[Carpet] regridding?

[Bela Szilagyi]

Coming back to the issue -- the idea is that, while regridding from any level 
of any other level is supported (or at least, possible) the postregrid bin 
assocciated with a particular redefined grid is not scheduled.

Isn't this more misleading than having coarser-than-current-level regrid 
requests delayed?  In fact this is done when one requests dropping of the 
finest level.  With post-regrid on the next coarser level.


> > I would say that you should be allowed to change the coarser grid (it is
> > one way of implementing true AMR) but should only be able to do it when
> > the grids are in sync.  I would consider anything else to be an error in
> > the regridding algorithm, not necessarilly in Carpet.
>
> Certainly, testing for this criteria (either by carpetregrid::regrid_every
> or within the regrid-requesting thorn) is doable.
>
> > Ian
> >
> > > I would propose one of the following:
> > > 1. explicitely forbid requests of refinement level changes of a coarser
> > > grid than the current one 2. delay these requests till evolution gets
> > > to the appropriate coarser grid 3. schedule postregrid for the coarser
> > > levels as well
> > > 4. schedule postregrid for all levels at any regrid event.
> > > 5. whatever...
> > >
> > >
> > > On Friday 05 May 2006 15:07, Bela Szilagyi wrote:> Should we introduce
> > > a parameter that will tell CarpetIOHDF5  that at> recovery it should
> > > read the value of CarpetRegrid::coordinates (and> possibly other
> > > carpetregrid parameters) from the checkpoint file rather> than from the
> > > parameter file?  This would go along the same lines as>>
> > > CarpetIOHDF5::use_reflevels_from_checkpoint>> introduced by Christian
> > > Ott.>> On Thursday 04 May 2006 17:31, Erik Schnetter wrote:> > On May
> > > 4, 2006, at 09:30:17, Bela Szilagyi wrote:> > > Can one (or -- is one
> > > supposed to) adjust carpet grid structure by> > > steering> > >
> > > dynamically the parameter CarpetRegrid::coordinates  ?> >> > Yes, this
> > > is supposed to work. -- Bela
> > > Szilagyi----------------------------------------------------Max-Planck-
> > >In stitut für GravitationsphysikAlbert-Einstein-InstitutTel: +49 331 567
> > > 7632Fax: +49 331 567
> > > 7649----------------------------------------------------
> > > _______________________________________________developers mailing
> > > listdevelopers at lists.carpetcode.orghttp://lists.carpetcode.org/listinfo
> > >/d evelopers

-- 
Bela Szilagyi
----------------------------------------------------
Max-Planck-Institut für Gravitationsphysik
Albert-Einstein-Institut
Tel: +49 331 567 7632
Fax: +49 331 567 7649
----------------------------------------------------