There's some information on this towards the end of the slides at https://www.anandtech.com/show/14758/hot-chips-31-live-blogs-cerebras-wafer-scale-deep-learnin

There's some information on this towards the end of the slides at https://www.anandtech.com/show/14758/hot-chips-31-live-blogs-cerebras-wafer-scale-deep-learning https://www.anandtech.com/show/14758/hot-chips-31-live-blogs.... Sadly there's very little concrete info on the packaging methodology (hardly a surprise) which to me is the only truely novel thing about this chip. But it must cost an absolute fortune.