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 >
