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Japan's Fugaku supercomputer is tackling some of the world's biggest problems

Jan 08, 2021 (Japan Times) - Japan’s Fugaku supercomputer — which in June ranked first in the global Top500 list of such machines, the first time for a Japanese machine in about nine years — was surprisingly not created with the aim of excelling in numerical benchmarks, unlike some of its rivals.

Instead, it was born with an “application-first philosophy,” meaning that its exclusive purpose is to dedicate its computational excellence to tackling some of the world’s biggest challenges, such as climate change, says Satoshi Matsuoka, 57, the mastermind behind the project.

“Benchmark excellence is not our priority,” he said in an interview conducted in near flawless English. Instead, he said, its success is assessed “based on how much we can accelerate the applications that are important in society.”

As the director of Riken’s Center for Computational Science, Matsuoka and his team have set out nine application areas for Fugaku to work on that are of importance to society, such as medicine, pharmacology, disaster prediction and prevention, environmental sustainability and energy.

Matsuoka began leading the team developing the next-generation supercomputer in around 2010, just before its predecessor K computer became the world’s fastest supercomputer in the Top500 benchmark by conducting more than 10 quadrillion calculations per second.

Fugaku, set to be officially launched in 2021 at Riken’s facility in Kobe, won international acclaim for becoming the world’s first supercomputer to grab the top spot in all four Top500 categories — raw computational speed, big data processing, deep learning with artificial intelligence and practical simulation calculations.

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Japan’s World Cup campaign ended in the cruelest possible fashion on June 29, as Gabriel Martinelli scored in the fifth minute of stoppage time to give Brazil a 2-1 victory over the Samurai Blue in their knockout match in Houston. Japan had led in the first half and were still level at 1-1 in the final moments, but Martinelli’s late strike sent Brazil into the Round of 16 and eliminated Japan from the tournament.

Strong earthquakes have continued to shake parts of Japan in recent weeks, with 11 temblors measuring lower 5 or above on the Japanese seismic intensity scale recorded across the country since April 2026.

A Kintetsu Railway train derailed inside Kyoto Station on the morning of June 29, forcing partial suspensions on the Kintetsu Kyoto Line for the rest of the day and causing long delays that hit commuters, students and tourists.

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Japan advanced to the knockout stage of the World Cup after a 1-1 draw with Sweden on June 25, finishing second in Group F and setting up a Round of 32 clash with Brazil in Houston.

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