[ET Trac] [Einstein Toolkit] #1817: Update LORENE library

[Einstein Toolkit]

#1817: Update LORENE library
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  Reporter:  knarf                  |       Owner:                     
      Type:  enhancement            |      Status:  review             
  Priority:  minor                  |   Milestone:  ET_2017_05         
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:                     
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Comment (by knarf):

 > I am not sure of phasing out is possible since the new code does not
 read old data files. Unless there is a converter for the data files this
 would render old files unusable and would mean that groups cannot
 reproduce old results.

 It wouldn't. It is still possible to read those using the old readers. You
 would use the same code that you used to reproduce old data. It's not as
 if old releases would go away. And if you really care about
 reproducibility, wouldn't you start with a Lorene input file, and not a
 Lorene output file?

 > For the same reason I do not think that renaming is an option instead
 the new LORENE should be named LORENE2 same as CarpetRegrid and
 CarpetRegrid2.

 That is not quite the same. It is quite conceivable that future changes in
 Lorene would break backward compatibility again and again. It cannot be
 our goal to support LORENE, LORENE2, LORENE3, and so on.  What we can, is
 support the version that was current at that time. If an older version is
 required - well, then it shouldn't be hard to dig out an old release.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1817#comment:15>
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