The practical story is done — the vmap fix works, and in this benchmark it beats fused standard attention once the score matrix outgrows VMEM. But I was left with the nagging question: why did the original fail so badly? What is the hardware actually doing with those tiles? The rest of this post is the rabbit hole I fell into trying to answer that. It shifts from experiment log to architecture explainer — feel free to stop here if the benchmark results are all that matters.
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Цены на нефть взлетели до максимума за полгода17:55。谷歌对此有专业解读
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