[Users] Question about iterations in ETK

[刘屿]

Hello Cactus users,

I have a question about tov_ET.par in CactusTutorial-08-2020.

CarpetRegrid2 only sets two levels on the grid structure.

INFO (Carpet): Grid structure (superregions, coordinates):
   [0][0][0]   exterior: [-6,-6,-6] : [28,28,28] : [2,2,2]
   [1][0][0]   exterior: [-3,-3,-3] : [26,26,26] : [1,1,1]


Why the course level evolves in time every 512 steps.


-------------------------------------------------
Iteration      Time | *me_per_hour | *ROBASE::rho
                    |              |      maximum
-------------------------------------------------
        0     0.000 |    0.0000000 |    0.0012800
      512     0.500 | 2.545256e+03 |    0.0012770


I noticed the parameter Carpet::max_refinement_levels    = 10, but it
does not seem to affect the grid structure.


I think this is important for us to set I/O and CarpetRegrid2::regrid_every.


Thank you
best regards
---------------------------
Yu Liu
PhD Student
Department of Astronomy
Beijing Normal University
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