Fujitsu A64FX

The A64FX is an ARM architecture microprocessor designed by Fujitsu.[1][2] The processor is replacing the SPARC64 V as Fujitsu's processor for supercomputer applications.[3] It is powering the Fugaku supercomputer.[2][3][4]

A64FX
General Info
Launched2019
Marketed byFujitsu
Designed byFujitsu
Common manufacturer(s)
Architecture and classification
Min. feature size7 nm
MicroarchitectureIn-house
Instruction setARMv8.2-A with SVE and SBBA level 3
Physical specifications
Cores
For the AMD microprocessor, see Athlon 64.

Fujitsu collaborated with ARM to develop the processor; it will be the first processor to use the ARMv8.2-A Scalable Vector Extension (SVE) SIMD instruction set with 512-bit vector implementation.[2] A prototype computer using the processors was ranked as the 159th fastest computer in the world on the Top 500 list in November 2019.[5]

The processor uses 32 gigabytes of HBM2 memory with a bandwidth of 1 TB per second.[2] The processor contains 16 PCI Express generation 3 lanes to connect to accelerators, e.g. GPGPUs and FPGAs.[1] The reported transistor count is about 8.7 billion.[2]

The current fastest supercomputer on the Top 500 list FUGAKU uses A64FX 48C 2.2GHZ CPUs, with a total of 7,299,072 cores and 4,866,048 GB of memory. [6]

Implementations

Cray is developing supercomputers using the A64FX.[7] The Isambard 2 supercomputer is being built for a consortium in the United Kingdom, led by the University of Bristol and also including the Met Office, using the Fujitsu processors.[8][9] It is the successor to the Isambard supercomputer which was built with the Cavium ThunderX2, another ARM architecture microprocessor.[9]

See also

References
  1. "Hot Chips 30 conference; Fujitsu briefing" (PDF). Toshio Yoshida.
  2. "Fujitsu Successfully Triples the Power Output of Gallium-Nitride Transistors - Fujitsu Global". www.fujitsu.com. Fujitsu. Retrieved 8 March 2020.
  3. Morgan, Timothy Prickett (24 August 2018). "Fujitsu's A64FX Arm Chip Waves The HPC Banner High". The Next Platform. Retrieved 8 March 2020.>
  4. https://www.r-ccs.riken.jp/en/postk/project/outline
  5. "A64FX prototype - Fujitsu A64FX, Fujitsu A64FX 48C 2GHz, Tofu interconnect D | TOP500 Supercomputer Sites". www.top500.org. Retrieved 8 March 2020.
  6. https://www.top500.org/system/179807/ SUPERCOMPUTER FUGAKU - SUPERCOMPUTER FUGAKU, A64FX 48C 2.2GHZ, TOFU INTERCONNECT D
  7. "Cray, Fujitsu Both Bringing Fujitsu A64FX-based Supercomputers to Market in 2020". HPCwire. 13 November 2019. Retrieved 8 March 2020.
  8. Bristol, University of. "February: GW4 Isambard - News and features - University of Bristol". www.bristol.ac.uk. Retrieved 8 March 2020.
  9. Burt, Jeffrey (9 March 2020). "Isambard 2 Is About Driving Technology Diversity". The Next Platform. Retrieved 9 March 2020.
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