Re: [Boost-users] [MPI] optimization for homogeneous clusters

Subject: Re: [Boost-users] [MPI] optimization for homogeneous clusters
From: Matthias Troyer (troyer_at_[hidden])
Date: 2010-07-09 13:42:45

On 21 Jun 2010, at 14:06, Riccardo Murri wrote:

> Hello,
> 
> The manual for Boost.MPI 1.43.0 states: "More optimizations are
> possible on homogeneous machines, by avoiding MPI_Pack/MPI_Unpack
> calls but using direct bitwise copy. This feature can be enabled by
> defining the macro BOOST_MPI_HOMOGENEOUS when building Boost.MPI and
> when building the application."
> 
> What is the correct way of building Boost.MPI for homogeneous systems?
> Should I just uncomment the relevant line in boost/mpi/config.hpp, or
> is there another (and recommended) way through Jam files?
> 
> Thank you very much in advance for any suggestion.
> 
> Best regards,
> Riccardo
> 
> 
> -- 
> Riccardo Murri, Hadlaubstr. 150, 8006 Zürich (CH)

Hi Riccardo,

Sorry for the late reply - I have been away from the internet for a few weeks and only slowly catch up with my e-mail. AFAIK Doug Gregor did not finish the bjam support for BOOST_MPI_HOMOGENEOUS, thus just comment out that line you refer to.

Matthias