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Re: Embarrassingly Parallel Tasks on HPC

From: Matt Oates (Home)
Subject: Re: Embarrassingly Parallel Tasks on HPC
Date: Wed, 29 Aug 2012 18:40:31 +0100

Hi Erik,

Welcome to the list.

On 29 August 2012 18:10, Erik Petigura <> wrote:
> Now, I'm trying to migrate this code to a larger computer ("carver" at
> NERSC).  The command no longer works because carver requires a password for
> each ssh connection to a child node.

Is there a reason you can't just setup passwordless logins using keys?

If all the nodes on "carver" have a shared home where you login to you
only have to do ssh-copy-id once and then you no longer need to use

On the computer you want to launch a job from you can do:

ssh-keygen -t rsa

This will hopefully create some key files: ~/.ssh/id_rsa and ~/.ssh/

Then do something like:

ssh-copy-id -i ~/.ssh/

>From the help pages of Carver online it very much looks like they
demand you use their PBS queue submission tools just as a matter of
billing though!


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