[Ns-bugs] [Bug 1079] MPI code doesn't compile

[code@nsnam.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=1079

Josh Pelkey <jpelkey at gatech.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #6 from Tom Henderson <tomh at tomh.org> 2011-04-22 00:40:57 EDT ---
Created attachment 1091
  --> http://www.nsnam.org/bugzilla/attachment.cgi?id=1091
patch to fix

This patch implements Gustavo's suggestion; it was tested against
third-distributed and simple-distributed.

--- Comment #7 from Josh Pelkey <jpelkey at gatech.edu> 2011-04-26 15:01:26 EDT ---
Created attachment 1099
  --> http://www.nsnam.org/bugzilla/attachment.cgi?id=1099
mpi results

I've run some performance tests using the nms-p2p-nix-distributed example
(slightly modified to reduce the total wall clock time). It looks like there is
minimal difference on the total simulation time with this patch. I tested
ns-3-dev with this patch against the old ns-3.9 branch. I also tested it
against ns-3.9 with this patch applied for a more direct test. Results
attached. In summary, there is little or no difference with this patch applied.
It seems like ns-3-dev performs better in general though, possibly due to the
re-modularization efforts.

I pushed this fix to ns-3-dev, changeset 5feb5c87d56f

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