Re:Path to 2 nm May Not Be Worth It
by paulmd on Wednesday August 29, 2018 @04:33AM
(#17866688)
20 MB of RAM should be enough for anybody! /s
I was reading a thing a while back on here or Reddit where someone asked about an OS that ran entirely in cache, after all in principle a modern processor has more L3 than an original Unix minicomputer.
Since many of the memory subsystems operate on the assumption that changes should be propagated to memory that you would still need to have RAM there even if you weren't really "using" it.
There was a suggestion that since the bringup code begins entirely on-processor (before initializing RAM) that you could hack the Management Engine and keep running in that mode forever.
I was reading a thing a while back on here or Reddit where someone asked about an OS that ran entirely in cache, after all in principle a modern processor has more L3 than an original Unix minicomputer.
Since many of the memory subsystems operate on the assumption that changes should be propagated to memory that you would still need to have RAM there even if you weren't really "using" it.
There was a suggestion that since the bringup code begins entirely on-processor (before initializing RAM) that you could hack the Management Engine and keep running in that mode forever.