[vtkusers] Python and VTK with multiprocessing or joblib libraries

[Martin Reed]

Hi All,

I am trying to parallelize a ray tracing algorithm in VTK with the python wrapper.
I have the core algo working but now need to port it onto a multicore machine.
*) 2 vtkPoints objects that represent the points on a building and the points on a skydome.
*) vtkOBBTree object that represents the surrounding objects that potentially block the rays
*) evaluate <psource, pTarget, obbTree> so get a true/false value for whether the ray intersects with anything in between (IntersectWithLine method of obbTree)

What is the best way to parallelize this? I have tried joblib and multiprocessing but have an issue with 'pickling', seems vtk objects cannot be pickled for use with these libraries(?)
Any recommendations/examples on how best to do this?

Thanks,
martin


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