[mpich-discuss] Merging stdout from multiple ranks

[Pavan Balaji]

On 04/12/2013 11:48 AM US Central Time, Rob Latham wrote:
> On Tue, Apr 09, 2013 at 09:57:12AM -0500, Pavan Balaji wrote:
>> 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.
> 
> Oh man how did I not know that?  What is the correct
> '-outfile-pattern' to use?    the -help doesn't tell you anything
> about the "pattern language"

You can get more information on that:

% mpiexec -outfile-pattern -help

 -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji