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On the Correlation of CNN Performance and Hardware Metrics for Visual Inference on a Low-Cost CPU-based Platform

AuthorsVelasco-Montero, Delia; Fernández-Berni, J. CSIC ORCID CVN; Carmona-Galán, R. CSIC ORCID ; Rodríguez-Vázquez, Ángel CSIC ORCID
Issue Date2019
PublisherInstitute of Electrical and Electronics Engineers
Citation26th IEEE International Conference on Systems, Signals and Image Processing (IWSSIP),2019
AbstractWhile providing the same functionality, the various Deep Learning software frameworks available these days do not provide similar performance when running the same network model on a particular hardware platform. On the contrary, we show that the different coding techniques and underlying acceleration libraries have a great impact on the instantaneous throughput and CPU utilization when carrying out the same inference with Caffe, OpenCV, TensorFlow and Caffe2 on an ARM Cortex-A53 multi-core processor. Direct modelling of this dissimilar performance is not practical, mainly because of the complexity and rapid evolution of the toolchains. Alternatively, we examine how the hardware resources are distinctly exploited by the frameworks. We demonstrate that there is a strong correlation between inference performance – including power consumption – and critical parameters associated with memory usage and instruction flow control. This identified correlation is a preliminary step for the development of a simple empirical model. The objective is to facilitate selection and further performance tuning among the ever-growing zoo of deep neural networks and frameworks, as well as the exploration of new network architectures.
Description26th IEEE International Conference on Systems, Signals and Image Processing (IWSSIP), Osijek, Croatia, June 2019.
Publisher version (URL)http://dx.doi.org/ 10.1109/IWSSIP.2019.8787329
Appears in Collections:(IMSE-CNM) Comunicaciones congresos
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