[Beowulf] [EXTERNAL] Re: Deskside clusters
pbisbal at pppl.gov
Mon Sep 20 20:58:49 UTC 2021
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.
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