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DAZ3D 4.16.0.3 refusing to using GPU for renders. 100% CPU

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  • axicecalaxicecal Posts: 15

    @takezo_3001

    learn to optimize your scenes

    yes having 24 or 48GB of vram is important too but judging from your post you have no clue how to use and optimize within Daz Studio... I guess that figures as it goes with 99% of this communtiy. 

  • PennyfarmanPennyfarman Posts: 32

    Nvidia 3070 was once the solution to the rendering problem. That's not the case anymore. I was able to render the Iray scene in one hour without any pixelation and graininess until I upgraded Daz 4.12 or 13 to Daz 4.16. I leave the MAX SAMPLE alone, it rendered great. I left everything to default and it rendered the quality to the 3Delight! However, after the shift to 4.16, the render quality has greatly decreased and time has doubled. I have no clue what is going on. The results are unacceptable. I tried reverting back to the earlier version but the problem persists. Something is stuck in the registry that's not reading "fresh" install. Anyone?

  • PerttiAPerttiA Posts: 10,024

    odysseyowl said:

    Nvidia 3070 was once the solution to the rendering problem. That's not the case anymore. I was able to render the Iray scene in one hour without any pixelation and graininess until I upgraded Daz 4.12 or 13 to Daz 4.16. I leave the MAX SAMPLE alone, it rendered great. I left everything to default and it rendered the quality to the 3Delight! However, after the shift to 4.16, the render quality has greatly decreased and time has doubled. I have no clue what is going on. The results are unacceptable. I tried reverting back to the earlier version but the problem persists. Something is stuck in the registry that's not reading "fresh" install. Anyone?

    Render taking 1-2 hours on a 3070, are you sure the rendering is done on the GPU and not on CPU?

    I can fathom a large scene taking an hour, but then again a 8GB card running on Windows 10 would have under 4.5GB's of VRAM available for geometry+textures...

  • HLEET_3DHLEET_3D Posts: 172
    edited January 2022 
    Reading log : "IRAY   rend error: Unable to allocate 2.000 MiB from 0.000 B of available device memory"
Too bad, you are 2GB short to make it fit into your VRAM.

    As Matt_Brown said, https://www.daz3d.com/scene-optimizer is the plugin that you need to reduce textures to fit into the vram needed to render your scene.

    I'm wondering why this plugin is not something integrated by default into daz3D, it's so important for lesser vram card.
    Anyway, 12 GB of VRAM seems to be the next "standard" in 2022 for NVIDIA graphic cards ; maybe your 1080 GTX has done it well until now, it's time to change.

    As PerttiA said : windows 10 OS will keep for him about 1GB of vram to work ... just because he wants to :/

    A little tip : change the preview window to something less demanding (lines for example) before rendering can help !
    Forget CPU rendering ... it's way too slow 

    Post edited by HLEET_3D on
  • jestmartjestmart Posts: 4,449

    Reducing the texture images yourself is often better than letting a brainless plug-in do it so I for one would not want to see it built in.

  • nakamuram002nakamuram002 Posts: 788

    odysseyowl said:

    Nvidia 3070 was once the solution to the rendering problem. That's not the case anymore. I was able to render the Iray scene in one hour without any pixelation and graininess until I upgraded Daz 4.12 or 13 to Daz 4.16. I leave the MAX SAMPLE alone, it rendered great. I left everything to default and it rendered the quality to the 3Delight! However, after the shift to 4.16, the render quality has greatly decreased and time has doubled. I have no clue what is going on. The results are unacceptable. I tried reverting back to the earlier version but the problem persists. Something is stuck in the registry that's not reading "fresh" install. Anyone?

    Odysseyowl,

    I went from a RTX 2060 Super/Intel 8700k to a RTX 3070ti/AMD 5800x back in December.  I noticed an increase in speed with no loss of quality.  When I upgrade to DS 4.16 back in the RTX 2060 days, I never noticed any rendering degradation.

    Before your RTX 3070, what kind of GPU were you using?  Also, does the scene you are trying to render contain any d-Force Strand-Based Hair?

     

  • juvesatrianijuvesatriani Posts: 556

    PerttiA said:

    It may very well be that even that amount of textures is too much for a 8GB GTX running on W10.

    Previously you were using DS 4.10, but since then Nvidia has changed how Iray rendering works, now the RTX functions are emulated in software on GTX cards, which decreases the amount of VRAM available for rendering on GTX cards. Nobody with an GTX card has given us any figures on how much VRAM is used for the emulation, so we don't know.

    You just have to keep hiding stuff (with the eye-icon) until DS starts rendering with the GPU.

    Hi @Perttia  Can you give advices which DAZ studio version and IRAY work better for older card (GTX) ? I think in last year I can rendering IRAY in CPU or GPU without Crash and shutting down my laptop but since I`m upgrading to 4.15 that crash and shut down always happening even for rendering legacy figures like Cookie -Chip in small resolution

  • PerttiAPerttiA Posts: 10,024

    juvesatriani said:

    PerttiA said:

    It may very well be that even that amount of textures is too much for a 8GB GTX running on W10.

    Previously you were using DS 4.10, but since then Nvidia has changed how Iray rendering works, now the RTX functions are emulated in software on GTX cards, which decreases the amount of VRAM available for rendering on GTX cards. Nobody with an GTX card has given us any figures on how much VRAM is used for the emulation, so we don't know.

    You just have to keep hiding stuff (with the eye-icon) until DS starts rendering with the GPU.

    Hi @Perttia  Can you give advices which DAZ studio version and IRAY work better for older card (GTX) ? I think in last year I can rendering IRAY in CPU or GPU without Crash and shutting down my laptop but since I`m upgrading to 4.15 that crash and shut down always happening even for rendering legacy figures like Cookie -Chip in small resolution

    I'm not sure, but based on some recent posts, the change was probably made somewhere between DS 4.10 and DS 4.12.

    Emulating the RTX functions takes about one GB of VRAM and W10 eats another GB of VRAM just for the fun of it and rendering in Iray requires a "working space" of more than a GB of VRAM, DS and the base load of the scene eat also some 200-600MB's of VRAM, so in effect the available VRAM on a GTX card is the amount of installed VRAM minus 3.5 to 4GB's - What's left is the space available for geometry and textures. Doesn't take much for the textures to eat yet another GB of VRAM...

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