Author Topic: GHZ/HR counter in VFB?  (Read 3088 times)

2016-06-08, 22:49:10

mferster

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I'm not sure if this is possible or not and is pretty niche.... but is there anyway for the frame buffer stats section  to display a real-time calculation of GHZ/hrs during a render?

Not really all that important, but it would be convenient in estimating render farm costs.


2016-06-09, 00:54:37
Reply #1

FrostKiwi

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I'm not sure if this is possible or not and is pretty niche.... but is there anyway for the frame buffer stats section  to display a real-time calculation of GHZ/hrs during a render?

Not really all that important, but it would be convenient in estimating render farm costs.
Definetly no.
GHZ per hour is a measurement of how much calculation power compares to a Pentium 4 calculating for one hour straight.

Let's say it is a really useful and well grounded measurement, then it would be static for one CPU, there is nothing to calculate in realtime, it is a theoretical value, that doesnt change.

Besides that it is bogus, it cannot take into account CPU architectural differences. A CPU without AVX would be slower than a CPU with in a Software coded to multiply Vectors using the AVX insteuction set, even if the FLOPS and GHZ per hour were identical.
Also GHZ per hour implies that a 4 core CPU calculates twice as fast as a dual core and half as slow as an octa core, which is not the case, as there is caching, resource distribution etc. going on.

Instead use Cinebench Numbers to compare. This is a real good indicator, that is being used to estimate rendering power. Some render farms like rebusfarm already have it implemented in their calculator.

edit: although not quite the same it is equally useless as some renderfarms advertising "we have 250 xeons and thus we have 45.000ghz of rendering power!!!!1!!1" I mean cmon
« Last Edit: 2016-06-09, 01:00:20 by SairesArt »
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2016-06-09, 15:32:30
Reply #2

maru

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edit: although not quite the same it is equally useless as some renderfarms advertising "we have 250 xeons and thus we have 45.000ghz of rendering power!!!!1!!1" I mean cmon
In some places you can find announcements like "quad core i7 (4 x 2,2GHz = 8,8GHz!!!)". Usually on internet auctions.

Rays/s is a good indication of performance in Corona.

We also have this: https://corona-renderer.com/benchmark/
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2016-06-09, 15:39:00
Reply #3

Juraj

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I only compare using Cinebench R15.
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2016-06-10, 14:19:32
Reply #4

Ondra

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In some places you can find announcements like "quad core i7 (4 x 2,2GHz = 8,8GHz!!!)". Usually on internet auctions.

Reminds me of a joke: Project manager is a person who thinks that 9 women would be able to birth a child in 1 month ;)
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