iWarp is just one of the more recent systolic arrays. But they go back to atleast 1943 with the https://en.wikipedia.org/wiki/Colossus_computer https://en.wiki

iWarp is just one of the more recent systolic arrays. But they go back to atleast 1943 with the https://en.wikipedia.org/wiki/Colossus_computer https://en.wikipedia.org/wiki/Colossus_computer, and there is a lot of variety and topologies...but they all work by piping data around between modules.