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2011 5th Latin-American symposium on Dependable Computing, LADC 2011

作者： De Araújo Macêdo, Raimundo José Freitas, Allan Edgard Silva De Sá, Alírio Santos Computer Science Departament Campus de Ondina Federal University of Bahia 40170-110 Salvador Brazil Federal Institute of Bahia Campus de Salvador 40301-015 Salvador Bahia Brazil

ISBN: (纸本)9780769543208

In order to provide upper-layer applications with continuous message delivery and updated information on membership changes - due to process failures, leaves and joins -, group communication protocols must exchange messages and continuously monitor all group members, which in certain load conditions may incur unacceptable message overhead to the underlying communication system. therefore, the design of such protocols must deal with the trade-off between performance requirements such as speed (e.g., delivery latency) and cost (e.g., message overhead). However, when the behavior of the computing environment is unknown and can change over time, or when the application requirements can dynamically change, self-configuring is a basic issue that is usually ignored in existing implementations. In this paper we present the design, implementation and evaluation of a novel self-manageable group communication protocol based on the feedback control theory, which is capable of self-configuring its operation parameters at run-time from previously specified requirements such as resource consumption. © 2011 ieee.

关键词： Economic and social effects

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IPDPS 2011 Wednesday 25th Year Panel: What's ahead?

IPDPS 2011 Wednesday 25th Year Panel: What's ahead?

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International symposium on parallel and distributed processing (IPDPS)

作者： Per Stenström Doug Burger Wen-mei Hwu Vipin Kumar Kunle Olukotun David Padua Burton Smith Chalmers University of Technology Sweden

Summary form only given, as follows. parallel computing has become ubiquitous and relates to challenging computational problems in science via business-driven computing to mobile computing. the scope has widened dramatically over the last decade. this panel will debate and speculate on how the parallel computing landscape is expected to change in the years to come. Areas of focus will include: (1) Computing platforms: How will we be able to maintain the performance growth of the past and what will be the major challenges in the next 10 years and beyond that? What technical barriers are anticipated and what disruptive technologies are behind the corner? (2) Software: How will software infrastructures evolve to meet performance requirements in the next 10 years and beyond? How will we ever be able to hide parallelism obstacles for the masses and what is the road forward towards that? (3) Algorithms: What will be the major computational problems to tackle in the next 10 years and beyond? What are the most challenging algorithmic problems to solve? (4) Applications: What will be the next wave of grand challenge problems to focus on in the next 10 years and beyond? What will be the major performance driving applications in the general and mobile computing domains? A record of the panel discussion was not made available for publication as part of the conference proceedings.

关键词： parallel processing Mobile computing distributed processing Disruptive technologies Software Roads Software algorithms

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proceedings of the 16th international workshop on high-level parallel programming models and supportive environments

IEEE International Symposium on Parallel and Distributed Pro...

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ieee International symposium on parallel and distributed processing Workshops and Phd Forum 2011年 1139-1140页

作者： Hoefler, Torsten Eigenmann, Rudolf Gerndt, Michael Müller, Frank Rasmussen, Craig Schulz, Martin Alam, Sadaf Balaji, Pavan Barrett, Richard Bode, Brett Bosilca, George Bronevetsky, Greg Danalis, Anthony De Supinski, Bronis Ding, Chen Fahringer, thomas Ishikawa, Yutaka Knüpfer, Andreas Mohr, Bernd Scholz, Sven-Bodo Skjellum, Tony Snir, Marc Tillier, Fabian Larsson, Jesper Willcock, Jeremiah Wolf, Felix Blue Waters Directorate NCSA University of Illinois Urbana-Champaign United States Purdue University United States Technische Universität München Germany North Carolina State University United States Los Alamos National Laboratory United States Lawrence Livermore National Laboratory United States Swiss National Supercomputing Centre Switzerland Argonne National Laboratory United States Sandia National Laboratories United States National Center for Supercomputing Applications United States University of Tennessee Knoxville United States University of Rochester United States University of Innsbruck Austria University of Tokyo Japan Technische Universität Dresden Germany Forschungszentrum Jülich Germany University of Herfordshire United Kingdom University of Alabama Birmingham United States University of Illinois Urbana-Champaign United States Microsoft United States Träff University of Vienna Austria Indiana University United States German Research School for Simulation Sciences Germany

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Autonomous Decentralized Community System for provision of service-assurance to local majority users

Autonomous Decentralized Community System for provision of s...

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International Workshop on Assurance in distributed Systems and Networks

作者： Mahmood, Khalid Takahashi, Hiro Lu, Xiaodong Mori, Kinji DTS Inc. 3-39-5 HigashiUeno Taitou-ku Tokyo Japan Department of Computer Science Tokyo Institute of Technology 2-12-1 Ookayama Meguro Tokyo 152-8552 Japan

ISBN: (纸本)9780769543499

Community Context-attribute-centric Collaborative Information Environment (CCCIE) enables provision of services to users with same interests, by employing time-awareness and demand-oriented perspective to transform one to one (1-1), one dimensional location based service paradigm to one to many(1-N), n-dimensional situation-aware community services. Unlike conventional Location Based Services (LBS) which involve selection of most suitable service either by manipulating location context at centralized server, or context-aware selection among all discovered services at service-consumer logic (at end node), the circumspect design of Autonomous Decentralized Community System (ADCS) framework empowers the transparent access of right service to right users at right place and right time, in highly dynamic ubiquitous environment by collaborative decentralized processing of various surrounding contexts like traffic and weather conditions, topographic features of towns and service validity time etc.

关键词： Location based services

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ON thE PERFORMANCE AND COST OF SOME PRAM MODELS ON CMP HARDWARE

ON THE PERFORMANCE AND COST OF SOME PRAM MODELS ON CMP HARDW...

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10th Workshop on Advances in parallel and distributed Computational Models/22nd ieee International parallel and distributed processing symposium

作者： Forsell, Martti VTT Tech Res Ctr Finland Platform Architectures Team FI-90571 Oulu Finland

ISBN: (纸本)9781424416943

the parallel Random Access Machine is a very strong model of parallel computing that has resisted cost-efficient implementation attempts for decades. Recently, the development of VLSI technology has provided means for indirect on-chip implementation, but there are different variants of the PRAM model that provide different performance, area and power figures and it is not known how their implementations compare to each others. In this paper we measure the performance and estimate the cost of practical implementations of four PRAM models including EREW, Limited Arbitrary CRCW, Full Arbitrary CRCW, Full Arbitrary Multioperation CRCW on our Eclipse chip multiprocessor framework. Interestingly, the most powerful model shows the lowest simulation cost and highest performance/area and performance/power figures.

关键词： parallel computing PRAM performance silicon area power consumption

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Massively parallel cuckoo pattern matching applied for NIDS/NIPS

Massively parallel cuckoo pattern matching applied for NIDS/...

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5th ieee International symposium on Electronic Design, Test and Applications, DELTA 2010

作者： thinh, Tran Ngoc Kittitornkun, Surin Faculty of Computer Science and Engineering Ho Chi Minn City University of Technology Ho Chi Minn City Viet Nam Dept. of Computer Engineering Faculty of Engineering KMITL Bangkok 10520 Thailand

ISBN: (纸本)9780769539782

this paper describes a Cuckoo-based Pattern Matching (CPM) engine based on a recently developed hashing algorithm called Cuckoo Hashing. We implement the improved parallel Cuckoo Hashing suitable for hardware-based multi-pattern matching with arbitrary length. CPM can rapidly update the static pattern set without reconfiguration while consuming the lowest amount of hardware. With the power of massively parallel processing, the speedup of CPM is up to 128X as compared with serial Cuckoo implementation. Compared to other hardware systems, CPM is far better in performance and saves 30% of the area. © 2010 ieee.

