检索结果-内蒙古大学图书馆

23th international conference on Architecture of computing Systems 2010, ARCS 2010

ISBN: (纸本)9783800732227

The proceedings contain 52 papers. The topics discussed include: improved bitonic sorting by wire elimination;parallel join processing on graphics processors for the resource description framework;modeling data distribution for two-phase flow problems by weighted graphs;distributed vision graph update in mobile vision networks;routing based on evolved agents;a block device driver for parallel and fault-tolerant storage;operating system processor scheduler design for future chip multiprocessor;evaluation and refinement of a tuning tool for grid applications;platform-independent modeling of explicitly parallel programs;and delivering guidance information in heterogeneous systems.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Peer-to-peer networks and collective intelligence: The case for agency

Peer-to-peer networks and collective intelligence: The case ...

引用

5th international conference on P2P, parallel, Grid, Cloud and Internet computing, 3PGCIC 2010

作者： Hill, Richard Antonopoulos, Nikos Distributed and Intelligent Systems Research Group University of Derby Derby United Kingdom

ISBN: (纸本)9780769542379

The vast quantity of data contributed and consumed via the Internet provides an environment where Collective Intelligence (CI) can emerge. This article considers CI in relation to the Peer-to-Peer (P2P) paradigm, an environment that has the necessary conditions for the generation of large data sets through frequent peer interactions. We then examine the characteristics of agency and relate agent computing to the conditions required to facilitate CI in P2P systems. Furthermore, we present a key research challenge for the community and propose an approach to scrutinise CI in a P2P scenario that makes use of local primitive behaviours to infer the likely collective emergent behaviours for a particular system. © 2010 IEEE.

关键词： Peer to peer networks

来源：评论

学校读者我要写书评

暂无评论

An Energy-Efficient distributed Algorithm for Minimum-Latency Aggregation Scheduling in Wireless Sensor networks

An Energy-Efficient Distributed Algorithm for Minimum-Latenc...

引用

international conference on distributed computing Systems (ICDCS 2010)

作者： Li, Yingshu Guo, Longjiang Prasad, Sushil K. Georgia State Univ Dept Comp Sci Atlanta GA 30303 USA

ISBN: (纸本)9780769540597

Data aggregation is an essential yet time-consuming task in wireless sensor networks (WSNs). This paper studies the well-known Minimum-Latency Aggregation Schedule (MLAS) problem and proposes an energy-efficient distributed scheduling algorithm named Clu-DDAS based on a novel cluster-based aggregation tree. Our approach differs from all the previous schemes where Connected Dominating Sets or Maximal Independent Sets are employed. We prove that Clu-DDAS has a latency bound of 4R' + 2 Delta - 2, where. is the maximum degree and R' is the inferior network radius which is smaller than the network radius R. Clu-DDAS has comparable latency as the previously best centralized algorithm E-PAS, while Clu-DDAS consumes 78% less energy as shown by the simulation results. Clu-DDAS outperforms the previously best distributed algorithm DAS whose latency bound is 16R' + Delta - 14 on both latency and energy consumption. On average, Clu-DDAS transmits 67% fewer total messages than DAS does. We also propose an adaptive strategy for updating the schedule to accommodate dynamic network topology.

关键词： Cluster-based Aggregation Tree MLAS Inferior Network Radius Maximum Degree

来源：评论

学校读者我要写书评

暂无评论

parallel RETRIEVAL OF DENSE VECTORS IN THE VECTOR SPACE MODEL

引用

computing AND INFORMATICS 2011年第2期30卷 247-265页

作者： Berka, Tobias Vajtersic, Marian Salzburg Univ Dept Comp Sci A-5020 Salzburg Austria Slovak Acad Sci Inst Math Dept Informat Bratislava Slovakia

Modern information retrieval systems use distributed and parallel algorithms to meet their operational requirements, and commonly operate on sparse vectors;but dimensionality-reducing techniques produce dense and relatively short feature vectors. Motivated by this relevance of dense vectors, we have parallelized the vector space model for dense matrices and vectors. Our algorithm uses a hybrid partitioning splitting documents and features and operates on a mesh of hosts holding a block partitioned corpus matrix. We show that the theoretic speed-up is optimal. The empirical evaluation of an MPI-based implementation reveals that we obtain a super-linear speed-up on a cluster using Nehalem Xeon CPUs.

