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16th IEEE/ACM international conference on Utility and Cloud computing (UCC) / 10th IEEE/ACM international conference on Big Data computing, applications and technologies (BDCAT)

作者： Hu, Fei Mehta, Kunal Mishra, Shivakant AlMutawa, Mohammad Univ Colorado Boulder CO 80309 USA Kuwait Univ Khaldiya Kuwait

ISBN: (纸本)9798400702341

Edge computing has become a promising computing paradigm for building IoT (Internet of things) applications, particularly applications with latency and privacy constraints. However, these applications typically tend to be compute-intensive and compute resources are limited at the edge when compared to the cloud, so it is important to efficiently utilize all computing resources available at the edge. A key challenge in utilizing these resources is the scheduling of different computing tasks in a dynamically varying, highly hybrid computing environment. We describe the design, implementation, and evaluation of a dynamic distributed scheduler for the edge that constantly monitors the current state of the computing infrastructure and dynamically schedules various computing tasks to ensure that all application constraints are met in another paper. Based on that, this paper mainly proposes a profile evaluation method and results when applying an augmented reality application on distributed systems at the edge. With that work done, we propose and implement a good solution to efficiently distribute edge AI applications at the edge.

关键词： Edge computing AI applications distributed Systems Dynamic distributed Scheduler Containers

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Using semantic Web technologies to specify constraints of RBAC

Using semantic Web technologies to specify constraints of RB...

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6th international conference on parallel and distributed computing, applications and technologies (PDCAT 2005)

作者： Wu, D Lin, J Dong, YB Zhu, ML Zhejiang Univ Coll Comp Sci Hangzhou 310027 Peoples R China

ISBN: (纸本)0769524052

Role-based access control (RBAC) models have generated a great interest in the security community as a powerful and generalized approach to security management. One of important aspects in RBAC is constraints that constrain what components in RBAC are allowed to do. there are lots of research have been achieved to specify constraints for secure system developers. However more work is need urgently to met requirements for interoperability of machine and people understandable constraints specification in open and distributed environment. In this paper we propose another approach to specify constraints using Semantic Web technologies. the Web Ontology Language (OWL) specification of basic RBAC components and constraints are described in detail.

关键词： RBAC constraint Semantic Web OWL

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the Method of parallel Optimization and parallel Recognition Based on Data Dependence

The Method of Parallel Optimization and Parallel Recognition...

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3rd international Workshop on e-Activity (IWEA2009)/10th ACIS international conference on Software Engineering Artificial Intelligence, Networking and parallel/distributed computing

作者： Yan, Zhao Liu, Lei Ma, Li Jilin Univ Coll Comp Sci & Technol Changchun 130023 Peoples R China Beijing Inst Petrochem Technol Beijing Peoples R China

ISBN: (纸本)9780769536422

For application programs in scientific and technological fields have grown increasingly large and complex, it is becoming more difficult to parallelize these programs by hand using message-passing libraries. To reduce this difficulty, we are researching the compilation technology for serial program automatic parallelization. In this paper, the author puts forward a kind of parallel recognition algorithm in parallelization compiler. In the algorithm the author adopts the idea of the medium grain parallel. through this algorithm, the parallelization compiler can identify all of the parallelizable blocks. So that the application programs can be speeded lip and the execution ability call be improved when the blocks execute on multiprocessors. parallel processing often can make the run time of application programs shorter than serial processing, but if the radio of parallel workload to overhead about creating parallel thread or the radio of parallel workload to parallel thread number is small, parallel execution can degrades program performance. To solve this problem, the author proposes several parallel optimization approaches in the end of the paper.

关键词： medium grain parallel blocks parallel recognition data dependence parallel optimization

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PShare: Ensuring location privacy in non-trusted systems through multi-secret sharing

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PERVASIVE AND MOBILE computing 2013年第3期9卷 339-352页

作者： Wernke, Marius Duerr, Frank Rothermel, Kurt Univ Stuttgart Inst Parallel & Distributed Syst D-70569 Stuttgart Germany

Location-based applications such as Facebook Places, Foursquare, or Loopt typically use location services to manage mobile object positions. However, exposing precise user positions raises user privacy concerns, especially if location service providers are not fully trusted. To enable the secure management of private user positions in non-trusted systems, we present two novel position sharing approaches based on the concept of multi-secret sharing. We improve existing geometric position sharing approaches by Durr et al. [2] and Skvortsov et al. [3] by considering continuous position updates and by increasing the robustness against various attacks. Furthermore, we present the first position sharing approach for symbolic location models. (C) 2013 Elsevier B.V. All rights reserved.

关键词： Location-based applications Privacy Position sharing Location management

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Towards distributed Local Search through Neighborhood Combinators 10th

Towards Distributed Local Search Through Neighborhood Combin...

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10th international conference on Operations Research and Enterprise Systems (ICORES)

作者： Ospina, Gustavo De Landtsheer, Renaud CETIC Res Ctr Charleroi Belgium

ISBN: (纸本)9789897584855

this paper presents an approach for making local search algorithms distributed, to get speed improvements thanks to the growth both in multi-core hardware and the massive availability of distributed computing power, notably in the cloud. Local search algorithms rely on the exploration of neighborhoods on a given solution space model. Our distribution approach relies on the exploration of multiple neighborhoods in parallel, performed by different workers located on different CPU cores (locally or distributed). this approach relies on neighborhood combinators, which are composite neighborhoods built out of basic neighborhoods. Combinators allows us to introduce metaheuristics (restart, tabu search, simulated annealing), neighborhood selection (hill-climbing, round-robin) and handle search strategies. We propose some parallel search combinators that can be instantiated to build search strategies encompassing parallel neighborhood exploration. An implementation is proposed in the *** framework, using the Actor model of computation.

