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Subject: Re: [OMPI users] UC Permission denied, please try again.
From: Reuti (reuti_at_[hidden])
Date: 2012-08-02 12:07:09


Am 02.08.2012 um 17:57 schrieb Syed Ahsan Ali:

> Yes all the compute nodes are NFS mounted with the master node, so everthing is same, all other nodes are accessible on ssh without password.

Are you using a queuing system?

SSH could be setup to work from the master node without passphrase, but not between the nodes.

-- Reuti

> On Thu, Aug 2, 2012 at 1:09 PM, John Hearns <hearnsj_at_[hidden]> wrote:
> On 02/08/2012, Syed Ahsan Ali <ahsanshah01_at_[hidden]> wrote:
> > Yes the issue has been diagnosed. I can ssh them but they are asking for
> > passwords
>
> You need to configure 'passwordless ssh'
>
> Can we assume that your home directory is shared across all cluster nodes?
> That means when you log into a cluster node the directory which is
> your Unix 'home directory' has exactly the same files as on the
> cluster head node?
>
> Then you need to configure passwordless ssh
> Use this as a starting point:
> http://www.open-mpi.org/faq/?category=rsh#ssh-keys
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> --
> Syed Ahsan Ali Bokhari
> Electronic Engineer (EE)
>
> Research & Development Division
> Pakistan Meteorological Department H-8/4, Islamabad.
> Phone # off +92518358714
> Cell # +923155145014
>
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