Arjan van de Ven <arjanv@xxxxxxxxxx> wrote: > > Of course, on through -m64 was as expected. I'm just a bit surprised > > that it didn't say mtune=k8 since it was definitely building on one ... > > which begs the question ... is GCC (and hence the entire x86_64 > > distribution) being built this way? What are the K8 performance > > implications? I've seen a few things that indicate that Nocona cores > > running K8 code look pretty bad in some areas compared to optimized > > code...however, I find nothing to indicate how nocona optimized code > > runs on the K8. > AMD cpus are very good at running just about anything you throw at it > (think about it; with their marketshare... most code out there is > optimized for intel cpus so their cpus are effectively required to deal > well with such code). The reverse unfortunatly isn't the case. AFAIU, they are talking about /64 bit/ code here. There the situation is almost exactly the other way around, isn't it? -- Dr. Horst H. von Brand User #22616 counter.li.org Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513 -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/fedora-devel-list
