Why GPUs beat CPUs
The idea: Each output cell of a layer is its own independent sum, so all of them can be computed at once; a GPU has thousands of slower workers to do exactly that.
What you'll be able to do: You can explain why AI runs on GPUs: the matmul is parallel, so wide hardware wins.
The problem it solves: A giant matrix multiply on a few fast CPU cores takes forever.
Builds on: Matrix × vector as a neural layer
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