[Info-vax] VUPS.COM relevance for modern CPUs

[abrsvc]

On Tuesday, December 20, 2022 at 9:00:35 AM UTC-5, Simon Clubley wrote:
> On 2022-12-19, Mark Daniel <mark.... at wasd.vsm.com.au> wrote: 
> > On 20/12/2022 5:40 am, Simon Clubley wrote: 
> >> That means operating systems running under it should be running at close 
> >> to native hardware performance speeds and it means you should be testing 
> >> the x86-64 performance against physical Alpha machines, not emulated ones. 
> > 
> > As a performance comparison tool, why not? 
> >
> Because I was expecting an emulated Alpha to be slower than a real Alpha 
> so the results Dan gets might not be like-for-like.
> Simon. 
> 
> -- 
> Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP 
> Walking destinations on a map are further away than they appear.
Using this test for V9.x is not the same as using it to test emulated environments.  As stated prior, the current state of compiler code generation is such that performance tests are not relevant yet.

I would expect similar performance levels to real Alpha hardware for emulated Alphas on 3.5Ghz or faster machines (except for some of the larger GS class machines).  I am aware of ES40 and ES45 class emulated machines achieving same or better performance than the real Alpha equivalents.  CPU speed on par with I/O and network performance better than real Alphas.

Dan