----- Original Message ----- > From: "Shaul Kedem" <shaul.ke...@gmail.com> > No, I mean is it deterministic?
>From one run to the next, yes, you should get the same result. In terms of being predictable, I did some tests with the TwoPipe demo, in which water drains through a hole (you may need to increase the fluid interaction radius to see this effect). With zero subframes, it takes a long time to drain; with more subframes, it tends to take less time (time in frames, not computation time). However, it starts to converge for subframes > 3 or a Courant target < 0.2, and barely changes beyond subframes = 8 or Courant target = 0.1. So it seems to become more accurate with smaller time steps, but you should rarely need to go beyond those values. The adaptive subframe code gives a stronger guarantee that your simulation will be stable, but it's not predictive, so for some simulations a constant time step is still more appropriate. Cheers, Alex -- Alex Fraser Software Engineer The Victorian Partnership for Advanced Computing _______________________________________________ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers