A question regarding the caching of VDB's from a smoke simulation.
Currently see well over 160 million vel voxels when I load some cached vdbs from a sim.
That combined with 5 substeps necessary in my simulation is choking my Threadripper, simulation times are simply too long.
Since all I really need are density voxels (and optionally temperature or heat) for rendering, does it make sense to delete these vel voxels just before caching?
Caching VDBs, reducing size450 3 1
The resolution definitely doesn't have to be as high as the density though. You can reduce the velocity VDB with the VDB Resample node, set it to “Using Voxel Scale Only” and increase the voxel scale to a multitude (Voxel Scale>1).
Edited by shadesoforange - Nov. 11, 2019 18:47:11
Manuel Köster - Technical Procedural Artist @Crytek
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