Pezy Computing's SC4s: A Japanese Math Accelerator Challenging GPU Hegemony

After fifteen years of development, Japan's Pezy Computing has unveiled its latest SC4s math accelerator, challenging Nvidia's GPU dominance in high-performance computing and AI. The SC4s boasts 2048 RISC-V cores, 96GB of HBM3 memory, and a peak power consumption of 600 watts. Its FP64 performance rivals Nvidia's H100, while offering excellent energy efficiency. Unlike the SIMT architecture of GPUs, Pezy uses an SPMD architecture for greater programming flexibility and supports mainstream AI frameworks like PyTorch. While the future FugakuNext supercomputer primarily uses Nvidia GPUs, Pezy's continued R&D ensures Japan's technological independence in high-performance computing and opens possibilities for diverse computing architectures.