[GiDlist] Generation of nodes only

[Arturo di Gioia]

Hi,
I've got a problem with GiD 7.2.
I have to generate a mesh for my code. I need a surface mesh and a
points cloud over the volume. I wrote a module that exports the surface
mesh and the nodes of a tethraedral volume mesh generated in GiD. It
works well, but it's slow when the mesh gets serious. I saw the
possibility to generate only the nodes of the internal mesh, but if I
try to do it with a fine mesh (~100000 triangles, ~1000000 tetrahedra),
I get an error saying



Last diagnostics from tetrahedra mesher:
generating only points
***************************************
*******************************
For the Faces+Coordinates file:
*******************************
please enter file name
please increase mpoin, needed at least: 67202




Less aggressive settings give the error



Last diagnostics from tetrahedra mesher:
after first change

generated total surface mesh for the
all surfaces before 3-d gg contains:
nr. of faces nface= 75600
nr. of points npoin= 37802

please increase mboun, needed: 37802
== stopped



Everything works with a very coarse mesh. Is there any quick workaround
to this? Thanks

--
Arturo di Gioia arturo.digioia at ing.unitn.it

[Enrique Escolano]

The generator of "only points" in a volume is an external mesher, and it
have fixed limits
in the size of some arrays. It is deprecated, and for future versions is
planned to include
a internal "only points" generator.

You must use by now the tetrahedral generator.

Enrique
----- Original Message -----
From: "Arturo di Gioia" arturo.digioia at ing.unitn.it
To: gidlist at gatxan.cimne.upc.es
Sent: Tuesday, April 22, 2003 7:45 PM
Subject: [GiDlist] Generation of nodes only


Hi,
I've got a problem with GiD 7.2.
I have to generate a mesh for my code. I need a surface mesh and a
points cloud over the volume. I wrote a module that exports the surface
mesh and the nodes of a tethraedral volume mesh generated in GiD. It
works well, but it's slow when the mesh gets serious. I saw the
possibility to generate only the nodes of the internal mesh, but if I
try to do it with a fine mesh (~100000 triangles, ~1000000 tetrahedra),
I get an error saying



Last diagnostics from tetrahedra mesher:
generating only points
***************************************
*******************************
For the Faces+Coordinates file:
*******************************
please enter file name
please increase mpoin, needed at least: 67202




Less aggressive settings give the error



Last diagnostics from tetrahedra mesher:
after first change

generated total surface mesh for the
all surfaces before 3-d gg contains:
nr. of faces nface= 75600
nr. of points npoin= 37802

please increase mboun, needed: 37802
== stopped



Everything works with a very coarse mesh. Is there any quick workaround
to this? Thanks

--
Arturo di Gioia arturo.digioia at ing.unitn.it

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