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19th international conference on Principles of distributed systems, OPODIS 2015

ISBN: (纸本)9783939897989

the proceedings contain 35 papers. the topics discussed include: signature-free communication and agreement in the presence of byzantine processes;dynamic reconfiguration: a tutorial;time to change: on distributed computing in dynamic networks;space bounds for reliable storage: fundamental limits of coding;approximation of distances and shortest paths in the broadcast congest clique;the cost of global broadcast in dynamic radio networks;bounds for blind rate adaptation;overcoming obstacles with ants;distributed sparse cut approximation;distributed approximation of k-service assignment;the relative power of composite loop agreement tasks;loosely-stabilizing leader election on arbitrary graphs in population protocols without identifiers nor random numbers;and a heap-based concurrent priority queue with mutable priorities for faster parallel algorithms.

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An enhanced parallel loop self-scheduling scheme for cluster environments

An enhanced parallel loop self-scheduling scheme for cluster...

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19th international conference on Advanced Information Networking and Applications, AINA 2005

作者： Yang, Chao-Tung Cheng, Kuan-Wei Li, Kuan-Ching High-Performance Computing Laboratory Department of Computer Science and Information Engineering Tunghai University Taichung City 40704 Taiwan Parallel and Distributed Processing Center Department of Computer Science and Information Management Providence University Taichung County 43301 Taiwan

ISBN: (纸本)0769522491

In this paper, a parallel loop self-scheduling scheme for heterogeneous PC cluster systems is proposed. though the proposed scheme does allow users to choose parameters before the execution initialization phase, there are still weaknesses that motivate us to go further with new improvements in that scheme. For instance, a decision on a fixed and monotonous parameter can easily lead to invalid schedule by using previous input information. thus, it is proposed in this paper a new scheme, where the scheduling parameter can be adjusted dynamically and fit into most widely available computer systems, in order to provide higher overall performance. © 2005 IEEE.

关键词： Scheduling

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Issues and Algorithm of distributed Shared Memory 4

Issues and Algorithm of Distributed Shared Memory

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4th international conference on Innovative computing (ICIC)

作者： Ahmad, Mian Basam Sagheer, Sundas Univ Management & Technol Dept Comp Sci Lahore Pakistan Univ Management & Technol Dept Software Engn Lahore Pakistan

ISBN: (纸本)9781665400916

Internet of things is a rapidly growing industry, and there are more connected devices than humans. there are unlimited internet of things devices around us. the scope of these devices has increased manifold in recent years in different areas like healthcare, unmanned vehicles, automatic monitoring systems, and smart homes, etc. these connected devices produce lots of data that need to be processed to achieve the goal of automation in daily life. the cloud provides many centralized solutions to process data using powerful resources in real-time, but there could be latency issues due to increased network traffic. So a distributed solution is much needed to meet this growing demand of processing data in parallel. In this paper, we propose a distributed shared memory [18] abstraction for the internet of things that uses a graph-aware partitioning algorithm and uses smart message passing techniques to process data in distributed and parallel fashion [19].

关键词： Internet of things

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FLEX-MPI: An MPI Extension for Supporting Dynamic Load Balancing on Heterogeneous Non-dedicated systems

FLEX-MPI: An MPI Extension for Supporting Dynamic Load Balan...

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19th international conference on Euro-Par

作者： Martin, Gonzalo Marinescu, Maria-Cristina Singh, David E. Carretero, Jesus Univ Carlos III Madrid Leganes 28911 Spain Barcelona Supercomp Ctr Barcelona 08034 Spain

ISBN: (纸本)9783642400476

this paper introduces FLEX-MPI, a novel runtime approach for the dynamic load balancing of MPI-based SPMD applications running on heterogeneous platforms in the presence of dynamic external loads. To effectively balance the workload, FLEX-MPI monitors the actual performance of applications via hardware counters and the MPI profiling interface-with a negligible overhead and minimal code modifications. Our results show that by using this approach the execution time of an application may be significantly reduced.

关键词： Dynamic load balancing distributed computing heterogeneous systems hardware counters

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Experiments Using a Software-distributed Shared Memory, MPI and 0MQ over Heterogeneous computing Resources

Experiments Using a Software-Distributed Shared Memory, MPI ...

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26th international conference on parallel and distributed computing (Euro-Par)

作者： Cudennec, Loic Trabelsi, Kods CEA LIST PC 172 F-91191 Gif Sur Yvette France DGA MI Dept Artificial Intelligence BP 7 F-35998 Rennes Armees France

ISBN: (纸本)9783030715939;9783030715922

distributed heterogeneous computing systems escalate the problem of choosing the appropriate programming model. Programming models such as message passing are efficient but require low-level management of communications. Higher level of programming such as shared memory are convenient for the application design but they usually have performance issues. With the recent development of distributed heterogeneous systems and new protocols to access remote memories, there is an opportunity for distributed shared memory systems to offer a satisfying level of abstraction while not giving up on performance. In this paper a video processing application is written using MPI, 0MQ and an in-house software-distributed shared memory (S-DSM) backend and deployed over a set of heterogeneous computing boards. Results show that 0MQ implementation is the most efficient but at the price of writing the application with the targeted platform in mind. the S-DSM implementation runs up to 2 times faster than the pure OpenMPI implementation and competes with 0MQ when the data granularity is small.

