Báo cáo hóa học: " Editorial Transforming Signal Processing Applications into Parallel Implementations"
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- Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007, Article ID 95760, 2 pages doi:10.1155/2007/95760 Editorial Transforming Signal Processing Applications into Parallel Implementations Ed F. Deprettre,1 Roger Woods,2 Ingrid Verbauwhede,3 and Erwin de Kock4 1 Leiden Embedded Research Center, Leiden University, Niels Bohrweg 1, 2333 CA Leiden, The Netherlands 2 School of Electronics, Electrical Engineering and Computer Science, ECIT Institute, Queens Island, Queens Road, BT3 9DT Belfast, Ireland 3 Katholieke Universiteit Leuven, ESAT-COSIC, Kasteelpark Arenberg 10, 3001 Leuven, Belgium 4 NXP Semiconductors, High Tech Campus 46, 5656 AE Eindhoven, The Netherlands Received 9 August 2007; Accepted 9 August 2007 Copyright © 2007 Ed F. Deprettre et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Improving silicon technology has offered the possibility of in minutes thereby allowing extensive exploration of the de- heterogeneous platforms involving multiple multiprocessors, sign space. DSP processors, and FPGAs, but the key issue is the cre- In “Self-timed scheduling analysis for real-time appli- ation of the methodologies and tools that allow designers cations,” O. M. Moreira and M. J. G. Bekooij describe an to quick and efficient map complex DSP systems onto such approach that uses multirate dataflow graphs (MRDFs) to platforms. Typically, these design processes will involve ap- schedule the tasks of a hard real-time streaming application plication modeling and development of transformations for onto a multiprocessor system-on-chip. They extended the mapping these application models onto hardware architec- temporal analysis of self-time scheduling (STS) for MRDF ture models against some key performance criteria such as graphs to model not only the average throughput but latency timing, area, or power consumption. as well. This allows the maximum latency to be determined The purpose of this special issue is to highlight work for jobs with periodic, sporadic, and bursty sources. The ap- which addresses the limitations in mapping from the appli- proach is demonstrated for a simplified channel equalizer cation model onto the architecture model for complex DSP and a wireless LAN receiver. systems. These are not addressed in current design tool offer- In “Development and evaluation of high-performance ings to any great extent and issues include automatic transla- image decorrelation algorithms for the nonalternating 3D ´ tion of features in application specific models such as tokens wavelet transform,” E. Moyano-Avila et al. show that by ex- and actors into “architecture model” specific expressions; ex- ploiting the inherent features of the application and the com- ploration of algorithmic parallelism in such a way to make puting platforms they can achieve speedups in performance. it match hardware platforms and development of transfor- They describe the implementation of a standard three- mations to reduce energy consumption and area against a dimensional wavelet transform on an SGI Origin 38000, throughput budget. shared memory supercomputer and show that by partition- The papers addresses a number of topics ranging from ing the video sequences into groups and by implementing model of computation (MoC) representations through to parallel versions of the algorithms, a workload distribution strategy can be deployed efficiently to distribute the work- tools to explore realizations from SystemC descriptions. In “SPRINT: a tool to generate concurrent transaction load across several processors. level models from sequential code,” J. Cockx et al. describe In “Exploiting the expressiveness of cyclo-static dataflow a tool to generate a concurrent SystemC transaction level to model multimedia implementations,” K. Denolf et al. look model from sequential code. Using this tool, different par- at the design of complex multimedia systems using MoC allelization alternatives were evaluated during the design of descriptions. They show how cyclo-static dataflow (CSDF) an MPEG-4 simple profile encoder and an embedded zero makes a suitable MoC and show how “implementation spe- tree coder. With their approach, generation was carried out cific” aspects can be expressed using CSDF. In particular, they
- 2 EURASIP Journal on Advances in Signal Processing She is a Senior Member of IEEE and Member of the IEEE Signal look at buffer requirements and demonstrate their approach Processing Society technical committee on Design and Implemen- for an MPEG-4 video encoder. tation of Signal Processing Systems. Ed F. Deprettre Erwin de Kock is a Principal Engineer at Roger Woods NXP Semiconductors in the area of sys- Ingrid Verbauwhede tem design methodology. He has 12 years Erwin de Kock experience in this area while being em- ployed by Philips Research and NXP Semi- conductors. He has worked amongst oth- ers on scheduling of real-time video sig- nal processing systems, multiprocessor pro- Ed F. Deprettre was born in Roeselare, Belgium, on August 10, gramming, programming models, program 1944. He is Fellow of the IEEE. He recieved the M.S. degree from transformation, and multiprocessor system the University of Ghent, Ghent, Belgium, in 1968, and the Ph.D. integration. Currently, Erwin is an Architect for the ESL IP integra- degree from the Delft University of Technology, Delft, The Nether- tion environment within NXP Semiconductors. He also represents lands, in 1981. 1980–1999, he was a Professor at the Department the company in the ESL Working Group of The SPIRIT Consor- of Electrical Engineering, Circuits and Systems section, Signal Pro- tium. Erwin holds M.S. and Ph.D. degrees in computer science. cessing Group. From January 1st, 2000, he is Professor at the Leiden He has published over 25 papers and he has served in technical Institute of Advances Computer Sciences, Leiden University, Lei- program committees of several conferences including DATE and den, The Netherlands, where he is Head of the Leiden Embedded CODES+ISSS. Research Center. His current research interests are in system level design of embedded systems, in particular for signal, image, and video processing applications, including wireless communications and multimedia. He is editor and coeditor of 4 books and several special issues of international journals. He is on the editorial board of 3 journals. Roger Woods is a Professor at Queen’s Uni- versity Belfast and leads the Programmable Systems Laboratory. He received his BS.c. in electrical and electronic engineering and his Ph.D. from the same university in 1985 and 1990, respectively. His current research interests include system-level design flows and applications of programmable systems. He was General Chair of the FPL 2001 and the IEE’s FPGA Developer’s Forum in 2003 and 2005 and technical program committee cochair of 2005 IEEE IWVDVT workshop and 2008 Applied Reconfigurable Conference (ARC). He is on the program committee of conferences including SIPS, FCCM, FPL, FPT, ARC, and VLSIDAT. He has published over 130 scientific papers and holds a number of patents in the real-time implementation of digital filters. He is a Fellow of the IET and a Se- nior Member of IEEE. Ingrid Verbauwhede ’s interests include cir- cuits, processor architectures, and design methodologies for real-time embedded sys- tems in security, cryptography, digital sig- nal processing, and wireless communica- tions. This includes the influence of new technologies and new circuit solutions on the design of next generation systems-on- chip. She received her Electrical Engineer- ing degree and Ph.D. degree from the K. U. Leuven in Belgium. She is currently a Professor there and an Adjunct Professor at UCLA. At K. U. Leuven, she is Codirector of the COSIC (Computer Security and Industrial Cryptography) lab. She was the Program Chair in 2002 and the General Chair in 2003 for the ACM/IEEE ISLPED conference, is the Program Chair for 2007 CHES conference, and was on the executive com- mittee of the 42nd and 43rd DAC as the Design Community Chair.
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