[rongopo]

If the margins are so tight that 1 day can only produce 2.5 days of simulation, why to lose even a small margin with Julia?

[dunefox]

How do you know they would lose a significant margin with Julia?

[rongopo]

There were talks about it in the Climate modelling arena, and around a 10% slower was mentioned in some discussions.

[dunefox]

Well, if that's not hard data!

[rongopo]

Please can you specify what do you mean?

[elmomle]

I believe the parent was trying to say that the information provided is anecdotal, and that they would prefer hard data. They were doing this in an exasperated tone--the full version of their expression would be some version of "If that isn't hard data, I don't know what is!", and is meant ironically in this context.

[rongopo]

Got it, thanks for the input! To the best of my knowledge there are no published results showing this comparison in quantitative terms