this post was submitted on 27 Nov 2023
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What can a cpu core do that a gpu core can't do? (alien.top)
submitted 1 year ago by [email protected] to c/[email protected]
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Afaik, gpu cores a very stripped down cpu cores that do basic math, but what sort of math can cpus do that gpus can't

I'm talking, cpu core vs Tensor/Cuda cores.

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[–] [email protected] 1 points 1 year ago

to echo others, it's not what, but how.

cpus do execution reordering and speculation to run one thread really fast. gpus have mostly avoided that and execute threads in large groups called "warps" (analogous to lanes of a SIMD unit).