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GPU not Rendering, only CPU

AnonTurtleAnonTurtle Posts: 31
in The Commons

I have CPU rendering off and only GPU rendering on with OptiX. Don't know why it's rendering with CPU.

Rendering in NVIDIA IrayCompiling Shaders - 0/1Rendering imageRendering...Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CUDA device 0 (GeForce GTX 1080 Ti): Processing scene...Iray VERBOSE - module:category(IRAY:RENDER):   1.8   IRAY   rend progr: CUDA device 1 (GeForce GTX 1080 Ti): Processing scene...Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend progr: CUDA device 2 (GeForce GTX 1080 Ti): Processing scene...Iray VERBOSE - module:category(IRAY:RENDER):   1.6   IRAY   rend stat : Geometry memory consumption: 417.372 MiB (device 2), 0 B (host)Iray VERBOSE - module:category(IRAY:RENDER):   1.10  IRAY   rend stat : Geometry memory consumption: 417.372 MiB (device 1), 0 B (host)Iray VERBOSE - module:category(IRAY:RENDER):   1.9   IRAY   rend stat : Geometry memory consumption: 417.372 MiB (device 0), 0 B (host)Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CPU: Processing scene...Iray VERBOSE - module:category(IRAY:RENDER):   1.8   IRAY   rend stat : Native CPU code generated in 0.184sIray Iteration: 1Iray :Render target canvas was written.Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CUDA device 1 (GeForce GTX 1080 Ti): Processing scene...Iray VERBOSE - module:category(IRAY:RENDER):   1.2   IRAY   rend progr: CUDA device 2 (GeForce GTX 1080 Ti): Processing scene...Iray Iteration: 2Iray :Render target canvas was written.Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CPU: Processing scene...Iray Iteration: 1Iray :Render target canvas was written.Iray Iteration: 2Iray :Render target canvas was written.Iray Iteration: 3Iray :Render target canvas was written.Iray Iteration: 4Iray :Render target canvas was written.Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CUDA device 1 (GeForce GTX 1080 Ti): Processing scene...Iray Iteration: 5Iray :Render target canvas was written.Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CPU: Processing scene...Iray Iteration: 1Iray :Render target canvas was written.Iray Iteration: 2Iray :Render target canvas was written.Iray Iteration: 3Iray :Render target canvas was written.Iray Iteration: 4Iray :Render target canvas was written.Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CUDA device 1 (GeForce GTX 1080 Ti): Processing scene...Iray Iteration: 5Iray :Render target canvas was written.Iray VERBOSE - module:category(IRAY:RENDER):   1.14  IRAY   rend progr: CPU: Processing scene...

 

 

 

Comments

  • fred9803fred9803 Posts: 1,565
    edited January 2019

    If your using one of the new nvidia 2000 series cards, you will need to use the Beta version of DS for the GPU to work.

    Edit - I notice you're using a 1080ti. Have you selected it in the render settings options?

    Post edited by fred9803 on
  • AnonTurtleAnonTurtle Posts: 31
    fred9803 said:

    If your using one of the new nvidia 2000 series cards, you will need to use the Beta version of DS for the GPU to work.

    Edit - I notice you're using a 1080ti. Have you selected it in the render settings options?

    Yes, selected all 3 GPUs, CPU off, Optix On, Medium Threshold = 64, High = 256 (Down from the 512 & 1024 default)

  • kaotkblisskaotkbliss Posts: 2,914

    Usually it lists the texture consumption after the geometry consumption. I've noticed on my machine when it skips that listing of the textures, it means the total has gone beyond the RAM of the video card, and so gets dumped to CPU automatically.

  • fred9803fred9803 Posts: 1,565

    At first try my 2080 wouldn't work but after closing DS and restarting it's worked fine ever since.

  • kenshaw011267kenshaw011267 Posts: 3,805

    There have been several reports of thisd happening when Optix acceleration is enabled, Try disabling optix.

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