关键词： Heterogeneous computing distributed computing distributed shared memory Message passing

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Scalable distributed Data Anonymization

Scalable Distributed Data Anonymization

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19th IEEE international conference on Pervasive computing and Communications (IEEE PerCom)

作者： di Vimercati, Sabrina De Capitani Facchinetti, Dario Foresti, Sara Oldani, Gianluca Paraboschi, Stefano Rossi, Matthew Samarati, Pierangela Univ Milan Milan Italy Univ Bergamo Bergamo Italy

ISBN: (纸本)9781665404242

We present an approach for enabling a distributed anonymization process over large collections of sensor data. Our approach anonymizes large datasets (which might not fit in main memory) using an arbitrary number of workers within the Spark framework. We describe how to parallelize the anonymization process through a proper partitioning of the dataset. Our experimental evaluation shows that the proposed approach is scalable and do not affect the quality of the anonymized dataset.

关键词： Large dataset

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Combining thread throttling and Mapping to Optimize the EDP of parallel Applications 29

Combining Thread Throttling and Mapping to Optimize the EDP ...

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29th Euromicro international conference on parallel, distributed and Network-Based Processing (PDP)

作者： Berned, Gustavo P. Medeiros, thiarles S. Serpa, Matheus Rossi, Fabio D. Luizelli, Marcelo C. Navaux, Philippe O. Beck, Antonio Carlos S. Lorenzon, Arthur F. Fed Inst Educ Sci & Technol Farroupilha Santa Maria RS Brazil Univ Fed Rio Grande do Sul Inst Infonnat Porto Alegre RS Brazil Fed Univ Pampa Campus Alegrete Bage RS Brazil

ISBN: (纸本)9781665414555

thread-throttling and mapping strategies have been used together to make better use of hardware resources and improve the energy-delay product (EDP) of high-performance computing (HPC) systems. However, the design space exploration significantly grows with the increasing number of cores in those systems, making the task of finding the ideal number of active threads and allocating strategy a challenging task. On top of that, parallel applications present various patterns, such as irregularity, unbalanced computations, or high rates of communications. Given these considerations, we propose ETTM, an EDP-aware thread-throttling and mapping optimization strategy that automatically finds an ideal combination of number of threads and thread mapping strategy. With the execution of eighteen well-known benchmarks on three multicore architectures, we show that EDP can be significantly improved when running applications with the solution found by EETM1 .

关键词： thread-level parallelism thread mapping Energy-delay product

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A process model for managing requirement change

A process model for managing requirement change

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4th iasted international conference on Advances in Computer Science and Technology, ACST 2008

作者： Imtiaz, Saima Ikram, Naveed Imtiaz, Salma Mohammad Ali Jinnah University Islamabad Pakistan International Islamic University Islamabad Pakistan

ISBN: (纸本)9780889867307

Managing continuously changing requirements is adifficult and time consuming task in large projects. Change management if not done properly often leads toproject failure. Requirement Change Management (RCM) process models are surveyed and evaluated on the criteria of roles, activities, artifacts and representation which are fundamental and necessary for a good process model. this evaluation is extended to update the work already done in literature. the deficiencies present in current RCM literature are highlighted. the ontology for process model has already been proposed elsewhere. Using that ontology we propose an RCM process model in this paper. this RCM process model improves upon the deficiencies identified, and it also introduces some new concepts. the process is modeled using UML activity diagram. the purpose of the process model is to provide a more complete and detailed guideline than already present. It will help the practitioners to effectively manage requirement change in large projects.

关键词： Ontology

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2014 19th international conference on Methods and Models in Automation and Robotics, MMAR 2014

2014 19th International Conference on Methods and Models in ...

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2014 19th international conference on Methods and Models in Automation and Robotics, MMAR 2014

ISBN: (纸本)9781479950812

the proceedings contain 165 papers. the topics discussed include: minimum energy control of positive electrical circuits;a PSO-optimized type-2 fuzzy logic controller for navigation of multiple mobile robots;integrated phases modular fuzzy logic control with spiral dynamic optimization for stair descending in a wheelchair;development of a therapeutic exercise robot for wrist and forearm rehabilitation;dynamic model and analysis of distributed control system algorithms of three wheel vehicle;modelling and simulation of a surge arrester in the physical domain;heuristic to tune the compensation gain of modeling uncertainties through the robust multi inversion;time-varying IIR multi-notch filter based on all-pass filter prototype;parallel distributed downsampled spatio-temporal track-before-detect algorithm;improved fractional Kalman filter for variable order systems with lossy and delayed network;and modeling and identification of a fractional-order discrete-time SISO Laguerre-Wiener system.

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Leader and Leaderless Multi-Layer Consensus With State Obfuscation: An Application to distributed Speed Advisory systems

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IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION systems 2018年第3期19卷 711-721页

作者： Griggs, Wynita Russo, Giovanni Shorten, Robert Univ Coll Dublin Sch Elect Elect & Commun Engn Dublin 4 Ireland IBM Dublin Technol Campus Optimizat & Control Grp IBM Res Ireland Dublin 15 Ireland

Two new distributed speed advisory systems (SASs) are introduced in this paper. the systems implement consensus algorithms that guide a set of vehicles toward a common driving speed. A major innovation is that consensus is achieved over a multi-layer network, in which parallel network topologies of connected vehicles are superimposed. the reason for the use of these parallel networks is that, in this way, the state obfuscation is possible, with the benefit that common driving speed is attained with no vehicle knowing the exact state of other vehicles. Convergence of the SASs is formally proved and two new results for the consensus of multi-layer networks modeled via stochastic differential equations are introduced. the SASs are also validated via simulation and via a hardware-in-the-loop setup, in which a real vehicle interacts with simulated entities.

关键词： Automotive applications advanced driver assistance algorithm design and analysis decentralized control systems simulation

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