[Gmsh] Interactive use, bad performance

Christophe Geuzaine cgeuzaine at ulg.ac.be
Thu Apr 28 21:56:34 CEST 2016

> On 19 Apr 2016, at 22:29, R. Vestergaard <rkv at localdomain.dk> wrote:
> Greetings!
> I am trying to visualize a large-ish mesh (~500MB), and the interface is
> really slow.
> When rotating the mesh, I seems gmsh maxes out one CPU core, while the
> rest remain idle. Adding a Nvidia video card did not help speed things
> up.
> Any general tips on optimizing performance for interactive use?

Remove the display of invisible things (e.g. volume edges/faces)? Gmsh does not simplify the mesh when displaying it (e.g. like Paraview): everything that's in the mesh is put in the OpenGL vertex arrays... even if it's not visible.

> Regards,
> Ruben Vestergaard
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

Tetrahedron V, July 4-5 2016: http://tetrahedron.montefiore.ulg.ac.be
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