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Geforce Graphics and OSX / Nvidia drivers


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#1 R2D2

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Posted 25 October 2016 - 07:13 AM

Hello Thea,

 

is there any recommendation from your side, or testing/effects regarding stability between the following setups:

 

- using a Geforce card that is "recognized" by OSX without using the extra "Nvidia web" drivers (i.e GTX 760/770/780 generation)

 

- using a newer generation card with the "Nvidia web" drivers ( GTX 970, 980 etc)

 

with CUDA in Thea, El Capitan 10.11.6, Macpro 5.1

 

 

Just if it makes a difference in your testing so far. (Not considering power/performance/temperature/price)

 

Thx


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#2 Justin Montoya

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Posted 25 October 2016 - 02:29 PM

As far as I know, CUDA is only supported if you are also using the Nvidia Web Drivers.  Without the web drivers, CUDA does not work, and therefore you can not use the GPU for rendering.  It's all good with the Web Drivers and updated CUDA though.  

 

Someone feel free to correct me if I am wrong.  



#3 R2D2

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Posted 26 October 2016 - 07:11 AM

I have a GTX 760 and Thea worked with CUDA and no web drivers initially, too.

After some hickups I decided to install the web drivers, but since I then also completely reinstalled FZ and Thea too, (and went from Yosemite to El Capitan), I cant tell what made it work better, as there had also been a Thea update in between.

Anyway, I am going to try a GTX 980 now, so I will need to run the Nvidia drivers - as OSX doesnt support this card.



#4 manolis

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Posted 26 October 2016 - 08:42 AM

Hi there,

 

From our side it doesn't really make any difference,  the only requirement is support for CUDA 6.5.

 

 



#5 R2D2

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Posted 02 November 2016 - 11:46 AM

I swapped the 760 for a 980 - seems to work fine in FZ, but havent really tested any further so far.

Quick comparison before/after in Thea Studio, the results from log are: 

 

 

Opening file  Support/Thea Render/Scenes/Benchmark/Presto/MeccanoPlane/MeccanoPlane.scn.thea"

Finished in 1 seconds!

Device #0: GeForce GTX 760

Building Environment... done. (0.551 seconds)

- Polys: 503556, Objects: 91, Parametric: 0

- Moving: 0, Displaced: 0, Clipped: 0

- Instances: 0, Portals: 0

- Nodes: 158062, Leaves: 158063, Cache Level: Normal

Device #1: Intel® Xeon® CPU           W3680  @ 3.33GHz

Device #0: memory 149/1168/2047 Mb

Device #1: memory 155/?/24576 Mb

Device #0: 258x4 s/p

Device #1: 254x4 s/p

Finished in 4 minutes and 30 seconds!

 

 

Opening file  Support/Thea Render/Scenes/Benchmark/Presto/MeccanoPlane/MeccanoPlane.scn.thea"

Finished in 0 seconds!

Device #0: GeForce GTX 980

Building Environment... done. (0.547 seconds)

- Polys: 503556, Objects: 91, Parametric: 0

- Moving: 0, Displaced: 0, Clipped: 0

- Instances: 0, Portals: 0

- Nodes: 158062, Leaves: 158063, Cache Level: Normal

Device #1: Intel® Xeon® CPU           W3680  @ 3.33GHz

Device #0: memory 149/3578/4095 Mb

Device #1: memory 155/?/24576 Mb

Device #1: 178x4 s/p

Device #0: 334x4 s/p

Finished in 3 minutes and 8 seconds!

 

So it seems there is noticable improvement for overall time/render.

FZ interactive modes feels a bit snappier, too.

Manolis, is there anything else to find in those numbers ?

 



#6 manolis

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Posted 03 November 2016 - 10:41 AM

Hi R2,

 

The difference seems reasonable given the two cards.

Regarding performance, you can run our benchmark tool.

You can see existing results here.

 

Edit: Currently the latest version is available only for Windows. Here is the link for the previous one with OS X and Linux binaries.



#7 R2D2

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Posted 04 November 2016 - 08:24 AM

Tried the Benchmark tool, and it seems performance under OSX is comparable to WIN.

Interesting also that the 7year old w3680 cpu is not too far away from the E5-1650 trashcan, which costs 10times more...

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