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Subject: Re: [OMPI users] running open mpi on ubuntu 9.04
From: Marce (marcemb_at_[hidden])
Date: 2009-09-19 16:54:02


2009/9/18 Hodgess, Erin <HodgessE_at_[hidden]>:
> 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_at_erin-laptop:~$
> Erin M. Hodgess, PhD
> Associate Professor
> Department of Computer and Mathematical Sciences
> University of Houston - Downtown
> mailto: hodgesse_at_[hidden]
>
>
>
> -----Original Message-----
> From: users-bounces_at_[hidden] 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_at_[hidden]> 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_at_[hidden]> 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_at_[hidden]
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: users-bounces_at_[hidden] 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_at_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_at_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_at_[hidden]
>>> >
>>> >
>>> > _______________________________________________
>>> > users mailing list
>>> > users_at_[hidden]
>>> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> users mailing list
>>> users_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>>
>>
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>>
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>
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Can you type us the follow output?

> echo $LD_LIBRARY_PATH

If this command doesn´t produce any output, you must define the
environment variable:

export LD_LIBRARY_PATH=/usr/lib/openmpi/lib/

(export LD_LIBRARY_PATH=/usr/lib64/openmpi/lib/ if you have 64 bit distribution)

Saludos,