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Research Article Open Access
Recurrent Neural Networks (RNNs) have the ability to retain memory and learn data sequences. Due to the recurrent nature of RNNs, it is sometimes hard to parallelize all its computations on conventional hardware. CPUs do not currently offer large parallelism, while GPUs offer limited parallelism due to sequential components of RNN models. In this paper we present a hardware implementation of Long-Short Term Memory (LSTM) recurrent network on the programmable logic Zynq 7020 FPGA from Xilinx. We implemented a RNN with 2 layers and 128 hidden units in hardware and it has been tested using a character level language model. The implementation is more than 21 faster than the ARM CPU embedded on the Zynq 7020 FPGA. This work can potentially evolve to a RNN co-processor for future mobile devices.
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Author(s): AC Xian Ming, Berin Martini and Eugenio Culurciello.
Cognitive Radio, Spectrum Sensing, Efficient Communication, System Security., Electronic Materials,Optical Communication,Semiconductor Technology,Electrical Machines,Electromagnetic Transients Programs (EMTP).