yes, I had this issue before (we are on 9.04 as well).

it has to do with the hosts file.

Erin, can you send your hosts file?

I think you want to make this the first line of your host file:
127.0.0.1       localhost

Which Ubuntu, if memory serves defaults to the name of the machine instead of localhost.

-Whit


On Fri, Sep 18, 2009 at 8:31 AM, Ralph Castain <rhc@open-mpi.org> wrote:
It doesn't matter - 1.3 isn't going to launch another daemon on the local node.

The problem here is that OMPI isn't recognizing your local host as being "local" - i.e., it thinks that the host mpirun is executing on is somehow not the the local host. This has come up before with ubuntu - you might search the user mailing list for "ubuntu" to see earlier threads on this issue.

I forget the final solution, but those earlier threads will explain what needs to be done. I'm afraid this is something quite specific to ubuntu.


On Sep 18, 2009, at 6:23 AM, Whit Armstrong wrote:

can you "ssh localhost" without a password?

-Whit


On Thu, Sep 17, 2009 at 11:50 PM, Hodgess, Erin <HodgessE@uhd.edu> wrote:

It's 1.3, please.

Thanks,


Erin


Erin M. Hodgess, PhD
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: hodgesse@uhd.edu



-----Original Message-----
From: users-bounces@open-mpi.org on behalf of Ralph Castain
Sent: Thu 9/17/2009 10:39 PM
To: Open MPI Users
Subject: Re: [OMPI users] running open mpi on ubuntu 9.04

I gather you must be running a version of the old 1.2 series? Or are 
you running 1.3?

It does make a difference as to the nature of the problem, and the 
recommended solution.

Thanks
Ralph

On Sep 17, 2009, at 8:51 PM, Hodgess, Erin wrote:

> Dear Open MPI people:
>
> I'm trying to run a simple "hello world" program on Ubuntu 9.04
>
> It's on a dual core laptop; no other machines.
>
> Here is the output:
> erin@erin-laptop:~$ mpirun -np 2 a.out
> ssh: connect to host erin-laptop port 22: Connection refused
> --------------------------------------------------------------------------
> A daemon (pid 11854) died unexpectedly with status 255 while 
> attempting
> to launch so we are aborting.
>
> There may be more information reported by the environment (see above).
>
> This may be because the daemon was unable to find all the needed 
> shared
> libraries on the remote node. You may set your LD_LIBRARY_PATH to 
> have the
> location of the shared libraries on the remote nodes and this will
> automatically be forwarded to the remote nodes.
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> mpirun noticed that the job aborted, but has no info as to the process
> that caused that situation.
> --------------------------------------------------------------------------
> mpirun: clean termination accomplished
>
> erin@erin-laptop:~$
>
> Any help would be much appreciated.
>
> Sincerely,
> Erin
>
>
> Erin M. Hodgess, PhD
> Associate Professor
> Department of Computer and Mathematical Sciences
> University of Houston - Downtown
> mailto: hodgesse@uhd.edu
>
>
> _______________________________________________
> users mailing list
> users@open-mpi.org
> http://www.open-mpi.org/mailman/listinfo.cgi/users




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