[Gmsh] GMSH questions

[=?windows-1252?Q?Jean-Fran=8D=E7ois_Remacle?=]

idesbald van den bosch a écrit :
> Well, can you try both GMSH 2.0.8 and 1.65 on the attached file 
> containing only flat surfaces?
>
> For me:
> 1) GMSH 1.65, took 2 min 20 sec., 624 MB max mem
> 2) GMSH 2.0.8, took 16 min using MeshAdapt+Delauney, 147 MB max mem
>
-algo del2d and not -algo del

> so the speed is degraded by a factor of 8 (bad), but the memory is 
> divided by 4 (good).
>
> On the other hand, is the daily release available? where?
>
> Ides
>
> On 7/18/07, *Jean-Fran çois Remacle* <remacle at gce.ucl.ac.be 
> <mailto:remacle at gce.ucl.ac.be>> wrote:
>
>     idesbald van den bosch a écrit :
>     > Hello dear GMSH users,
>     >
>     > I am a GMSH user since quite a while now, and I have a question
>     > concerning the 2.0.x series. It seems that v2.0.X is much more
>     > RAM-memory efficient than its v1.65 counterpart. Unfortunately it is
>     > also much slower (~3 times from my limited experience).
>     >
>     The 2D mesh generator is slower, but I think it is more robust and
>     enables to mesh general curved surfaces (NURBS ...).
>     In the daily release, I have put back a classical isotropic delaunay
>     that is much faster even than the v1.65 triangulator. Yet,
>     it only works for planar surfaces for now, and for meshing the sphere
>     (look at the attachement). When I'll find some time, I'll
>     generalize this algo for general curved surfaces.
>
>     Normally, the 3D algorithms are much faster and more robust that the
>     ones of previous releases.
>     > 1) does anyone have the same observation?
>     > 2) is the slowness a necessary trade-off for memory efficiency?
>     >
>     No, it's just the algorithm.
>
>     > Thanks
>     >
>     > Ides van den Bosch
>     > Bilkent Computational Electromagnetics Lab
>     > Bilkent, Ankara
>     > Turkey
>     >
>     ------------------------------------------------------------------------
>
>     >
>     > _______________________________________________
>     > gmsh mailing list
>     > gmsh at geuz.org <mailto:gmsh at geuz.org>
>     > http://www.geuz.org/mailman/listinfo/gmsh
>     <http://www.geuz.org/mailman/listinfo/gmsh>
>     >
>
>
>     --
>     --------------
>     Prof. Jean-François Remacle
>     Department of Civil Engineering and
>     Center for Systems Engineering and Applied Mechanics
>     Université catholique de Louvain, Belgium
>     Tel : +32 10 472082
>     Fax : +32 10 472210
>
>
>
>
>
>
>


-- 
--------------
Prof. Jean-François Remacle
Department of Civil Engineering and
Center for Systems Engineering and Applied Mechanics 
Université catholique de Louvain, Belgium 
Tel : +32 10 472082 
Fax : +32 10 472210