Scaling Up Deep Neural Network Optimization for Edge Inference

09/01/2020 ∙ by Bingqian Lu, et al. ∙ 10

Deep neural networks (DNNs) have been increasingly deployed on and integrated with edge devices, such as mobile phones, drones, robots and wearables. To run DNN inference directly on edge devices (a.k.a. edge inference) with a satisfactory performance, optimizing the DNN design (e.g., network architecture and quantization policy) is crucial. While state-of-the-art DNN designs have leveraged performance predictors to speed up the optimization process, they are device-specific (i.e., each predictor for only one target device) and hence cannot scale well in the presence of extremely diverse edge devices. Moreover, even with performance predictors, the optimizer (e.g., search-based optimization) can still be time-consuming when optimizing DNNs for many different devices. In this work, we propose a new DNN optimization framework which: (1) leverages scalable performance predictors that can estimate the resulting performance (e.g., inference accuracy/latency/energy) given a DNN-device pair; and (2) uses a neural network-based automated optimizer that takes the device features and optimization parameters as input, and then directly outputs the optimal DNN design without going through a lengthy search process for each individual device.

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