[Gmsh] very high memory usage for 3D BoundaryLayer Field construction

[NENNIG Benoit]

Dear gmsh team,

I need to mesh 3D solid with strong  “unstructured” refinement close to the boundary. For this purpose, I try the BoundaryLayer Field. It seems to works for case like in attached file but gmsh need a very large amount of RAM (more than 2Go here !).
Is there something wrong in my approach ?
Is there a memory leak somewhere in the field construction ?

Thanks a lot for your help,

Benoit
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