rename ISLocalToGlobalMapping?

[Matthew Knepley]

It would probably be better. AOMapping and ISLocaltoGlobal have
about the same interface.

  Matt

On 8/27/07, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
>     Should AO and ISLocalToGlobalMapping be merged into
> a PetscMapping class?
>
> struct _p_ISLocalToGlobalMapping{
>   PETSCHEADER(int);
>   PetscInt n;                  /* number of local indices */
>   PetscInt *indices;           /* global index of each local index */
>   PetscInt globalstart;        /* first global referenced in indices */
>   PetscInt globalend;          /* last + 1 global referenced in indices */
>   PetscInt *globals;           /* local index for each global index between
> start and end */
> };
>
> typedef struct {
>   PetscInt N;
>   PetscInt *app;       /* app[i] is the partner for petsc[appPerm[i]] */
>   PetscInt *appPerm;
>   PetscInt *petsc;     /* petsc[j] is the partner for app[petscPerm[j]] */
>   PetscInt *petscPerm;
> } AO_Mapping;
>
> typedef struct {
>   PetscInt N;
>   PetscInt *app,*petsc;  /* app[i] is the partner for the ith PETSc slot */
>                          /* petsc[j] is the partner for the jth app slot */
> } AO_Basic;
>
>
>   Barry
>
>
>
> On Mon, 27 Aug 2007, Matthew Knepley wrote:
>
> > On 8/27/07, Barry Smith <bsmith at mcs.anl.gov> wrote:
> > >
> > >   Lisandro,
> > >
> > >     Sounds fine to me. ISLocalToGlobalMapping -> LGMapping
> >
> > If we are getting picky, I like long names, but I would get rid of IS
> > since it seems
> > more like implementation to me.
> >
> > >     BUT, AO is called AO, not AOMapping? Shouldn't it be AOMapping?
> > >    (then the AO_Mapping needs to be changed, why it is called
> > >     Mapping, Matt?, I do not know).
> >
> > The default AO implementation has the semantic guarantee that it is a
> > permutation.
> > The Mapping implementation allows subsets of the index space.
> >
> >   Matt
> >
> > >    Barry
> > >
> > >
> > > On Thu, 16 Aug 2007, Lisandro Dalcin wrote:
> > >
> > > > Did you never thinnk about the possibility of renaming
> > > > ISLocalToGlobalMapping to something shorter? IMOH it is painfuly long
> > > > name.
> > > >
> > > > In petsc4py, I call this LGMapping, because ISLocalToGlobalMapping, in
> > > > my view, is not an IS, and its usage is similar to AOMapping.
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
> >
>
>


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What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
their experiments lead.
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