On Mar 7, 2006, at 12:29 AM, genie lfs wrote:
> i am using oscar cluster with three nodes and one master
> configuration..
> the cluster is properly installed.. and i am having problems running
> lam.mpi on it..
>
> i am using a bash shell... when i try to lamboot , it asks for a
> password to boot into the host..
> though the node is in the known_hosts file...
>
> can anyone please guide me the enviornment changes i have to perform
> on my master node(all the prerequisites like the ssh
> configuration,shell configuration) so that i can run a program on it..
>
> i have changed the file permissions of the $home/.ssh/known_hosts and
> all the necessary files and did what all is understood by me..
OSCAR really should have setup your ssh keys for you, but it doesn't
sound like it did. We have an FAQ item on our web page dealing with
setting up ssh keys for passwordless authentication -- you might want
to start with that:
http://www.lam-mpi.org/faq/category4.php3#question15
You need to be able to ssh into the nodes in the hostfile you pass to
lamboot. Until that condition is met, you won't be able to use LAM/
MPI. I'd start with the OSCAR group, however, since it sounds like
something in your account setup didn't occur correctly.
Hope this helps,
Brian
--
Brian Barrett
LAM/MPI developer and all around nice guy
Have a LAM/MPI day: http://www.lam-mpi.org/
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