Re: Intel vs AMD x86-64

Dave Jones
2004-02-24T17:37:01Z

On Tue, Feb 24, 2004 at 10:11:22AM -0500, Albert Cahalan wrote:

> > so this isn't possible. The amd64 GART driver goes to great
> > lengths to make sure it does update the northbridges on every
> > CPU whenever something changes.
>
> Of course. That's the easy way; you won't need
> to worry about memory interleave or out-of-bounds
> prefetch if you keep everything coherent.
>
> I'm just saying it would be neat, and potentially
> useful, to intentionally violate this. Of greatest
> interest would be the 2-way Opteron boards that
> only have RAM connected to the CPU closest to PCI.
> The sidecar CPU :-) could be ignored.

Why on earth would you want to do that ?
It wouldn't buy you anything at all other than a world of pain.

Dave