From dalcinl@XXXXXXXXX Mon Feb  4 15:20:40 2008
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Date: Mon, 4 Feb 2008 18:06:35 -0300
From: "Lisandro Dalcin" <dalcinl@XXXXXXXXX>
To: mpi-21@XXXXXXXXXXXXX
Subject: Re: [mpi-21] Proposal EH2 & MPI_INPLACE
Cc: "Hubert Ritzdorf" <ritzdorf@XXXXXXXXXXXX>,In-Reply-To: <479780D7.5040601@XXXXXXXXXXXX>
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Please take a look to this... Hubert's usage of aliased buffer
arguments seems to have some issues...

http://www.mpi-forum.org/docs/mpi-20-html/node7.htm


On 1/23/08, Hubert Ritzdorf <ritzdorf@XXXXXXXXXXXX> wrote:>
>
> Erez Haba wrote:
> > Using the send buffer pointer?
> >
> > Can you give an example?
> >
> >
> If you define 2 derived datatypes send_type and recv_type, which don't
> overlap,  you can execute for example MPI_Gather in the following way
>
> {
>     int buf[1000];
>
>      MPI_Gather (buf, 1, send_type, buf, 1, recv_type, 0, MPI_COMM_WORLD)=
;
>
>    ....
>
> }
>
> In this case buf is send and recv buffer of MPI_Gather and
> buf is IN and OUT argument of MPI_Gather in root process 0.
>
>
> Hubert
>
>


--=20
Lisandro Dalc=EDn
---------------
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