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检索条件"任意字段=21st International Symposium on Computer Architecture and High Performance Computing"

共 1770 条记录，以下是101-110 订阅

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high Speed Video Processing Using Fine-Grained Processing on FPGA Platform

High Speed Video Processing Using Fine-Grained Processing on...

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21st Annual international IEEE symposium on Field-Programmable Custom computing Machines (FCCM)

作者： Ang, Zhi Ping Kumar, Akash Ha, Yajun Natl Univ Singapore Dept Elect & Comp Engn Singapore 117583 Singapore

ISBN: (纸本)9780769549699;9781467360050

This summary paper(1) proposes an FPGA-based array processor which performs Laplacian filtering on a 40 by 40 pixel grayscale video. The architecture comprises of bit-serial pixel processors interconnected to give a two-dimensional mesh array. This architecture features the novel use of partial reconfiguration which transfers data to and fro the array. Each processor occupies a configurable logic block and achieves a target frame rate of 10000 frames per second, at an operating frequency of 0.31 MHz on the Virtex-6 ML605 Evaluation Kit. The detailed correspondence between the contents of slice lookup tables and the Virtex-6 bitstream format is also documented.

关键词： Fine-grained FPGA computing high speed video processing Partial reconfiguration Bit-serial arithmetic

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Phase-Based Tasks Scheduling in Data Centers Powered Exclusively by Renewable Energy 31

Phase-Based Tasks Scheduling in Data Centers Powered Exclusi...

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31st international symposium on computer architecture and high performance computing (SBAC-PAD)

作者： Caux, stephane Renaud-Goud, Paul Rostirolla, Gustavo stolf, Patricia Univ Toulouse IRIT F-31062 Toulouse France Univ Toulouse Laplace UMR5213 INPT UPSCNRS Toulouse France

ISBN: (纸本)9781728141947

Data centers are considered nowadays as the factories of the digital age, being currently responsible for consuming more energy than the entire United Kingdom. On the other side, the global total capacity of renewable power increases continuously. The combination of these two factors calls for new approaches in designing data centers powered only by renewable energy sources. Our work focuses on task scheduling optimization under a power envelope, and on the way to handle power starvation, i.e. when the available power does not provide sufficient resources to execute a given workload. To do so we utilize the concept of task degradation through cross-correlation to find where to place the tasks in order to reduce the data center profit degradation. The results show that our algorithm could obtain more than 34% increase in profit when compared to algorithms from the literature, while fulfilling the power profile and resources constraints.

关键词： Scheduling Cloud computing Renewable Energy Mixed Workload

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Improving adaptive routing performance on large scale Megafly topology 21

Improving adaptive routing performance on large scale Megafl...

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21st IEEE/ACM international symposium on Cluster, Cloud and Internet computing (CCGrid)

作者： Newaz, Md Nahid Mollah, Md Atiqul Faizian, Peyman Tong, Zhou Oakland Univ Dept Comp Sci & Engn Rochester MI 48309 USA Florida State Univ Dept Comp Sci Tallahassee FL 32306 USA Wheaton Coll Dept Comp Sci Norton MA USA

ISBN: (纸本)9781728195865

The Megafly topology has recently been proposed as an efficient, hierarchical way to interconnect large-scale high performance computing systems. Megafly networks may be constructed in various group sizes and configurations, but it is challenging to maintain high throughput performance on all such variants. Therefore, a robust topology-specific adaptive routing scheme is needed to utilize the topological advantages of Megafly. Currently, Progressive Adaptive Routing (PAR) is the best known routing scheme for Megafly networks, but its performance is not fully known across all scales and configurations. In this work, we show that the current PAR scheme performs sub-optimally on Megafly networks with a large number of groups. As better alternatives, we propose a new practical adaptive routing schemes, KU-GCN, that can improve the communication performance of Megafly at any scale and configuration. With the use of trace-driven simulation experiments, we show that our new Megafly routing scheme performs well across a wide variety of topology-workload combinations and outperforms PAR by up to 43.5 percent on a topology with a large number of groups.

关键词： Cloud computing Adaptation models Adaptive systems Network topology high performance computing Routing Throughput

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Memory bandwidth prediction for HPC applications in NUMA architecture 21

Memory bandwidth prediction for HPC applications in NUMA arc...

