4 GTX Titans, SLOW render times

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oyjay76
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Howdy Octane Peeps,

I'm trying to learn Octane at the moment and I'm running into some unexpected results. I've got four GTX Titans and I'm having trouble getting good render times. It has to be my fault, right? See the attached frame. This is a very simple interior, with barely anything inside, but it's taking 2 minutes per frame to get to 5000 samp/pix at 1280x720 and its still VERY noisy. Can someone offer some advice on how to reduce render times and noise? I'm using OctaneDaylight with a large portal in the window. I HAVE to believe that 4 Titans can do markedly better than this.

Thanks for any tips/tricks/advice/help

JJ
Attachments
test010000.png
Intel Core i7-3770 3.4 GHz
64 GB RAM
(4) GTX Titans
(3) GTX Titan Xs
3ds Max 2016

WEBSITE | http://www.renderquick.com/
FACEBOOK | https://www.facebook.com/pages/RenderQu ... 2170091984
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xxdanbrowne
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It takes me several hours to get to 5000 samples.
Octane render isn't instant!
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Karba
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oyjay76 wrote:Howdy Octane Peeps,

I'm trying to learn Octane at the moment and I'm running into some unexpected results. I've got four GTX Titans and I'm having trouble getting good render times. It has to be my fault, right? See the attached frame. This is a very simple interior, with barely anything inside, but it's taking 2 minutes per frame to get to 5000 samp/pix at 1280x720 and its still VERY noisy. Can someone offer some advice on how to reduce render times and noise? I'm using OctaneDaylight with a large portal in the window. I HAVE to believe that 4 Titans can do markedly better than this.

Thanks for any tips/tricks/advice/help

JJ
Remove portals. You have big enough windows.
OctaneDayLight? I don't see any sun light there. Use texture environment.
Use PT if you are using PMC.
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manalokos
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Titans aren't that fast... they're slower than GTX 590 from the 80´s :lol: , they just have much more memory... :D

And in pathtracing you need 4 times more samples to double the signal to noise ratio, so it means that you need 4 Titans to have half the noise you have with 1 Titan with the same render times...


Best regards
Filipe
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Refracty
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cook it longer

16000 Samples should be fine
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mbetke
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Or render bigger, resize then and the small grain is gone.
PURE3D Visualisierungen
Sys: Intel Core i9-12900K, 128GB RAM, 2x 5090 RTX, Windows 11 Pro x64, 3ds Max 2024.2
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oyjay76
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Hi guys. Thank you for all the replies. I finally decided to use an old V-Ray trick to speed things up - put a large light in front of the window and remove the physical sky. By doing that, I was able to get render times down to around 30 seconds for 1280x720 with an acceptable noise level at 1000 samp/pix

Attached is a rendering I did at double resolution which took less than 10 minutes at 2000 samp/pix

manalokos, I bought the Titans because I need the extra VRAM, but thanks for crapping all over my new gear!

I was able to render out a 30-second animation of this room in several hours. I'll post the video tomorrow.

Thanks again for the helpful comments,
JJ
Attachments
double-res,-2000-samples.jpg
Intel Core i7-3770 3.4 GHz
64 GB RAM
(4) GTX Titans
(3) GTX Titan Xs
3ds Max 2016

WEBSITE | http://www.renderquick.com/
FACEBOOK | https://www.facebook.com/pages/RenderQu ... 2170091984
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gabrielefx
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my quad Titan burnt my motherboard....:(

good render!
quad Titan Kepler 6GB + quad Titan X Pascal 12GB + quad GTX1080 8GB + dual GTX1080Ti 11GB
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NVN
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gabrielefx wrote:my quad Titan burnt my motherboard....:(

good render!
burnt?????
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whersmy
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gabrielefx wrote:my quad Titan burnt my motherboard....:(

good render!
Say what again..? psu issues?
Octane 2022.1.1 nv535.98

x201t - gtx580 - egpu ec
Dell G5 - 16GB - dgpu GTX1060 - TB3 egpu @ 1060 / RTX 4090

Octane Render experiments - ♩ ♪ ♫ ♬
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