AI 中文总结
本文通过对多款支持RVV 1.0的硬件开展HPC基准测试，将其性能与NVIDIA Grace对比，发现RVV 1.0性能优于标量执行，但仍存在硬件实现挑战，需克服障碍才能成为HPC主流技术。
AI 中文摘要
在RISC-V向量扩展（RVV 1.0）获批后，新商用硅芯片已开始采用该扩展。本文通过对支持RVV 1.0的最新硬件（SiFive X280（Tenstorrent Blackhole）、SpacemiT X60（K1）及X100/A100（K3）、T-Head C920v2（Sophon SG2044））进行基准测试，重新探讨RISC-V在高性能计算（HPC）领域的可行性。我们采用标准HPC基准测试（BLAS、FFTW、HPL、HPCG）及合成工作负载（STREAM、FMA吞吐量）评估这些平台，并将其与最先进的HPC ARM64芯片（NVIDIA Grace）对比。研究发现，RVV 1.0相比标量执行能带来显著性能提升，但仍存在硬件特定实现挑战。我们详细阐述这些性能特征，并探讨RISC-V（包括RVV）成为HPC主流技术需克服的剩余障碍。
英文摘要
Following the ratification of the RISC-V Vector Extension (RVV 1.0), new commercially available silicon has been adopting the extension. This paper revisits the question of RISC-V viability for High-Performance-Computing (HPC) by benchmarking the latest RVV 1.0-capable hardware (SiFive X280 (Tenstorrent Blackhole), SpacemiT X60 (K1) and X100/A100 (K3), and T-Head C920v2 (Sophon SG2044)). We assess these platforms using standard HPC benchmarks (BLAS, FFTW, HPL, HPCG) and synthetic workloads (STREAM, FMA throughput) and compare them to a state-of-the-art HPC ARM64 chip (NVIDIA Grace). Our findings show that while RVV 1.0 delivers significant performance improvements over scalar execution, hardware-specific implementation challenges remain. We detail these performance characteristics and discuss the remaining hurdles for RISC-V, including RVV, to become a mainstay in the HPC landscape.
CommentsAccepted for International workshop on RISC-V for HPC at ISC26
