[ET Trac] [Einstein Toolkit] #1898: Testsuites in QuasiLocalMeasures failing

[Einstein Toolkit]

#1898: Testsuites in QuasiLocalMeasures failing
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 Reporter:  knarf                  |       Owner:  knarf              
     Type:  defect                 |      Status:  new                
 Priority:  major                  |   Milestone:  ET_2016_05         
Component:  EinsteinToolkit thorn  |     Version:  development version
 Keywords:                         |  
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 At the time of writing, the issue has been fixed. However, I open (and
 close) this ticket to have some place to save information about it, in
 case it is of use later.

 Recently, QuasiLocalMeasures showed its testsuites failing on 2 processes.

 The problem, as it turns out, was that the output was generated not
 independent of the number of processes.

 This is the log from the commit that now fixes the immediate problem:
 (https://bitbucket.org/einsteintoolkit/einsteinanalysis/commits/76e24130c79d/)

 Change testsuites to use compact ASCII output and to not output
 information from within ghostzones. This makes the output independent
 from the number of processes, and allows the 2-process testsuites
 to succeed, even with the output generated using 1 process.

 The testsuites did succeed before this change, but only on one process.
 They did fail on more than one, due to completely different output
 format then. However, the testsuite mechanism didn't pick up this
 failure until only lately, due to multiple factors. One was (and still
 is) that Cactus has issues detecting errors when values are zero, due to
 relative errors being non-trivial to define. Ticket #1889 is about that.

 The other issue was that, while those lines were skipped, the different
 length of the output files was not detected until a fix for that was
 introduced recently, uncovering the problem here.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1898>
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