Comment by Tuna-Fish
1 day ago
Taalas only uses SRAM for the KV cache and the activations, the weights are in mask rom in the metal layers.
If they designed this right, it means that once they have a model, so long as they keep the hyperparameters fixed they can change the weights much faster than it takes to spin up a completely new chip, essentially at a cost of doing a minor revision.
Is the mask ROM really going to be worth it over Carmack's high-bandwidth-flash concept? I mean, sure, I could be convinced I guess, but it's not obvious.
Yes.
Not because rom is better than flash, but because the critical part is distributing the memory with the compute. Mask ROM is just the densest way of embedding memory with logic. Instead of having a large pool of memory connected to the separate execution units with a bus, each execution unit locally has the rom that it uses. Data movement is >90% of energy use in modern ai accelerators, removing it as far as practical is how they get performance and silicon and energy efficiency.