JingZhao: A Framework for Rapid NIC Prototyping in the Domain-Specific-Network Era

TL;DR

JingZhao is an open-source framework that enables rapid prototyping and verification of domain-specific NICs, demonstrated by a fully-compatible RDMA NIC design validated through tape-out and high-performance packet processing.

Contribution

This work introduces JingZhao, the first open-source framework for rapid NIC prototyping, including a fully-compatible RDMA NIC with tape-out validation.

Findings

Achieves nearly line-rate packet processing.

First open-source RDMA NIC with standard OFED compatibility.

Supports rapid integration of new network functions.

Abstract

The network is becoming domain-specific, which requires on-demand design of the network protocols, as well as the microarchitecture of the NIC. However, to develop such a NIC is not that easy. Since the scissor gap between network speed and the growth of CPU frequency is expanding, most of the protocols need to be offloaded to hardware. The process of designing, verifying and optimizing a domain-specific NIC usually takes great effort, which hinders the rapid iteration of new protocols and algorithms. In this paper, we propose JingZhao, an open-sourced framework for NIC prototyping, which could be leveraged to rapidly implement and verify a domain-specific NIC. Using this framework, we implement a fully-functional RDMA NIC (RNIC). To the best of our knowledge, this represents the first open-source RDMA NIC solution with complete compatibility to the standard OFED communication library. The RNIC was also taped out using TSMC's 28nm process to validate our design. Our evaluation results show that new network functions can be easily integrated into the framework, and achieve nearly line-rate packet processing.