arXiv (Cornell University)
BPLight-CNN: A Photonics-based Backpropagation Accelerator for Deep Learning
February 2021 • Dharanidhar Dang, Sai Vineel Reddy Chittamuru, Sudeep Pasricha, Rajarshi Mahapatra, Debashis Sahoo
Training deep learning networks involves continuous weight updates across the various layers of the deep network while using a backpropagation algorithm (BP). This results in expensive computation overheads during training. Consequently, most deep learning accelerators today employ pre-trained weights and focus only on improving the design of the inference phase. The recent trend is to build a complete deep learning accelerator by incorporating the training module. Such efforts require an ultra-fast chip architect…