alt Hacker NewsOne thing I don't get about Cerebras, they say it's wafer scale, but the chips they show are square, I thought wafers were circular?
Replies
wmf • today at 1:27 AM
They cut off the sides. It's the largest square you can make from a wafer.
cyanydeez • today at 1:03 AM
I believe the discs are a product of the manufacturing, having to spin them. The entire disc is not useable, so not really would you call it a wafer. If the entire cjip comes from the wafer, its wafer scale.
Their chips aren't actually square, they get an extra 2.9mm in both dimensions by having slightly rounded corners. They are wasting the rest of the circle though yes.