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How do I optimize my SIM times when I add custom/ambient velocity into the sim??

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Hi guys, first time asking a question here :).

So i have an object that is travelling a distance - The sim time without any additional user created velocity is about 30 minutes
I am using sparse pyro system for this
And whenever i try to add turbulent wind ( like the ambient wind on a stormy day) , the sim times increases exponentially ( 16+ hours and still going on )
I think that this is because, the velocities are being induced into the entire region rather than just the active region.
Is there a way to fix this?
By fix i mean - reduce the sim times and have the velocity only affect the active region? Please find the attached file for more reference.
Thanks in advance


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I'm just guessing, I haven't used sparse much, but I bet your bottle neck is actually caused by the fact that you are animating the Center of the SmokeObject. With sparse, it will expand as needed. Right-Click Delete Channels. Also, you probably want to merge your source2 wind vel instead of advecting..?


Edited by Atom

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Hi Atom, Thank you for replying. 

The sim time was 30 minutes in my actual file with the expression in the center but the logic makes sense. I should only center it on the first frame. 

I am not sure if this is how we compare performance - I have connected the custom velocity to all 3 inputs and i found different sim times. This is on the 25th frame :). I am sure it might change a lot over time depending on the way it moves.


Edited by n_boga

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