关键词： Field programmable gate arrays (FPGA)

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Algorithm engineering for scalable parallel external sorting

Algorithm engineering for scalable parallel external sorting

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24th ieee International parallel and distributed processing symposium, IPDPS 2010

作者： Sanders, Peter Karlsruher Institut für Technologie Karlsruhe Germany

ISBN: (纸本)9781424464432

the talk describes algorithm engineering (AE) as a methodology for algorithmic research where design, analysis, implementation and experimental evaluation of algorithms form a feedback cycle driving the development of efficient algorithm. Additional important components of the methodology include realistic models, algorithm libraries, and collections of realistic benchmark instances. We use one main example throughout this paper: sorting huge data sets using many multi-core processors and disks. the described system is the current record holder for the GraySort and MinuteSort sorting benchmarks. © 2010 ieee.

关键词： Sorting

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proceedings of the 2010 ieee International symposium on parallel and distributed processing, IPDPS 2010

Proceedings of the 2010 IEEE International Symposium on Para...

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24th ieee International parallel and distributed processing symposium, IPDPS 2010

ISBN: (纸本)9781424464432

the proceedings contain 128 papers. the topics discussed include: distributed advance network reservation with delay guarantees;a general algorithm for detecting faults under the comparison diagnosis model;broadcasting on large scale heterogeneous platforms under the bounded multi-port model;on the importance of bandwidth control mechanisms for scheduling on large scale heterogeneous platforms;scalable failure recovery for high-performance data aggregation;high performance comparison-based sorting algorithm on many-core GPUs;improving the performance of Uintah: a large-scale adaptive meshing computational framework;optimizing and tuning the fast multipole method for state-of-the-art multicore architectures;first experiences with congestion control in infiniband hardware;power-aware MPI task aggregation prediction for high-end computing systems;and a hybrid interest management mechanism for peer-to-peer networked virtual environments.

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parallel external memory graph algorithms

Parallel external memory graph algorithms

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24th ieee International parallel and distributed processing symposium, IPDPS 2010

作者： Arge, Lars Sitchinava, Nodari Goodrich, Michael T. MADALGO University of Aarhus Aarhus Denmark University of California - Irvine Irvine CA United States

ISBN: (纸本)9781424464432

In this paper, we study parallel I/O efficient graph algorithms in the parallel External Memory (PEM) model, one of the private-cache chip multiprocessor (CMP) models. We study the fundamental problem of list ranking which leads to efficient solutions to problems on trees, such as computing lowest common ancestors, tree contraction and expression tree evaluation. We also study the problems of computing the connected and biconnected components of a graph, minimum spanning tree of a connected graph and ear decomposition of a biconnected graph. All our solutions on a P-processor PEM model provide an optimal speedup of parallel I/O complexity and parallel computation time, compared to the single-processor external memory counterparts. ©2010 ieee.

关键词： Trees (mathematics)

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A local, distributed constant-factor approximation algorithm for the dynamic facility location problem

A local, distributed constant-factor approximation algorithm...

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24th ieee International parallel and distributed processing symposium, IPDPS 2010

作者： Degener, Bastian Kempkes, Barbara Pietrzyk, Peter Heinz Nixdorf Institute Computer Science Department University of Paderborn 33095 Paderborn Germany

ISBN: (纸本)9781424464432

We present a distributed, local solution to the dynamic facility location problem in general metrics, where each node is able to act as a facility or a client. To decide which role it should take, each node keeps up a simple invariant in its local neighborhood. this guarantees a global constant factor approximation when the invariant is satisfied at all nodes. Due to the changing distances between nodes, invariants can be violated. We show that restoring the invariants is bounded to a constant neighborhood, takes logarithmic (in the number of nodes) asynchronous rounds and affects each node at most twice per violation. © 2010 ieee.

关键词： Approximation algorithms

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