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Stuck buckets ......... again!

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  • Stuck buckets ......... again!

    Hi,

    I'm afraid I've hit the dreaded stuck buckets issue again!

    I know the best solution is to send Chaos Group a file and see if you can reproduce it, but the problem I've found is that the issue mostly occurs when batch rendering across my render farm. I see nodes settling to 12% or 25% CPU usage (depending on the number of cores the machine has) and that's where they stay for hours if I leave them. When I switch the KVM to the stuck machine and look at the batch display, Vray is at 90%.

    The thing is, if I cancel the render and send that frame again, it will normally render the second time around, so whilst it happens a lot with the scenes I render, it's not an easily reproduced error.

    The work I do consists mostly of rendering huge CAD models of cars, and there is a lot of 'crap' in these models.....open edges, 0 polygon meshes etc. etc. but there is just too much to clean up, so at a certain point I have to get on with rendering, but I'm finding this 'stuck buckets' issue with nearly every job now. It normally get's worse when I render with motion-blur.

    So, whilst I'd be happy to send you a file where the issue occurs, I won't be able to point you to a specific frame where it happens every time.

    I suppose what I would like to ask you is, with this being an issue that comes up quite often in the forum, are there any common settings I can tweak that may help me eradicate some of the 'stuck buckets' ?

    Regards,

    Jason Fox
    Azure C.G.I. Ltd.

  • #2
    are you using light cache for secondary at all? if yes, try bruteforce for both gi bounces and see if it helps.
    Dmitry Vinnik
    Silhouette Images Inc.
    ShowReel:
    https://www.youtube.com/watch?v=qxSJlvSwAhA
    https://www.linkedin.com/in/dmitry-v...-identity-name

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    • #3
      Do you use DR for this? Also, in such cases, more useful than a scene file is a minidump file from a machine while it it stuck in this way. Minidumps can be generated with Process Explorer.

      Best regards,
      Vlado
      I only act like I know everything, Rogers.

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      • #4
        Hi Vlado,

        I use BNR (Butterfly Net Render) for my render farm, it's basically just a 'Maya Batch' based controller.

        What is 'process explorer' ? I'll gladly use it if it would help to narrow down this issue.

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        • #5
          OK, I've found 'Process Explorer' and will run it next time I get some stuck nodes!

          I'm setting off another render today, so I'm sure I'll have some data for you soon

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