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  • GPU production rendering hangs at 99%

    Maya 2017 U4 & Vray for Maya 3.6 stable nightly 27496

    NVIDIA GP100 (enabled) + Quadro M6000 (not enabled)

    So I'm still pretty new to GPU rendering in Vray for Maya. I have a large complex scene that I rendering at 6Kx6K with the following render settings:

    Image Format: exr (multichannel)

    Production engine: CUDA
    GPU Resize Testures: Full size textures
    GPU Tex Format: 8-bit

    AA Filter type: Lanczos
    Size: 2.0

    Max Sbdivs: 100
    Noise threshold: 0.010
    Max. render time (min): 0.0
    Ray bundle size: 128

    GI: On
    Primary: Brute force
    Secondary: Light Cache

    So I 'm noticing that my render is going great and gets to 99% completion in about 2 hrs, but then stays at 99% for hours. I let it go and it completed to 100% 4 hours later!

    Why would that last 1% take so much longer to complete?

    The Maya output window shows this:

    [2017/Jun/30|15:14:30] V-Ray: (Estimated time remaining: 0h 0m 0.0s): 100 % completed
    [2017/Jun/30|15:14:49] V-Ray: Number of rays per pixel changed to 339, total number of samples is 40002.
    [2017/Jun/30|15:14:49] V-Ray: (Estimated time remaining: 0h 2m 1.8s): 99 % completed
    [2017/Jun/30|15:15:08] V-Ray: Number of rays per pixel changed to 512, total number of samples is 29696.
    [2017/Jun/30|15:19:51] V-Ray: Number of rays per pixel changed to 500, total number of samples is 40000.
    [2017/Jun/30|15:20:07] V-Ray: Number of rays per pixel changed to 512, total number of samples is 38400.
    [2017/Jun/30|15:39:22] V-Ray: Number of rays per pixel changed to 267, total number of samples is 40050.
    [2017/Jun/30|15:39:41] V-Ray: Number of rays per pixel changed to 512, total number of samples is 30208.
    [2017/Jun/30|15:48:48] V-Ray: (Estimated time remaining: 0h 0m 0.0s): 100 % completed
    [2017/Jun/30|15:49:04] V-Ray: (Estimated time remaining: 0h 2m 22.6s): 99 % completed

    Still hangs at 99%....

    Thank you so much for you help!

  • #2
    What is your number of max sample level?

    Best,
    Blago.
    V-Ray fan.
    Looking busy around GPUs ...
    RTX ON

    Comment


    • #3
      Hey Blago,

      Max sample is set at default of 100.

      Comment


      • #4
        Originally posted by dariofx View Post
        Hey Blago,

        Max sample is set at default of 100.
        Try lowering that a bit to see if it will help .. Also probably it will be good to send the scene to the support, so they can check if we have the same behaviour, and forward that to the image-sampler devs.

        Best,
        Blago.
        V-Ray fan.
        Looking busy around GPUs ...
        RTX ON

        Comment

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