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21st IEEE international Conference on high performance computing and Communications, 17th IEEE international Conference on Smart City and 5th IEEE international Conference on Data Science and Systems, HPCC/SmartCity/DSS 2019

作者： Salehian, Solmaz Lu, Lunjin Dept. Computer Science and Engineering Oakland University Rochester United States

ISBN: (纸本)9781728120584

This paper proposes a statistical method for memory bandwidth prediction in NUMA architecture. The memory bandwidth is expressed in terms of total transferred data per execution time. We first split memory bandwidth into components and measure data for each component separately. We then predict memory bandwidth for unknown values based on component measurements. Since memory bandwidth usage varies with problem size and the number of processors, we use these two values as parameters and perform the estimation in these two dimensions. This helps us to predict memory bandwidth usage for unknown problem sizes and processor numbers. This prediction method requires a few data points and it works dynamically without any source code inspection. We verified the approach in NUMA architecture for different regular and irregular high performance computing applications. The values for transferred data and elapsed time are analyzed for increasing input sizes and growing numbers of processors. Conclusions on memory bandwidth usage are derived from these data. © 2019 IEEE.

关键词： Bandwidth

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Mobility of data in distributed hybrid computing systems

Mobility of data in distributed hybrid computing systems

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21st international Parallel and Distributed Processing symposium, IPDPS 2007

作者： Faes, Philippe Christiaens, Mark stroobandt, Dirk Ghent University Sint-Pietersnieuwstraat 41 B-9000 Ghent Belgium Symantec Corporation Antwerpsesteenweg 19 B-9080 Lochristi Belgium

ISBN: (纸本)1424409101

In distributed hybrid computing systems, traditional sequential processors are loosely coupled with reconfigurable hardware for optimal performance. This loose coupling proves to be a communication challenge;the processor units cannot efficiently share a physical memory. This paper proposes a distributed shared memory architecture and a method for effective data migration within that shared memory. Data is moved using a novel garbage collection scheme, the dual semispace collector. The new garbage collector and the distributed memory prove to be an effective means of data migration in distributed hybrid computing systems. © 2007 IEEE.

关键词： Distributed computer systems

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Holistic design of multi-core architectures

Holistic design of multi-core architectures

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21st international Parallel and Distributed Processing symposium, IPDPS 2007

作者： Tullsen, Dean Department of Computer Science and Engineering University of California San Diego Computer Science and Engineering Department UCSD

ISBN: (纸本)1424409101

Several forces are driving the market to put multiple execution cores on a single processor chip. But we cannot view (or design) those cores (and the connections between them) in the same way we did when we lived in a uniprocessor world. Previously, we expected each core to provide good performance on virtually any application, with energy efficiency, and without error or failure. Now that the level of interface with the user and the system is a multi-core chip, those requirements need only be met at the chip level - no single core need meet them. This provides the opportunity to think about processor architecture in whole new ways. This talk will describe holistic design of a multi-core architecture ~ designing cores, caches, interconnect so that the chip as a whole provides maximum performance, high energy efficiency, and high performance per area. We will discuss, in particular, on-chip heterogeneous multiprocessing and conjoined core architectures. © 2007 IEEE.

关键词： computer architecture

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Design and Validation of Cloud storage Systems using Rewriting Logic 21

Design and Validation of Cloud Storage Systems using Rewriti...

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21st international symposium on Symbolic and Numeric Algorithms for Scientific computing (SYNASC)

作者： Olveczky, Peter Csaba Univ Oslo Dept Informat Oslo Norway

ISBN: (纸本)9781728157245

Most large modern-day applications (Facebook, Gmail, eBay, etc.) rely on widely distributed and replicated storage of data for scalability, availability, and disaster tolerance. Since maintaining high degrees of data consistency requires costly communication across distant sites, applications over such distributed and partially replicated data are complex artifacts that must carefully balance the required degrees of consistency and performance. In this paper I summarize work at the University of Illinois Assured Cloud computing center on using rewriting logic and its associated Maude tool environment to formally model and analyze both the correctness and the performance of state-of-the-art distributed transaction systems designs, as well as on how to automatically obtain a correct-by-construction distributed implementation of a promising design.

