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High Performance Computing on SpiNNaker Neuromorphic Platform: a Case Study for Energy Efficient Image processing 35

High Performance Computing on SpiNNaker Neuromorphic Platfor...

引用

35th IEEE international Performance Computing and Communications conference (IPCCC)

作者： Sugiarto, Indar Liu, Gengting Davidson, Simon Plana, Luis A. Furber, Steve B. Univ Manchester Sch Comp Sci Oxford Rd Manchester M13 9PL Lancs England

ISBN: (纸本)9781509052523

This paper presents an efficient strategy to implement parallel and distributed computing for image processing on a neuromorphic platform. We use SpiNNaker, a many-core neuromorphic platform inspired by neural connectivity in the brain, to achieve fast response and low power consumption. Our proposed method is based on fault-tolerant fine-grained parallelism that uses SpiNNaker resources optimally for process pipelining and decoupling. We demonstrate that our method can achieve a performance of up to 49.7 MP/J for Sobel edge detector, and can process 1600 x 1200 pixel images at 697 fps. Using simulated Canny edge detector, our method can achieve a performance of up to 21.4 MP/J. Moreover, the framework can be extended further by using larger SpiNNaker machines. This will be very useful for applications such as energy-aware and time-critical-mission robotics as well as very high resolution computer vision systems.

关键词： Image processing

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HI-Pass: A computer-Aided synthesis system for maximally parallel digital signal processing asics

HI-Pass: A computer-Aided synthesis system for maximally par...

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1992 IEEE international conference on Acoustics, Speech, and Signal processing, ICASSP 1992

作者： Duncan, Phillip Swamy, Shobana Sprouse, Steve Potasz, Daniel Jain, Rajeev Gafter, Neal Cammack, William Wong, Viwan Ciass, Wanda UCLA LOS AngelesCA90024 United States Texas Instruments DallasTX75265 United States

ISBN: (纸本)0780305329

Hi-PASS, a CAD system for DSP architccturc synthesis, has been developed to automatically producc maximally parallel VLSI designs for real-Time applications. The target DSP application} are the class for which desired sample rates are so high that time sharing of hardware is not feasible. Hi-PASS accepts a C code description of the design to be synthesized and produces a structural description of the final design, which can be fabricated using standard cells provided by the I-Agcr IV silicon assembly system. Hi-PASS is a collection of modular tools, several of which contain new techniques within the field of synthesis C code is converted into a flowgraph using a technique known as symbolic interpretation, including new methods for handling certain types of input-dependent control flow. The HOPS program is a heuristic search flowgraph optimizer tailored for the arithmetic intensive structures necessary for real-Time DSP applications. The high throughput rates necessary for these applications also require that retiming be used to provide very short inter- delay times. A new retiming tool has been developed which allows for computationally efficient bit-level retiming. © 1992 IEEE.

关键词： Digital signal processing

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CAMELOT: A FLEXIBLE, distributed TRANSACTION processing SYSTEM.

CAMELOT: A FLEXIBLE, DISTRIBUTED TRANSACTION PROCESSING SYST...

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Digest of Papers - Compcon Spring 88: Intellectual Leverage, Thirty-Third IEEE Computer Society international conference.

作者： Spector, Alfred Z. Pausch, Randy F. Bruell, Gregory Carnegie-Mellon Univ Pittsburgh PA USA Carnegie-Mellon Univ Pittsburgh PA USA

ISBN: (纸本)0818608285

The Camelot Project has constructed a distributed transaction facility intended to support widespread use of transaction processing techniques. Camelot executes on a variety of uni- and multiprocessors on top of the Unix-compatible, Mach operating system. The authors describe the design decisions that make Camelot a flexible, easy-to-use system and briefly describe Camelot's programming interfaces and algorithms. They discuss two applications of Camelot: an implementation of distributed ET-1 and a graphical room reservation system that uses the X Window Manager.

