Question Tesla's wafer-sized Dojo processor is in production — 25 chips combined into one

[IGBT]

Tesla's Dojo system-on-wafer processor (or, as Tesla calls it, the Dojo Training Tile) relies on a 5-by-5 array of known good processor chips (which are reticle size, or close to that) that are placed on a carrier wafer and interconnected using TSMC's integrated fan-out (InFO) technology for wafer-scale interconnections (InFO_SoW). The InFO_SoW technology is designed to enable such high-performance connectivity that 25 dies of Tesla's Dojo would act like a single processor, reports IEEE Spectrum. Meanwhile, to make the wafer-scale processor uniform, TSMC fills in blank spots between dies with dummies. https://www.tomshardware.com/tech-i...-4CD7-9379-2DFD7F0691B7&utm_source=SmartBrief

 

[IEC]

18000 amps power delivery with 15000W heat production?

Wowza.

 

[Mopetar]

It's not that outrageous once you do the math. That's 25 dies at the reticle limit, so about 600W per die if we pretend the interconnect is free. 600W isn't out of line for what a huge, top-end GPU can pull when it's running full bore, which is basically what these are going to do.

It's still pretty impressive though and the engineering for the cooling is probably just as interesting, but this seems like the sort of thing you'd probably just submerge in oil or some other kinds of non-conducive solution and circulate it through cooling stacks.

Someone should try to find a solution that would be non-conductive, but has a low enough evaporation point that you could build a closed-loop steam turbine with your cooling solution and recover some of the power costs of running it.

 

[Harry_Wild]

Tesla has the power too! Would not surprise me that they end up sell A.I. accelerator chip outside Tesla in the future too!