Just to be clear, SVE is similar to AVX512 but the “Scalable” part is that the length is not hard-coded to any set number of bits or elements. It is more like the vector computers of old, such as the Cray-1.

This means there is no need for continually updating the instruction set with longer and longer versions of the same instructions. Hopefully this leads to a more stable base and wider adoption, we’ll see how that works in practice though!