If C ~ D^2, then D ~ sqrt(C). In other words, the required amount of data scales with the square root of the compute. The square root of 2 ~= 1.414. If you dou

If C ~ D^2, then D ~ sqrt(C). In other words, the required amount of data scales with the square root of the compute. The square root of 2 ~= 1.414. If you double the compute, you need roughly 1.414 times more data.