Furthermore, biological evolution experiments with immense population sizes in parallel. At the low extreme, there are about 10 to the 10th humans in the curre

Furthermore, biological evolution experiments with immense population sizes in parallel. At the low extreme, there are about 10 to the 10th humans in the current generation. At the high extreme, there are (very approximately) 10 to the 20th algae in the current generation. So you'll need somewhere north of 10 to the 10th of those soccer field sized mainframes.