[ET Trac] [Einstein Toolkit] #2059: SimFactory should detect the number of cores automatically

[Einstein Toolkit]

#2059: SimFactory should detect the number of cores automatically
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  Reporter:  hinder       |       Owner:                     
      Type:  enhancement  |      Status:  review             
  Priority:  minor        |   Milestone:                     
 Component:  SimFactory   |     Version:  development version
Resolution:               |    Keywords:                     
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Comment (by rhaas):

 Steve: please apply (the version where you used popen again since
 subprocess is to "new", ie past python 2.3). My suggestion is still to use
 as many MPI ranks as there there NUMA domains and threads inside, even if
 this is slower, since this gives a setup more similar to what we usually
 have on clusters so that one can eg usefully debug OpenMP code. Speed is
 reduced by that but then speed on a workstation should not be an issue I
 believe.

 I would suggest to set a deadline by which comments need to be in then
 commit this.

 Since we are unlikely to reach consensus
 (https://tools.ietf.org/html/rfc7282#section-2) in the sense that we all
 agree on one solution: I would ''prefer'' one I have outlined above but do
 not ''object'' to the one that uses pure MPI (and that Erik seems to
 favor).

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/2059#comment:23>
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