关键词： Vector space model symmetric multiprocessing dense vector computations message passing interface

来源：评论

学校读者我要写书评

暂无评论

distributed minimum transmission multicast routing protocol for wireless sensor networks

Distributed minimum transmission multicast routing protocol ...

引用

international conference on parallel Processing

作者： Cheng, Long Das, Sajal K. Cao, Jiannong Chen, Canfeng Ma, Jian State Key Lab of Networking and Switching Tech. Beijing Univ. of Posts and Telecomm. China University of Texas at Arlington United States Department of Computing Hong Kong Polytechnic University Hong Kong Hong Kong Nokia Research Center Beijing China

ISBN: (纸本)9780769541563

Energy efficient multicast routing is one of the fundamental problems in wireless sensor networks (WSNs). Previous work has shown that when the goal is to find multicast trees with minimum transmission cost, the problem becomes NP-complete. In this work, we present a heuristic distributed minimum transmission multicast routing protocol (MTMRP) for WSNs. By introducing the biased backoff scheme and taking advantage of the broadcast nature of wireless communication, MTMRP chooses the forwarding routes which can connect more multicast receivers. Moreover, MTMRP introduces a path handover scheme, which can prune redundant routes for multicast routing. As a result, the multicast transmission cost is reduced in a distributed manner. We conduct extensive evaluations to study the performance of the proposed MTMRP compared with existing protocols. Simulation results demonstrate that our scheme effectively improves the multicast routing energy efficiency. © 2010 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

Coordinated selective rejuvenation for distributed services

Coordinated selective rejuvenation for distributed services

引用

16th IEEE international conference on parallel and distributed Systems, ICPADS 2010

作者： Tian, Guanhua Meng, Dan Institute of Computing Technology Chinese Academy of Science China Graduate University Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9780769543079

Service availability and QoS, in terms of customer affecting performance metrics, is crucial for service systems. However, the increasing complexity in distributed service systems introduce hidden space for software faults, which undermine system availability, leading to fault or even down time. In this paper, we introduce a composition technique, Coordinated Selective Rejuvenation, to automate the whole procession of fault component identification and rejuvenation arbitration, in order to guarantee distributed service system's customer-affecting metrics. We take evaluation with fault injection experiment on RUBiS, which simulates distributed eCommerce of ***. The results indicate that our request path analysis approach and system model technique are effective for fault component's location, Bayesian network technique is feasible for fault pinpointing, in terms of request tracing context. Meanwhile, the arbitration scheme, can effectively guarantee system QoS, by identifying and rejuvenating most likely performance fault tier, before the degradation of customer affecting performance metric become severe. © 2010 IEEE.

关键词： Bayesian networks

来源：评论

学校读者我要写书评

暂无评论

Safe and Stabilizing distributed Cellular Flows

Safe and Stabilizing Distributed Cellular Flows

引用

international conference on distributed computing Systems (ICDCS 2010)

作者： Johnson, Taylor Mitra, Sayan Manamcheri, Karthik Univ Illinois Dept Elect & Comp Engn Coordinated Sci Lab Urbana IL 61801 USA

ISBN: (纸本)9780769540597

Advances in wireless vehicular networks present us with opportunities for developing new distributed traffic control algorithms that avoid phenomena such as abrupt phase transitions. Towards this end, we study the problem of distributed traffic control in a partitioned plane where the movement of all entities (vehicles) within each partition (cell) is tightly coupled. We present a distributed traffic control protocol that guarantees minimum separation between vehicles at all times, even when some cells' control software may fail. Once failures cease, the protocol is guaranteed to stabilize and the vehicles with feasible paths to a target cell make progress towards it. The algorithm relies on two general principles: temporary blocking for maintenance of safety and local geographical routing for guaranteeing progress. Our proofs use mostly assertional reasoning and may serve as a template for analyzing other safe and stabilizing distributed traffic control protocols. We also present simulation results which provide estimates of throughput as a function of vehicle velocity, safety separation, path complexity, and failure-recovery rates.

