Remember that in Tallinn’s analysis, post-singularity civilizations run a colossal number of pre-singularity simulations, with the number growing exponentially up to the singularity (basically they want to explore lots of alternate histories, and these grow exponentially).
What substrate are they running these simulations on?
I had another look at Tallinn’s presentation, and it seems he is rather vague on this… rather difficult to know what computing designs super-intelligences would come up with! However, presumably they would use quantum computers to maximize the number of simulations they could create, which is how they could get branch-points every simulated second (or even more rapidly). Bostrom’s original simulation argument provides some lower bounds—and references—on what could be done using just classical computation.
What substrate are they running these simulations on?
I had another look at Tallinn’s presentation, and it seems he is rather vague on this… rather difficult to know what computing designs super-intelligences would come up with! However, presumably they would use quantum computers to maximize the number of simulations they could create, which is how they could get branch-points every simulated second (or even more rapidly). Bostrom’s original simulation argument provides some lower bounds—and references—on what could be done using just classical computation.