Hello Hee Il,

> I have encountered a bug in using HydroBase::temperature_evolution_method.
> If it is given explicitly by taking its default value "GRHydro", my
> runs crashed while reading a Lorene data. But if it's not given in the
> parameter file, it run smoothly but the results are the same with the case
> of taking "none".
The default value for HydroBase::temperature_evolution_method is "none"
(see
http://einsteintoolkit.org/thornguide/EinsteinBase/HydroBase/documentation.html#TBL-15-7-1)
 so not setting it explicitly is identical to setting it to "none".

> I found this bug when I was testing Hybrid EOS. I've tried to realize pure
> Polytrope (or Ideal_Fluid) by using the piecewise Hybrid EOS interface. But
> the results are showing around 10% more variations in rhomax compared to
> the pure Polytrope/Ideal_Fluid cases.
Can you provide the full log output (and ideally a parfile to reproduce
the issue) for stdout and stderr as well as any backtract.X.txt files
created?

If it crashes with a SEGFAULT or similar that would indeed be a bug.
Note that most of the LORENE data has been used with equations of
state that do not use temperature (usually tabulated ones only) so if
you are using one of LORENE's sample data sets and set this parameter
then even if the code apparently succeeds the evolution may not be
correct or what you expect.

Yours,
Roland

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