[ET Trac] [Einstein Toolkit] #597: WeylScal4 should use the kranc script rather than calling Mathematica directly

[Einstein Toolkit]

#597: WeylScal4 should use the kranc script rather than calling Mathematica
directly
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  Reporter:  hinder                 |       Owner:                     
      Type:  enhancement            |      Status:  new                
  Priority:  minor                  |   Milestone:                     
 Component:  EinsteinToolkit thorn  |     Version:                     
Resolution:                         |    Keywords:  WeylScal4 testsuite
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Comment (by hinder):

 I can add the additional search locations for Kranc back to runmath.sh.
 The script will still be significantly simpler as all it needs to do is
 find Kranc.  Everything else should be handled in the kranc script to
 avoid duplication.

 The kranc script is more sophisticated than runmath.sh, since it runs
 Kranc using the !RunKranc package.  This package checks for any exceptions
 or messages generated and catches these, printing them in a sensible way.
 It then makes !MathKernel return a nonzero exit code (usually it returns 0
 even if a critical error has occurred).  It also sets things like the
 !PageWidth so that there are no continuation lines in the output, and runs
 mathematica in a way which does not print spurious things like In[] etc.

 In some cases, Kranc might output "Thorn XX generated successfully" if
 messages occurred during the computation. There is, unfortunately, no way
 that I have found to abort on the first message (see comments in
 !RunKranc.m).  If messages are generated, I cannot guarantee that the
 thorn is correct.

 Kranc's input validation is not perfect - the original aim was to be very
 liberal in what we accept to avoid having to write code to allow every
 different function that the user might want to use.  This might not have
 been a good idea.  Now that we have a good idea of what is needed, we can
 reverse that and accept nothing unless it is valid and expected, but this
 has not been done yet.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/597#comment:2>
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