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From: dick balaska
Subject: Re: which CPU, Re: Question: Aborting Pre-Trace: Possible toContinue?
Date: 13 Feb 2016 03:53:09
Message: <56beeef5$1@news.povray.org>
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On 2/13/2016 2:33 AM, Theogott wrote:
> Here is an actual CPU-Test ...
>
>
http://www.pcgameshardware.de/CPU-Hardware-154106/Tests/CPU-Test-Benchmark-AMD-Intel-675663/
I don't know...
An 8 core 5960K is only 21% faster than my 4 core 4770K? That doesn't
seem right.
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From: Stephen
Subject: Re: which CPU, Re: Question: Aborting Pre-Trace: Possible toContinue?
Date: 13 Feb 2016 04:29:42
Message: <56bef786$1@news.povray.org>
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On 2/13/2016 8:53 AM, dick balaska wrote:
> On 2/13/2016 2:33 AM, Theogott wrote:
>> Here is an actual CPU-Test ...
>>
>>
http://www.pcgameshardware.de/CPU-Hardware-154106/Tests/CPU-Test-Benchmark-AMD-Intel-675663/
>>
>
> I don't know...
> An 8 core 5960K is only 21% faster than my 4 core 4770K? That doesn't
> seem right.
>
>
I find that in my scenes changing the Render_Block_Size to about 8*,
allowing blocks to be released faster, generally speeds up the render. I
imagine most testing use the default settings.
*
YMMV
--
Regards
Stephen
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From: clipka
Subject: Re: which CPU, Re: Question: Aborting Pre-Trace: Possible toContinue?
Date: 13 Feb 2016 20:25:11
Message: <56bfd777$1@news.povray.org>
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Am 13.02.2016 um 09:53 schrieb dick balaska:
> On 2/13/2016 2:33 AM, Theogott wrote:
>> Here is an actual CPU-Test ...
>>
>>
http://www.pcgameshardware.de/CPU-Hardware-154106/Tests/CPU-Test-Benchmark-AMD-Intel-675663/
>>
>
> I don't know...
> An 8 core 5960K is only 21% faster than my 4 core 4770K? That doesn't
> seem right.
Number of cores isn't the only thing affecting performance. There's also
CPU clock, main memory bandwidth, cache layout and size, instruction
set, and so forth.
Most notably however, the benchmark score reflects a blend of real-life
scenarios; Most pieces of software may not even be prepared to
distribute their workload across 16 threads at all, and others may scale
poorly with the number of available cores due to a non-linear increase
in inter-thread communication overhead.
POV-Ray is a pretty exceptional piece of software, in that it requires
virtually no inter-thread communication (radiosity pretrace being a
notable exception).
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