CGAL users discussion list

[Sebastien Loriot <>]

You indeed need a CGAL fork in your own github space

something like https://github.com/sloriot/CGAL where sloriot is your 
github id.

Then select the branch and click on "Pull request" on the line below
or use a link
https://github.com/GITHUBID/cgal/pull/new/BRANCH_NAME

with GITHUBID= you id and BRANCH_NAME = name of the branch

Do not hesitate to ask for help if you are stuck.

Best,

Sebastien.

On 4/17/21 10:50 AM, Yann GAVET ( via cgal-discuss Mailing 
List) wrote:
> Thank you Sebastien,
>
>
> I will do this pull request, probably next month.
>
> I am not used to this process, accept my apologies for these naive 
> questions: Do you request a fork before submitting a PR ? Is there a 
> page describing this process with cgal ?
>
> best regards
>
> yann
>
>
> Le 17/04/2021 à 07:12, Sebastien Loriot ( via 
> cgal-discuss Mailing List) a écrit :
> > Except if you changed the default traits to use some caching for 
> > circumcenters, this particular location should not be problematic
> > as the container is local.
> >
> > There are some flags set in faces so it might be related to that.
> > However without seeing the modifications you did, it is hard to
> > tell you what can go wrong. If you want you can open a pull-request
> > on github and I'm sure developer will be happy to help making work.
> >
> > Best regards,
> >
> > Sebastien.
> >
> > On 4/16/21 5:46 PM, Yann GAVET ( via cgal-discuss Mailing 
> > List) wrote:
> > > Dear all,
> > >
> > >
> > > I am trying to modify the function lloyd_optimize_mesh_2 in order to 
> > > have a parallel computation of all movements. As a reminder, each 
> > > vertex of the triangulation should move to the geometrical center of 
> > > its cell (defined by the voronoi diagram).
> > >
> > > When I simulate the threaded behavior (using a serie of different 
> > > function calls), I have to problem and it seems to work. However, if 
> > > I use actual threads, I get an error that occurs at 
> > > Constrained_voronoi_diagram_2.h:360 (this line is 
> > > polygon.push_back(m_cdt.circumcenter(face));)
> > >
> > > This error is malloc(): unaligned tcache chunk detected
> > >
> > >
> > > Thus, my question is for cgal experts: do you think this method could 
> > > be parallel ? is there any static variable that could not be used by 
> > > multiple threads ?
> > >
> > > Thank you very much for your time
> > >
> > > Yann