Daz3D Memory Spike causing Octane Render Engine Fail

KuriosDrachen

Specs: Ryzen 3600 - 2080ti - 32gb ram - 2tb ssd

Anyone else having this issue: Scene is about 10GB in total in the Vram (geometry + textures + overhead)

DS will be hanging out around the 11 gb Ram usage range (thus there's some amount of "out of core" memory use)

For no apparent reason (no user input, no scripts, renders, saving in process) Daz will suddenly eat up 25+gb of Ram

Octane starts throwing memory errors followed shortly by Octane Render Engine failing

I have to restart Daz 3D and after 30ish minutes the process starts all over

Anyone else having something like this?  It's pretty annoying

Rashad Carter

I'm not sure from your description which is the fatal flaw, the Vram or the System Ram? I suspect you are running out of Vram or System Ram, one or the other or maybe both. Depending on the version of Octane you are using you may have access to out of core textures, but not out of core geometry, you may not have a much overhead as you assumed. The 2080ti if I'm not msitaken is an 11gb card. If it is also used for display, then you will not have the full 11gb available for your rendering as some of the resources are reserved for the display. Also important to note is that in your page filing will show Vram as if it were system ram. So for myself if I have a scene that is 5gb page filing in Carrara, when I open Octane Render I will notice the page filing will jump up from 5gb to 10gb, which is the original 5gb plus the additional 5gb that is on the video card. So in a sense one could say the memory used by the card is visible in Vram as expected, but also in System Ram which you may not have expected...so really the Vram usage visible in TWO places, not just one. This is my experience with the Octane plug for Carrara, so there's a good chance its similar in the DS version.

Anyhow seems to me you are currently cutting it just a little too close at 10gb, such that pretty much ANYTHING else that happens to the computer or the file itself is going to push you over the limit of 11gb.

So just to be clear, you must have enough System Ram to cover both the basic scene PLUS the Vram it will use on the card...all of this needs to be available as System Ram. A 10gb DS scene file + 10gb more for the Vram needed to render, leads to the 20+GB system Ram usage situation you are having now. Hopefully your system has at least that much system Ram.

I'd say 32gb of system ram is cutting it close for scenes that will use 20+gb of combined Ram in order to render.