[ET Trac] [Einstein Toolkit] #2182: NewRad's extrapolation methods for Gammas expect ghost zones to be valid

[Einstein Toolkit]

#2182: NewRad's extrapolation methods for Gammas expect ghost zones to be valid
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  Reporter:  Roland Haas            |      Owner:  (none)
      Type:  defect                 |     Status:  review
  Priority:  major                  |  Milestone:  ET_2018_08
 Component:  EinsteinToolkit thorn  |    Version:  development version
Resolution:                         |   Keywords:  ML_BSSN NewRad
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Changes (by Roland Haas):

 * status:  new => review


Comment:

 I have created a pull request with the fix, namely changing
 {{{InteriorNoSync}}} to {{{Interior}}} in McLachlan_BSSN.m which SYNCs
 ML_Gamma, ML_dtalpha and ML_dtbeta which are exactly the ones that
 {{{ExtrapolateGamma}}} extrapolates.

 I have run the GW150914 gallery example for 256 iterations and verified
 that the checkpoints at it=0 and it=256 agree (bitwise, other than the
 parameters group) between executables compiled using {{{InteriorNoSync}}}
 and {{{Interior}}}.

 The pull request can be found here:
 https://bitbucket.org/einsteintoolkit/mclachlaan/pull-requests/5/rhaas-
 sync-gamma/diff

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/2182#comment:4>
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