Re: [Boost-mpi] Fwd: mpi: MPI_MAX_LOC

Subject: Re: [Boost-mpi] Fwd: mpi: MPI_MAX_LOC
From: Matthias Troyer (troyer_at_[hidden])
Date: 2013-10-14 04:57:31

On 14 Oct 2013, at 10:53, MM <finjulhich_at_[hidden]> wrote:

> Hello
> In a problem of getting the maximum of a multi-variable function, I would use mpi::reduce and provide it with a function object that compares the evaluations of this function.
> 
> Each process evaluates a part of the space, ie a number of n-tuples of the n-dimension space.
> 
> How do I get the n-tuple that yields the max of f(), given that MPI_MAXLOC is not available in boost mpi?
> 
> Thanks
> 
> MM

Hi MM,

you can just provide your own function object to the boost::mpi::reduce function

Matthias