US loses supercomputer lead as China’s LineShine takes global No. 1 spot

A Chinese-built machine has emerged as the world’s most powerful supercomputer, ending nearly a decade of United States dominance in the global rankings and highlighting Beijing’s push to achieve technological self-reliance in advanced computing. The system, named LineShine, now sits at the top of the latest TOP500 list, which was unveiled on Monday at the International Supercomputing Conference (ISC) in Hamburg, Germany. The ranking is published twice a year and is widely regarded as an informal benchmark of global supercomputing power. The development marks the first time since 2017 that a Chinese supercomputer has led the list, signalling a significant shift in the global high-performance computing landscape. LineShine reportedly achieved a sustained performance of about 2.2 exaflops, a unit that measures how many calculations a system can perform per second. The machine is located in Shenzhen in southern China and was built entirely using Chinese designed processors, rather than relying on US-made chips commonly used in many top-tier systems.

The previous leader, the United States Department of Energy’s El Capitan, has now dropped to second place. The system is housed at the Lawrence Livermore National Laboratory in California. Despite losing the top position, the United States still maintains strong representation in the rankings, holding three of the top four spots. In Europe, Germany’s JUPITER Booster secured fifth place, reflecting continued competition across regions in high-performance computing development. The TOP500 list, which has tracked global supercomputing performance since 1993, is widely used as a measure of national capability in advanced computing, artificial intelligence research, and scientific simulation capacity.

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