Issues with Bucket rendering, not with progressive render

[ghiom3d]

Hello,

I have some scenes since some month where i'm not able to render all the animations frames with Buckets rendering.
But it's work with progressive.

The issues i have is 2 differents behavior.
1, When rendering frames, at a random frame it's just close everything, vray frame buffer AND houdini.
2, the other one one behavior, always at a random frame, one or more buckets ar rendering forever . I have to send Kill signal to houdini and vray frame buffer to stop them.

1 scene is some jewels i modeled and send renders of variations. many vray render nodes of 3 frame, each frame are changing the gold colors. renders nodes calling différents meshes. It's crash/close at random render node. all jewells are cached in bgeo.sc.

The other scene is many Hairs growings on a head. Even hairs are cached or not in Bgeo.sc it's stills render rando bucket at random frames forever . need to send kill signal to everything .

that's not a need of more ram, i have more than needed for thoose scenes.
It's strange that's is not seems to happen in progressive render.

My computer is a 3990X with 256go ram
Pop!OS 20.10 up to date
vray nightly build 50x to 51003 same issues.
Houdini 18.5.499 and 18.5.532 same issues.
RTX 2080 up to date but not used at render.
System is on ssd nvme. Working space is also on nvme, a different one.
I have no error message or warning.

[bdancer]

I'm not sure we could do anything without a scene. We could sign NDA if needed.

[ghiom3d]

Hello thanks for your help, i understand.
I was hopping you already see this

I will try to send you the 2 scenes with caches files because they are long to builds.

[ghiom3d]

bdancer I have more informations about the issue.

Yersterday, on my hair animation, it's freeze at frame 50. I kill everything, start render at frame 50 it's work and freeze at frame 51 when building lightcache.
I disable lightcache and start the render at frame 51, it's freezing when build embree static..
I disable Embree and start render at frame 51 .. it's work !
I enable lightcache and keep embree disabled and it's still work !

So my issue of freeze on rendering seems to being embree relative.

I will try to make a lighter scene later to send you one.

[david.anastacio]

Hi ghiom3d,

I think we have seen something similar here, every now and then, actually pretty much every morning I have to re-queue 4-6 render nodes that got stuck on a frame over night. By stuck I mean rendering for 10-20 hours an 0% progress and if I connect to the deadline render log it shows the node stuck in the light cache progress at 0%. Then we just re-queue and the next render nodes completes the tasks with no issues.
Hard to tell what is the issue here, this wasn't happening some months ago and I can't remember exactly when it started. It happens pretty much in every scene with very different types of content.

We are using VFH 4.3, windows and Houdini 18.0.566

Best, David.

[ghiom3d]

Hello david.anastacio have you try to disable embree ?
My VHF is from 5.0 to 5.1 nighlty build for houdini 18.8.499.
I'm on linux Pop! OS 20.10

[david.anastacio]

Hello david.anastacio have you try to disable embree ?
My VHF is from 5.0 to 5.1 nighlty build for houdini 18.8.499.
I'm on linux Pop! OS 20.10

Hi, I have not tried that yet. But again, this doesn't seem to happen consistently so it's quite hard to debug.
Is there any progress on your side on this ghiom3d ? Have you done more tests?

Best,
David.

[ghiom3d]

Hi, I have not tried that yet. But again, this doesn't seem to happen consistently so it's quite hard to debug.
Is there any progress on your side on this ghiom3d ? Have you done more tests?

Best,
David.

all Renders are runnings fine if Embree is OFF. If i turn it ON, i have random crash or never-ending renders.

[bdancer]

> i have random crash

Scene will be needed for sure... As I wrote we could sign NDA if needed.