Spotlight architecture scrutiny: attention-style memory may carry a large constant factor
teortaxesTex · x · 2026-10-03
Citing Spotlight's pitch of combining attention's growing memory and capacity with the linear compute cost of fixed-state recurrent models, teortaxesTex questions the constant factor: a single memory access touches 9 cells, each cell a full dk×dv matrix per head. He suspects the overhead stems from continual learning design choices, offering a back-of-envelope challenge to the architecture's efficiency claims.
Related event: Percepta Unveils Spotlight: Decoupling Intelligence from Unbounded Memory(5 posts)→
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