Hi Ralph Is there an easy way i could modify the OpenMPI code so that it would use the -Y option for ssh when connecting to remote machines?
Thank You Jody On Thu, Apr 7, 2011 at 4:01 PM, jody <jody....@gmail.com> wrote: > Hi Ralph > thank you for your suggestions. After some fiddling, i found that after my > last update (gentoo) my sshd_config had been overwritten > (X11Forwarding was set to 'no'). > > After correcting that, i can now open remote terminals with 'ssh -Y' > and with 'ssh -X' > (but with '-X' is till get those xauth warnings) > > But the xterm option still doesn't work: > jody@chefli ~/share/neander $ mpirun -np 4 -host squid_0 -xterm 1,2 > printenv | grep WORLD_RANK > Warning: untrusted X11 forwarding setup failed: xauth key data not generated > Warning: No xauth data; using fake authentication data for X11 forwarding. > /usr/bin/xterm Xt error: Can't open display: localhost:11.0 > /usr/bin/xterm Xt error: Can't open display: localhost:11.0 > OMPI_COMM_WORLD_RANK=0 > [aim-squid_0:09856] [[54132,0],1]->[[54132,0],0] > mca_oob_tcp_msg_send_handler: writev failed: Bad file descriptor (9) > [sd = 8] > [aim-squid_0:09856] [[54132,0],1] routed:binomial: Connection to > lifeline [[54132,0],0] lost > > So it looks like the two processes from squid_0 can't open the display this > way, > but one of them writes the output to the console... > Surprisingly, they are trying 'localhost:11.0' whereas when i use 'ssh -Y' the > DISPLAY variable is set to 'localhost:10.0' > > So in what way would OMPI have to be adapted, so -xterm would work? > > Thank You > Jody > > On Wed, Apr 6, 2011 at 8:32 PM, Ralph Castain <r...@open-mpi.org> wrote: >> Here's a little more info - it's for Cygwin, but I don't see anything >> Cygwin-specific in the answers: >> http://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-ssh-no-x11forwarding >> >> On Apr 6, 2011, at 12:30 PM, Ralph Castain wrote: >> >> Sorry Jody - I should have read your note more carefully to see that you >> already tried -Y. :-( >> Not sure what to suggest... >> >> On Apr 6, 2011, at 12:29 PM, Ralph Castain wrote: >> >> Like I said, I'm not expert. However, a quick "google" of revealed this >> result: >> >> When trying to set up x11 forwarding over an ssh session to a remote server >> with the -X switch, I was getting an error like Warning: No xauth >> data; using fake authentication data for X11 forwarding. >> >> When doing something like: >> ssh -Xl root 10.1.1.9 to a remote server, the authentication worked, but I >> got an error message like: >> >> >> jason@badman ~/bin $ ssh -Xl root 10.1.1.9 >> Warning: untrusted X11 forwarding setup failed: xauth key data not generated >> Warning: No xauth data; using fake authentication data for X11 forwarding. >> Last login: Wed Apr 14 18:18:39 2010 from 10.1.1.5 >> [root@RHEL ~]# >> and any X programs I ran would not display on my local system.. >> >> Turns out the solution is to use the -Y switch instead. >> >> ssh -Yl root 10.1.1.9 >> >> and that worked fine. >> >> See if that works for you - if it does, we may have to modify OMPI to >> accommodate. >> >> On Apr 6, 2011, at 9:19 AM, jody wrote: >> >> Hi Ralph >> No, after the above error message mpirun has exited. >> >> But i also noticed that it is to ssh into squid_0 and open a xterm there: >> >> jody@chefli ~/share/neander $ ssh -Y squid_0 >> Last login: Wed Apr 6 17:14:02 CEST 2011 from chefli.uzh.ch on pts/0 >> jody@squid_0 ~ $ xterm >> xterm Xt error: Can't open display: >> xterm: DISPLAY is not set >> jody@squid_0 ~ $ export DISPLAY=130.60.126.74:0.0 >> jody@squid_0 ~ $ xterm >> xterm Xt error: Can't open display: 130.60.126.74:0.0 >> jody@squid_0 ~ $ export DISPLAY=chefli.uzh.ch:0.0 >> jody@squid_0 ~ $ xterm >> xterm Xt error: Can't open display: chefli.uzh.ch:0.0 >> jody@squid_0 ~ $ exit >> logout >> >> same thing with ssh -X, but here i get the same warning/error message >> as with mpirun: >> >> jody@chefli ~/share/neander $ ssh -X squid_0 >> Warning: untrusted X11 forwarding setup failed: xauth key data not >> generated >> Warning: No xauth data; using fake authentication data for X11 forwarding. >> Last login: Wed Apr 6 17:12:31 CEST 2011 from chefli.uzh.ch on ssh >> >> So perhaps the whole problem is linked to that xauth-thing. >> Do you have a suggestion how this can be solved? >> >> Thank You >> Jody >> >> On Wed, Apr 6, 2011 at 4:41 PM, Ralph Castain <r...@open-mpi.org> wrote: >> >> If I read your error messages correctly, it looks like mpirun is crashing - >> the daemon is complaining that it lost the socket connection back to mpirun, >> and hence will abort. >> >> Are you seeing mpirun still alive? >> >> >> On Apr 5, 2011, at 4:46 AM, jody wrote: >> >> Hi >> >> On my workstation and the cluster i set up OpenMPI (v 1.4.2) so that >> >> it works in "text-mode": >> >> $ mpirun -np 4 -x DISPLAY -host squid_0 printenv | grep WORLD_RANK >> >> OMPI_COMM_WORLD_RANK=0 >> >> OMPI_COMM_WORLD_RANK=1 >> >> OMPI_COMM_WORLD_RANK=2 >> >> OMPI_COMM_WORLD_RANK=3 >> >> but when i use the -xterm option to mpirun, it doesn't work >> >> $ mpirun -np 4 -x DISPLAY -host squid_0 -xterm 1,2 printenv | grep >> WORLD_RANK >> >> Warning: untrusted X11 forwarding setup failed: xauth key data not >> generated >> >> Warning: No xauth data; using fake authentication data for X11 forwarding. >> >> OMPI_COMM_WORLD_RANK=0 >> >> [squid_0:05266] [[55607,0],1]->[[55607,0],0] >> >> mca_oob_tcp_msg_send_handler: writev failed: Bad file descriptor (9) >> >> [sd = 8] >> >> [squid_0:05266] [[55607,0],1] routed:binomial: Connection to >> >> lifeline [[55607,0],0] lost >> >> /usr/bin/xterm Xt error: Can't open display: chefli.uzh.ch:0.0 >> >> /usr/bin/xterm Xt error: Can't open display: chefli.uzh.ch:0.0 >> >> (strange: somebody wrote his message to the console) >> >> No matter whether i set the DISPLAY variable to the full hostname of >> >> the workstation, >> >> to the IP-Adress of the workstation or simply to ":0.0", it doesn't work >> >> But i do have xauth data (as far as i know): >> >> On the remote (squid_0): >> >> jody@squid_0 ~ $ xauth list >> >> chefli/unix:10 MIT-MAGIC-COOKIE-1 5293e179bc7b2036d87cbcdf14891d0c >> >> chefli/unix:0 MIT-MAGIC-COOKIE-1 146c7f438fab79deb8a8a7df242b6f4b >> >> chefli.uzh.ch:0 MIT-MAGIC-COOKIE-1 146c7f438fab79deb8a8a7df242b6f4b >> >> on the workstation: >> >> $ xauth list >> >> chefli/unix:10 MIT-MAGIC-COOKIE-1 5293e179bc7b2036d87cbcdf14891d0c >> >> chefli/unix:0 MIT-MAGIC-COOKIE-1 146c7f438fab79deb8a8a7df242b6f4b >> >> localhost.localdomain/unix:0 MIT-MAGIC-COOKIE-1 >> >> 146c7f438fab79deb8a8a7df242b6f4b >> >> chefli.uzh.ch/unix:0 MIT-MAGIC-COOKIE-1 146c7f438fab79deb8a8a7df242b6f4b >> >> In sshd_config on the workstation i have 'X11Forwarding yes' >> >> I have also done >> >> xhost + squid_0 >> >> on the workstation. >> >> >> How can i get the -xterm option running? >> >> Thank You >> >> Jody >> >> _______________________________________________ >> >> users mailing list >> >> us...@open-mpi.org >> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> >> _______________________________________________ >> >> users mailing list >> >> us...@open-mpi.org >> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >
