[ET Trac] [Einstein Toolkit] #473: Add support for parameter file scripts

[Einstein Toolkit]

#473: Add support for parameter file scripts
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 Reporter:  hinder       |       Owner:  eschnett
     Type:  enhancement  |      Status:  new     
 Priority:  minor        |   Milestone:          
Component:  SimFactory   |     Version:          
 Keywords:               |  
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 It is often useful to specify simulations by  higher-level descriptions
 than Cactus parameter files.  For example, when performing a convergence
 test, many parameters might change between simulations at different
 resolutions, and changing them all manually is tedious and error-prone.
 Similarly, it can be very useful to set parameters to values computed from
 simple expressions.  For this reason, I usually use a "parameter file
 script" as my basic description of a simulation.

 A parameter file script is a file with a ".rpar" extension which, when
 executed, generates a file in the same place but with a ".par" extension.
 The resulting file should be a valid simfactory parameter file. The
 attached patch adds support in SimFactory for these scripts. Use a script
 in place of a parameter file when invoking SimFactory. When a simulation
 is run, the script will be executed and the resulting parameter file will
 be used by Cactus.  Also attached is an example of a parameter file script
 written in Perl.  It looks exactly like a Cactus parameter file apart from
 a header and footer, and $-replacements in the main body.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/473>
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