Simulation threads, substeps, frame rate, CPU load, and simulation speed are important variables in conjunction with RealFlow. First, letLet's clear up the relations between all these terms.
...
- If your computer supports hyper-threading you will see a higher value.
- Threads can be adjusted for each scene individually under → Simulation Options > General.
Under some circumstances you will notice that RealFlow uses only a fraction of the available cores and CPU load is just around 10%. This is typically the case with low-resolution fluid simulations:
...
lengthsubstep = 1 / ( 400 * 300 )lengthsubstep = 0.0000083 s.- So we have a much higher precision:
0.0000083 s vs. 0.0001333 s
In order to get the same precision as before, substeps can be decreased:
- In this example, the FPS rate has been increased by a factor of 16.
- Therefore, the number of substeps can be calculated as
300 / 16 = 19 - So with 19 substeps and 400 frames per second fps we get the same level of precision as beforewith 300 substeps and 24 fps.