关键词： cloud computing distributed transaction systems formal methods LTL and statistical model checking performance estimation rewriting logic Maude correct-by-construction code generation

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A hybrid clustering algorithm for high-performance edge computing devices [Short] 21

A hybrid clustering algorithm for high-performance edge comp...

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21st IEEE international symposium on Parallel and Distributed computing (ISPDC)

作者： Laccetti, Giuliano Lapegna, Marco Romano, Diego Univ Naples Federico II Dept Math & Applicat Naples Italy CNR Inst High Performance Comp & Networking Naples Italy

ISBN: (数字)9781665488020

ISBN: (纸本)9781665488020

Clustering algorithms are efficient tools for discovering correlations or affinities within large datasets and are the basis of several Artificial Intelligence processes based on data generated by sensor networks. Recently, such algorithms have found an active application area closely correlated to the Edge computing paradigm. The final aim is to transfer intelligence and decision-making ability near the edge of the sensors networks, thus avoiding the stringent requests for low-latency and large-bandwidth networks typical of the Cloud computing model. In such a context, the present work describes a new hybrid version of a clustering algorithm for the NVIDIA Jetson Nano board by integrating two different parallel strategies. The algorithm is later evaluated from the points of view of the performance and energy consumption, comparing it with two high-end GPU-based computing systems. The results confirm the possibility of creating intelligent sensor networks where decisions are taken at the data collection points.

关键词： Edge computing hybrid parallelism clustering algorithms performance vs. energy consumption tradeoff

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A reconfigurable computing engine for wavelet transforms

A reconfigurable computing engine for wavelet transforms

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21st international Parallel and Distributed Processing symposium, IPDPS 2007

作者： Sun, Kang Pan, Xuezeng Ping, Lingdi College of Computer Science and Technology Zhejiang University Hangzhou 310027 China

ISBN: (纸本)1424409101

In the past a few years, wavelet transforms have become a hot topic of research. Discrete and continuous wavelet transforms have been widely used in signal and multimedia processing. Due to the high performance and flexibility of reconfigurable computing systems, it is very attractive to design a reconfigurable architecture for discrete and continuous wavelet transform of wide range of wavelet filters. In this paper, a unified computation framework for discrete and continuous wavelet transform based on lifting scheme and a reconfigurable architecture that includes reconfigurable lifting step arrays and reconfigurable address generator are proposed. The unified framework is the theory basis of this system. The step array is the computing core of this engine. And the address generator supports several memory scan pattern which is used to generate memory access addresses. In order to validate this architecture, an FPGA prototype is built based on Xilinx Virtexll FPGA to test the reconfiguration of 2-D discrete 5/3 and 9/7 transforms (defined in specification of JPEG2000) and 2-D continuous Haar wavelet transform. Furthermore, a 3-level decomposition for a 512×512 grayscale image is performed and the results show that the decomposition can be finished within 12.16ms when running at 20MHz. It can be concluded that this design is applicable and scalable. © 2007 IEEE.

关键词： Wavelet transforms

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Five years with the high productivity computing systems program - A perspective

Five years with the high productivity computing systems prog...

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21st international Parallel and Distributed Processing symposium, IPDPS 2007

作者： Elnozahy, Elmootazbellah IBM Research Austin TX United States

ISBN: (纸本)1424409101

For the past five years, I had the very enviable task of leading IBM's effort in DARPA's high Productivity computing Systems (HPCS) program. IBM competed successfully with other contestants in and survived two down-selects, producing along the way ground-breaking research for peta-scale systems aimed at changing the status quo in high end computing. The HPCS program is unique in that it states productivity as a broader definition of the system value than just performance. Commercial viability is another goal, meant to add realism and produce usable systems at the end of the program with productivity and performance goals that well exceed the projected improvements using today's technology. This unprecedented mix adds interesting and challenging constraints on the research program, and the traditional ways of approaching the problem do not apply. This talk will give an overview of the challenges of running projects of this kind, and gives a forward looking statement about the future of the program and its projected impact on the industry and the academic communities.

关键词： computer programming

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