On 6/23/06, Vinicius Santos <[EMAIL PROTECTED]> wrote:

What about the AMD way? ie. each cpu having direct access to separated
RAM banks and doing some sort of transaction making it basically a
NUMA architecture wich act externally as SMP. (I may be wrong about
that, but that's what I got from reading some specs of Athlon X2)
I'm just wondering the implications, not even suggesting as a real
implementation idea. :)

NUMA relies on different CPUs having different working sets.  In the
graphics case, the most heavily drawn-to part of memory is the same as
the most heavily-scanned-for-video.  So we can't separate video out.

We might be able to do some things like put textures and z buffer in
one place and video buffer in another.  The problem is that with X11,
pixmaps are used so heavily that they are accessed as much as the
video buffer.
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