[ET Trac] [Einstein Toolkit] #1447: support "replay" mode

[Einstein Toolkit]

#1447: support "replay" mode
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 Reporter:  rhaas        |       Owner:                     
     Type:  enhancement  |      Status:  new                
 Priority:  major        |   Milestone:                     
Component:  Cactus       |     Version:  development version
 Keywords:               |  
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 for postprocessing it would be useful to have read in data in hdf5 files
 step by step and apply analysis routines to the saved data. For this it
 would be useful if there was some suport in the flesh and driver eg:

 * set time and iteration based on what is found in the data file
 * read grid structure from data
 * create grid functions for data in files without having to activate the
 corresponding thorns (which might be an evolution thorn whose evolution
 cannot be disabled or that depends on very many other thorns)

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1447>
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