[ksec]

Well the link is dead. But I am guessing it is from Fujitsu A64FX, a 512 bit SIMD extension for ARM.

Edit: Turns out I was right. May be this link is better.

https://www.anandtech.com/show/15869/new-1-supercomputer-fuj...

[floatboth]

To be clear, the extension -- Scalable Vector Extensions -- is for any width between 128 bits and 2048 bits. (It's in the name!) The implementation in Fujitsu A64FX seems to be 512 bit specifically.