On Tuesday September 20 2011 09:12:36 Anders Logg wrote: > B11;rgb:0000/0000/0000On Tue, Sep 20, 2011 at 08:49:13AM -0700, Johan Hake wrote: > > On Tuesday September 20 2011 08:45:01 Garth N. Wells wrote: > > > On 20 September 2011 16:37, Johan Hake <[email protected]> wrote: > > > > Ok, sounds promising! > > > > > > > > Just to get it straight: > > > > 1) The old MeshFunction file format will not be supported in > > > > parallel > > > > > > Even better - your old file won't work in serial! The MeshFunction > > > output is flawed (for edges and faces) because the edge and facet > > > numbering is not specified by the mesh file. Edge and face numbering > > > is determined by the library that constructs a mesh. The new format > > > will be the same in serial and parallel. > > > > Well, if you use the library (DOLFIN) to generate your MeshFunction you > > are safe. > > Not really, since it may break if we make some optimizations in > TopologyComputation that happen to change the order in which we > create edges and faces.
I have heard this now for 4 years, but the optimization has not been done :) But get me correct, I like the new solution! Johan > -- > Anders > > > > > 2) To read a MeshFunction from file in parallel I need to convert > > > > > > > > all my MeshFunctions to MeshValueCollections and store them. Then > > > > I > > > > > > > > use that file to initiate a MeshFunction in parallel? > > > > > > I'll add something so if you read and old-style MeshFunction, and then > > > write it to file, it will be written in the new format. > > > > So the file format of MeshValueCollection and MeshFunction will now be > > the same? > > > > > > Johan > > > > > Garth > > > > > > > Doable! > > > > > > > > Johan > > > > > > > > On Tuesday September 20 2011 01:17:25 Garth N. Wells wrote: > > > >> On 20 September 2011 07:10, Anders Logg <[email protected]> wrote: > > > >> > MeshFunctions? I think MeshValueCollection works but not yet > > > >> > MeshFunctions. > > > >> > > > > >> > My suggestion is to either store MeshFunctions as > > > >> > > > > >> > MeshValueCollections: > > > >> > <mesh_function> > > > >> > > > > >> > <mesh_value_collection> > > > >> > </mesh_value_collection> > > > >> > > > > >> > </mesh_function> > > > >> > > > > >> > (when dim is not 0 or D) or to say that parallel I/O for > > > >> > MeshFunction is not supported and make the conversion between > > > >> > MeshFunction and MeshValueCollection easy (constructors). > > > >> > > > >> I think that the suggestion to store MeshFunctions as > > > >> MeshValueCollections is the best solution. To keep it simple, I > > > >> would use MeshValueCollection for entities of any dimension with a > > > >> tweak of the tags for vertices. > > > >> > > > >> The tools are in place to read MeshValueCollections from a separate > > > >> file. Just a few small additions are required to make it > > > >> work (right now the domain data needs to be in the mesh file). Once > > > >> this is in place reading MeshFunctions should be easy. I'll add the > > > >> code today. > > > >> > > > >> Garth > > > >> > > > >> >> It seems to work now! > > > >> >> > > > >> >> Kent > > > >> >> > > > >> >> On 20 September 2011 01:06, Johan Hake <[email protected]> wrote: > > > >> >> How far are we from a functional reading of MeshFunctions in > > > >> >> parallel? > > > >> >> > > > >> >> Johan > > > >> >> > > > >> >> _______________________________________________ > > > >> >> Mailing list: https://launchpad.net/~dolfin > > > >> >> Post to : [email protected] > > > >> >> Unsubscribe : https://launchpad.net/~dolfin > > > >> >> More help : https://help.launchpad.net/ListHelp > > > >> >> > > > >> >> _______________________________________________ > > > >> >> Mailing list: https://launchpad.net/~dolfin > > > >> >> Post to : [email protected] > > > >> >> Unsubscribe : https://launchpad.net/~dolfin > > > >> >> More help : https://help.launchpad.net/ListHelp > > > >> > > > > >> > _______________________________________________ > > > >> > Mailing list: https://launchpad.net/~dolfin > > > >> > Post to : [email protected] > > > >> > Unsubscribe : https://launchpad.net/~dolfin > > > >> > More help : https://help.launchpad.net/ListHelp > > > >> > > > >> _______________________________________________ > > > >> Mailing list: https://launchpad.net/~dolfin > > > >> Post to : [email protected] > > > >> Unsubscribe : https://launchpad.net/~dolfin > > > >> More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : [email protected] Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
