2min chapter

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis cover image

E48: Mechanizing Mechanistic Interpretability with Arthur Conmy

"The Cognitive Revolution" | AI Builders, Researchers, and Live Player Analysis

CHAPTER

The Cost of Iterating Over Each Edge in a Network

As you increase like the number of nodes by a factor of two say you're roughly increasing the number of edges in the graph by a Factor of four because these networks are highly connected. Your layer zero heads have an impact on almost all downstream layer heads so that turns out to be the biggest bottleneck. Because this algorithm is iterative over each of the edges this leads to like yeah like the quadratic increase and then like your whole forward pass is now more expensive as well but i don't think would give you any insight into how it works.

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