[MOAB-dev] Order of elements in loaded meshes

[Iulian Grindeanu]

Hello,
I still have a question: What about if the mesh is read in parallel? 

Also, for example mbconvert accepts multiple input files. The order within each input file is preserved, isn't it? 

Another question: 
Assume some mesh is already in memory. A load_mesh() command will look for empty sequences for node handles, element handles. The order of element handles will be preserved, I assume (it is the job of the ReadUtilIface class)


----- Original Message -----
> In most cases, I think order is conserved. The exception will be if
> the particular reader changes, but you knew that.
> Another exception will be comparing order between an application where
> the mesh is generated vs. where the mesh is read
> in clean, but your cases didn't really cover that.
> 
> - tim
> 
> On 02/09/2011 05:06 PM, Steve Jackson wrote:
> > When MOAB loads a mesh file, the mesh elements have a certain order
> > in EntityHandle space. I'd like to know how reliable/repeatable this
> > ordering is. (Note I'm asking about the order of handles, not their
> > specific values.)
> >
> > For a given mesh file, what guarantees do I get about the order of
> > EntityHandles...
> >
> > * ...between separate runs of the same program? (i.e. May I assume
> > the order of entity handles will be the same every time MOAB loads a
> > file?)
> >
> > * ...between runs of two different programs using the same MOAB
> > library? (Does the order of entities loaded from a file depend on
> > the program that is calling MOAB?)
> >
> > * ...between runs of two programs using different versions of MOAB?
> > (Does the order of entities depend on changes to MOAB, even if those
> > changes do not affect the specific file reader that loads the mesh?)
> >
> > What I am looking for is a way to consistently refer to "the
> > 1st/2nd/nth tetrahedron" in a given file, preferably without
> > resorting to tags.
> > ~S
> 
> --
> ================================================================
> "You will keep in perfect peace him whose mind is
> steadfast, because he trusts in you." Isaiah 26:3
> 
> Tim Tautges Argonne National Laboratory
> (tautges at mcs.anl.gov) (telecommuting from UW-Madison)
> phone: (608) 263-8485 1500 Engineering Dr.
> fax: (608) 263-4499 Madison, WI 53706