Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] run orterun with more than 200 processes
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-03-01 18:05:26

You might try putting that list of hosts in a hostfile instead of on the cmd line - you may be hitting some limits there.

I also don't believe that you can add an orted in that manner - orterun will have no idea how it got there and is likely to abort.

On Mar 1, 2012, at 3:20 PM, Jianzhang He wrote:

> Hi,
> I am not sure if this is the right place to post this question. If you know where it is appropriate, please let me know.
> I need to run application that launches 200 processes with the command:
> 1) orterun --prefix ./ -np 200 -wd ./ -host,1,2,3,4,5,6,7,8,9,…..,196,197,198,199 CMD
> Later, I will run a command to communicate with 1) with a command like:
> 2) orted -mca ess env -mca orte_ess_ -mca orte_ess_vpid 100 -mca orte_ess_num_procs 200 --hnp-uri "job#;tcp:/ /:port#"
> The problem I have is I can only run with about 100 nodes. If the number is higher, 1) will not invoke CMD and the total number of processes is about 130 or so.
> My question is how to remove that limit?
> Thanks in advance.
> Jianzhang
> _______________________________________________
> users mailing list
> users_at_[hidden]