[Info-vax] MicroVAX/VMS newbie, couple of questions

[Bob Eager]

On Fri, 25 Sep 2009 02:34:41 +0000, John E. Malmberg wrote:

> Jordi Guillaumes i Pons wrote:
>> En/na John E. Malmberg ha escrit:
>>>
>>> I am not sure how big of a x86 system running Linux is needed to be
>>> faster than my VAX 4000 Model 500.
>> 
>> If it can be of help, yesterday I compiled OpenSSL both in one 4000-200
>> and SIMH on a MacBookPro with an Intel 2 Duo at 2.4 GHz. The
>> compilation time in the mac was about 1/3 than in the 4000/200. I don't
>> know the difference between the -200 and the -500, but perhaps you can
>> make yourself an idea.
> 
> VAX 4000 Model 200 is  5 VUPs.
> VAX 4000 Model 500 is 24 VUPs.
> 
> Do you mean SimH on the Mac is 3 times faster than your VAX?
> 
> That would put your MacBookPro SimH at 15 VUPs, and means that I would
> need a 3.8 Ghz processor to retire my VAX 4000 Model 500.
> 
> Of course the disk drives in use will also affect your compile speed.

Absolutely. I just ran a performance test on my single core Pentium 4 at 
3.2GHz, and got about 12 VUPs. Doubt if another core would make a 
significant difference, so the Macbook seems perhaps a little high.

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