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Subject: Re: [OMPI users] problems with the -xterm option
From: Ralph Castain (rhc_at_[hidden])
Date: 2011-04-06 10:41:43


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_at_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
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