[ET Trac] [Einstein Toolkit] #1752: GRHydro con2prim is not a projection

[Einstein Toolkit]

#1752: GRHydro con2prim is not a projection
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  Reporter:  rhaas                  |       Owner:                     
      Type:  defect                 |      Status:  new                
  Priority:  minor                  |   Milestone:                     
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:  GRHydro            
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Comment (by rhaas):

 I am thinking of the con2prim method that Wolfgang Kastaun implemented in
 the current WhsikyThermal which I am told works well and does not rely on
 an initial guess.

 Keeping around the initial guess would also work. I think the memory costs
 are not that high since you don't need copies of all primitives, only the
 combinations that go into con2prim as an initial guess (which should be at
 most 3 scalars for the 3d Newton-Raphson inversion).

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1752#comment:2>
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