A 1.4 GHz 695 Giga Risc-V Inst/s 496-Core Manycore Processor With Mesh On-Chip Network and an All-Digital Synthesized PLL in 16nm CMOS

Austin Rovinski, Chun Zhao, Khalid Al-Hawaj, Paul Gao, Shaolin Xie, Christopher Torng, Scott Davidson, Aporva Amarnath, Luis Vega, Bandhav Veluri, Anuj Rao, Tutu Ajayi, Julian Puscar, Steve Dai, Ritchie Zhao, Dustin Richmond, Zhiru Zhang, Ian Galton, Christopher Batten, Michael B. Taylor et al. (1 additional authors not shown)

Abstract: This paper presents a 16 nm 496-core RISC-V network-on-chip (NoC). The mesh achieves 1.4 GHz at 0.98 V, yielding a peak of 695 Giga RISC-V instructions/s (GRVIS) and a record 812,350 CoreMark benchmark score. The main feature is the NoC architecture, which uses only 1881 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> per router node, enables highly scalable and dense compute, and provides up to 361 Tb/s of aggregate bandwidth.