Re: Remote Rendering

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Shankar N Swamy (shankar.n.swamy++at++boeing.com)
Tue, 18 May 1999 12:44:51 -0700

If your graphics machine is an Octane, you are probably better served
by replacing your display machine by another Octane and running the
application locally (see points #1, and #2 below). This is a more
interesting issue, if you are running on an IR, with display set to an
OCtane, and the link is a dedicated ATM!

Meanwhile, following points are worth noting:

1. You will need a graphics capable X-server at the other end. OpenGL
    (or GLX, if you like), won't be able to redner to a minimal x-term
    at the other end. You need a COMPATIBLE version of GLX installed
    on the server machine - essentially another reasonable SGI machine.

2. If the machine that is "hosting" the graphics application has more
    texture memory than the X-server, you will increase the load on the
    machine hosting the graphics program, and in the extreme, the program
    may even not run or may crash. Given your texture size, I guess the
    texture memory on the display side will be the bottleneck for you.
    (If not, then the display machine itself is probably capable of running
    the program locally!)

3. If you overcome these restrictions, then you will have your bottleneck
    in the T1 link. You might then think of a dedicated ATM :-)

Kevin Kronmiller wrote:
>
> We have a Performer application running 1280x1024 on an Octane currently at Irix 6.4. The application uses a terrain database with over 10Mb texture. Our customer has asked us to replicate the display at a remote site over a T1 link (1.5Mbps) at a reduced frame rate. They would like 10 fps if possible. I can think of several ways to do this although the T1 link seems to be a severe limit.
>
> 1 - Pipe the RGB output from the monitor to the remote site.
> 2 - Use X/ GLX to do the remote rendering.
> 3 - Send the application data over the network and run a subset of the application locally.
>
> Any suggestions or pointers are greatly appreciated.
>
> Thanks for your time
> Kevin Kronmiller
>
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