[Beowulf] Re: scyld and jaguar
mwill at penguincomputing.com
Mon Mar 22 17:01:31 EST 2004
The problem is that a statically linked executable will not be able to use the
Scyld infrastructure. It won't take advantage of your Infinidband or
Myrinet, it won't use bproc, etcpp.
You might set up the compute nodes to look like general unix nodes in order to
run that particular implementation, but then you loose all the advantages of
> I also worked on Alan's suggestion and created a
> dynamic link between the ssh and rsh.
AFAIK you would be better off to set the enviroment variable to force it to
use rsh or ssh. I think its P4_RSHCOMMAND="ssh" .
The best way would be to ask your vendor to provide you with a dymanically
linked executable, or even the source code and compile it yourself.
> I am now stuck
> in making ssh passwordless. Using 'ssh-keygen -t' I
> generated public and private keys and then copied
> public key to the authorised_keys2 in ~/.ssh/. I am
> not sure if thats all I need to make ssh passwordless.
Does it work with localhost? It sometimes is tricky to get it right.
then it could also work remotely, given that you
1) have sshd running
2) have your home NFS mounted
3) have made /dev/random accessible, at least for ssh I believe thats
> I was wondering if I will have to copy public keys on
> each node using bpcp command.
You could do that too if you do not want to NFS mount the home.
That you could easily do by editing /etc/exports to export /home
and /etc/beowulf/fstab to mount $MASTER, after that rebooting your compute
node. (might be possible without rebooting, but I don't know off of the top
of my head)
Michael Will, Linux Sales Engineer
NEWS: We have moved to a larger iceberg :-)
NEWS: 300 California St., San Francisco, CA.
Tel: 415-954-2822 Toll Free: 888-PENGUIN
Beowulf mailing list, Beowulf at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
More information about the Beowulf