[andrioni]

Do you think you could ask someone and find out the cluster sizes they used for those sorts? They mention "With the largest cluster at Google under our control", but it would be more interesting to have an idea of actual numbers, even if just an order of magnitude.

[fhoffa]

I could ask - but then I wouldn't be able to publish unpublished numbers on my own (if I want to keep my job).

:)