CGAL users discussion list

[Kwok Jasper <>]

Thank you for your reply.

I have already optimized the compiler and made sure that it does not have the debugging option selected before.
May I ask is it possible that it is related to the memory in my PC?

Currently, I am using Window XP and have only less than 10 GB left in my C drive.
May I ask if the running may be improved through increasing the memory left?
If it may help, how many GB shall I increase?

Thanks



> Date: Sun, 1 Feb 2009 09:43:45 +0100
> From:
> To:
> Subject: Re: [cgal-discuss] about running time related to CGAL triangiulation
>
> Kwok Jasper wrote:
> > Excuse me.
> >
> > I have tried to use the 3D Delaunay Triangulation in CGAL in Visual C++
> > with the following declaration.
> >
> > typedef CGAL::Exact_predicates_inexact_constructions_kernel K1;
> > typedef CGAL::Delaunay_triangulation_3<K1> Triangulation;
>
> Also, use t.insert(begin(),end()). It uses spatial sorting, which makes
> the construction much faster. See the manual.
>
> > After I have set the compiler optimization in Visual C++,
> > when I insert 362272 points into the triangulation, it takes more than
> > 20 minutes
> > and after the insertion, when I use the iterator such as the
> > Finite_facets_iterator, it also takes a lot of time.< br>
>
> > May I ask if the running time is normal?
>
> no, it is not normal
>
> > Or in fact it should be faster in the normal case?
>
> It should be much faster (a few seconds, depending on your computer)
> Be careful to compile your code with the appropriate options (optimized
> and without debugging options).
>
> > Thank you very much for your attention
> >
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