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Equation 9 · Part 1 · How AI Inference Serving Actually Works

Symbol h_kv

hkvh_{kv}
hkvh_{kv}

What this part means

the number of key-value attention heads.

Its job in the formula

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

Where the article explains it

For a model with L layers, hkvh_{kv} key-value attention heads, head dimension dhd_h , holding a sequence of length s across b concurrently served sequences, stored at p bytes per element, the total resident size is

The passage around this formula

Its footprint follows directly from the shape of the cache. For a model with L layers, hkvh_{kv} key-value attention heads, head dimension dhd_h , holding a sequence of length s across b concurrently served sequences, stored at p bytes per element, the total resident size is

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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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Sources cited in the article section

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