[ET Trac] [Einstein Toolkit] #336: Increase timestamp speed

[Einstein Toolkit]

#336: Increase timestamp speed
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 Reporter:  eschnett              |       Owner:     
     Type:  enhancement           |      Status:  new
 Priority:  minor                 |   Milestone:     
Component:  EinsteinToolkit trac  |     Version:     
 Keywords:                        |  
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 The current time stamp mechanism in simfactory creates files with a scheme
 "timestamp-NUMBER", where NUMBER denotes the time. Looking for such files
 requires iterating over the directory.

 Instead, we can use a fixed file name, and use the file creation time as
 time stamp. (We can additionally write the time stamp into the file,
 probably in a human readable form.) Accessing this time stamp is a single
 "stat" operation that should be quicker.

 This method has the additional advantage that the time stamps always have
 the same file name.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/336>
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