[Gmsh] Gmsh is slow after importing igs

Christophe Geuzaine cgeuzaine at ulg.ac.be
Mon May 22 20:40:21 CEST 2017

Gmsh does not convert between CAD formats (so you cannot reliably "convert" an iges file to geo file). Also, use step files instead of iges files if you want to import data in Gmsh: step files contain the full topology, which makes producing conformal meshes much easier.

Could you try importing the step version of your model in Gmsh 3.0.2 and let us know if it's still slow? If it is, could you send a representative model that exhibits this slowness?



> On 20 May 2017, at 07:14, 李宗耀 <nwpulizongyao at qq.com> wrote:
> Dear Gmsh support team,
>     I have a complex geometry built in NX and I save it as .igs file. Gmsh is slow after importing the igs file. I have tried to set  Geometry.AutoCoherence option to 0 at the end of .geo file. But it doesn't work. Is there any tips? I wonder if I could convert .igs to .geo directly(I don't mean using "Merge", just convert .igs file to gmsh geometry file). 
>     Thank you very much. I am looking forward for your reply.
>     Good wishes!
>     Zongyao Li From China
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

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