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Old 08-13-06, 09:02 AM   #25
JaXXoN
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Location: Munich
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Default Re: Winds of freedom for graphic drivers!!!

Quote:
Originally Posted by Henning Rogge
Does someone know why this thing is THAT expensive?
Low quantity production. BTW.: the card will be available beginning
of 2007.

November, the PS3 should be available and additionally comes
with a harddisk (linux pre-installed) and an nvidia GPU. I guess it
should be possible to use DMX along with three PS3 in order to
drive three LCDs (somewhat similar to the nvidia Quadro Plex solution).

This "architecture" would use a fully open protocol (glx) and any
problems could be considered "hardware bugs" (the display driver
is just a "true" firmware in a piece of hardware). However, my
experience with glx is that it's recognizably less performant (only
tested with 100Mbit ethernet - 1Gbit ethernet might be better) and
some application may not work (i.e. UT2004). Also, i'm not sure
up to which resolution the PS3 could be programmed to (1080i
should work, but i'd prefer 1600x1200). It would be nice if the PS3
would had a high bandwidth expansion slot (like the PS2) that would
allow to add an infiniband HBA - however, i guess such a PS3 IB
HBA would be at least $800, more than the PS3 itself :-)

regards

Bernhard
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Old 08-13-06, 09:12 AM   #26
Dragoran
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Default Re: Winds of freedom for graphic drivers!!!

Cell cannot execute x86(_64) code.
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Old 08-13-06, 09:17 AM   #27
JaXXoN
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Default Re: Winds of freedom for graphic drivers!!!

Quote:
Originally Posted by Dragoran
Cell cannot execute x86(_64) code.
So?

I was talking about redirecting the display to a bunch of PS3s,
splitting the X/glx stream using DMX (http://dmx.sourceforge.net).
The machines on either side can be of different processor
architecture.

regards

Bernhard
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Old 08-13-06, 11:01 AM   #28
Henning Rogge
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Default Re: Winds of freedom for graphic drivers!!!

Quote:
Originally Posted by Dragoran
Cell cannot execute x86(_64) code.
And that prevents an X86 machine from using a cell chip as a GPU ?

Nvidia GPUs and ATI GPUs cannot execute x86 code too, so where is the problem ?
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Old 08-13-06, 11:21 AM   #29
Dragoran
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Default Re: Winds of freedom for graphic drivers!!!

Quote:
Originally Posted by JaXXoN
So?

I was talking about redirecting the display to a bunch of PS3s,
splitting the X/glx stream using DMX (http://dmx.sourceforge.net).
The machines on either side can be of different processor
architecture.

regards

Bernhard
It sounded like you want to run ut2004 (or any game) on the ps3 and redirect the output to a PC which won't work (because the games won't run on the cell architekture)
@Henning Rogge
I was not talking about this.
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Old 08-13-06, 06:12 PM   #30
JaXXoN
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Default Re: Winds of freedom for graphic drivers!!!

Quote:
Originally Posted by Dragoran
It sounded like you want to run ut2004 (or any game) on the ps3 and redirect the output to a PC
It's the other way round :-)

The (3D) application runs on an x86 system where the DISPLAY variable
is set to a DMX proxy. The DMX proxy takes the X and GLX command
stream and splits it up into i.e. three seperate streams to feed three
remote X Servers running on the three PS3s in order to driver three
LCDs (triple head setup).

A more advanced technique would be to multiplex the display to an
arbitrary number of PS3s (again using DMX) where a single PS3 only
renders a part of whole screen and then you collect ("demultiplex")
all fragments with i.e. something like VirtualGL
(http://virtualgl.sourceforge.net) and
then display the whole frame on the PC (using an OSS 2D driver).
Means: the 3D application sends it's data to the DMX proxy. The
DMX proxy splits the data to i.e. 16 PS3s. Each PS3 renders a 1/16th
of the whole frame. On each PS3, a virtualGL server sends the
rendered fragement back to the PC. On the PC, the fragements
are collected by a single virtualGL client and displayed on one or
more LCDs. Unfortnualty, at the moment, a VGL client can only
display frames from one VGL server, but it should be fairly simple
to overcome this limitation. Also, a "standard" PS3 will probably not
be up to the job concerning network bandwith and implementing
a high performance network would probably be way too expensive.
But i like the basic idea a lot :-)

regards

Bernhard
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