[Users] Llama and Coordinates::additional_overlap_size

[Christian D. Ott]

Hi All,

I've been playing around with the GW150914 par file and have been trying 
to set up a pure Cartesian AMR run with the exact same grid setup in the 
Cartesian region.

I noticed that

Coordinates::additional_overlap_size    = 3

(that appears to be required) not just increases the size of the 
cubed-sphere patches, but also of all patches in the Cartesian region, 
including refined regions. Is this a feature (if so, why?) or a bug?

Thanks,

  - Christian