[ET Trac] [Einstein Toolkit] #836: Improve MPI barriers in Carpet

[Einstein Toolkit]

#836: Improve MPI barriers in Carpet
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 Reporter:  hinder       |       Owner:  eschnett
     Type:  enhancement  |      Status:  new     
 Priority:  minor        |   Milestone:          
Component:  Carpet       |     Version:          
 Keywords:               |  
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 The attached patches add functionality to the MPI barriers in Carpet:

 [PATCH 1/2] Add parameter sync_barriers to insert an MPI barrier before
 every sync

 This causes each process to wait for all the others to reach this point in
 the execution.  This will happen anyway (for most of the processes) during
 the sync, and adding this barrier means that this time is not included in
 the sync timer.  Also add a new timer to time this barrier.

 [PATCH 2/2] Carpet: Add a timer around the scheduled functions barrier

 OK to apply?

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/836>
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