POV-Ray : Newsgroups : povray.general : Algorithm question : Re: Algorithm question Server Time
1 Jun 2024 14:22:34 EDT (-0400)
  Re: Algorithm question  
From: Anthony D  Baye
Date: 10 Sep 2015 12:40:01
Message: <web.55f1b144db4c28502aaea5cb0@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 10.09.2015 um 05:37 schrieb Anthony D. Baye:
> > does anybody know --approximately-- how much of the ray tracing process is
> > strictly serial (as a percentage)?
>
> What do you mean by "serial" in this context?

as in: Not parallel.

What percentage of the operation is carried out in a strictly sequential way,
with no parallel processing of any kind.

I want to calculate the theoretical speed increase per core/thread according to
Amdahl's Law, but I need to know what percentage of the operation is performed
serially.

S(N) = 1 / [ Ps + (1/n)Pp] => 1 / [Ps + (1/n)(1 - Ps)]

where N is the number of cores and Ps is the percentage of the operation that is
strictly serial.

Regards,
A.D.B.


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