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Nvidia will no longer provide SLI support in their driver
Posted: Sat Sep 19, 2020 8:01 am
by jimho
Is it a good thing or bad thing to Octane Render?
Does this mean Otoy can treat Nvlink by themself?
If so, will the 2 pairs of 2080ti(2x2) can becomes possible?
https://nvidia.custhelp.com/app/answers ... e%20games.
Re: Nvidia will no longer provide SLI support in their driver
Posted: Sat Sep 19, 2020 9:17 am
by jimho
this can be an explanation why We cannot find the SLI interface in the nvidia control panel after the version of 451.48 nvidia display driver.
Re: Nvidia will no longer provide SLI support in their driver
Posted: Sun Sep 20, 2020 4:28 am
by grimm
SLI is only for games, Octane doesn't use it and in some cases it will slow Octane down a bit when activated. Nvlink is a faster connection between cards, is much faster than SLI, and is supported by Octane.
Re: Nvidia will no longer provide SLI support in their driver
Posted: Sun Sep 20, 2020 5:10 am
by jimho
If you are using nvlink in windows you will find the issue is that you need to enable SLI, then octane render can use the nvlink
and the problem I notice is after 451.48, you cannot enable it in the nvidia control panel, means you cannot active nvlink in octane render
the new version of 2020.1.5 requires 451+ nvidia displaydriver, so for instance if you want to use nvlink 451.48 becomes the only usable one.
Re: Nvidia will no longer provide SLI support in their driver
Posted: Mon Sep 21, 2020 3:54 am
by grimm
Yeah, sorry, I don't have cards that support NVlink so I can't test. All I know is what I have read here on the forum, that once NVlink is enabled in the Octane preferences that it will not be used until you load a scene that is larger than the vram of your cards. If you run out of vram then NVlink will be used. I don't think that it would depend on the Nvidia settings, although I use Linux and don't know how Windows handles it.
Re: Nvidia will no longer provide SLI support in their driver
Posted: Mon Sep 21, 2020 4:35 am
by jimho
grimm wrote: I don't think that it would depend on the Nvidia settings,
I am sure about this.
viewtopic.php?f=24&t=75704#p388940
Re: Nvidia will no longer provide SLI support in their driver
Posted: Mon Sep 21, 2020 7:47 am
by nejck
Just curious, so how does SLI / NVLink work moving forward then?
Re: Nvidia will no longer provide SLI support in their driver
Posted: Mon Sep 21, 2020 8:02 am
by jimho
nejck wrote:Just curious, so how does SLI / NVLink work moving forward then?
per nvidia's post, since they had provide low level API, so in future it should be the game DEV handle the SLI/Nvlink issue directly,
so I am thinking maybe when this happen, the 2x2pairs of 2080ti could becomes true?
prviously it is nvidia do not want this happen...