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KV Cache Size in Grouped-Query Attention (GQA)
The memory size required for the Key-Value (KV) cache in a Grouped-Query Attention (GQA) model is determined by the complexity formula . Because the size depends directly on the number of shared key-value groups, denoted as , adjusting this parameter allows for a trade-off between computational efficiency and model expressiveness. Specifically, when , the architecture operates as a standard multi-head attention model, whereas setting configures it as the GQA model.
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Foundations of Large Language Models
Ch.2 Generative Models - Foundations of Large Language Models
Foundations of Large Language Models Course
Computing Sciences
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