关键词： Computer systems, Digital

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DITA: distributed In-Memory Trajectory Analytics 18

DITA: Distributed In-Memory Trajectory Analytics

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44th ACM SIGMOD international conference on Management of Data

作者： Shang, Zeyuan Li, Guoliang Bao, Zhifeng Tsinghua Univ Beijing Peoples R China Brown Univ Providence RI 02912 USA RMIT Univ Melbourne Vic Australia

ISBN: (纸本)9781450317436

Trajectory analytics can benefit many real-world applications, e.g., frequent trajectory based navigation systems, road planning, car pooling, and transportation optimizations. Existing algorithms focus on optimizing this problem in a single machine. However, the amount of trajectories exceeds the storage and processing capability of a single machine, and it calls for large-scale trajectory analytics in distributed environments. The distributed trajectory analytics faces challenges of data locality aware partitioning, load balance, easy-to-use interface, and versatility to support various trajectory similarity functions. To address these challenges, we propose a distributed in-memory trajectory analytics system DITA. We propose an effective partitioning method, global index and local index, to address the data locality problem. We devise cost-based techniques to balance the workload. We develop a filter-verification framework to improve the performance. Moreover, DITA can support most of existing similarity functions to quantify the similarity between trajectories. We integrate our framework seamlessly into Spark SQL, and make it support SQL and DataFrame API interfaces. We have conducted extensive experiments on real world datasets, and experimental results show that DITA outperforms existing distributed trajectory similarity search and join approaches significantly.

关键词： Trajectories

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Communication Characterization and Optimization of applications Using Topology-Aware Task Mapping on Large Supercomputers 16

Communication Characterization and Optimization of Applicati...

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7th ACM/SPEC international conference on Performance Engineering (ICPE)

作者： Sreepathi, Sarat D'Azevedo, Ed Philip, Bobby Worley, Patrick Oak Ridge Natl Lab Oak Ridge TN 37831 USA

ISBN: (纸本)9781450340809

On large supercomputers, the job scheduling systems may assign a non-contiguous node allocation for user applications depending on available resources. With parallel applications using MPI (Message Passing Interface), the default process ordering does not take into account the actual physical node layout available to the application. This contributes to non-locality in terms of physical network topology and impacts communication performance of the application. In order to mitigate such performance penalties, this work describes techniques to identify suitable task mapping that takes the layout of the allocated nodes as well as the application's communication behavior into account. During the first phase of this research, we instrumented and collected performance data to characterize communication behavior of critical US DOE (United States - Department of Energy) applications using an augmented version of the mpiP tool. Subsequently, we developed several reordering methods (spectral bisection, neighbor join tree etc.) to combine node layout and application communication data for optimized task placement. We developed a tool called mpiAproxy to facilitate detailed evaluation of the various reordering algorithms without requiring full application executions. This work presents a comprehensive performance evaluation (14,000 experiments) of the various task mapping techniques in lowering communication costs on Titan, the leadership class supercomputer at Oak Ridge National Laboratory.

关键词： Communication Characterization Reordering algorithms Topology-Aware Optimization

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1989 IEEE international conference on Systems, Man, and Cybernetics. Part 1 (of 3) 1989 IEEE international conference on Systems, Man, and Cybernetics. Part 2 (of 3) 1989 IEEE international conference on Systems, Man, and Cybernetics. Part 3 (of 3)

1989 IEEE International Conference on Systems, Man, and Cybe...

引用

1989 IEEE international conference on Systems, Man, and Cybernetics

The proceedings contains 274 paper in three volumes. The following topics are dealt with: adaptive and learning systems;cognitive aspects of decision making;knowledge-based systems;telerobotics for space applications;machine vision;decision support systems;applications of control in large-scale systems;signal and image processing;biological cybernetics;expert systems and fuzzy models;manual control;computer vision;robotic manipulators;distributed data fusion and control;human-computer interfaces;biological and medical systems;supervisory control;and tools and techniques for systems engineering.

关键词： Systems science and cybernetics

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Unleashing CPU-GPU Acceleration for Control Theory applications

Unleashing CPU-GPU Acceleration for Control Theory Applicati...

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18th international conference on Euro-Par parallel processing

作者： Benner, Peter Ezzatti, Pablo Quintana-Orti, Enrique S. Remon, Alfredo Max Planck Inst Dynam Complex Tech Syst D-39106 Magdeburg Germany Univ Republica Inst Computac Montevideo 300 Uruguay Univ Jaume 1 Dpto Ingn Ciencia Computadores E-12071 Castellon de La Plana Spain

ISBN: (纸本)9783642369490

In this paper we review the effect of two high-performance techniques for the solution of matrix equations arising in control theory applications on CPU-GPU platforms, in particular advanced optimization via look-ahead and iterative refinement. Our experimental evaluation on the last GPU-generation from NVIDIA, "Kepler", shows the slight advantage of matrix inversion via Gauss-Jordan elimination, when combined with look-ahead, over the traditional LU-based procedure, as well as the clear benefits of using mixed precision and iterative refinement for the solution of Lyapunov equations.

