POV-Ray : Newsgroups : povray.general : Media: rendering needs verry long for the last few percent : Re: Media: rendering needs verry long for the last few percent Server Time
25 May 2022 06:03:13 EDT (-0400)
  Re: Media: rendering needs verry long for the last few percent  
From: Alain Martel
Date: 6 May 2022 09:28:25
Message: <62752279$1@news.povray.org>
Le 2022-05-06 à 02:00, Thomas de Groot a écrit :
> Op 05/05/2022 om 23:05 schreef Kenneth:
>> Thorsten <tho### [at] trfde> wrote:
>>>
>>> If you want a better distribution of the computational load, you should
>>> decrease the render block size such that your object gets distributed
>>> between multiple render blocks.
>>>
>>> Thorsten
>>
>> That works very well, thanks! From my own 'naive' analysis, I had been 
>> wondering
>> if a smaller block size would help, but I never tried it. (For my 
>> tests, I
>> forgot to mention that my media object occupies about 50% of the 
>> screen space--
>> unlike the OP's small object that is probably 'enclosed' by a single 
>> render
>> block.) Your suggestion works in both cases, of course.
>>
>> A smaller render-block size has another great advantage: The scene 
>> renders
>> faster.
>> Here is my example (using scattering media):
>>
>> block size of 64 pixels: 2 mins 16 sec
>> block size of 8 pixels:  1 min 10 sec
>>
>> That's a definite improvement! And my machine's processor seems to run 
>> less hot,
>> based on the cooling-fan speed.
>>
>>
> Ha! Never thought about that 'trick'!
> 
It's highly scene dependent.
On some scenes that already render fast, it can cause the renter time to 
increase.
Then, there are cases where it don't have a significant effect.


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