December 8, 2015

Improving Neural Network Performance on SIMD Architectures

Proc. SPIE 9875, Eighth International Conference on Machine Vision (ICMV 2015), 98750L (8 December 2015); doi: 10.1117/12.2228594

Neural network calculations for the image recognition problems can be very time consuming. In this paper we propose three methods of increasing neural network performance on SIMD architectures. The usage of SIMD extensions is a way to speed up neural network processing available for a number of modern CPUs. In our experiments, we use ARM NEON as SIMD architecture example. The first method deals with half float data type for matrix computations. The second method describes fixed-point data type for the same purpose. The third method considers vectorized activation functions implementation. For each method we set up a series of experiments for convolutional and fully connected networks designed for image recognition task.

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