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Llama-3.1-405B-Instruct

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@ArthurZ are you going to land this soon?

@ArthurZ I'm waiting on this as well.

Can you explain the precise rationale on why this change was made? The reason this configuration existed is that a 405b model at bf16 isn't loadable on 8 GPUs on any hardware we knew. Is the intended use case one where the weights are loaded and then dynamically quantized and then this configuration leads to faster and more efficient loads since the duplicate heads aren't needed?

@ArthurZ ,

Can you please explain why this change was made? This is causing OOM as 405-instruct is not getting loaded into 8 devices.