[Info-vax] OpenVMS I64 V8.1 "Evaluation Release"?

[Johnny Billquist]

On 2012-03-22 21.38, Nomen Nescio wrote:
> Johnny Billquist<bqt at softjar.se>  wrote:
>
> The Extended Addressability Guide for z/OS says:
>
> "While there is no practical limit to the virtual storage above the bar,
> (IBM's name for the 2G limit set by the 2 ** 31 address pre-System Z)
> practical limits exist to the real storage frames and auxiliary storage
> slots that back the area."
>
> At least from a design standpoint there doesn't appear to be any built in
> limitation. The APIs all support getting all the virtual storage you
> want. It's just until memory gets cheap enough we can actually test how well
> this works but knowing IBM, it will work up to whatever they tell you will
> work for physical storage and probably more than that.

Here we go again. Please make sure to understand the difference between 
"virtual" and "physical".

Besides, I didn't say that physical storage had an absolute limit, just 
that no current machines allow you to get even close to 64 bits physical 
address space.

You can, already today, probably just fine allocate close to 2**64 bytes 
of virtual ram. There don't have to be that much physical memory around 
for an allocation of virtual memory to succeed.

	Johnny