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
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  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:         
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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
 buffer.
 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.

 Regards

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6704#comment:3>
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