NDLI: Window memory accesses method in alternate row/column matrix access systems

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2010 2nd International Conference on Computer Engineering and Technology

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Window memory accesses method in alternate row/column matrix access systems

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Volume 2 - 2010

Volume 1 - 2010

2009 International Conference on Computer Engineering and Technology

Window memory accesses method in alternate row/column matrix access systems

Content Provider	IEEE Xplore Digital Library
Author	Jie Zhou Yong Dou Yuanwu Lei Yazhuo Dong
Copyright Year	2010
Description	Author affiliation: Unit 91655 People's Republic of China Beijing, China (Yazhuo Dong) \|\| National Laboratory for Parallel & Distributed Processing, National University of Defense Technology, Changsha, China (Jie Zhou; Yong Dou; Yuanwu Lei)
Abstract	Many systems, such as Synthetic Aperture Radar (SAR) processing, two-dimensional image processing, 2d-FFT calculation, need access the row and column data of their matrix alternately. The DRAM memory should be used due to huge data in these systems. To improve the usage of memory bandwidth in such systems, this paper theoretically analyses the optimal window size to minimize the total number of opening/closing pages when performing in such instances by balancing the number of handling physical pages between row and column accesses. This paper presents a window-based optimal memory access method, and we implemented an FPGA-based SDRAM controller with eight simple ports, which is based on window accessing mechanism and supports commercialized SDARM. The experimental results show that the effective I/O bandwidth of external SDRAM using our window layout approach increases from 114.2MB/s of naive implementation to 730.2MB/s with over 6X speedup. In addition, we implemented two SAR processing systems with four FFT processing elements using our window-based SDRAM controller and Corner Turn method separately in FPGA chip. Results show window-based method can achieve a speedup of 2.6 compared to Corner Turn method.
File Size	342372
File Format	PDF
ISBN	9781424463473
e-ISBN	9781424463497
DOI	10.1109/ICCET.2010.5485834
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image processing Random access memory Optimal control Bandwidth Control systems Performance analysis SDRAM Synthetic aperture radar Commercialization Field programmable gate arrays
Content Type	Text
Resource Type	Article

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