[ET Trac] [Einstein Toolkit] #877: EinsteinExact arrangement should be added to the Einstein Toolkit

[Einstein Toolkit]

#877: EinsteinExact arrangement should be added to the Einstein Toolkit
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  Reporter:  hinder                 |       Owner:             
      Type:  task                   |      Status:  reviewed_ok
  Priority:  major                  |   Milestone:  ET_2012_05 
 Component:  EinsteinToolkit thorn  |     Version:             
Resolution:                         |    Keywords:             
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Comment (by barry.wardell):

 Replying to [comment:7 hinder]:
 > Barry, do you want to add one of the other maintainers as well, for
 example Frank?  This would be to do last-minute emergency fixes etc.

 I have given Frank and Bruno access.

 Replying to [comment:16 bmundim]:
 > >>4) In the documentation it says that the code ignores initial_shift,
 initial_lapse, initial_dtshift and initial_dtlapse. Per example above, I
 don't think this is true.
 > >It ignores initial_shift, initial_lapse, initial_dtshift and
 initial_dtlapse. The setting of the initial data for all of the ADMBase
 variables is determined only by the initial_data parameter.
 >
 > I am not sure I understood you here. The parameter file does need to set
 initial_lapse, etc, to ShiftedGaugeWave (otherwise it uses ADMBase
 defaults). So how come ShiftedGaugeWave is ignoring those parameters? It
 extends them indeed.

 The current situation is that the thorns extend all the parameters:
 ADMBase::initial_data, ADMBase::initial_lapse, ADMBase::initial_shift,
 ADMBase::initial_dtlapse, ADMBase::initial_dtshift,
 ADMBase::evolution_method. There are two scheduled functions in each
 thorn, one which is conditionally scheduled depending on
 ADMBase::initial_data being set to the thorn name and the other which is
 conditionally scheduled depending on ADMBase::evolution_method being set
 to the thorn name. Both of these functions unconditionally set all of the
 ADMBase variables (lapse, shift, three-metric, extrinsic curvature,
 dtlapse and dtshift). Ideally this should be improved at some point so
 that the other ADMBase parameters are queried before setting the relevant
 variables.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/877#comment:21>
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