Cerebras has just unveiled the world's largest chip, which packs a mind boggling 2.6 trillion transistors and 850,000 cores.
The new Wafer Scale Engine (WSE) was unveiled at Hot Chips 2020, with Cerebras using TSMC's new 7nm process to cram the 850,000 cores onto the 2.6 trillion transistors. The previous-gen WSE had 1.2 trillion transistors, 400,000 cores, 18GB of on-chip memory, 9PB/sec memory banwidth, and 100Pb/s of total fabric bandwidth that consumed a total of 15kW of power.
How does this work? The Wafer Scale Engine magic is because instead of making the chip into a traditional monolithic processor die, Cerebras instead stitches the processor dies together with a communication fabric -- letting the many, many chips act as one unit.
If you want to compare this against the largest GPU in the world, that would be NVIDIA's new Ampere-based A100 which has 54.2 billion transistors. 54.2 billion transistors versus 2.6 trillion... that's just 0.45 trillion transistors in comparison between Cerebras and NVIDIA.
Cooling something like that isn't easy, so Cerebras used a pretty elaborate power delivery and cooling system to keep the original chips cool. We should expect a huge upgrade in the power delivery and cooling on the next-gen chip, even though there will be some major benefits moving from 16nm to 7nm.
The only question I have is: can it run Crysis?
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