Timothée,
Where I work we’ve recently looked/tried to start using TBB with VTK. We did measure performance improvements using it, but recently gave up for a few reasons, which may interest you.
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The newest TBB uses CMake and is thus easier to work with, but…
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VTK doesn’t support the newest TBB https://gitlab.kitware.com/vtk/vtk/-/issues/18107
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TBB doesn’t play nice with Thread Sanitizer (TSan) https://github.com/oneapi-src/oneTBB/issues/358 It’s quite valuable to us that our whole test suite passes with TSan, so introducing something that does not is disagreeable.
Given these issues, I’ve wondered about the feasibility of a GCD (Grand Central Dispatch) backend to vtkSMPTools. See: https://en.wikipedia.org/wiki/Grand_Central_Dispatch
Sean