Re: [Boost-bugs] [Boost C++ Libraries] #6704: Boost version of mpi_in_place

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6704: Boost version of mpi_in_place
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-03-20 10:24:46

#6704: Boost version of mpi_in_place
  Reporter: Alain Miniussi <alain.miniussi@…> | Owner: dgregor
      Type: Bugs | Status: new
 Milestone: To Be Determined | Component: mpi
   Version: Boost 1.48.0 | Severity: Problem
Resolution: | Keywords:

Comment (by Alain Miniussi <alain.miniussi@…>):

 The attached path propose a fix for this issue.
 It add the 'missing' all_reduce prototypes with only one input/output
 When appropriate, it is implemented by passing '''MPI_IN_PLACE''' to the
 existing boost implementations as a sendbuffer.
 When it is not possible (user types and user op), it re-introduces the
 missing buffer and uses a reduce/broadcast combination.
 The all_reduce test have been updated to check for in place and out of
 place array all_reduce operations.

 Please let me know if there is a problem wit this patch.


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