Performance while rendering

Sun Apr 12, 2015 3:57 pm

Hi guys,

I've a question regarding the performance of the system while rendering. Is it normal, that the rest of the system is pretty useless when rendering an image in the picture viewer? Things like youtube or other video stuff is impossible to watch and even windows aero things (the animation when hovering over the folder icon the task bar and so on) are slow as hell. Priority in octane is set to low and the VRAM is not even half full.

Specs: R16, Win 7, current Octane release, GTX 780 with 6GB, 12 GB Ram

Any suggestions or is this just as it is supposed to be?

Thanks:)

Sun Apr 12, 2015 4:45 pm

It really doesn't matter what level of priority you have checked for your gpu's. Octane is going to use %100 of it while you are rendering to the picture viewer. However, do keep it at low or medium. Because regardless of your system, you won't be able to maybe even move your cursor when it's set to HIGH.

just read a book or taka a walk... or just render with a spare gpu

Sun Apr 12, 2015 6:06 pm

KeeWe wrote:Hi guys,

I've a question regarding the performance of the system while rendering. Is it normal, that the rest of the system is pretty useless when rendering an image in the picture viewer? Things like youtube or other video stuff is impossible to watch and even windows aero things (the animation when hovering over the folder icon the task bar and so on) are slow as hell. Priority in octane is set to low and the VRAM is not even half full.

Specs: R16, Win 7, current Octane release, GTX 780 with 6GB, 12 GB Ram

Any suggestions or is this just as it is supposed to be?

Thanks:)

get Your screen into CPU using iGPU that will solve Your problem =) I use to do that from time to time, but programs like Marvelous designer seems to have some issues, so maybe if You notice anything, remember to plyg it back to discrete GPU =)

Sun Apr 12, 2015 7:23 pm

Good suggestion, thank you. I dont think theres a software solution to switch. A manual switch is definetly a reasonable thing in some cases but right now, i just wanna use youtube/vimeo while rendering 15-30 minutes images. Is this behaviour different in the standalone version? It would be nice if on low priority the GPU would scale regarding all the tasks. Right now i dont care if the image takes 10 or 12 minutes if i could use the system to do some other stuff^^

Mon Apr 13, 2015 5:35 pm

Hi KeeWe,

GPU priority should work.... are you sure, you checked the "Use Pri." mark?
See the screenshot below.

Maybe it also has to do with "Use all GPUs" in the render Settings tab. I leave this off.

As you can see, my first GPU (with 2 Monitors attached) is only used by 75%. This is enough for smooth working on other task, even Photoshop, After Effects and so on. I have the same behavior on GPU usage, no matter if I do preview rendering or final rendering with the picture manager.
Or does Octane behave different, if you only have 1 GPU installed on your system?

If this doesn`t solve your problem, what NVIDIA driver do you use, and what C4D octane version?

Cya,
ChrisVis

Wed Apr 15, 2015 5:08 pm

If you have your GPU set to low priority and Primary is checked, that is as good as it gets on a 1 GPU system. You need more than 1 GPU to be able to work almost normally while Octane (plugin or standalone) renders. At least that has been my experience.

Wed Apr 15, 2015 9:30 pm

@ChrisVis

Thx for your detailed answer. The Problem is: i only have one GPU installed. The graphics unit of the CPU would be probably enough to do simple tasks but as far as i get it i need to plug one of my monitors in the connecter of the Mainboard. A software side solution is not possible... right?

@jblessing

Thanks for the clarification on that one. I thought it could be just my system or some settings but if its normal, i'm fine with it. Although some settings to manipulated the usage would be pretty nice.