Stuck Buckets

[Morbid Angel]

ok, we are running into this issue. Frame before and after (all look similar) take 20 min to render but this one frame is stuck with 2 buckets in one place and is taking 8 hours with no end in sight. It happens on the random too, some frames render then they wont.

[glorybound]

what if you kill the stuck bucket Spawner?

[vlado]

Do you have any displacement there?

Best regards,
Vlado

[Morbid Angel]

no displacement in the scene. Here is what I have found. The vray messages prints material overbright warning. The material is a multilayered vray blend with additive mode. The lighting is simple area lights + dome light with brute force.
I have reduced the buckets to be 15 pixels and i can see the certain area where few pixels it cannot resolve.

[Morbid Angel]

Here is the error log.

[2010/Mar/2|09:43:56] 91 % completed.
[2010/Mar/2|09:44:15] warning: Material returned overbright or invalid color (object "object_name", RGB: -1.#IND -1.#IND -1.#IND)
[2010/Mar/2|09:44:15] Threads completed

[Morbid Angel]

further investigation revealed that adaptive dmc can render this frame fine, but we are rendering with adaptive subdivision and if the settings are 0/3 clr contrast 0.05 then it cant solve that bucket, but if the settings are 0/2 (basically less samples) then it solves that problem bucket.

[vlado]

Hm, I guess the invalid material is the problem. If you can get me that part of the scene to vlado@chaosgroup.com, it will be helpful to figure out what is the issue.

Best regards,
Vlado

[Morbid Angel]

Im going to get back to you on that...

[glorybound]

I have another scene that is stuck on the last bucket. I can let it sit here until morning, but not if it'll still be sitting there on that last bucket (6hrs so far). Will it finally complete or are people seeing that it never completes when it is stuck? It is stuck on a glass object with depth of field so it might be complex.

[vlado]

There were some issues in that regard that are now fixed for newer builds (thanks to Dmitry, I should say); not sure if your problem is the same though.

Best regards,
Vlado

[glorybound]

Am I stuck for now? Should I let it complete or crash it and start it over?

[glorybound]

I stopped it and I sure hope it doesn't happen again.

[glorybound]

I came in this morning to meet a deadline and another last bucket was sitting on my screen! I would scream, but nobody cold hear me. I do I fix this?

[vlado]

You can save the image and re-render the last bucket; other than that, you can email me to vlado@chaosgroup.com for an update that hopefully fixes the issue.

Best regards,
Vlado

[glorybound]

I tried that, but it was taking to long so I cloned in PhotoShop.