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 >> >
