> On 2018, Apr 25, at 4:45 PM, Larry McVoy wrote: > >>> 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. > > 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