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Subject: Re: [OMPI users] mpirun, paths and xterm again
From: Tim Prins (tprins_at_[hidden])
Date: 2008-02-06 11:11:02


Jody,

If you want to forward X connections through ssh, you should NOT set the
DISPLAY variable. ssh will set the proper one for you.

Tim

jody wrote:
> Tim
>
> Thank you for your explanation on how OpenMPI uses ssh.
>
>
>> There is a way to force the ssh sessions to stay open. However doing so
>> will result in a bunch of excess debug output. If you add
>> "--debug-daemons" to the mpirun command line, the ssh connections should
>> stay open.
>
> Unfortunately this didn't work either:
>
> [jody]:/mnt/data1/neander:$mpirun -np 4 --debug-daemons --hostfile
> testhosts -x DISPLAY=plankton:0.0 xterm -hold -e ../MPITest
> Daemon [0,0,1] checking in as pid 19473 on host plankton.unizh.ch
> Daemon [0,0,2] checking in as pid 26531 on host nano_00
> [plankton.unizh.ch:19473] [0,0,1] orted: received launch callback
> [nano_00:26531] [0,0,2] orted: received launch callback
> xterm Xt error: Can't open display: plankton:0.0
> xterm Xt error: Can't open display: plankton:0.0
> xterm Xt error: Can't open display: plankton:0.0
> xterm Xt error: Can't open display: plankton:0.0
> [plankton.unizh.ch:19473] [0,0,1] orted_recv_pls: received message from [0,0,0]
> [plankton.unizh.ch:19473] [0,0,1] orted_recv_pls: received exit
> [nano_00:26531] [0,0,2] orted_recv_pls: received message from [0,0,0]
> [nano_00:26531] [0,0,2] orted_recv_pls: received exit
>
> If i use ":0.0" instead of "plankton:0.0", at least the local
> processes open their X-terms.
>
>
>
> Jody
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