[Beowulf] [EXTERNAL] Re: Deskside clusters

Prentice Bisbal 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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