[Info-vax] rx2800i2 sales/support window changes

[Jan-Erik Soderholm]

JF Mezei wrote 2014-02-17 21:09:
> On 14-02-17 12:28, Shael Richmond wrote:
>
>> I finally got an answer from Stromasys that said an emulated DS25 would be slower than the actual DS25.  However I could have it emulate two cores to get better performance at the cost of buying additional VMS licenses.
>
>
> Does this imply that the emulator makes limited use of multi core x86 to
> emulate a single core Alpha ?
>
> Does the emulator use 2 x86 cores ? One for the translator and one to
> run the translated code ?
>

The answer seems to be available here:
www.stromasys.com/products/charon-axp/charon-axpds20-for-windows/


> Obviously, an Alpha app designed to run on a single CPU won't benefit
> from additional VMS instances. But if you have an app that can spread
> the load between multiple CPUs,...

That is a very unusual "app". You would probaly find that in
environments that probably never would think of emulation anyway.

Most normal system has a large amount of normal, single threaded
processes that doesn't (per process) run on multiple CPUs.

If with an "app" you are talking about a whole system with all
running processes, then yes, that will of probably run better on
multiple CPU's, emulated or real.


> then having the emulator emulate more
> than 1 core would make a big difference,...

Sure, given the extra VMS licens to support it.
No difference from real hardware there.

> especially if you would
> otherwise have 2 x86 core stay idle.
>
>