communication and Control of Cyber-Physical Systems","authors":"K. Ahmed, J. Blech, M. Gregory, H. Schmidt","doi":"10.1109/ICPADS.2015.107","DOIUrl":"https://doi.org/10.1109/ICPADS.2015.107","url":null,"abstract":"Cyber-physical Systems (CPS) combine human-machine interaction, the physical world around us, and software aspects by integrating physical systems with communication networks. Opportunities and research challenges are largely interconnected with the three core sub-domains of CPS — computation, communication and control. The current state of the art of the legacy communication technology is one of the major hindrances limiting the evolution of CPS. Most specifically, innovation in communication is restricted with existing routing and switching technologies leaving no practical methods for researchers to test their new ideas. Software Defined Networking (SDN), through the realization of OpenFlow, separates network control logic from the underlying physical routers and switches. This phenomenon allows researchers to write high-level control programs specifying the behavior of the core networks used to implement CPS and thus, enable innovation in next generation communication architectures for CPS. In this paper, we propose a SDN architecture for industrial automation. Network design requirements are extracted from formal component specifications which support the generation of automatic network configurations. The proposed SDN architecture aims to leverage Industry 4.0 and Smart Factories, to bring together industrial automation installations with networking and Internet technologies.","PeriodicalId":231517,"journal":{"name":"2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125808797","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: 35

Versioning Architectures for Local and Global Memory 本地和全局内存的版本控制体系结构

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.71

H. Fujita, K. Iskra, P. Balaji, A. Chien

引用次数: 0

Cloud Based Monitoring of Timed Events for Industrial Automation 基于云的工业自动化定时事件监控

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.111

M. Wenger, Alois Zoitl, J. Blech, I. Peake, L. Fernando

引用次数: 10

Fusion: Privacy-Preserving Distributed Protocol for High-Dimensional Data Mashup 融合:高维数据混搭的隐私保护分布式协议

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.100

Gaby G. Dagher, Farkhund Iqbal, M. Arafati, B. Fung

引用次数: 10

Secrecy Outage Probability of Two-Path Successive Relaying in Physical Layer Security 物理层安全中双路径连续中继的保密中断概率

2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS) Pub Date : 2015-12-14 DOI: 10.1109/ICPADS.2015.103

Qian Yu Liau, C. Leow

{"title":"Secrecy Outage Probability of Two-Path Successive Relaying in Physical Layer Security","authors":"Qian Yu Liau, C. Leow","doi":"10.1109/ICPADS.2015.103","DOIUrl":"https://doi.org/10.1109/ICPADS.2015.103","url":null,"abstract":"Relaying is a promising technique to improve wireless physical-layer security. Existing literature shows that a full-duplex relay can further improve the secrecy capacity and secrecy outage probability compared to conventional half-duplex relay, but this comes at a price of sophisticated implementation. For sake of easy implementation, two-path successive relaying has been proposed to emulate the full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. To further confuse the eavesdropper, the source and relay are scheduled to transmit jamming signals at appropriate intervals. Analytical results on the secrecy outage probability reveals that the proposed protocol is able to deliver the target secrecy rate when the SNR of the eavesdropping channels are high. In addition, the secrecy outage probability of the proposed protocol is the joint secrecy outage probability of the relay pair. Numerical simulations show that the proposed protocol achieves the highest ergodic secrecy capacity and lowest secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes.","PeriodicalId":231517,"journal":{"name":"2015 IEEE 21st International Conference on Parallel and Distributed Systems (ICPADS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133106076","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: 0