25 Apr
2018
25 Apr
'18
11:14 p.m.
On 2018, Apr 25, at 4:45 PM, Larry McVoy
<lm(a)mcvoy.com> wrote:
Wasn't that a Seymour Cray quote? Seems like he was also not a fan of VM.
My favorite is due to Dave Clark at MIT: “Anytime someone says ‘virtual’ you should think
‘slow’”
followed closely by “Any problem in computer science can be solved by adding a layer of
abstraction” and “Any performance problem can be solved by removing a layer of
abstraction.”
As one converted to the HPC cults, I am naturally opposed to small pages, virtual
anything, and interrupts…
-L
Our
comment was that ???It ain???t VIRTUAL memory if it isn???t all there??? as
opposed to virtual addressing.
Gene Amdahl was not a fan of paging. He said that virtual memory
merely magnifies the need for real memory.