Qualla: K computer https://qualla.com/k-computer en-us © 2026 Bendyline Mon, 20 Jul 2026 10:21:39 GMT Qualla serial false Qualla support@bendyline.com yes https://qualla.com/_m/x/n/0/j/k-computer-wp/hero-small.webp Qualla: K computer https://qualla.com/k-computer K computer: Introduction https://qualla.com/k-computer/ Photo credit Калан-Два, CC BY-SA 3.0. The Japanese word "kei" means ten quadrillion -- ten followed by sixteen zeros, a quantity so vast it strains comprehension. Fujitsu and RIKEN chose it as the name for their supercomputer because the machine was built to reach ten petaflops: ten quadrillion floating-point calculations per second. When the K computer achieved that target in November 2011, becoming the first machine in history to break the ten-petaflop barrier, the name stopped being an aspiration and became a fact. Housed in 864 refrigerator-sized cabinets at the RIKEN Advanced Institute for Computational Science in Kobe, the K computer drew 9.89 megawatts of power -- equivalent to nearly 10,000 suburban homes running simultaneously -- to model climate systems, simulate earthquake damage, and advance medical research. It was decommissioned in 2019, replaced by an even more powerful successor. But for the years it ran, K was the machine that proved Japan could build the fastest brain on the planet.

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Image: Калан-Два | CC BY-SA 3.0

]]> Thu, 12 Feb 2026 00:00:00 GMT https://qualla.com/_m/x/n/0/j/k-computer-wp/xn0j-k-computer-intro.mp3 0:06 1 full K computer: The Race to Ten Petaflops https://qualla.com/k-computer/ Photo credit Kakidai, CC BY-SA 3.0. Development began in 2006 as a Japanese government initiative, with 111 billion yen invested in co-development between RIKEN and Fujitsu. On June 20, 2011, the TOP500 Project Committee announced that K had set a LINPACK benchmark record at 8.162 petaflops, making it the fastest s...

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Image: Kakidai | CC BY-SA 3.0

]]> Thu, 12 Feb 2026 00:00:00 GMT https://qualla.com/_m/x/n/0/j/k-computer-wp/xn0j-k-computer-the-race-to-ten-petaflops.mp3 0:06 2 full K computer: Inside the Machine https://qualla.com/k-computer/ Photo credit Tonusamuel, CC BY-SA 3.0. The K computer comprised 88,128 SPARC64 VIIIfx processors running at 2.0 GHz, manufactured by Fujitsu using 45-nanometer CMOS technology. Each of the eight-core processors sat inside a computing node with 16 gigabytes of memory, and 96 nodes filled each of the 864 cabinets -- for...

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Image: Tonusamuel | CC BY-SA 3.0

]]> Thu, 12 Feb 2026 00:00:00 GMT https://qualla.com/_m/x/n/0/j/k-computer-wp/xn0j-k-computer-inside-the-machine.mp3 0:06 3 full K computer: The Power Problem https://qualla.com/k-computer/ Photo credit Toshihiro Matsui from Tsukuba and Yokohama, Japan, CC BY 2.0. At 9.89 megawatts, the K computer reported the highest total power consumption on the June 2011 TOP500 list. That figure invites easy criticism, but context matters. K achieved 824.6 gigaflops per kilowatt -- nearly 30 percent more efficient than China's NUDT TH MPP, ranked secon...

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Image: Toshihiro Matsui from Tsukuba and Yokohama, Japan | CC BY 2.0

]]> Thu, 12 Feb 2026 00:00:00 GMT https://qualla.com/_m/x/n/0/j/k-computer-wp/xn0j-k-computer-the-power-problem.mp3 0:06 4 full K computer: Legacy in Silicon https://qualla.com/k-computer/ Photo credit 百楽兎, CC BY-SA 3.0. The K computer was formally decommissioned on August 30, 2019, after seven years of operational service. Its applications ranged from simulating tsunami propagation to modeling protein folding for drug discovery -- the kind of work that requires solving millions of equations simu...

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Image: 百楽兎 | CC BY-SA 3.0

]]> Thu, 12 Feb 2026 00:00:00 GMT https://qualla.com/_m/x/n/0/j/k-computer-wp/xn0j-k-computer-legacy-in-silicon.mp3 0:06 5 full