[mpich-discuss] MPI scatter algorithms for BlueGene/P

[Khalid Hasanov]

Pavan, thank you for your reply.  I will try to find out from the sources
as you suggested.

Regards,
Khalid

On Mon, Mar 2, 2015 at 1:38 AM, Balaji, Pavan <balaji at anl.gov> wrote:

>
> BG/P is such an ancient machine, that we don't even remember anymore,
> unfortunately.
>
> You might be able to pull out the old releases of mpich (the ones where
> there used to be a dcmfd device in the src/mpid directory), and check.
>
>   -- Pavan
>
> > On Mar 1, 2015, at 6:36 PM, Khalid Hasanov <xalid.h at gmail.com> wrote:
> >
> > Hello,
> >
> > First of all, I am not sure if this group is the right place for this
> question. If not I apologize for asking unrelated question.
> >
> > I read two papers about optimizing MPI collective communications on BG/L
> and BG/P.
> > (Optimization of MPI Collective Communication on BlueGene/L Systems
> > and MPI Collective Communications on The Blue Gene/P Supercomputer:
> Algorithms and Optimizations respectively). However, these two papers do
> not mention anything about MPI scatter and gather operations, I wonder if
> these two collective operations have been optimized for BlueGene or they
> use exactly the same algorithms from MPICH. Any reference appreciated.
> >
> >
> > Best regards,
> > Khalid
> > _______________________________________________
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> --
> Pavan Balaji  ✉️
> http://www.mcs.anl.gov/~balaji
>
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