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26th Annual Computational Neuroscience Meeting (CNS*2017) of the Organization for Computational Neuroscience Antwerp, Belgium, July 15-20, 2017

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 59-59页

作者： [Anonymous] Indiana University Purdue University Indianapolis Indianapolis IN 46032 USA Stark Neurosciences Research Institute Indiana University School of Medicine Indianapolis IN 46032 USA Department of Mathematics East Carolina University Greenville NC 27858 USA Jülich Supercomputing Centre Forschungszentrum Jülich 52425 Jülich Germany Future Systems Swiss National Supercomputing Centre 8092 Zurich Switzerland User Engagement and Support Swiss National Supercomputing Centre 6900 Lugano Switzerland Institut de Neurosciences des Systèmes Aix Marseille Univ 13005 Marseille France Simulation Lab Neuroscience Forschungszentrum Jülich Jülich Germany Department of Experimental Psychology Ghent University 9000 Ghent Belgium Donders Center for Cognitive Neuroimaging Radboud University 6525HR Nijmegen The Netherlands Department of Electrical Computer and Energy Engineering University of Colorado Boulder CO 80309 USA Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Otolaryngology Johns Hopkins School of Medicine Baltimore MD 21287 USA INSERM U968 Paris France Sorbonne Universités UPMC University Paris 06 UMR_S 968 Institut de la Vision Paris France CNRS UMR_7210 Paris France Department of Computer Architecture and Technology University of Granada (CITIC) Granada Spain Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Institut de la Vision Paris France Department of Adaptive Machine Systems Osaka University Osaka Japan Department of Computer Science University of Cergy-Pontoise Cergy-Pontoise France Department of Physics and Astronomy College of Charleston Charleston SC 29424 USA School of Physics Faculty of Science University of Sydney Sydney NSW 2006 Australia Center of Excellence for Integrative Brain Function Australian Research Council Sydney Australia Max Planck Institute for Human Cognitive and Brain Sciences Saxony Lei

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MALK: A MapReduce framework for high-efficiently processing large amount of keys

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Jisuanji Yanjiu yu Fazhan/Computer Research and Development 2014年第12期51卷 2711-2723页

作者： Zheng, Yasong Wang, Da Ye, Xiaochun Cui, Huimin Xu, Yuanchao Fan, Dongrui State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China College of Information Engineering Capital Normal University Beijing100048 China

The overhead of memory allocation is one of the major bottlenecks for shared-memory MapReduce, especially for the applications that have large amount of keys. In order to solve this problem, this paper presents a less memory consumption MapReduce, namely MALK, which can high-efficiently process applications with a large number of keys. Firstly, MALK succeeds in avoiding the constant allocations of massive small memory blocks by managing the discrete keys using contiguous area of storage. Secondly, MALK pipelines the process of Map-tasks and Reduce-tasks to decrease the active data in the system at the same time, and proposes a reusable mechanism of Hash table to reuse the memory space so as to avoid the memory reallocation of Hash table. What is more, MALK determines the suitable number of Reduce tasks, by evaluating the effect of task quantity and granularity on performance, to get optimal performance. The experiments show that, compared with Phoenix++, MALK achieves up to 3.8X higher speedup (average of 2.8X), and saves up to 95.2% memory in Map phase and 87.8% memory in Reduce phase. In addition, MALK reduces 30% waiting time with better load balance in Reduce phase, and cuts down more than 35% cache miss rate on average. ©, 2014, Science Press. All right reserved.

关键词： MapReduce

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Berth-Crane allocation model and algorithm of container berths in the uncertain environment

Advances in Intelligent Systems and Computing

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Advances in Intelligent Systems and computing 2013年 212卷 785-792页

作者： Liu, Jian-xin Du, Yu-yue Hong, Yong-fa Sun, Lin-lin College of Information Science Engineering Shandong University of Science and Technology Qingdao 266590 Shandong China The Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 200092 China College of Civil Engineering and Architecture SUST Qingdao 266590 Shandong China

ISBN: (纸本)9783642375019

According to the randomness of the vessel's arrival time and handling time, the establishment of a randomly-oriented environment container berths-crane allocation model, the optimizing goal is to minimize the average ship-waiting time. Taking into account the complexity of the model solution, this paper offers the design of an improved genetic algorithm to reduce the searching space, and according to the characteristics of the optimal solution. With testing example to verify that the model can simulate decision-making environment of berths-crane allocation problem and reflect the decision-maker's attitude toward risks and preferences. The algorithm can gain a stable and satisfactory solution within the operating time. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Genetic algorithms

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Berth-crane allocation model and algorithm of container berths in the uncertain environment

Berth-crane allocation model and algorithm of container bert...

