Where does ext_loader loads functions from?

[Divelix]

Currently, I'm trying to extract PointPillars from mmdetection3d (to deploy on edge device) and stuck on voxelization step. As I understand, this operation should be written in CUDA somewhere, but I see only ext_loader thing that pulls dynamic_voxelize_forward and hard_voxelize_forward functions from somewhere. Can someone clarify, how ext_loader works and where can I find latest implementation of these ops?

[enesozi]

@Divelix You may find the cpu version here. There's also a cuda implementation that you may check out.