> Umh..I can see your point and I can partially
agree with it, but it's unlikely that G8x's instructions words are as long as
Sure. I didn’t say
they are. I’m just nitpicking on the meaning of VLIW.
[mailto:email@example.com] On Behalf Of Marco Salvi
Sent: Thursday, February 14, 2008
Subject: Re: [Algorithms] Dummie
Matrix math questions
Umh..I can see your point
and I can partially agree with it, but it's unlikely that G8x's instructions
words are as long as R6xx.
I don't see why G8x couldn't efficiently work using far less instruction
bandwidth than R6xx, even taking in consideration
the fact that G8x's ALUs are kind of 'double pumped'.
Terminology aside, I wouldn't be surprised if next architectures from AMD will
be more similar to G8x than vice versa,
as it makes compilers job so much easier.
On Wed, Feb 13, 2008 at 9:45 AM, Emil Persson <firstname.lastname@example.org> wrote:
Well, the shader cores are not vectors but scalar
units, so calling it a scalar architecture makes perfect sense. Although VLIW
would also be a valid description of it, if you prefer that. Personally I'm no
big fan of the "VLIW" nomenclature since I suppose it's rather
subjective at which point an instruction word becomes "very long" and
it says little about the flexibility of the underlying hardware. I wouldn't be
surprised if the G80's instruction words are "very long" too.