| Re: Batch mode and ssh... [message #71769 is a reply to message #71768] |
Thu, 22 July 2010 05:47   |
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Dave[5]
Messages: 11
Registered: July 2010
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Junior Member |
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On Jul 22, 2:40 pm, Dave <riebe...@gmail.com> wrote:
> On Jul 22, 2:21 pm, FÖLDY Lajos <fo...@rmki.kfki.hu> wrote:
>
>> On Thu, 22 Jul 2010, Dave wrote:
>>> Ah. I'm still having trouble logging out of the remote host. I
>>> detach the screen, but logout still hangs. :/ Any ideas?
>
>> What does 'ps -flu your_user_name' show before logout?
>
>> Pressing Ctrl-C (or killing the ssh command from an other window) helps
>> sometime. Try it and then login again to check your job's status.
>
>> regards,
>> lajos
>
> As Paulo mentions, I think it has something to do with the X server.
> Ps -flu immediately before logout gives me:
>
> driebel mars 23> ps -flu driebel
> F S UID PID PPID C PRI NI ADDR SZ WCHAN STIME TTY
> TIME CMD
> 5 S driebel 26861 26857 0 75 0 - 22568 stext 07:38 ?
> 00:00:00 sshd: driebel@notty
> 0 S driebel 26862 26861 0 85 0 - 17676 rt_sig 07:38 ?
> 00:00:00 tcsh -c /usr/libexec/openssh/sftp-server
> 0 S driebel 26914 26862 0 75 0 - 14031 - 07:38 ?
> 00:00:00 /usr/libexec/openssh/sftp-server
> 1 S driebel 28872 1 0 76 0 - 6444 stext 07:55 ?
> 00:00:00 SCREEN
> 0 S driebel 28873 28872 0 75 0 - 2387 - 07:55 pts/38
> 00:00:00 -usr/bin/tcsh
> 5 S driebel 30715 30711 0 75 0 - 22735 stext 08:36 ?
> 00:00:00 sshd: driebel@pts/16
> 0 S driebel 30738 30715 0 75 0 - 17744 rt_sig 08:36 pts/16
> 00:00:00 -tcsh
> 1 S driebel 30813 1 0 76 0 - 6444 stext 08:37 ?
> 00:00:00 SCREEN
> 0 S driebel 30814 30813 0 76 0 - 2387 - 08:37 pts/41
> 00:00:00 -usr/bin/tcsh
> 0 S driebel 30862 30814 28 79 4 - 84446 643279 08:37 pts/41
> 00:00:07 /opt/rsi/idl/bin/bin.linux.x86_64/idl script_test
> 0 R driebel 30907 30738 0 76 0 - 3674 - 08:38 pts/16
> 00:00:00 ps -flu driebel
> driebel mars 24>
>
> Previously, ctrl-c has indeed unhung logout, but doing so kills the
> remote IDL script.
More info:
I am directing output to a logfile using:
nohup nice /opt/rsi/idl/bin/idl batch_script >& log &
I detach this screen, and then attempt to logout of the remote
machine. Logout hangs, and I kill it using ctrl-C. This breaks my
IDL script, and the logfile tells me why:
X connection to localhost:19.0 broken (explicit kill or server
shutdown).
So it definitely has something to do with the X server. Even if I'm
running IDL inside a screen on the remote machine, the X server is
still being run on my local laptop. I confess, this level of window
management/X servers is a little beyond my level of computer
knowledge. I don't know how to make the X server be hosted by the
remote computer.
Dave
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