Error [V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed

[Micha]

Hi,

I'm working on a complex scene in RTX mode and during the LC is calculated endless error messages popup. Is this a known problem?


The scene was rendering fine and without problems the last days.

-Micha


....

18.2.2022 16:50:43	Error	[V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed
18.2.2022 16:50:43	Error	[V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed
18.2.2022 16:50:43	Error	[V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed
18.2.2022 16:50:43	Error	[V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed
18.2.2022 16:50:43	Error	[V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed
18.2.2022 16:50:43	Error	[V-Ray] [OOCRenderThread::syncStream] 700: Stream sync failed
......

18.2.2022 16:54:10

Error

[V-Ray] [MemoryManagerGpu::releaseUnmappedMemoryFromInstanc e] 700: Could not release device buffer

[slavcho.brusev]

Hi,

Try restarting Rhino than GPU Driver update. If that doesn't help please send the project for us to review by using the "request" link below.
https://support.chaos.com/hc/en-us/requests/new

[Micha]

I use the latest recommended GPU driver. Would it be good to use a newer one?

[Muhammed_Hamed]

I use the latest recommended GPU driver. Would it be good to use a newer one?

Not really, we didn't upgrade it to the new one because of performance issues

[Micha]

slavcho.brusev At your request link I wasn't able to choose a reason like "bug report" and so I wasn't sure it's the right place. I decided me to sent a bug report per email and the ticket number is 24072. Is it ok too?


I found that the error happens in non-progressive mode only, in progressive RTX mode it works. Also the error isn't shown at every camera location, only in the near of the door.

[Micha]

Finally it helped to reset the global V-Ray options of the Rhino file. No big task and no error appears anymore.

[slavcho.brusev]

Thanks Micha!
I will forward the bug option request to our team here.