48a6626968
By moving checking of Grid outside of loop, we are decrease amount of conditional branches, which allows for better compiler optimizations. Pull Request: https://projects.blender.org/blender/blender/pulls/138410
Mantaflow
Mantaflow is an open-source framework targeted at fluid simulation research in Computer Graphics. Its parallelized C++ solver core, python scene definition interface and plugin system allow for quickly prototyping and testing new algorithms.
In addition, it provides a toolbox of examples for deep learning experiments with fluids. E.g., it contains examples how to build convolutional neural network setups in conjunction with the tensorflow framework.
For more information on how to install, run and code with Mantaflow, please head over to our home page at http://mantaflow.com
Debugging
You could export openVDB volume into mantaflow, by running Blender with:
blender --debug-value 3001
And then select Domain -> Fluid -> Cache - > Advanced -> Export Mantaflow Script.