[ET Trac] [Einstein Toolkit] #1995: McLachlan constraint tests fail

[Einstein Toolkit]

#1995: McLachlan constraint tests fail
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  Reporter:  hinder                 |       Owner:                                                   
      Type:  defect                 |      Status:  confirmed                                        
  Priority:  critical               |   Milestone:  ET_2017_05                                       
 Component:  EinsteinToolkit thorn  |     Version:  development version                              
Resolution:                         |    Keywords:  McLachlan constraints tests compiler optimization
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Comment (by hinder):

 OK, good!  Which test was this?  Are the ADMBase variables also still the
 same between -O1 and -O2?  It might be that the default CarpetIOASCII
 out_precision (15) is not high enough to see the differences, which might
 be amplified up by the derivatives taken when computing the constraints.
 The tolerance for this test has been adjusted:
 {{{
  # incr. abstol since we expect some values of order 100 in the metric
 ABSTOL 1.e-10
 }}}
 in Dissipation/test/test.ccl.

 I was able to include NoExcision in the thornlist and compile on Minerva
 with 17.0.4 with no problems (16.0.1 gives an internal compiler error when
 compiling NoExcision, which is why it was disabled in the first place).
 The Dissipation tests fails due to large constraints, as reported for the
 other versions.  So the problem is still present in the latest released
 version of the compiler.  I'm compiling with 16.0.3 now.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1995#comment:39>
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