On 26 Mar 2012, at 09:43, Kentaro Takami wrote:

Hi,

I want to shrink the computational domain at recovery from checkpoint. For example, I want to change the domain from initial domain size:

coordbase::xmin = 0.0 coordbase::xmax = 50.00 coordbase::ymin = 0.0 coordbase::ymax = 50.0 coordbase::zmin = 0.0 coordbase::zmax = 50.00

to

coordbase::xmin = 0.0 coordbase::xmax = 30.00 coordbase::ymin = 0.0 coordbase::ymax = 30.0 coordbase::zmin = 0.0 coordbase::zmax = 30.00

Is it possible? Is there already such a mechanism?

As far as I know this is not possible using checkpoint/recovery. You might be able to use the "file reader" mechanism to make CarpetIOHDF5 read data from the checkpoint files as new "initial" data, and in that case, I think the grid does not have to be identical, though the points have to line up (there is no interpolation). I'm not sure how to use this method -- maybe someone else can help with that.