Overview
- LineShine, which topped the TOP500 rankings on Tuesday, achieved 2.198 FP64 exaflops on the Linpack benchmark to overtake the U.S. El Capitan as the No. 1 publicly listed supercomputer.
- The system is CPU‑only and uses a domestic stack reportedly built around semi‑custom 304‑core LX2 Armv9 processors, a proprietary LingQi interconnect, about 13.8 million cores in total, and draws roughly 42.2 megawatts of power.
- LineShine is the first Top500 machine to sustain more than 2 exaflops of double‑precision (FP64) performance using only CPUs, but it posts lower mixed‑precision (HPL‑MxP) results that leave it behind many GPU‑accelerated systems on AI‑relevant benchmarks.
- Experts note the TOP500 Linpack metric measures traditional high‑performance computing workloads and does not directly show AI leadership, especially since large GPU‑based hyperscaler clusters often do not enter TOP500.
- The entry underscores strategic effects of U.S. export controls by showing China’s progress on an independent supply chain for processors, interconnects and OS software, and it leaves open near‑term policy and competition questions as the U.S. still holds multiple machines in the top ranks.