Meeting the staggering bandwidth requirements of today's applications challenges the traditional narrow and serialized NoCs, which hit hard bounds on the maximum operating frequency. This paper proposes FlooNoC, an open-source, low-latency, fully AXI4-compatible NoC with wide physical channels for latency-tolerant high-bandwidth non-blocking transactions and decoupled latency-critical short messages. We demonstrate the feasibility of wide channels by integrating a 5x5 router and links within a 9-core compute cluster in 12 nm FinFet technology. Our NoC achieves a bandwidth of 629Gbps per link while running at only 1.23 GHz (at 0.19 pJ/B/hop), with just 10% area overhead post layout.

翻译：为满足当今应用对带宽的极致需求，传统窄通道串行化片上网络（NoC）面临严峻挑战，其工作频率已触及物理极限。本文提出FlooNoC——一款开源、低延迟、完全兼容AXI4协议的片上网络架构，采用宽物理通道技术，既支持延迟容忍型高带宽无阻塞数据事务，又支持延迟关键的短消息解耦传输。通过将5×5路由器和互连链路集成至基于12纳米FinFET工艺的9核计算集群中，我们验证了宽通道技术的可行性。该NoC在仅1.23GHz工作频率下（能效达0.19 pJ/B/hop），单链路带宽可达629Gbps，且布局后的面积开销仅为10%。