You'll need to use ssh-keygen to make a set of RSA keys. Don't enter a password when it prompts for one; this will ensure passwordless operation. Once the keys are created, copy ~/.ssh/id_rsa.pub to ~/.ssh/authorized_keys and you should be set.
________________________________ From: users-boun...@open-mpi.org [users-boun...@open-mpi.org] on behalf of seshendra seshu [seshu...@gmail.com] Sent: Wednesday, April 25, 2012 12:38 PM To: Open MPI Users Subject: Re: [OMPI users] regarding the problem occurred while running anmpi programs 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 <jsquy...@cisco.com<mailto:jsquy...@cisco.com>> 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@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@ip-10-80-106-70 .ssh]$ ssh-add $home/master/.ssh/id_dsa > Could not open a connection to your authentication agent. > > > so how can i solve it. > > > Thanking you > > With Regards > seshendra > > On Wed, Apr 25, 2012 at 6:16 PM, Jeff Squyres > <jsquy...@cisco.com<mailto:jsquy...@cisco.com>> wrote: > I would really suggest doing a little reading in the FAQ. It talks about > setting up ssh keys, etc. > > http://www.open-mpi.org/faq/?category=rsh > > > On Apr 25, 2012, at 12:03 PM, seshendra seshu wrote: > > > Hi, > > Thanks its has worked but when i tried to run for a 2 nodes , i have got > > the following error > > > > [master@ip-10-80-106-70 ~]$ 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@ip-10-80-106-70 ~]$ > > > > > > so please help me in solving this. > > > > Thanking you. > > > > > > On Wed, Apr 25, 2012 at 5:48 PM, > > tyler.bal...@huskers.unl.edu<mailto:tyler.bal...@huskers.unl.edu> > > <tyler.bal...@huskers.unl.edu<mailto:tyler.bal...@huskers.unl.edu>> wrote: > > export LD_LIBRARY_PATH= [location of library] leave out the > > :$LD_LIBRARY_PATH > > From: users-boun...@open-mpi.org<mailto:users-boun...@open-mpi.org> > > [users-boun...@open-mpi.org<mailto:users-boun...@open-mpi.org>] on behalf > > of seshendra seshu [seshu...@gmail.com<mailto:seshu...@gmail.com>] > > Sent: Wednesday, April 25, 2012 10:43 AM > > To: Open MPI Users > > Subject: Re: [OMPI users] regarding the problem occurred while running > > anmpi programs > > > > Hi > > I have exported the library files as below > > > > [master@ip-10-80-106-70 ~]$ export > > LD_LIBRARY_PATH=/usr/local/openmpi-1.4.5/lib:$LD_LIBRARY_PATH > > [master@ip-10-80-106-70 ~]$ 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@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) > > <jsquy...@cisco.com<mailto:jsquy...@cisco.com>> wrote: > > See the FAQ item I cited. > > > > Sent from my phone. No type good. > > > > On Apr 25, 2012, at 11:24 AM, "seshendra seshu" > > <seshu...@gmail.com<mailto:seshu...@gmail.com>> wrote: > > > >> Hi > >> now i have created an used and tried to run the program but i got the > >> following error > >> > >> [master@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 > >> <jsquy...@cisco.com<mailto:jsquy...@cisco.com>> 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 > >> jsquy...@cisco.com<mailto:jsquy...@cisco.com> > >> For corporate legal information go to: > >> http://www.cisco.com/web/about/doing_business/legal/cri/ > >> > >> > >> _______________________________________________ > >> users mailing list > >> us...@open-mpi.org<mailto:us...@open-mpi.org> > >> http://www.open-mpi.org/mailman/listinfo.cgi/users > >> > >> > >> > >> -- > >> WITH REGARDS > >> M.L.N.Seshendra > >> _______________________________________________ > >> users mailing list > >> us...@open-mpi.org<mailto:us...@open-mpi.org> > >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org<mailto:us...@open-mpi.org> > > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > > > > > -- > > WITH REGARDS > > M.L.N.Seshendra > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org<mailto:us...@open-mpi.org> > > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > > > > > -- > > WITH REGARDS > > M.L.N.Seshendra > > _______________________________________________ > > users mailing list > > us...@open-mpi.org<mailto:us...@open-mpi.org> > > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > -- > Jeff Squyres > jsquy...@cisco.com<mailto:jsquy...@cisco.com> > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > users mailing list > us...@open-mpi.org<mailto:us...@open-mpi.org> > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > -- > WITH REGARDS > M.L.N.Seshendra > _______________________________________________ > users mailing list > us...@open-mpi.org<mailto:us...@open-mpi.org> > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com<mailto:jsquy...@cisco.com> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/ _______________________________________________ users mailing list us...@open-mpi.org<mailto:us...@open-mpi.org> http://www.open-mpi.org/mailman/listinfo.cgi/users -- WITH REGARDS M.L.N.Seshendra
