[Gmsh] METIS fill-reducing node sequence

[Jean-François Remacle]

I think that we have done that : 

gmsh your_file.geo -renumber -3 

will use Metis graph renumbering capabilities.

JF
Le 11 mai 2013 à 19:15, Bruce Gerdes <brucegerdes at gmail.com> a écrit :

> 
> I've just tried out the latest version of GMSH, the first I have used with METIS.  METIS has the capability of producing a fill-reducing node sequence suitable for skyline equation solvers.  I note that the element partition assignments are in the .MSH file, and with these, I could write something to generate the node sequence myself, but is there an easy way to do it with the GMSH implementation?  If not, it might prove to be a very useful and popular enhancement.  If GMSH could simply renumber the nodes according to the METIS sequence, the format of the .MSH file would remain as is, though the  partition information associated with the elements would then be superfluous and could be shut off, possibly with an option flag.
> 
> Bruce Gerdes
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Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
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