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8th International Conference on Bio-Inspired computing: Theories and Applications, BIC-TA 2013

作者： Liu, Jian-Xin Du, Yu-Yue Hong, Yong-Fa Sun, Lin-Lin College of Information Science Engineering Shandong University of Science and Technology QingdaoShandong266590 China The Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai200092 China College of Civil Engineering and Architecture SUST QingdaoShandong266590 China

ISBN: (纸本)9783642375019

According to the randomness of the vessel’s arrival time and handling time, the establishment of a randomly-oriented environment container berths— crane allocation model, the optimizing goal is to minimize the average ship-waiting time. Taking into account the complexity of the model solution, this paper offers the design of an improved genetic algorithm to reduce the searching space, and according to the characteristics of the optimal solution. With testing example to verify that the model can simulate decision-making environment of berths— crane allocation problem and reflect the decision-maker’s attitude toward risks and preferences. The algorithm can gain a stable and satisfactory solution within the operating time. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Genetic algorithms

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Using energy criteria to admit flows in a wired network

Using energy criteria to admit flows in a wired network

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27h International Symposium on Computer and Information Sciences, ISCIS 2012

作者： Sakellari, Georgia Morfopoulou, Christina Mahmoodi, Toktam Gelenbe, Erol School of Architecture Computer Science Field Computing and Engineering University of East London London E16 2RD United Kingdom ISN Group Electrical and Electronic Engineering Department Imperial College London London SW7 2BT United Kingdom Division of Engineering Centre for Telecoms Research Kings College London London WC2R 2LS United Kingdom

Admission control in wired networks has been traditionally used as a way to control traffic congestion and guarantee quality of service. Here, we propose an admission control mechanism which aims to keep the power consumption at the lowest possible level by restricting the more energy-demanding users. This work relies on the fact that power consumption of networking devices, and of the network as a whole, is not proportional to the carried traffic, as would be the ideal case [1]. As a result some operating regions may be more efficient than others and "jumps" may arise in power consumption when new traffic is added in the network. The proposed mechanism aims to keep power consumption in the lowest possible power consumption level, hopping to the next level only when necessary. © 2013 Springer-Verlag London.

关键词： Electric power utilization

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Corrigendum to “Seismic response of steel fibre reinforced concrete beam–column joints” [Eng. Struct. 59 (2014) 261–283]

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engineering Structures 2014年 67卷 61-61页

作者： Ali A. Abbas Sharifah M. Syed Mohsin Demetrios M. Cotsovosc Ana M. Ruiz-Teran School of Architecture Computing and Engineering University of East London London E16 2RD UK Department of Civil and Environmental Engineering Imperial College London London SW7 2BU UK Institute of Infrastructure and Environment School of the Built Environment Heriot-Watt University Edinburgh EH14 4AS UK

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Hybrid approach of filtering unnecessary way accesses for set-associative caches

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Jisuanji Xuebao/Chinese Journal of Computers 2013年第4期36卷 799-808页

作者： Fan, Ling-Jun Xu, Yuan-Chao Shi, Wei-Song Fan, Dong-Rui Lou, Jie State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Science Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Department of Computer Science Wayne State University Detroit MI-48202 United States Intel Corporation Beijing 100190 China College of Information Engineering Capital Normal University Beijing 100048 China

Power has been a big issue in processor design for several years. Conventional popular approaches for addressing this issue like DVFS (Dynamic Voltage Frequency Scaling) now hit the law of diminishing returns. As multi/many-core processors becoming the main stream processors, caches account for more and more CPU die area and power, this paper presents using filtering unnecessary way accesses to reduce dynamic power consumption of caches shared by instruction and data. The methods include using Invalid Filter, which could eliminate accesses to cache ways contained invalid blocks, and I/D Filter, which could eliminate accesses to cache ways contained instruction/data access type mismatch blocks, and Tag-2 Filter, which could eliminate accesses to cache ways contained tag lowest 2 bits mismatch blocks. Since the methods reducing the activities happened in cache architecture, dynamical CPU power could be significantly decreased. In the paper, we also propose combining the above methods together, which is called Invalid+I/D+Tag-2 Filter, in an attempt to achieve better power saving results. We have verified the effectiveness and complementariness of the three proposed methods through analysis and experiments. Also, our evaluations show that, we could obtain 19.6%~47.8% (which is on average 34.3%) improvement on a 64KB-4way set-associative cache and 19.6%~55.2% (which is on average 39.2%) improvement on a 128KB-8way set-associative cache comparing to Invalid+I/D Filter, and 16.1%~27.7% (which is on average 16.6%) improvement on a 64KB-4way set-associative cache and 6.9%~44.4% (which is on average 25.0%) improvement on a 128KB-8way set-associative cache comparing to Invalid+Tag-2 Filter, respectively.

