[ET Trac] [Einstein Toolkit] #1241: AHFinderDirect is not using the correct origin when "track_origin_from_grid_scalar = yes" when setting up ellipsoid
Einstein Toolkit
trac-noreply at einsteintoolkit.org
Fri Feb 1 01:52:33 CST 2013
#1241: AHFinderDirect is not using the correct origin when
"track_origin_from_grid_scalar = yes" when setting up ellipsoid
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Reporter: reisswig@… | Type: defect
Status: new | Priority: major
Milestone: | Component: EinsteinToolkit thorn
Version: | Keywords:
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Problem: My horizon will appear sometimes during the simulation at some
position. I don't know this position in advance, so I set origin_* and
AHFinderDirect::initial_guess__coord_sphere__*_center to zero initially in
my par-file. However, I have a grid scalar which tracks the coordinate
location where the horizon will eventually appear.
When the horizon finder starts to search for a horizon, it will first
setup the coordinate ellipsoid. This routine is executed *before* the new
origin is set from the grid scalar.
The tracking occurs in the routine Newton(...). The ellipsoid is set
before Newton(...) gets executed. Hence, the ellipsoid uses the value that
got set via parameters (which would be zero in my case).
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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1241>
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