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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