[mpich-discuss] MPICH_PORT_RANGE

[Jody Steadman]

Pavan,

That's what I needed. Thanks!

Jody

-----Original Message-----
From: Pavan Balaji [mailto:balaji at mcs.anl.gov] 
Sent: Wednesday, January 23, 2013 2:04 PM
To: discuss at mpich.org
Cc: Jody Steadman
Subject: Re: [mpich-discuss] MPICH_PORT_RANGE

Hi Judy,

We haven't tracked the number of ports that we need to create, but it'll be around 3-4 persistent ports + all the per-process ephemeral ports for inter-process connections that are setup on-demand.

 -- Pavan

On 01/23/2013 10:07 AM US Central Time, Jody Steadman wrote:
> Hi All,
> 
> What is the minimum number of ports required by MPICH for a single run?
> I'm in a situation where I need to limit the amount of ports in an 
> environment, but could not find any documentation that says for each 
> run MPICH needs x number of ports available in the range.
> 
> I'm using MPICH version 1.4.1p1 with Hydra.
> 
> Thanks,
> 
> Jody
> 
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--
Pavan Balaji
http://www.mcs.anl.gov/~balaji