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Subject: Re: [OMPI users] regarding the problem occurred while running anmpi programs
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2012-04-25 14:47:29


Did you read the FAQ links that I sent? It talks about setting up SSH keys. Also try this link:

    http://bit.ly/JQd6cF

(sidenote: I am very willing to help people, especially those who are new to the field, who are willing to help themselves. But my patience grows a little thin when I repeatedly send information that is ignored :-) )

On Apr 25, 2012, at 1:38 PM, seshendra seshu wrote:

> Hi,
> I have tried so much for correcting that ssh error but unable solve it. but when i tried connecting to client nodes through ssh <node ip address> in root user iam iam successful but when i have created an new user iam unable to connect. so please any help in solving this. As iam nearing to deadline.
>
>
> Thanking you,
>
>
> With Regards
> Seshendra
>
> On Wed, Apr 25, 2012 at 7:06 PM, Jeff Squyres <jsquyres_at_[hidden]> wrote:
> To get you running, just setup ssh keys that have empty passphrases. Then you don't need ssh-agent.
>
> To setup ssh keys that have non-empty passphrases and get ssh-agent working properly, google around for ssh tutorials (there are many fine ones available) -- that's a bit out of scope for this list.
>
>
>
> On Apr 25, 2012, at 12:47 PM, seshendra seshu wrote:
>
> > Hi,
> > I have read the FAQ for ssh and followed it but i have got the following error
> >
> > [master_at_ip-10-80-106-70 .ssh]$ eval 'ssh-agent'
> > SSH_AUTH_SOCK=/tmp/ssh-MOnArn9942/agent.9942; export SSH_AUTH_SOCK;
> > SSH_AGENT_PID=9943; export SSH_AGENT_PID;
> > echo Agent pid 9943;
> > [master_at_ip-10-80-106-70 .ssh]$ ssh-add $home/master/.ssh/id_dsa
> > Could not open a connection to your authentication agent.
> >
> >
> > so how can i solve it.
> >
> >
> > Thanking you
> >
> > With Regards
> > seshendra
> >
> > On Wed, Apr 25, 2012 at 6:16 PM, Jeff Squyres <jsquyres_at_[hidden]> wrote:
> > I would really suggest doing a little reading in the FAQ. It talks about setting up ssh keys, etc.
> >
> > http://www.open-mpi.org/faq/?category=rsh
> >
> >
> > On Apr 25, 2012, at 12:03 PM, seshendra seshu wrote:
> >
> > > Hi,
> > > Thanks its has worked but when i tried to run for a 2 nodes , i have got the following error
> > >
> > > [master_at_ip-10-80-106-70 ~]$ mpirun -n 2 --hostfile hostfile out
> > > Permission denied (publickey,gssapi-with-mic).
> > > --------------------------------------------------------------------------
> > > A daemon (pid 9923) 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
> > >
> > > [master_at_ip-10-80-106-70 ~]$
> > >
> > >
> > > so please help me in solving this.
> > >
> > > Thanking you.
> > >
> > >
> > > On Wed, Apr 25, 2012 at 5:48 PM, tyler.balson_at_[hidden] <tyler.balson_at_[hidden]> wrote:
> > > export LD_LIBRARY_PATH= [location of library] leave out the :$LD_LIBRARY_PATH
> > > From: users-bounces_at_[hidden] [users-bounces_at_[hidden]] on behalf of seshendra seshu [seshu199_at_[hidden]]
> > > Sent: Wednesday, April 25, 2012 10:43 AM
> > > To: Open MPI Users
> > > Subject: Re: [OMPI users] regarding the problem occurred while running anmpi programs
> > >
> > > Hi
> > > I have exported the library files as below
> > >
> > > [master_at_ip-10-80-106-70 ~]$ export LD_LIBRARY_PATH=/usr/local/openmpi-1.4.5/lib:$LD_LIBRARY_PATH
> > > [master_at_ip-10-80-106-70 ~]$ mpirun --prefix /usr/local/openmpi-1.4.5 -n 1 --hostfile hostfile out
> > > out: error while loading shared libraries: libmpi_cxx.so.0: cannot open shared object file: No such file or directory
> > > [master_at_ip-10-80-106-70 ~]$ mpirun --prefix /usr/local/lib/ -n 1 --hostfile hostfile out
> > > out: error while loading shared libraries: libmpi_cxx.so.0: cannot open shared object file: No such file or directory
> > >
> > > But still iam getting the same error.
> > >
> > >
> > >
> > >
> > >
> > > On Wed, Apr 25, 2012 at 5:36 PM, Jeff Squyres (jsquyres) <jsquyres_at_[hidden]> wrote:
> > > See the FAQ item I cited.
> > >
> > > Sent from my phone. No type good.
> > >
> > > On Apr 25, 2012, at 11:24 AM, "seshendra seshu" <seshu199_at_[hidden]> wrote:
> > >
> > >> Hi
> > >> now i have created an used and tried to run the program but i got the following error
> > >>
> > >> [master_at_ip-10-80-106-70 ~]$ mpirun -n 1 --hostfile hostfile out
> > >> out: error while loading shared libraries: libmpi_cxx.so.0: cannot open shared object file: No such file or directory
> > >>
> > >>
> > >> thanking you
> > >>
> > >>
> > >>
> > >> On Wed, Apr 25, 2012 at 5:12 PM, Jeff Squyres <jsquyres_at_[hidden]> wrote:
> > >> On Apr 25, 2012, at 11:06 AM, seshendra seshu wrote:
> > >>
> > >> > so should i need to create an user and run the mpi program. or how can i run in cluster
> > >>
> > >> It is a "best practice" to not run real applications as root (e.g., MPI applications). Create a non-privlidged user to run your applications.
> > >>
> > >> Then be sure to set your LD_LIBRARY_PATH if you installed Open MPI into a non-system-default location. See this FAQ item:
> > >>
> > >> http://www.open-mpi.org/faq/?category=running#adding-ompi-to-path
> > >>
> > >> --
> > >> Jeff Squyres
> > >> jsquyres_at_[hidden]
> > >> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
> > >>
> > >>
> > >> _______________________________________________
> > >> users mailing list
> > >> users_at_[hidden]
> > >> http://www.open-mpi.org/mailman/listinfo.cgi/users
> > >>
> > >>
> > >>
> > >> --
> > >> WITH REGARDS
> > >> M.L.N.Seshendra
> > >> _______________________________________________
> > >> 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
> > >
> > >
> > >
> > > --
> > > WITH REGARDS
> > > M.L.N.Seshendra
> > >
> > > _______________________________________________
> > > users mailing list
> > > users_at_[hidden]
> > > http://www.open-mpi.org/mailman/listinfo.cgi/users
> > >
> > >
> > >
> > > --
> > > WITH REGARDS
> > > M.L.N.Seshendra
> > > _______________________________________________
> > > users mailing list
> > > users_at_[hidden]
> > > http://www.open-mpi.org/mailman/listinfo.cgi/users
> >
> >
> > --
> > Jeff Squyres
> > jsquyres_at_[hidden]
> > For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
> >
> >
> > _______________________________________________
> > users mailing list
> > users_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
> >
> >
> >
> > --
> > WITH REGARDS
> > M.L.N.Seshendra
> > _______________________________________________
> > users mailing list
> > users_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
>
> --
> WITH REGARDS
> M.L.N.Seshendra
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

-- 
Jeff Squyres
jsquyres_at_[hidden]
For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/