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Equation 7 · Part 6 · The Physical Economics of Inference: Bandwidth, Energy, and the Limits of a Datacenter

Symbol M_kv

B(b,s)≈Np+b Mkv(s),B(b,s) \approx Np + b\,M_{\mathrm{kv}}(s),
MkvM_{\mathrm{kv}}

What this part means

MkM_kv is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

MkM_kv is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

read in full every step for every active request. Total bytes moved per step across a batch of b requests at sequence length s is therefore approximately B(b,s)≈Np+b Mkv(s)B(b,s) \approx Np + b\,M_{\mathrm{kv}}(s). and the achievable step rate is B divided into the device’s usable bandwidth. Two things follow immediately.

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Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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