[Boost-bugs] [Boost C++ Libraries] #11074: boost::mpi an order of magnitude slower than pure MPI for sending vector of doubles

Subject: [Boost-bugs] [Boost C++ Libraries] #11074: boost::mpi an order of magnitude slower than pure MPI for sending vector of doubles
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-03-05 16:14:53


#11074: boost::mpi an order of magnitude slower than pure MPI for sending vector of
doubles
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 Reporter: ilja.j.honkonen@… | Owner: troyer
     Type: Bugs | Status: new
Milestone: To Be Determined | Component: mpi
  Version: Boost 1.57.0 | Severity: Problem
 Keywords: |
-------------------------------+---------------------
 As detailed in my email to boost users (h ttp://lists.boost.org/boost-
 users/2015/02/83807.php) it seems to take an order of magnitude longer to
 send a vector of doubles using boost::mpi than it takes using C bindings
 of MPI. I couldn't find anything in the documentation about optimizing
 transfers of standard types so I'd assume they are already optimized but
 that doesn't seem to be the case. Am I missing something or is there a
 serious performance issue in boost::mpi when sending (largeish) vectors of
 standard or more complex types?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11074>
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