[Info-vax] VAX 6000 on Young Sheldon

[Johnny Billquist]

On 2023-02-07 01:52, Arne Vajhøj wrote:
> On 2/6/2023 8:04 AM, Neil Rieck wrote:
>> VAX-6000 was the first time I encountered SMP (symmetric multi
>> processing) on VAX. We were running a 6430 which meant 3 CPUs
>>
>> Before that I worked for a year on a pair of VAX-8550 configured as a
>> VAXcluster
>>
>> Our VAX-6430 system felt faster than the pair of clustered VAX-8550
> 
> Based on VUPS ratings then I would expect:
> - multi job throughput to be the same
> - single job execution slower
> - interactive responsiveness better

Uh? The 64x0 single CPU VUPS rating is 7.0, while the 8550 is rated at 
6.0 VUPS, so I would expect the 6430 to be faster for individual jobs, 
as well as *way* better at handling load, since you actually have three 
CPUs compared to just one on the 8550. Clustering two 8550 would not get 
close to a 3 cpu 64x0.

   Johnny