[Beowulf] [EXTERNAL] Re: Deskside clusters
John Hearns
hearnsj at gmail.com
Tue Sep 21 07:05:30 UTC 2021
Yes, but which foot? You have enough space for two toes from each foot for
q taste, and you then need some logic to decide which one to use.
On Mon, 20 Sept 2021 at 21:59, Prentice Bisbal via Beowulf <
beowulf at beowulf.org> wrote:
> On 9/20/21 6:35 AM, Jim Cownie wrote:
>
> >> Eadline's Law : Cache is only good the second time.
> >
> > Hmm, that’s why they have all those clever pre-fetchers which try to
> > guess your memory access patterns and predict what's going to be
> > needed next.
> > (Your choice whether you read “clever” in a cynical voice or not :-))
> > *IF* that works, then the cache is useful the first time.
> > If not, then they can mess things up royally by evicting stuff that
> > you did want there.
> >
>
> I thought about prefetching, but deliberately left it out of my original
> response because I didn't want to open that can of worms... or put my
> foot in my mouth.
>
> Prentice
>
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