关键词： Control theory matrix equations matrix inversion multicore processors graphics processors

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Multiresolutional maneuvering target tracking with average interpolation and parallel implementation

Multiresolutional maneuvering target tracking with average i...

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2006 CIE international conference on Radar, ICR 2006

作者： Luping, Xu Dajun, Feng School of Electronic Engineering Xidian University

ISBN: (纸本)0780395824

The difficulty for tracking maneuver target is to decide whether a maneuver occurs and when the target begins to maneuver. Since target tracking is a real time problem, the crucial factor is to detect the target maneuver as accurately and quickly as possible. A new approach for the maneuvering target tracking is presented, especially for the target maneuver detection in heavy noise. The algorithm is based on the criterion where the maneuver detection delay is made minimum, which replaces the original measurements by those of the average interpolation to reduce the delay to avoid tracker divergence, and uses wavelet transforms to increase the probability of detection. However, it requires much more computation time, which may be critical in a real-time application. With parallel processing techniques, a parallel implementation of the algorithm is also proposed by multibus computer system with three CPUs. Simulation results show that our scheme has the superior performance than conventional algorithms especially for tracking maneuvering targets in heavy noise, while approaching the same computation time as those. The algorithm has great potential for real-time applications. ©2006 IEEE.

关键词： Radar target recognition

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A Low-cost Fault Tolerance Technique in Multi-media applications through Configurability

A Low-cost Fault Tolerance Technique in Multi-media Applicat...

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13th international conference on Quality Software (QSIC)

作者： Tan, Lanfang Tan, Ying Natl Lab Parallel & Distributed Proc Changsha Hunan Peoples R China Comp Sch Sichuan Univ Chengdu Peoples R China

ISBN: (纸本)9780769550398

As chip densities and clock rates increases, processors are becoming more susceptible to transient faults that affect program correctness. Therefore, fault tolerance becomes increasingly important in computing system. Two major concerns of fault tolerance techniques are: a) improving system reliability by detecting transient errors and b) reducing performance overhead. In this study, we propose a configurable fault tolerance technique targeting both high reliability and low performance overhead for multi-media applications. The basic principle is applying different levels of fault tolerance configurability, which means that different degrees of fault tolerance are applied to different parts of the source codes in multi-media applications. First, a primary analysis is performed on the source code level to classify the critical statements. Second, a fault injection process combined with a statistical analysis is used to assure the partition with regards to a confidence degree. Finally, checksum-based fault tolerance and instruction duplication are applied to critical statements, while no fault tolerance mechanism is applied to non-critical parts. Performance experiment results demonstrate that our configurable fault tolerance technique can lead to significant performance gains compared with duplicating all instructions. The fault coverage of this scheme is also evaluated. Fault injection results show that about 90% of outputs are application-level correctness with just 20% of runtime overhead.

关键词： application-level correctness configurable fault tolerance critical multi-media applications checksum

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On-line automatic resource configuration for distributed applications

On-line automatic resource configuration for distributed app...

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2009 2nd international conference on Computer Science and Its applications, CSA 2009

作者： Liu, Hao Sørensen, Søren-Aksel Nazir, Amril Department of Computer Science University College London United Kingdom

ISBN: (纸本)9781424449460

A key problem in executing performance critical applications on distributed computing environments (e.g. the Grid) is the selection of resources. Research related to "automatic resource selection" aims to allocate resources on behalf of users to optimize the execution performance. However, most of current approaches are based on the static principle (i.e. resource selection is performed prior to execution) and need detailed application-specific information. In the paper, we introduce a novel on-line automatic resource selection approach. This approach is based on a simple control theory: the application continuously reports the Execution Satisfaction Degree (ESD) to the middleware Application Agent (AA), which relies on the reported ESD values to learn the execution behavior and tune the computing environment by adding/replacing/deleting resources during the execution in order to satisfy users' performance requirements. We introduce the Desired processing Capability Estimation learning policy to enable AA to learn and tune the computing environment based on the approach. A Mandelbrot computation and a Bulk Synchronization parallel (BSP) computation are performed to show the effectiveness of the approach. © 2009 IEEE.

关键词： Middleware

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