Supercomputing crown amid adversity: China Daily editorial

For much of the past decade, Washington has operated on the assumption: restrict China's access to advanced technology and its climb up the value chain will slow down. Few sectors better illustrate this strategy than supercomputing, where export controls, entity lists and semiconductor restrictions have become standard instruments of US policy.

Yet the unveiling of China's LineShine supercomputer at the International Supercomputing Conference High Performance 2026 in Hamburg this week suggests the outcome is not unfolding as intended.

Reclaiming a technological crown that China last held nearly a decade ago, LineShine has become the world's fastest supercomputer, surpassing systems from the United States and Germany.

What makes this moment noteworthy is that it arrives after years of increasingly stringent Western attempts to deny China access to the technologies needed to build such a machine.

In 2015, Washington imposed restrictions linked to China's Tianhe-2 supercomputer project. In 2019, it placed two Chinese supercomputing giants — Sugon and Sunway TaihuLight — on its blacklist. Two years later, in 2021, it expanded the restrictions to include seven additional Chinese supercomputing entities with controls extending to advanced semiconductors, high-end GPUs and chipmaking equipment.

China, however, did not cave in.

LineShine reportedly became the first exascale-class supercomputer to achieve its performance using only CPUs rather than relying on the GPUs that power most leading systems today. Reports suggest it is roughly 20 percent faster than El Capitan, the US machine that previously occupied the top position.

More important than LineShine's speed is what it represents. Supercomputers are not standalone products; they are ecosystems. Their success depends on advances across semiconductors, memory architecture, interconnect technologies, software optimization, cooling systems and large-scale integration.

LineShine demonstrates that China has developed an increasingly complete domestic technology stack. It is reportedly the first supercomputer to reach the pinnacle of global supercomputing without relying on products from Nvidia, Intel or AMD. In that sense, it represents not merely a computing breakthrough but a broader technological and industrial achievement.

This is where the story becomes less about high technology and more about geopolitics.

The US has resorted to blacklisting Chinese entities it perceives as "strategic competitors", restricting their access to advanced technologies, equipment and components and pressuring its allies to adopt similar measures. Yet these restrictions have failed to negate the inherent advantages of China's sizable research ecosystem, superlarge domestic market, comprehensive manufacturing base, deep pool of engineering talent, strong policy coordination and extensive integration into global supply chains and innovation networks.

Rather than slowing China's innovation drive, external pressure has strengthened the incentive for indigenous research and technological self-reliance. The behavior of multinational corporations reinforces this reality. Many global companies continue to deepen their engagement with China's innovation and industrial ecosystem. The country has attracted more than $100 billion in actual foreign investment annually for 16 consecutive years, while multinational corporations are steadily expanding their research activities in the country.

The implications extend well beyond China. For decades, advanced computing capabilities were concentrated in a small group of developed economies. Many developing countries have depended on technologies controlled elsewhere and subject to political restrictions. China's experience suggests a different possibility: technological advancement should not be the exclusive preserve of any single country, alliance or geopolitical bloc.

China's rise from 34th place in the Global Innovation Index in 2012 to 10th last year reflects sustained investment in education, research and industrial capacity and the hard work of the Chinese people. These gains were not condescending gifts from the West. Nor were they outcomes of "subsidies".

The broader takeaway from Hamburg, a storied cradle of Western European innovation, is that technological preeminence is not something that can be ring-fenced through restrictions or sanctions alone.

Innovation is not a fortress to be defended. Like capital, talent and knowledge, it tends to find alternative routes when existing ones are blocked, so long as the pro-innovation environment is favorable.