POV-Ray : Newsgroups : povray.general : render on slow computer faster Server Time
3 Aug 2024 06:15:23 EDT (-0400)
  render on slow computer faster (Message 1 to 8 of 8)  
From: marabou
Subject: render on slow computer faster
Date: 13 May 2004 10:30:35
Message: <40a3868b@news.povray.org>
computers are funny!
one and the same Pov-code is rendered on two different systems at same
time:
on render is @500mhz other @1200mhz, no isosurfaces, no radiosity,
only CSG objects and just two light sources with 4x4 area lights.

other images are rendered much faster on bigger machine.
no guess how this could happen.
any hints from someone?

thanks in advance.


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From: ABX
Subject: Re: render on slow computer faster
Date: 13 May 2004 10:58:20
Message: <8537a0lvn048sprm1bvna341avceso98rm@4ax.com>
On Thu, 13 May 2004 16:31:31 +0200, marabou <not### [at] availablenet> wrote:
> computers are funny!

That's because they give us so much fun ;)

> one and the same Pov-code is rendered on two different systems at same
> time

Interesting.

> any hints from someone?

Hard to guess in lack of information. What version of POV? What's memory
consumption? What's rendering time?

ABX


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From: Felbrigg
Subject: Re: render on slow computer faster
Date: 13 May 2004 11:09:57
Message: <40a38fc5$1@news.povray.org>
Maybe the faster cpu has a slower Floating point calculator


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From: marabou
Subject: Re: render on slow computer faster
Date: 13 May 2004 11:20:52
Message: <40a39254@news.povray.org>
ABX wrote:

> 
>> any hints from someone?
> 
> Hard to guess in lack of information. What version of POV? What's
> memory consumption? What's rendering time?
> 
Pov 3.5
@500mhz: 170 lines - 44min - 2.2mb RAM consumption
@1.2ghz: 10 lines - 20 min - 2mb RAM consumption


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From: ABX
Subject: Re: render on slow computer faster
Date: 13 May 2004 11:31:05
Message: <1t47a0tpq12vs8j0253sd8mn4cl64abo3j@4ax.com>
On Thu, 13 May 2004 17:21:48 +0200, marabou <not### [at] availablenet> wrote:
> @500mhz: 170 lines - 44min - 2.2mb RAM consumption
> @1.2ghz: 10 lines - 20 min - 2mb RAM consumption

I don't understand this statistic. 44 min vs 20 min doesn't mean "at same
time". Does line mean row of pixels ? Then 44/170 vs. 20/10 (time per line)
also doesn't mean "at same time". Is RAM consuption quoted from final report
of rendering or just readed from task manager?

ABX


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From: marabou
Subject: Re: render on slow computer faster
Date: 13 May 2004 11:42:44
Message: <40a39773@news.povray.org>
ABX wrote:

> On Thu, 13 May 2004 17:21:48 +0200, marabou <not### [at] availablenet>
> wrote:
>> @500mhz: 170 lines - 44min - 2.2mb RAM consumption
>> @1.2ghz: 10 lines - 20 min - 2mb RAM consumption
> 
> I don't understand this statistic. 44 min vs 20 min doesn't mean "at
> same time". Does line mean row of pixels ? Then 44/170 vs. 20/10
> (time per line) also doesn't mean "at same time". Is RAM consuption
> quoted from final report of rendering or just readed from task
> manager?
>
values as they run at same time a lost. then i had to give you values
from my brain. so i give you actual datas. there is no final report
because rendering was cancelled. 
it was so courious that i wanted to find out what it could be. 
i had to clear that POVray gets constant 90% of CPU time.
indeed, RAM consumtion was read from process status report.


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From: Warp
Subject: Re: render on slow computer faster
Date: 13 May 2004 18:09:46
Message: <40a3f22a@news.povray.org>
marabou <not### [at] availablenet> wrote:
> @500mhz: 170 lines - 44min - 2.2mb RAM consumption
> @1.2ghz: 10 lines - 20 min - 2mb RAM consumption

  By the way, clockrate is not the only thing which affects the speed
of a program.

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -


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From: Thorsten Froehlich
Subject: Re: render on slow computer faster
Date: 14 May 2004 07:07:18
Message: <40a4a866@news.povray.org>
In article <40a39254@news.povray.org> , marabou <not### [at] availablenet>  wrote:

> Pov 3.5
> @500mhz: 170 lines - 44min - 2.2mb RAM consumption
> @1.2ghz: 10 lines - 20 min - 2mb RAM consumption

Well, you understand this says absolutely nothing, do you?  A render can
very well spend 99% of its time rendering the top of an image and spend just
a few seconds for the rest.  It is  not like measuring a few lines will tell
you anything useful how the render times compare.  You need to compare the
same scene with exactly the same settings and let it render from start to
finish.

    Thorsten


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