Re: Dual core performance estimate

["Aron Ahmadia" <aja2111@xxxxxxxxxxxx>]

Hi Ben,

You're asking a question that is very specific to the program you're
running.  I think the general consensus on this list has been that for
the more common uses of PETSc, getting dual-cores will not speed up
your performance as much as dual-processors.  For OS X, dual-cores are
pretty much the baseline now, so I wouldn't worry too much about it.

~A

On Nov 18, 2007 3:34 PM, Ben Tay <zonexo@xxxxxxxxx> wrote:
> Hi,
>
> someone was talking abt core 2 duo performance on os x in some previous
> email. it seems that due to memory issues, it's not possible to get 2x the
> performance. there's also some mention of amd vs intel dual core.
>
> for computation using PETSc, is there any reason to buy one instead of the
> other? Also, supposed I use winxp + mpich2 + PETSc on a dual core, what sort
> of performance increase can we expect as compared to PETSc + nompi on the
> same machine?
>
> or is that too difficult an answer to give since there are too many factors?
>
> thank you
>
> regards