关键词： Vehicles

来源：评论

学校读者我要写书评

暂无评论

FENet: An SDN-Based Scheme for Virtual Network Management 20

FENet: An SDN-Based Scheme for Virtual Network Management

引用

20th IEEE international conference on parallel and distributed Systems (ICPADS)

作者： Liu, Kun Wo, Tianyu Cui, Lei Shi, Bin Xu, Jie Beihang Univ State Key Lab Software Dev Environm Beijing Peoples R China Univ Leeds Sch Comp Leeds W Yorkshire England

ISBN: (纸本)9781479976157

Virtual networking is vital to efficient resource management in Clouds, and it is in fact one of the main services provided by many Cloud computing platforms. Virtual network management needs to meet specific requirements, including tenant isolation and adaption to virtual machines' lifecycle. Most of the existing schemes for virtual network management are based on the use of overlay networks in order to achieve a desirable degree of flexibility. However, these schemes suffer from a common limit, i.e. relatively high performance penalty due to a complicated forwarding process. We address this performance concern by developing a new management scheme, FENet, which makes use of Software-Defined networks (SDN) to create virtual networks and manage them via the SDN controller programs. We present the design of an SDN controller, with the definition of flow entry rules based on the OpenFlow protocol and the specification of a routing algorithm. The results from our experimental evaluation show that our SDN-based prototype can control virtual network interconnections and tenant isolation appropriately. FENet achieves about 30% better network performance than the management scheme based on OpenVPN and lower latency in comparison with the traditional bridging scheme.

关键词： Cloud computing OpenFlow SDN tenant isolation virtual networks

来源：评论

学校读者我要写书评

暂无评论

Making human connectome faster: GPU acceleration of brain network analysis

Making human connectome faster: GPU acceleration of brain ne...

引用

16th IEEE international conference on parallel and distributed Systems, ICPADS 2010

作者： Wu, Di Wu, Tianji Shan, Yi Wang, Yu He, Yong Xu, Ningyi Yang, Huazhong Department of Electronic Engineering Tsinghua National Laboratory for Information Science and Technology Tsinghua University China State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal University China Microsoft Research Asia Hardware Computing Group China

ISBN: (纸本)9780769543079

The research on complex Brain networks plays a vital role in understanding the connectivity patterns of the human brain and disease-related alterations. Recent studies have suggested a noninvasive way to model and analyze human brain networks by using multi-modal imaging and graph theoretical approaches. Both the construction and analysis of the Brain networks require tremendous computation. As a result, most current studies of the Brain networks are focused on a coarse scale based on Brain Regions. networks on this scale usually consist around 100 nodes. The more accurate and meticulous voxel-base Brain networks, on the other hand, may consist 20K to 100K nodes. In response to the difficulties of analyzing large-scale networks, we propose an acceleration framework for voxel-base Brain Network Analysis based on Graphics Processing Unit (GPU). Our GPU implementations of Brain Network construction and modularity achieve 24x and 80x speedup respectively, compared with single-core CPU. Our work makes the processing time affordable to analyze multiple large-scale Brain networks. © 2010 IEEE.

关键词： Graphics processing unit

来源：评论

学校读者我要写书评

暂无评论

Cloud computing Research and Development Trend

Cloud Computing Research and Development Trend

引用

2nd international conference on Future networks (ICFN 2010)

作者： Zhang, Shuai Zhang, Shufen Chen, Xuebin Huo, Xiuzhen Hebei Polytech Univ Coll Sci 46 Xinhua W St Tangshan 063009 Hebei Province Peoples R China Tangshan 2 Middle Sch Tangshan 063000 Hebei Province Peoples R China

ISBN: (纸本)9780769539409

With the development of parallel computing, distributed computing, grid computing, a new computing model appeared. The concept of computing comes from grid, public computing and SaaS. It is a new method that shares basic framework. The basic principles of cloud computing is to make the computing be assigned in a great number of distributed computers, rather then local computer or remoter server. The running of the enterprise's data center is just like Internet. This makes the enterprise use the resource in the application that is needed, and access computer and storage system according to the requirement. This article introduces the background and principle of cloud computing, the character, style and actuality. This article also introduces the application field the merit of cloud computing, such as, it do not need user's high level equipment, so it reduces the user's cost. It provides secure and dependable data storage center, so user needn't do the awful things such storing data and killing virus, this kind of task can be done by professionals. It can realize data share through different equipments. It analyses some questions and hidden troubles, and puts forward some solutions, and discusses the future of cloud computing. Cloud computing is a computing style that provide power referenced with IT as a service. Users can enjoy the service even he knows nothing about the technology of cloud computing and the professional knowledge in this field and the power to control it.

关键词： Cloud computing SAAS Google Apps Grid computing

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：