There is no hosts file there originally
I put in

 cat hosts
127.0.0.1       localhost


but still get the same thing

thanks,
Erin

erin@erin-laptop:~$
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 Whit Armstrong
Sent: Fri 9/18/2009 7:36 AM
To: Open MPI Users
Subject: Re: [OMPI users] running open mpi on ubuntu 9.04

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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>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
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