Equation 17 · What an AI Accelerator Actually Is: Silicon, Packaging, and the Memory It Can Reach
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the achievable memory bandwidth. Read the equation part by part below; each part has a contextual explanation and a link to its mathematical background.
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Now put the two scaling rates from the opening beside this. If grows at 3.0x per two years and grows at 1.6x, then — the intensity threshold a workload must clear — grows at roughly 1.9x per two years [ 4 ] . Each hardware generation raises the bar for what counts as compute bound. This is why a kernel that was compute bound two generations ago is memory bound today without a line of its source changing, and it is the single most useful thing to know about accelerator roadmaps.
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