[mpich-discuss] Merging stdout from multiple ranks

[Matthieu Dorier]

That would be fine too, thanks!

Matthieu

----- Mail original -----
> De: "Pavan Balaji" <balaji at mcs.anl.gov>
> À: discuss at mpich.org
> Cc: "Matthieu Dorier" <matthieu.dorier at irisa.fr>
> Envoyé: Mardi 9 Avril 2013 16:57:12
> Objet: Re: [mpich-discuss] Merging stdout from multiple ranks
> 
> 
> On 04/09/2013 09:50 AM US Central Time, Matthieu Dorier wrote:
> > Is there any option in Mpich to make sure a line sent to stdout
> > from one
> > rank is not broken by a line sent by another rank when mpirun
> > merges the
> > output of all ranks?
> 
> Not when everything is dumped to the same output from mpiexec (e.g.,
> stdout), since that'll require an arbitrary amount of buffering at
> mpiexec to do that.  You could redirect the output to separate
> per-rank
> files.  mpiexec -help should give you information on that.
> 
>  -- Pavan
> 
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji
>