关键词： parallelization Multi-core Akka Local Search Combinatorial Optimization OscaR.cbls

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Implementation and Optimization of AES Algorithm on the Sunway TaihuLight 17

Implementation and Optimization of AES Algorithm on the Sunw...

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17th international conference on parallel and distributed computing, applications and technologies (PDCAT)

作者： Chen, Yuedan Li, Kenli Fei, Xiongwei Quan, Zhe Li, Keqin Hunan Univ Coll Comp Sci & Elect Engn Changsha 410082 Hunan Peoples R China Natl Supercomp Ctr Changsha Changsha 410082 Hunan Peoples R China SUNY Coll New Paltz Dept Comp Sci New Paltz NY 12561 USA

ISBN: (纸本)9781509050819

With the rapid development of information technology, the security of massive amounts of digital data has attracted huge attention in recent years. In this paper, we provide an efficient parallel implementation of the Advanced Encryption Standard (AES) algorithm, a widely used symmetrical block encryption algorithm, based on the Sunway TaihuLight. the Sunway TaihuLight is a China's independently developed heterogeneous supercomputer with peak performance over 100 PFlops. We also optimize the parallel implementation of the AES algorithm based on the Sunway TaihuLight to achieve more optimized performance. the optimization of the parallel AES algorithm in a single SW26010 node is provided. Specifically, we expand the scale to 1024 nodes and achieve the throughput of about 63.91 GB/s (511.28 Gbits/s). Our parallel implementation of the AES algorithm has great parallel scalability and the speedup ratio can be very high with the number of nodes increasing.

关键词： Advanced Encryption Standard (AES) parallelism the Sunway TaihuLight Many-core Speedup through-put parallel Scalability

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Blockchain Security Attack: A Brief Survey 10

Blockchain Security Attack: A Brief Survey

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10th international conference on computing, Communication and Networking technologies (ICCCNT)

作者： Anita, N. Vijayalakshmi, M. Thiagarajar Coll Engn Dept Comp Sci & Engn Madurai Tamil Nadu India

ISBN: (纸本)9781538659069

Blockchain technology has attracted various areas like corporations, education, government, and healthcare because of its unhackable security features. In spite of common arguments about the occurrence of Blockchain technology in terms of security and privacy, in reality, several attacks can be launched against them. this paper presents a comprehensive survey of the most vulnerable Blockchain attacks and the different approaches proposed against these attacks. this paper also provides taxonomy of attacks, which are most challengeable to Blockchain security key features. Additionally, a review of the countermeasures, which have offered solutions to avoid these attacks, has been presented.

关键词： Blockchain Attacks distributed transactions distributed Denial of Service 51% attack Challenges

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Analyzing Metadata Performance in distributed File Systems

Analyzing Metadata Performance in Distributed File Systems

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10th international conference on parallel computing technologies

作者： Biardzki, Christoph Ludwig, thomas Bayer Akad Wissensch LRZ Boltzmannstr 1 D-85748 Garching Germany German Climate Comp Ctr DKRZ D-20146 Hamburg Germany

ISBN: (纸本)9783642032745

the performance of metadata processing in large distributed file systems currently presents larger challenges than scaling of data throughput. the paper presents a novel, distributed benchmark called DMetabench for measuring the performance of metadata operations (e.g. file creation). DMetabench runs in environments with potentially thousands of nodes and allows an assessment of the scalability of metadata operations. Additionally, precise run-tune performance data is preserved which allows for a better understanding of performance artifacts. Validation results from production file systems at the Leibniz Supercomputing Centre (LRZ) are provided and discussed. Possible applications of knowledge about metadata performance scaling include the choice of an optimal parallelization strategy for metadata-itensive workload in a specific runtime environment.

关键词： distributed file system metadata benchmark

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Arithmetic-logic unit of multicore chip for image processing

Arithmetic-logic unit of multicore chip for image processing

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10th IEEE international conference on Emerging eLearning technologies and applications (ICETA)

作者： Vokorokos, L. Dankova, E. Chovanec, M. Tech Univ Dept Comp & Informat Kosice Slovakia Tech Univ Kosice Inst Comp Technol Kosice Slovakia

ISBN: (纸本)9781467351225;9781467351201

Computer vision is a field of computer science which recently received increasingly to the fore. To accelerate computing in image processing can be used specialized processors that work on the principle of accelerators. Designed arithmetic-logic unit is a processor module, which executes image processing based on the selected instruction. the parallel design of arithmetic-logic unit can also accelerate image processing.

关键词： Image processing computer science PROCESSOR Accelerators Multi-core processors images computer vision acceleration Computer chips DNA Microarrays parallel design

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How to build bargaining agents in the e-commerce modeling and analysis

How to build bargaining agents in the e-commerce modeling an...

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6th international conference on parallel and distributed computing, applications and technologies (PDCAT 2005)

作者： Chen, YL Wang, XJ Ye, C Zhu, WQ Wuhan Univ Inst Syst Engn Hubei 430072 Peoples R China

ISBN: (纸本)0769524052

the paper presents the pricing strategies for automatic agent, which is design for e-commerce in the reality. Given the characters of e-commerce in reality, the paper firstly model the bargaining process;Secondly classify the bargaining scenarios and present the optimal bargaining strategy under sub-incomplete information for corresponding bargaining scenarios;then extend them to the optimal pricing strategies under incomplete information condition;thirdly, discuss the conditions for convergence of optimal strategy;Finally, the analysis shows that the bargaining strategic profiles form the sequential equilibrium and the agreement is unique under certain conditions.

关键词： Pricing Protocols Design engineering Systems engineering and theory Convergence Information analysis Electronic commerce distributed computing

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