[Users] removing refinement levels in Carpet

[Erik Schnetter]

Luca

The parameters in CarpetRegrid2 are only used at startup. At run time,
and after recovering, the corresponding grid scalars are used.

The easiest way to remove a level is to decrease the num_levels grid
scalar in CarpetRegrid2, and then to regrid. Any thorn can reduce this
grid scalar when it "inherits" from CarpetRegrid2.
Checkpointing/recovering is not necessary; however, if you want to do
this with a checkpointed simulation, then you can remove a level
before the first time step after recovering.

-erik

On Sun, May 1, 2011 at 6:50 PM, Luca Baiotti <baiotti at ile.osaka-u.ac.jp> wrote:
> Hello,
>
> I would like to remove the finest refinement level of a running
> simulation. I thought of restarting from checkpoint with a decreased
> value for the CarpetRegrid2 parameters num_levels_?, but they are not
> steerable.
>
> Is there any way to achieve this?
>
>
> Cheers,
>
> Luca
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-- 
Erik Schnetter <schnetter at cct.lsu.edu>   http://www.cct.lsu.edu/~eschnett/