Re: [gts-general] memory issue while remeshing

[Luis S. <lui...@gm...>]

2011/3/16 Márcio Ricardo Pivello <pi...@gm...>

> Luis, what is the configuration of your system?
>
>
>
> On 16 March 2011 12:33, Luis Saavedra <lui...@gm...> wrote:
>
>> 2011/3/15 Márcio Ricardo Pivello <pi...@gm...>
>>
>>> Hi all
>>>
>>> I've had some memory issues with GTS about remeshing so I decided to run
>>> a very simple test, which is reproduced bellow. The test is simple:
>>>
>>> 1. create a sphere using gts_surface_generate_sphere
>>> 2. n_edges = gts_surface_edge_number(s)
>>>    n_edges_coarsen = 0.7*n_edges
>>>    n_edges_refine = n_edges
>>> 3. Enter a loop:
>>> 3.1 apply gts_surface_coarsen using Lindstrom & Turk's algorithm and edge
>>> number as the stop criteria. stopdata = n_edges_coarsen
>>> 3.2 apply gts_surface_refine with default functions and stop_number as
>>> the stop critera. stop_data = n_edges_refine. The idea is to return the mesh
>>> to its original vertex_number, edge_number and face_number
>>>
>>> If I run this loop long enough I'll eventually run out of memory (8 GB
>>> RAM).
>>>
>>> How can I solve this problem?
>>>
>>> Could it be a bug in the *object_destroy functions?
>>>
>>> ------------------------------------
>>> code
>>> ------------------------------------
>>>
>>>
>>> #include "lagrangian.h"
>>> static gboolean stop_number (gdouble cost, guint number, guint * max)
>>> {
>>>    if (number > *max)
>>>       return TRUE;
>>>    return FALSE;
>>> }
>>>
>>> int main(int argc, char** argv)
>>> {
>>>
>>>    GtsVolumeOptimizedParams params;
>>>    params.volume_weight = 0.5;
>>>    params.boundary_weight = 0.5;
>>>    params.shape_weight = 1.0e+2;
>>>    GtsSurface *s = gts_surface_new(gts_surface_class(), gts_face_class(),
>>> gts_edge_class(), gts_vertex_class());
>>>    s=gts_surface_generate_sphere(s,7);
>>>    int n_edges_coarsen = 0.7*gts_surface_edge_number(s);
>>>    int n_edges_refine = gts_surface_edge_number(s);
>>>    int n=0, i=0;
>>>    double min_angle = 5.0*DEGREES_TO_RADIANS;
>>>    for(i=0;i<1000;++i)
>>>    {
>>>
>>> gts_surface_coarsen(s,(GtsKeyFunc)gts_volume_optimized_cost,&params,(GtsCoarsenFunc)gts_volume_optimized_vertex,&params,(GtsStopFunc)gts_coarsen_stop_number,
>>> &n_edges_coarsen, min_angle);
>>>       gts_surface_refine(s,NULL,NULL,NULL,NULL,stop_number,
>>> &n_edges_refine);
>>>    }
>>>
>>>
>>>    return 0;
>>> }
>>>
>>>
>>> Thanks for helping
>>>
>>>
>>>
>>> Márcio
>>>
>>> --
>>> Márcio Ricardo Pivello
>>> Universidade Federal de Uberlândia
>>> Faculdade de Engenharia Mecânica
>>> Laboratório de Mecânica dos Fluidos
>>> +55 (34) 3239 4040 ramal 618
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Colocation vs. Managed Hosting
>>> A question and answer guide to determining the best fit
>>> for your organization - today and in the future.
>>> http://p.sf.net/sfu/internap-sfd2d
>>> _______________________________________________
>>> Gts-general mailing list
>>> Gts...@li...
>>> https://lists.sourceforge.net/lists/listinfo/gts-general
>>>
>>>
>> Hi Márcio,
>>
>> I compiled and run the example (attached) and I have no problems you
>> mentioned, for this reason, I would like you to tell us what operating
>> system you use and what is you version of GTS in order to suggest some possible
>> solutions.
>>
>> regards,
>> Luis.
>>
>>
>> ------------------------------------------------------------------------------
>> Colocation vs. Managed Hosting
>> A question and answer guide to determining the best fit
>> for your organization - today and in the future.
>> http://p.sf.net/sfu/internap-sfd2d
>> _______________________________________________
>> Gts-general mailing list
>> Gts...@li...
>> https://lists.sourceforge.net/lists/listinfo/gts-general
>>
>>
>
>
> --
> Márcio Ricardo Pivello
> Universidade Federal de Uberlândia
> Faculdade de Engenharia Mecânica
> Laboratório de Mecânica dos Fluidos
> +55 (34) 3239 4040 ramal 618
>
>
> ------------------------------------------------------------------------------
> Colocation vs. Managed Hosting
> A question and answer guide to determining the best fit
> for your organization - today and in the future.
> http://p.sf.net/sfu/internap-sfd2d
> _______________________________________________
> Gts-general mailing list
> Gts...@li...
> https://lists.sourceforge.net/lists/listinfo/gts-general
>
>

ubuntu 10.10, but gts version is from gnugts.org:

$ svn co http://svn.gnugts.org/trunk gnugts

then, I configure with:

$ ./autogen.sh --disable-shared --enable-static CFLAGS='-O0 -ggdb'

and

$ make

I needed gtk-doc-tools package,

regards,
Luis