China's LineShine Dethrones El Capitan as World's Fastest Supercomputer

A fully domestically-made Chinese supercomputer tops the TOP500 for the first time in nearly a decade, running at 2.19 exaflops with zero US-made GPUs — export controls forced an architecture that may point to the future of scientific computing.

The crown has moved. On June 24, China's LineShine supercomputer claimed the number one spot on the TOP500 list of the world's fastest computers, dethroning the US-based El Capitan at Lawrence Livermore National Laboratory. It's the first time a China-based machine has led the ranking since 2017.

LineShine, housed at the National Supercomputing Center in Shenzhen, delivers 2.19 exaflops — more than two quintillion calculations per second — making it 22% faster than El Capitan on the industry-standard Linpack benchmark.

What makes the machine remarkable isn't just its speed. LineShine was built entirely from Chinese components, including nearly 14 million processing cores, and uses no GPUs at all. US export controls, which restrict the sale of advanced graphics chips to China, inadvertently forced an architecture that may point to the future of scientific computing: a hybrid that fuses traditional high-performance computing with AI workloads on a single machine.

"The win demonstrates China's very substantial capabilities in computer-processor design," said Jack Dongarra, a computer scientist at the University of Tennessee and co-creator of the TOP500 list, speaking to Nature. "That may be particularly valuable as scientific computing and AI become increasingly intertwined."

Researchers are already putting LineShine to work. Haohuan Fu's team at Tsinghua Shenzhen International Graduate School used it to combine physics-based weather models with AI, improving rainfall predictions over East Asia. The machine crunched through a decade of weather data — from 2016 to 2025 — in just 14.6 hours. A typical computing cluster, Fu noted, "would not be able to support this combination of scale, speed, and complexity."

The last Chinese supercomputer to hold the top spot was Sunway TaihuLight in 2017. LineShine's return to the summit, achieved without access to cutting-edge US silicon, reframes the chip export debate: restriction may slow adoption, but it can also accelerate indigenous design.

Sources: Nature, The Guardian, Al Jazeera