[Boost-bugs] [Boost C++ Libraries] #9208: MPI failure on big endian machines

Subject: [Boost-bugs] [Boost C++ Libraries] #9208: MPI failure on big endian machines
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-10-07 21:46:15

#9208: MPI failure on big endian machines
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 Reporter:  Steve Nolen <drnuke@…>  |      Owner:  troyer
     Type:  Bugs                    |     Status:  new
Milestone:  To Be Determined        |  Component:  mpi
  Version:  Boost 1.54.0            |   Severity:  Showstopper
 Keywords:  mpi, endian             |
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 On big endian machines (i.e. LLNL's Sequoia) the boost MPI implementation
 is broken.  When a class's version is written to a packed_oarchive, the
 value (an unsigned int, uint32) is written as a 1-byte integer.  The
 process sort of works on little endian machines where the least
 significant byte is being copied.  On a big endian machine, this 1st byte
 is always going to be zero.  I have put together a patch that explicitly
 converts the uint32 to a uint8 to avoid this issue.  Feedback is
 appreciated.

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/9208>
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