[ET Trac] [Einstein Toolkit] #991: PITTNullCode updates

[Einstein Toolkit]

#991: PITTNullCode updates
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  Reporter:  rhaas                  |       Owner:               
      Type:  defect                 |      Status:  review       
  Priority:  major                  |   Milestone:               
 Component:  EinsteinToolkit thorn  |     Version:               
Resolution:                         |    Keywords:  PITTNull code
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Comment (by anonymous):

 Please commit these changes. They don't affect the testsuites and Bela
 found them
 to be essential for the correctness of the code.

 The start-up related change could be logged as

 Improve the start-up algorithm of the characteristic marching scheme
 from the inner boundary towards scri+.

 All other changes are related to either improving IO (will correctly
 truncate/create diagnostic files) or allowing for flexible tuning of
 IO between checkpoints/restarts (by changing the parameters into
 steerable ones).

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/991#comment:5>
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