Liquid Resimulation Speed

[Jassir]

Hello,

I am testing Phoenix in version 3 at the moment. Specifically the particle resimulation for liquid simulations. Here is what I did.

I simulated 11 frames without splashes but with activated velocity channel. After that I simulated the splashes using the resimulation feature. In order to do that I enabled "splash/mist" and the option "Enable Particle Resimulation" with the suboption "Splash and mist" and hit "Start" in the normal "Simulation" panel. I hope that was the right procedure.
The first simulation (no splashes) took 2m 31s
The resimulation for the splashes took 2m 42s

Then I disabled the resimulation option. I think that way the whole simulation, liquid and splashes, is done in one go, isen`t it?
This simulation (liquid and splashes) took 2m 56s

Are these times to be expected?
I kind of thought the one where I did both in one go would take significantly longer, or the resimulation where only the splashes are done and the liquid is already there would be faster.

Maybe helpfull, in the 11th frame I had
Liquid: 125 878
Foam: 0
Splashes: 364 642
Mist: 212 877

"Affect Liquid" was always deaktivated

[Svetlin.Nikolov]

Hey,

The difference in time would be more noticeable in bigges scenes that have quite a lot liquid particles - the resimulation would basically strip away the time needed to simulate the actual liquid mass, but in simulations where the foam and splash significantly outnumber the liquid particles, there would not be much benefit from it. Also, with low resolution, the time to read the base caches and extract the liquid and velocities could compensate for the speedup of skipping the liquid simulation as well.

Cheers!

[Jassir]

Thanks for the reply. Now I know that my workflow was correct and it was just this specific scene that produced these values.