[osg-users] ssh and osgdem

J.P. Delport jpdelport at csir.co.za
Thu Jul 10 05:54:44 PDT 2008


Hi,

yes, the slaves all have NVidia cards in them. X is running on them.

What I don't understand is how osgdem (running via ssh on a remote node) 
will know to use the local (to itself) X server? Must I set up a special 
X server on the slaves?

jp

Robert Osfield wrote:
> Hi JP,
> 
> osgdem requires a graphics context to enable it to do OpenGL texture
> compression.
> 
> Do your slaves have a OpenGL support?
> 
> Robert.
> 
> On Thu, Jul 10, 2008 at 12:53 PM, J.P. Delport <jpdelport at csir.co.za> wrote:
>> Hi,
>>
>> I've set up a cluster to test out vpb. I've created a machine pool file and
>> I can now see that the master node executes e.g.:
>>
>> ssh node01 "osgdem --run-path /home/jpd/terrain -s build_master.source
>> --record-subtile-on-leaf-tiles -l 1 --task tasks/build_root_L0_X0_Y0.task
>> --log logs/build_root_L0_X0_Y0.log"
>>
>> (The node has access to the data, passwordless ssh works ...)
>>
>> The tasks fail, so I logged into the remote node using ssh (with and without
>> -X) and ran the command manually.
>>
>> I get:
>> No protocol specified
>> Error: Unable to open display ":0.0".
>>
>> in both cases.
>>
>> I assume this is because osgdem wants to create a graphics context.
>>
>> Will osgdem run with X11 forwarding? If not, how does one start a remote
>> process so that it has access to the X server on the node which it is
>> running?
>>
>> thanks
>> jp
>>
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