> SIMD vector instructions Err... That term is used to describe modern vector instructions that are NOT vector instructions in the classical Cray-sense. Mode

> SIMD vector instructions Err... That term is used to describe modern vector instructions that are NOT vector instructions in the classical Cray-sense. Modern CPUs use wide registers that can be regarded as vectors of 2/4/8/... values. Cray used memory-to-memory variable-length vectors. I'm not saying that "SIMD vector instructions" is an incorrect description of what the Cray machines did, I'm saying that the term usually means something else today.