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2003
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Exploring the VLSI Scalability of Stream Processors

10 years 4 months ago
Exploring the VLSI Scalability of Stream Processors
Stream processors are high-performance programmable processors optimized to run media applications. Recent work has shown these processors to be more area- and energy-efficient than conventional programmable architectures. This paper explores the scalability of stream architectures to future VLSI technologies where over a thousand floating-point units on a single chip will be feasible. Two techniques for increasing the number of ALUs in a stream processor are presented: intracluster and intercluster scaling. These scaling techniques are shown to be cost-efficient to tens of ALUs per cluster and to hundreds of arithmetic clusters. A 640-ALU stream processor with 128 clusters and 5 ALUs per cluster is shown to be feasible in 45 nanometer technology, sustaining over 300 GOPS on kernels and providing 15.3x of kernel speedup and 8.0x of application speedup over a 40-ALU stream processor with a 2% degradation in area per ALU and a 7% degradation in energy dissipated per ALU operation.
Brucek Khailany, William J. Dally, Scott Rixner, U
Added 01 Dec 2009
Updated 01 Dec 2009
Type Conference
Year 2003
Where HPCA
Authors Brucek Khailany, William J. Dally, Scott Rixner, Ujval J. Kapasi, John D. Owens, Brian Towles
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