In RDMA mode, the data of the application program communicates directly with the network card without passing through the CPU and complex operating system. This means that the DPU can undertake storage-related high-speed interface standard protocol processing, further sharing the pressure on the CPU.
Finally, look at safety.
In the current increasingly severe security situation, in order to ensure the safety and reliability of the network and system, a large number of encryption algorithms have been introduced. In the past, these algorithms were performed by the CPU for encryption and decryption.