I don’t think that’s an accident. Tesla undoubtedly took inspiration from Cerebras. Also, I think some TSMC processes enable this kind of wafer-scale chip, and both companies use this.
I may be mistaken, but Teslas Dojo chip still seems to be relatively small. They can connect many of them into a 2D fabric, though.
Cerebras still seems to have an advantage here, because they can use on-chip interconnects, which potentially allows higher bandwidth between the tiles.
From what I understand, both Tesla and Cerebras use TSMC’s on-wafer fan out technology.
I think the Tesla "Tiles" of 25 D1 chips are on a single wafer with integrated interconnects. But there is certainly a huge difference in the memory bandwidth claims. Cerebras claims 20PB/s, and Tesla claims 10Tbps.