Stuck Buckets

[glorybound]

These last two buckets have been sitting there for over two hours on a three-hour render (5+ hours later). It was three, but one finishes. Do I cancel or wait? What's causing this and how can I avoid it in the furure?

[glorybound]

I gave it another 1/2 hour, so I had to kill it because it didn't move.

[ivan.slavchev]

Resumable rendering might be of use in such cases - I don't know if you have it enabled.
For the scene can you send it attached along with vraylog.txt files from %TEMP% folders on the computers you render with?

[kosso_olli]

For these cases I often try to reduce the bucket size. In addition to that, sometimes I change the bucket sequence.
If I know that the headlights in a frontal car shot are taking quite long (they always do), I set the bucket sequence to spiral. This starts the rendering in the middle of the image, so the headlights are in that area. That way the headlights have some buckets on them, while the rest is rendering the other parts of the image. Ideally, they both finish around the same time.

I would agree that V-Ray needs a clever way to deal with this, though.

[dreidesign]

We also got the problem from time to time. It would be really great if there would be a dynamic bucket splitting option which takes a set time into account. So that when a bucket is rendering for, lets say 3 minutes it gets automatically splitted into 4 parts.
I think that feature request is quite old.

[Ihno]

I think I've seen Valdo saying somewhere that they're working on something in this regard.
I believe they want to use the light cache to identify areas that need smaller buckets.