关键词： Bandpass filters

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An ontological approach to Building Information Model exchanges in the precast/pre-stressed concrete industry

An ontological approach to Building Information Model exchan...

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Construction Research Congress 2012: Construction Challenges in a Flat World

作者： Venugopal, Manu Eastman, Charles M. Teizer, Jochen School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta GA 30332 United States College of Architecture and Computing Georgia Institute of Technology Atlanta GA 30332 United States

ISBN: (纸本)9780784412329

Building Information Modeling realm is expanding with the advent of new technologies, processes and software for architecture, engineering, Construction and Facility Management industry. The importance of robust knowledge sharing between different stakeholders in a project is of highest priority in such scenarios. model diew definitions provides an empirical specification for the implementation of the Industry Foundation Class (IFC) schema by software companies. The objective of this research is to create an ontological framework, which makes the IFC definitions more formal and consistent. A formal specification of IFC entities to create taxonomy of classes and subclasses between them is adopted for this research. Such an approach will make model view specifications unambiguous and reusable thereby reducing the development time of model views. The precast/pre-stressed concrete industry is selected as the domain for the ontology definitions. Case studies developed illustrating the exchange of a fabrication model between architect/engineer, precast detailer and fabricator shows the feasibility of this approach. The outcome of this research provides the mechanism for applications such as modular MVDs, smart and complex querying of building models, making data sharing across applications simpler with limited rework. © 2012 ASCE.

关键词： Fabrication

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MAP-numa: Access patterns used to characterize the NUMA memory access optimization techniques and algorithms

MAP-numa: Access patterns used to characterize the NUMA memo...

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9th IFIP International Conference on Network and Parallel computing, NPC 2012

作者： Luo, Qiuming Liu, Chenjian Kong, Chang Cai, Ye Shenzhen China College of Computer Science and Software Engineering Shenzhen University China State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing China

ISBN: (纸本)9783642356056

Some typical memory access patterns are provided and programmed in C, which can be used as benchmark to characterize the various techniques and algorithms aim to improve the performance of NUMA memory access. These access patterns, called MAP-numa (Memory Access Patterns for NUMA), currently include three classes, whose working data sets are corresponding to 1-dimension array, 2-dimension matrix and 3-dimension cube. It is dedicated for NUMA memory access optimization other than measuring the memory bandwidth and latency. MAP-numa is an alternative to those exist benchmarks such as STREAM, pChase, etc. It is used to verify the optimizations' (made automatically/manually to source code/executive binary) capacities by investigating what locality leakage can be remedied. Some experiment results are shown, which give an example of using MAP-numa to evaluate some optimizations based on Oprofile sampling. © IFIP International Federation for Information Processing 2012.

关键词： Benchmarking

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Utilizing BIM to improve the concrete reinforcement supply chain

Utilizing BIM to improve the concrete reinforcement supply c...

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2012 ASCE International Conference on computing in Civil engineering

作者： Aram, S. Eastman, C. Sacks, R. College of Architecture Georgia Institute of Technology 723 Cherry St. NW Atlanta GA 30318 United States College of Architecture and Computing Georgia Institute of Technology 723 Cherry St. NW Atlanta GA 30318 United States Civil and Environmental Engineering Technion - Israel Institute of Technology Haifa32000 Israel

ISBN: (纸本)9780784412343

Using Building Information Modeling (BIM) for design, detailing, fabrication and erection of concrete reinforcement and automating information exchange throughout AEC projects potentially improves productivity of the reinforcement supply chain. This study first develops an information flow process map documenting the reinforcement supply chain activities, and identifying the contents of the reinforcement models, created and exchanged by different disciplines during various phases of a concrete project. Then the identified information items are used as a basis to assess the functionality of BIM tools for reinforcement. BIM tools are evaluated in four areas: design and modeling, editing, project and construction management, and interoperability. The IFC schema is chosen as the preferred medium to examine the interoperability capabilities of the evaluated BIM tools. Our study identified significant enhancements in 3D parametric modeling and information interoperability of concrete reinforcement. Despite these improvements, notable modeling and interoperability deficiencies in the reviewed BIM tools remain unsolved. These shortcomings impact the modeling outcome and hinder effective use of BIM reinforcing models generated in design during fabrication and construction management. Recommendations to improve the identified shortcomings in all the four reviewed areas are provided. © 2012 American Society of Civil Engineers.

关键词： Interoperability

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