Why do we even need SIMD instructions ?
Last week, I was chatting with a student and I was explaining what SIMD instructions were. I was making the point that, in practice, all modern processors have SIMD instructions or the equivalent. Admittedly, some small embedded processors do not, but they lack many other standard features as well. SIMD stands for Single Instruction, Multiple Data, a type of parallel computing architecture that allows a single instruction to process multiple data elements simultaneously. For example, you can ...| Daniel Lemire's blog
