Display dedicated GPU

Wed Mar 05, 2014 10:31 pm

I have a GPU which is dedicated just for display and it is not used for GPU rendering. I have it clearly turned off. While othe GPUs are rendering I can use WIndows normally like nothing is happening. But when rendering image sequences Windows GUI stutters during "Updating scene in GPU ... " phase. My mouse becomes twitchy, if I move a windows during this phase the movement is far from smooth and so on. In "RENDERING" phase everything gets back to normal.

It wasn't like this before.

Thu Mar 06, 2014 9:17 am

BorisGoreta wrote:I have a GPU which is dedicated just for display and it is not used for GPU rendering. I have it clearly turned off. While othe GPUs are rendering I can use WIndows normally like nothing is happening. But when rendering image sequences Windows GUI stutters during "Updating scene in GPU ... " phase. My mouse becomes twitchy, if I move a windows during this phase the movement is far from smooth and so on. In "RENDERING" phase everything gets back to normal.

It wasn't like this before.

Have you updated the NVidia driver? ... sounds like if the PCIe bus were collapsed while Octane updates the data in the GPUs.

-Juanjo

Thu Mar 06, 2014 11:16 am

I would say this is new(er) behavior.
I will update tonight but yes, this is occurring in recent versions.

Thu Mar 06, 2014 2:29 pm

I have the latest nVidia drivers and this wasn't happening before.

Thu Mar 06, 2014 3:25 pm

BorisGoreta wrote:I have the latest nVidia drivers and this wasn't happening before.

Do you know if with previous plugin version (1.25.0) this problem also happens? ... and with Standalone?

-Juanjo

Thu Mar 06, 2014 4:02 pm

I will check.

Fri Mar 07, 2014 12:09 am

I'm so bad at standalone, it took me 5 minutes just to find my object in the viewport. Unfortunately I don't know how to make a complicated scene with lots of instances in standalone version so I can't test it. With just one object Octane flies and I can't make it work hard enough to test. If someone who knows standalone better could test this it would be great.

Fri Mar 07, 2014 11:50 am

BorisGoreta wrote:I'm so bad at standalone, it took me 5 minutes just to find my object in the viewport

don't worry, you're not alone

Fri Mar 07, 2014 10:30 pm

I'm so stupid, we now have export to standalone feature which I have used to export the scene. I started turntable render in Octane and there was no Windows GUI problems, everything was butter smooth. I have also noticed that Octane standalone does not have any pause between the frames, as soon as current frame reaches max samples the next frame starts rendering immediately. In LW plugin there is a WAITING ... phase and UPDATING SCENE IN GPU ... Those two phases add 2 seconds per frame and one frame renders in 2 seconds also so it doubles the time.

The GUI stutter happens during UPDATING SCENE IN GPU... phase.

Sat Mar 08, 2014 6:29 am

"Those two phases add 2 seconds per frame":
strange, Boris, because some monthes ago, with a previous 1.5 beta LW build, we tweaked with Juan the plugin for animation ( it was a random bug /crash when rendering a lot of frames ) and the plugin was very quick, without such a delay between frames...
But i didn't tried the last version, because most of my activity is for illustrating jobs actually ...
I'll try to have a look soon to look at this...