render issue after duplicating nodes with lray render

buddhanature28_00f0530ca7

I'm having a strange rendering problem in Daz Studio 4.8

Everything was going fine until I resaved a scene as another name, duplicated one of the figures (and her clothes and hair) and reposed the characters in the scene. Suddenly NVIDIA lray render started hanging at various progressions in the render and wouldn't progress any further. When I tried to cancel the render at the point where it hangs it crashes the program. I have successfully gotten the same scene to render just fine using 3Delight and it rendered very quickly. Of course the quality isn't nearly as good and I really need the quality of the NVIDIA lray render.

To problem solve I went back to an older file that originally just had the two characters with no duplicates and tested it and it rendered in the usual hour and a half with the NVIDIA lray render. But as soon as I duplicated the nodes and tried to pose the characters again I started getting the same hanging issue. (Except as I said with the 3Delight renders)

Any ideas or suggestions would be greatly appreciated!

In case its relevant I am working on a 64 bit windows 7 home premium, 8 GB RAM, Intel Core processor at 3.0, 3.3 GHZ

One last thing all the settings in lray render set to default except I shut off the dome and ground in the environment settings.

Oh and yes it did render successfully once with the duplicated node figure added to the scene with two characters already in it. I then took that scene resaved and reposed and the hanging issues started again.

mjc1016

What video card do you have?

Are attempting to use a GPU render?

buddhanature28_00f0530ca7

I am using an Intel(R) HD Graphics Family card. Not sure what you mean by a GPU render? Am using IRay render is this in addition?

mjc1016

Iray has three modes of rendering...CPU only, Hybrid (CPU and GPU) and GPU only. GPU = graphics processing unit (video card)

But GPU and Hybrid are Nvidia card only features.

The error you are having can be the result of running out of video memory, when doing a GPU render. It's supposed to fallback, gracefully, to CPU only...but it doesn't always do so, especially with older, out of date drivers. But, since you don't have an Nvidia video card and are doing CPU only rendering, then that cannot be the cause.

After you load the scene, make your adjustments and what not, but before you hit Render, open Task Manager and under Performance look at the memory usage...

buddhanature28_00f0530ca7

First off thanks for that explanation. I deleted about six ambient lights in the scene that I wasn't using (had the eye closed in the panel) and that allowed me to render three figures in the scene again. CPU was still 100 and memory 75% but it rendered in about 8 min. When I added a light preset back into scene it started hanging again with CPU and RAM usage the same at 100% and 75% so definitely seems to be that I don't have enough processing power for too many lights. Thanks for your help with this problem solve. Would upgrading to an NVIDIA card be my best bet in the future?

mjc1016

Intel's OpenGL implementation plain out SUCKS. The viewport relies on OpenGL. OpenGL has a hard limit on the number of lights that will 'work'. It is supposed to gracefully handle more than that maximum, but Intel's poor OpenGL drivers are probably choking on the extra lights.

If you are considering using Iray for any rendering, then yes, an Nvidia card...but if you aren't going to go the Iray route, either Nvidia or AMD cards will be a dramatic improvement.