RES: [Paraview] client/server display problem

[Renato N. Elias]

Sorry, but I'm still in doubt...

Maybe my doubt is due the way I'm running the client/server mode. I should
emphasize that I'm running in a client/DATA server mode using a SGI Altix
which doesn't have any rendering capability. Thus, here goes my questions...

BRIAN: 1) Set up their server nodes so that they can open X windows (Sandia
has done this on like 10 different clusters, it's not that hard, if you need
instructions please email me).

RENATO: Why? If I'm running in a client/data server scheme my data server
only need to load and dispatch my data to the client which should launch the
PV GUI. I can't see why is it necessary to open X windows in this case.


BRIAN: 2) Compile the server with Mesa (note: the client should never be
compiled with Mesa)

RENATO: The question remains. Is it really necessary to compile PV with Mesa
support in a system without rendering capability?
 
Thanks a lot for your feedback Brian

Renato N. Elias
===============================================
PhD student - http://www.nacad.ufrj.br/~rnelias
High Performance Computing Center
Federal University of Rio de Janeiro
Rio de Janeiro, Brazil
+55(21) 2562-8080 



-----Mensagem original-----
De: paraview-bounces+rnelias=nacad.ufrj.br at paraview.org
[mailto:paraview-bounces+rnelias=nacad.ufrj.br at paraview.org] Em nome de
Wylie, Brian
Enviada em: terça-feira, 16 de maio de 2006 13:39
Para: Jack Gundrum; Christoph Moder
Cc: ParaView at paraview.org
Assunto: RE: [Paraview] client/server display problem

All,

I haven't followed the entire thread, but just wanted to mention that in
general 'forwarding X' when running ParaView client/server is a very bad
idea (performance 20x slower and bypassing all the image delivery work in
ParaView).

When running in client/server folks should do one of the following two
things:
1) Set up their server nodes so that they can open X windows (Sandia has
done this on like 10 different clusters, it's not that hard, if you need
instructions please email me).
2) Compile the server with Mesa (note: the client should never be compiled
with Mesa)

  Brian Wylie - Org 9227
  Sandia National Laboratories
  MS 0822 - Building 880/A1-J
  (505)844-2238 FAX(505)845-0833                       
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                                    Unleash the Beast
 

> -----Original Message-----
> From: paraview-bounces+bnwylie=sandia.gov at paraview.org
> [mailto:paraview-bounces+bnwylie=sandia.gov at paraview.org] On Behalf Of 
> Jack Gundrum
> Sent: Tuesday, May 16, 2006 9:32 AM
> To: Christoph Moder
> Cc: ParaView at paraview.org
> Subject: Re: [Paraview] client/server display problem
> 
> 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.
> 
> Should I be compiling paraview with offscreen rendering to avoid X 
> forwarding among cluster nodes?
> 
> 
> 
> Christoph Moder wrote:
> 
> >> I have paraview compiled with mpich using rsh instead of
> ssh, would
> >> this create a problem when running.
> >
> >
> > On many systems rsh is a link to ssh.
> >
> >> My server connects to my client and launches the splashscreen but 
> >> then hangs with "unable to open display".
> >> Everything works fine without mpirun?
> >
> >
> > Remote connections to the X server are often disabled (startx 
> > --nolisten tcp). But ssh can be told to forward all X connections; 
> > write in your ~/.ssh/config:
> > HOST *
> >   ForwardX11 yes
> >
> > Christoph
> 
> 
> _______________________________________________
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> ParaView at paraview.org
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> 
> 

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