This is an interesting topic and I'd really like to know the answer. But many SIMD and vector machines had have gather scatter, or even general instruction sets which include indirection. The article kind of says this, but tries to distinguish between some kind of limited table lookups vs general indirection. Maybe this is really only relevant to SSE/AVX models?<p>I guess it kind of useless to try to backwards-engineer from marketing derived terms. But if anyone sees a bright line between a GPU and a bunch of intel hardware threads with vector units, please share.