[Paraview] client/server display problem

[Wylie, Brian]

Folks,

Just to reiterate, the servers should ALWAYS open up a window on their
local display, never should the DISPLAY variable on the servers be set
to anything other than localhost:0.

Even if you compile with Mesa (which opens a virtual window) the display
should still be set to localhost:0

Never X forward or openGL forward, if you do you are bypassing an image
delivery system capable of 20-30 frames/sec over 100T interconnect to
the client. (see http://www.nvidia.com/object/IO_27539.html and
http://www.nvidia.com/object/IO_19962.html for some blah blah PR
materials)

Sorry to repeat myself, but it seems like there might be some confusion.

  Brian Wylie - Org 9227
  Sandia National Laboratories
  MS 0822 - Building 880/A1-J
  (505)844-2238 FAX(505)845-0833                       
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> -----Original Message-----
> From: paraview-bounces+bnwylie=sandia.gov at paraview.org 
> [mailto:paraview-bounces+bnwylie=sandia.gov at paraview.org] On 
> Behalf Of Kevin H. Hobbs
> Sent: Tuesday, May 16, 2006 1:13 PM
> To: Jack Gundrum
> Cc: ParaView at paraview.org
> Subject: Re: [Paraview] client/server display problem
> 
> On Tue, 2006-05-16 at 11:32 -0400, Jack Gundrum wrote:
> > Hi Christoph,
> > 
> > So when paraview running in parallel tries to open a 
> process on other 
> > nodes it uses X forwarding? The X forwarding from my 
> cluster server to 
> > laptop client works fine if I dont run in parallel (i.e. 
> mpirun) so X 
> > forwarding is working untill I use mpirun.
> > 
> 
> What is the value of DISPLAY on the cluster frontend? If it's 
> localhost:whatever, set by ssh, this isn't likely to make 
> sense on the clients. If the display variable is set by ssh 
> to the real hostname (internal network is fine) of the 
> cluster front end then the compute nodes should be able to 
> open windows. This is an sshd option. Can you run glxgears ( 
> or xclock or whatever ) on the compute nodes?
> 
> > Should I be compiling paraview with offscreen rendering to avoid X 
> > forwarding among cluster nodes?
> > 
> 
> This made my life MUCH easier. 
> 
> I think it's even worse if you don't use offscreen rendering 
> on the cluster or provide each node with a display ( X 
> virtual frame buffer works. ). I think the compute nodes are 
> trying to use the graphics hardware on your laptop... Not 
> sure about that though.
> 
> 
>