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Subject: Re: [OMPI users] jobs with more that 2, 500 processes will not even start
From: John Hearns (hearnsj_at_[hidden])
Date: 2010-12-14 12:49:00


On 14 December 2010 17:32, Lydia Heck <lydia.heck_at_[hidden]> wrote:
>
> I have experimented a bit more and found that if I set
>
> OMPI_MCA_plm_rsh_num_concurrent=1024
>
> a job with more than 2,500 processes will start and run.
>
> However when I searched the open-mpi web site for the the variable I could
> not find any indication.

Lydia, a quick search find this page:
http://docs.sun.com/source/820-3176-10/appb-mca.html

It may be out of data, but does describe the parameters.
What is your setting for plm_rsh_agent (ie are you using ssh or rsh)
and also have you tried setting plm_rsh_debug