Fujitsu A64FX: ARM‑Based SoC Powering Japan’s Fugaku Supercomputer and Its Architectural Heritage from BlueGene/L

The article provides a detailed technical overview of Fujitsu's ARM‑based A64FX processor, its design origins, specifications, network architecture, and how it enables the Fugaku supercomputer to achieve world‑leading performance while illustrating broader trends in high‑performance computing hardware.

ARM architectureBlueGene/LFujitsu A64FX

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Fujitsu A64FX: ARM‑Based SoC Powering Japan’s Fugaku Supercomputer and Its Architectural Heritage from BlueGene/L

Architects' Tech Alliance

Dec 8, 2021 · Industry Insights

Inside Fujitsu A64FX: Architecture that Drives Japan’s Fugaku Supercomputer

The article examines Fujitsu’s A64FX ARM‑compatible processor, detailing its 7 nm FinFET design, HBM2 memory, SVE vector extensions, and system‑on‑chip integration, while comparing its engineering philosophy and performance to IBM’s BlueGene/L and explaining how these choices enabled the Fugaku supercomputer to top the Top500 list.

ARM architectureBlueGene/LFugaku

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Inside Fujitsu A64FX: Architecture that Drives Japan’s Fugaku Supercomputer