[Zope] Re: Intel vs AMD

[Myroslav Opyr]

Hi, Guido!

I've found you as translator of pystones.py test into Python (from C). 
Can you give explanation of the below fact of running several parralel 
pystones.py processes and not affecting results. Is pure processing time 
calculated?

Thank you,

m.
--
Myroslav Opyr
zope.net.ua * Ukrainian Zope Hosting
e-mail: myroslav@zope.net.ua

Marius Gedminas wrote:
> On Tue, Dec 10, 2002 at 09:44:18PM +0200, Myroslav Opyr wrote:
> [ This was about a Dual-CPU Xeon, IIRC ]
> 
>>>and running two pystones at once:
>>>
>>>[bkc@strader ~/Zope]$ Zope-2.6.0-linux2-x86/bin/python Zope-2.6.0-linux2-x86/lib/python2.1/test/pystone.py & ; Zope-2.6.0-linux2-x86/bin/python Zope-2.6.0-linux2-x86/lib/python2.1/test/pystone.py
>>>[1] 500
>>>Pystone(1.1) time for 100000 passes = 5.01
>>>This machine benchmarks at 19960.1 pystones/second
>>>Pystone(1.1) time for 100000 passes = 5.02
>>>This machine benchmarks at 19920.3 pystones/second
>>>[bkc@strader ~/Zope]$
>>
>>Effectively doubling perfomance...
> 
> 
> This is a *single* CPU Athlon (XP 1800+, 1.5 GHz)
> 
> $ python /usr/lib/python2.2/test/pystone.py
> Pystone(1.1) time for 10000 passes = 0.53
> This machine benchmarks at 18867.9 pystones/second
> 
> $ python /usr/lib/python2.2/test/pystone.py &\
>   python /usr/lib/python2.2/test/pystone.py &\
>   python /usr/lib/python2.2/test/pystone.py &
>   python /usr/lib/python2.2/test/pystone.py
> [1] 23242
> [2] 23243
> [3] 23244
> Pystone(1.1) time for 10000 passes = 0.52
> This machine benchmarks at 19230.8 pystones/second
> Pystone(1.1) time for 10000 passes = 0.53
> Pystone(1.1) time for 10000 passes = 0.53
> This machine benchmarks at 18867.9 pystones/second
> This machine benchmarks at 18867.9 pystones/second
> Pystone(1.1) time for 10000 passes = 0.54
> This machine benchmarks at 18518.5 pystones/second
> 
> They all seem to run sequentially, and the numbers do not change even if
> I try to run 32 of them in parallel.
> 
> Marius Gedminas