OTOY Forums

LW 2015.3
Octane Plugin : 4.00 0.15
Octane API buid: 4.00 RC5
Octane DLL version: 4000015

Is there some issue in this build with big resolution renderings in conjunction with ram usage?
I´ve to render a 19.000 px image and RAM gets very high (125GB) while "updating Scene in GPU"
GPU memory is still some free (see attachment) and Out of core is disabled.

After rendering with limited region it seems that denoising does not work. But i do not get error message.

Thanks a lot

Some further test. When i deactivate denoising. RAM goes "only"up to 71.8 GB while" Updating Scene in GPU"

Sorry, I think that this is a known issue in the Octane 4.00 RC5 core that has been fixed in the latest build. A new plugin build with this core will be available later this week.

Thanks,
-Juanjo

Hello Juanjo.
Thanks for your reply.
Thats really good news. Looking forward to the new release.

Greetings,
Thomas

Hello Juano.

I´ve installed the latest RC 6.
RAM usage is still the same when rendering in this high resolution.
Don´t know whats going on.


Greetings

Do you know if somehow you could have a lot of instances or polygons in the same place? We have recently found an issue with the memory needed to build the Octane scene if there are a lot of polygons or instances just in the same place, just fixed in the latest RC7 core, I think.

Thanks,
-Juanjo

There are no instance objects on the same place. I´ve carpet instances.
When i reduce the final resolution (12000x 12000) the RAM is about 89.5GB. Still very high but i think this could be
not the reason that my Denoise Pass is always damage. See attachement.

With abut 3000x3000 (RAM usage 42GB) everythink works fine with Beauty and Denoise.

After testing and deleting object after object at the end of the day iam ending up with a scene with a cube which needs about 60GB of RAM
and gives with a 12000 px resolution a damaged DeMain Buffer Output. With strange color like upper example.

So i hope this is a good test scene for bug fixing. See attachment


Greetings

Hmm, in any case, I think that the main problem here is that the denoiser resolution is limited to around 4k currently, as far as I know ...

Thanks,
-Juanjo

Hello Juanjo.
Ohh... thats an important information. But bad news

So there is no plan to increase the limit for Realease version?

Is there an precise resolution limit you could give me?
So that we could stop rendering with try and error to get the most out of
it.

When i deactivate denoise pass the RAM behaves like it should do.

Thanks