Hi all,

I'm trying to add EC2 instances into my local cluster with openMPI. So far openMPI works well on the local cluster, and I have set up passwordless SSH between the local cluster and the Amazon EC2 instance.

Howver, when I add the public DNS into a file (defaulthostfiletest)

comp1 slots=2 max-slots=8

comp2 slots=2 max-slots=8

comp3 slots=2 max-slots=4

ec2-174-129-183-64.compute-1.amazonaws.com slots=2 max-slots=2

and then run:

[/home/ntlp/cashmoney/mainFrame]$mpirun -np 6 --hostfile defaulthostfiletest hostname

foretell

augur

predict

it works, but trying to use the amazon cluster I get:

[/home/ntlp/cashmoney/mainFrame]$mpirun -np 8 --hostfile defaulthostfiletest hostname (it hangs so I kill it)

^C^Cmpirun: killing job...

--------------------------------------------------------------------------

mpirun noticed that the job aborted, but has no info as to the process

that caused that situation.

--------------------------------------------------------------------------

mpirun was unable to cleanly terminate the daemons on the nodes shown

below. Additional manual cleanup may be required - please refer to

the "orte-clean" tool for assistance.

--------------------------------------------------------------------------

ec2-174-129-183-64.compute-1.amazonaws.com - daemon did not report back when launched

Any advice? are there any settings in /etc/sssh/sshd_config that I might need to change?

Theo

--
Theodore Van Rooy
http://greentheo.scroggles.com