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2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 11:35 am
by analog
Hey Guys,
i`m a little confused about the C4D-Plugin 2020.1.5-R4 and the RTX3090. Some say only denoiser/tonemapping may not be supported, some say the 3090 and the plugin do not together work at all.
I just got my new rtx3090FE, plugged it in, started C4d and tried to config my settings. Unfortunatelly Octane does not recognize the card correctly. (see Attachment)
The log says: device 0: failed to find a CUDA binary matching compute model 8.6
So is it a problem with my card/setup or is the card just not supported yet?
THX, OlliO
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 12:37 pm
by lanklaf
analog wrote:Hey Guys,
i`m a little confused about the C4D-Plugin 2020.1.5-R4 and the RTX3090. Some say only denoiser/tonemapping may not be supported, some say the 3090 and the plugin do not together work at all.
I just got my new rtx3090FE, plugged it in, started C4d and tried to config my settings. Unfortunatelly Octane does not recognize the card correctly. (see Attachment)
So is it a problem with my card/setup or is the card just not supported yet?
THX, OlliO
Make sure you have the latest STUDIO driver.
Also plug in RTX 3090 into the MAIN PCI-E slot.
If it doesn't work, try unchecking the "use RTX" checkbox.
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:06 pm
by analog
Hmm. I have the latest studio driver (27.21.14.5730) and the card is in the correct pci-e slot. I deactivated RTX but still not working.
The log says: device 0:
failed to find a CUDA binary matching compute model 8.6
So it should run with 2020.1.5-R4 and the RTX 3090?
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:09 pm
by lanklaf
analog wrote:Hmm. I have the latest studio driver (27.21.14.5730) and the card is in the correct pci-e slot. I deactivated RTX but still not working.
So it should run with 2020.1.5-R4 and the RTX 3090?
It should, only denoiser is missing.
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:23 pm
by analog
I can only check "Denoiser"

Seems I´m not the only one having this problem:
viewtopic.php?f=9&t=75865&p=393023&hili ... .6#p393023
The Octane-Benchmark is working fine...

Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:29 pm
by lanklaf
Do you have a new cuDNN library?
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:36 pm
by analog
lanklaf wrote:
Do you have a new cuDNN library?
No. should I? As I wrote the octane benchmark works fine.. (With RTX enabled)
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:46 pm
by lanklaf
analog wrote:lanklaf wrote:
Do you have a new cuDNN library?
No. should I? As I wrote the octane benchmark works fine.. (With RTX enabled)
Yes, only works with the new cuDNN library.
Delete this folder:
C:\Users\USERNAME\AppData\Local\OctaneRender\thirdparty
Octane will then automatically install the latest cuDNN library on the first start

Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 1:59 pm
by analog
I did that. Octane installed the same version again (cudnn64_7.dll) so still not working
BTW: Thanks a lot for your help!
Re: 2020.1.5-R4 & RTX 3090 not working at all
Posted: Wed Dec 09, 2020 2:02 pm
by lanklaf
analog wrote:I did that. Octane installed the same version again (cudnn64_7.dll) so still not working
BTW: Thanks a lot for your help!
Aha, ok:
You also can download it manualy:
https://render.otoy.com/downloads/ef/08 ... _4_win.zip
And unpack to this location:
C:\Users\USERNAME\AppData\Local\OctaneRender\thirdparty\cudnn_8_0_4
Maybe Octane is downloading an older version of cuDNN because you also have an RTX2000 card.
So it's better to do it manually.