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- W770950841 abstract "FPGA-based systems consisting external memory have been extensively employed in data intensive applications such as signal, image, and network processing. Memory energy is a dominating factor in the overall system energy dissipation. In particular, when performing non-sequential memory access patterns, significant amount of energy is dissipated due to frequent memory row activations. In this paper, we consider the classic stride memory access pattern and evaluate the energy consumption in DRAM. Lower bounds on DRAM energy consumption are derived for this widely used memory access pattern which introduces row-wise writing and column-wise reading memory operations. To achieve the lower bounds of the DRAM energy consumption, we remap data onto DRAM for both row-wise and column-wise memory operations. This significantly reduces the latency brought by frequent DRAM row activations due to column-wise memory operations. We validate experimentally our analysis using 2-D FFT as a benchmark application on FPGA-based system. The experimental results demonstrate that our proposed optimizations result in 74.8 %(sim )77.7 % reduction in energy consumption of the overall system compared with the baseline for 1024(times ) 1024, 4096(times ) 4096, and 8192(times ) 8192 points 2-D FFTs, respectively." @default.
- W770950841 created "2016-06-24" @default.
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- W770950841 date "2015-01-01" @default.
- W770950841 modified "2023-09-27" @default.
- W770950841 title "DRAM Row Activation Energy Optimization for Stride Memory Access on FPGA-Based Systems" @default.
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- W770950841 doi "https://doi.org/10.1007/978-3-319-16214-0_30" @default.
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