[Developers] Evolving grid arrays in time
tbode at gravity.psu.edu
Wed Sep 26 11:36:12 CDT 2007
Has there been any further work done on evolving grid arrays in time with
MoL since the discussion last year?
On Mon, 4 Sep 2006, Ian Hawke wrote:
> On Tue, 2006-08-29 at 19:19 -0500, Erik Schnetter wrote:
> > It is currently not possible to evolve grid arrays in time with MoL
> > when using mesh refinement. At the moment, MoL would evolve grid
> > arrays multiple times per time step -- once for each refinement
> > level. I am toying with different ideas to make Carpet, MoL, and
> > grid arrays work together.
> > MoL would need additional code to ensure that grid arrays are evolved
> > only in global mode.
> > When grid functions are evolved in time, one cannot access the values
> > of grid arrays which are also evolved in time. This is so because
> > their time stepping is non commensurable.
> > Comments?
> This final point was the thing that made me think that it wasn't worth
> doing, as there are few tasks that I could think of fitting this scheme
> that couldn't be done with much less effort by post-processing. I would
> only see the value if the evolved grid array was going to be used in the
> evolution, and hence their values will need to be accessed.
> It might be possible to allow this with a careful use of timelevels, but
> that would require quite a bit of communication between Carpet and MoL I
> would think.
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