Deep Neural Network Architecture implementation on FPGAs using a Layer Multiplexing Scheme

In recent years predictive models based on Deep Learning strategies have achieved enormous success in several domains including pattern recognition tasks, language translation, software design, etc. Deep learning uses a combination of techniques to achieve its prediction accuracy, but essentially all existing approaches are based on multi-layer neural networks with deep architectures, i.e., several layers of processing units containing a large number of neurons. As the simulation of large networks requires heavy computational power, GPUs and cluster based computation strategies have been successfully used. In this work, a layer multiplexing scheme is presented in order to permit the simulation of deep neural networks in FPGA boards. As a demonstration of the usefulness of the scheme deep architectures trained by the classical Back-Propagation algorithm are simulated on FPGA boards and compared to standard implementations, showing the advantages in computation speed of the proposed scheme.