Re:Cerebras Wafer Scale Engine Gen2 7nm 2.6T Transistors
by 11thEarlOfMar on Tuesday August 18, 2020 @11:20PM
(#24206834)
It must have some redundancy in order to survive process errors. Does it have to be defect-free to yield?
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Re:Cerebras Wafer Scale Engine Gen2 7nm 2.6T Transistors
by segfaultbuserr on Tuesday August 18, 2020 @11:24PM
(#24206850)
Answered in the PDF [0] that HN user "aveni" linked below,
https://www.hotchips.org/hc31/HC31_1.13_Cerebras.SeanLie.v02...
> Redundancy is Your Friend
> Uniform small core architecture enables redundancy to address yield at very low cost
> Design includes redundant cores and redundant fabric links
> Redundant cores replace defective cores
> Extra links reconnect fabric to restore logical 2D mesh