Scenarios such as HD video, VR / AR, industrial control, and autonomous driving have put forward requirements for the network with ultra-low latency and ultra-high bandwidth. These emerging services show the characteristics of intensive computing, intensive communication, and intensive I/O. The demand for computing power has grown exponentially, which is higher than the CPU performance growth trend defined by Moore's Law. In high-concurrency scenarios such as intensive computing, it is difficult for the CPU to take advantage of its architectural advantages. Therefore, acceleration technology needs to be introduced to bridge the gap between service requirements and system capabilities.