SDAcc: A Stable Diffusion Accelerator on FPGA via Software-Hardware Co-Design

Stable Diffusion has become one of the mainstream image synthesis algorithms. The mainstream computing platform for Stable Diffusion is GPU. However, the deployment of Stable Diffusion on GPU still faces the problems of power consumption. With dedicated hardware design and optimization, FPGA based Stable Diffusion accelerator can achieve better performance of energy efficiency. In this paper, we propose SDAcc for realizing efficient inference of Stable Diffusion on FPGA. SDAcc is 4.40× faster than CPU. Compared to GPU and CPU, SDAcc achieves 1.27× and 19.66× energy efficiency improvement, respectively.