[Paraview] How to set up X connection

[Berk Geveci]

When you say "do have a login screen in each of the machine", what do
you mean? Is it a graphical one or a black window with a login prompt
at the top? If you have a graphical login screen, that means you are
running X (through xdm or some other display manager). If not, you
need to enable X on those machines. This may require installing it -
or not if it is already there - and turning it on. How to do that
depends on the Linux distribution. Once that's done, you should create
a user and make Linux login to that user automatically at boot time.
You will also have to make sure that the display is accessible. This
may require using something like the xhost command. I recommend
searching on the web for more information on setting up X.

-berk

On Wed, Aug 12, 2009 at 4:06 AM, chew ping<lcp81um at msn.com> wrote:
> Dear Berk
>
> well, basically we don't have a very clear idea of how paraview deals with
> "parallel rendering".
> we could "ssh -X" to any of these machines and run "xclock" and the X
> windows does appear
> at the machine we are from.
>
> on the other hand, while trying to start a "parallel pvserver", everything
> works fine until when
> a client (paraview) connects to the "parallel pvserver", and we get a window
> alerting us about
> "parallel rendering disabled"..
>
> by following the thread in paraview mailing list, we got to know that to
> enable "parallel rendering",
> each of the machine running the "parallel pvserver" should be able to
> generate a "window" to
> do the rendering work. now in order to do that, we are suppose to have xdm
> ran on startup.
>
> that's where our question is, (because we are not very good at linux) how do
> we "startup" the xdm?
> we do have a login screen in each of the machine.
>
> tried setting the "usr/bin/env DISPLAY=localhost:0" while starting the
> "parallel pvserver", but still
> the window alert of "parallel rendering disabled" persist. (i guess it's
> because the "node 0" still can't
> open the window in each process's node.)
>
> any diagnostic test for us to try out?
>
> thanks
>
>> Date: Thu, 6 Aug 2009 09:45:39 -0400
>> Subject: Re: [Paraview] How to set up X connection
>> From: berk.geveci at kitware.com
>> To: lcp81um at msn.com
>> CC: paraview at paraview.org; kitware at kitware.com
>>
>> HI Jess,
>>
>> So X is not running on these machines at all?
>>
>> -berk
>>
>> On Wed, Aug 5, 2009 at 5:34 AM, chew ping<lcp81um at msn.com> wrote:
>> > Hi all,
>> >
>> > i'm am doing parallel rendering using 4 machines, all these machines are
>> > identical to each other (architecture, OS, processor...)
>> > All of them have graphics hardware (rendering hardware). i came across
>> > from
>> > other resources saying that i have to set up xdm on each machine. Any
>> > idea
>> > on how to do that? thanks in advanced!
>> >
>> > regards,
>> > Jess
>> >
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