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ARM and Linux take the supercomputer TOP500 crown

Submitted by Rianne Schestowitz on Tuesday 23rd of June 2020 07:08:18 PM Filed under
Linux
Hardware

For years, x86 processors and Linux have ruled supercomputing. Linux still runs 500 out of the TOP500 supercomputers in the world. For just about as long, x86 CPUs have dominated supercomputers -- until now. On June 22, Japan's Fugaku supercomputer, powered by Fujitsu's 48-core A64FX SoC and running Red Hat Enterprise Linux (RHEL), became the first ARM-powered supercomputer to be dubbed the fastest computer in the world.

In winning over the others, it wasn't even close. Fugaku turned in a High-Performance Linpack (HPL) result of 415.5 petaflops, besting the second-place IBM Summit system by a factor of 2.8x.

Fujitsu has been working on creating ultra-high-speed silicon since it turned from the obsolete SPARC architecture to the ARM-based A64FX. This was the first CPU to adopt ARMv8-A's Scalable Vector Extension (SVE). This is an ARM extension to its instruction set specifically for supercomputers. Fujitsu worked with ARM to develop the A64FX.

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