[ET Trac] [Einstein Toolkit] #744: Define API for finding out which MPI processes share a host

[Einstein Toolkit]

#744: Define API for finding out which MPI processes share a host
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  Reporter:  eschnett     |       Owner:     
      Type:  enhancement  |      Status:  new
  Priority:  major        |   Milestone:     
 Component:  Cactus       |     Version:     
Resolution:               |    Keywords:     
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Comment (by jtao):

 I didn't know that a ticket had been created already. :) Ian encouraged me
 to post to the list and create a ticket.

 Just for references:


 {{{
 // return a unique id for the local host;
  int CCTK_MyHost(cGH *cctkGH);

  // return total number of nodes;
  int CCTK_nHosts(cGH *cctkGH);

  // return number of mpi processes on a given host
  int CCTK_nProcsOnHost(const int host);

  // return a list of process on a given host
  void CCTK_ProcsOnHost(const int host, int *procs);

 }}}

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/744#comment:1>
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