Rendering stops when reading textures

[Fredrik Averpil]

Not sure what causes this but we have ongoing problems with multiple scenes (from completely different projects) during region rendering with V-Ray for Maya 3.60.02 official release. The issue is that a render just stops and never completes. The CPU load is down at around 0%, so clearly hanged.

I'm attaching one log from Windows and one log from Linux.
Mayabatch args:

# Windows
-r vray -x 3508 -y 4961 -reg 2030 2232 3444 3730 -s 1 -e 1 -rl masterLayer -cam renderCam -proj //server/prod/proj81/maya -rd //server/prod/proj81/maya/images/scene10/slices -im <Scene>_slice227_<Layer>_<Camera>. //server/prod/proj81/maya/scenes/scene10.mb

# Linux
-r vray -x 3508 -y 4961 -reg 1015 1217 3157 3443 -s 1 -e 1 -rl masterLayer -cam renderCam -proj //server/prod/proj81/maya -rd //server/prod/proj81/maya/images/scene10/slices -im <Scene>_slice204_<Layer>_<Camera>. //server/prod/proj81/maya/scenes/scene10.mb

I noticed that in the Windows log there's an error:

V-Ray error: Exception [module=1] : Rendering region (2062,1358)-(2078,1374)

But there's no such error in the Linux log.

Please note that if we just hit retry in our render manager, the region render is completed when re-rendered, even if re-rendered on the same machine which previously hanged. So this issue is very hard, if not impossible, for us to replicate.

[iLuso]

What texture format/compression you use?

[jacob@ir]

What texture format/compression you use?

It stops randomly at different textures (jpegs, tifs) and in different scenes, so shouldn't be related to texture format.

[yolov]

At a first glance, I don't really see anything in the log that could point me in the right direction. Is there any chance you can share a scene that you know has had this problem so that we can try and replicate it here?

[Fredrik Averpil]

Hi Yolov,

I can probably share the scene but the problem is I cannot repro it... so you may have to run it again and again and again... I'll check in with the artist who notified me about this and see if I can send over the scene.

[Morbid Angel]

exception rendering region usually means it crashed, its not related to any texture specifically.

[Fredrik Averpil]

> its not related to any texture specifically.

Perhaps not. The crash always happen when V-Ray is outputting texturepaths to its render log, which happens while rendering.

[vlado]

I scene will be very helpful to find out what the issue is.

Best regards,
Vlado

[Fredrik Averpil]

Transferring the scene to you now (~ 11 GB). I'm sending the download URLs to support@chaosgroup.com

We use Maya 2016 Ext1 SP5 with V-Ray 3.60.02 official to render this. Maya batch commands with regions in the top of this thread.
I'm not sure you're going to be able to repro the crash, as we can just retry any region renderings that fail and they will succeed ...

[Fredrik Averpil]

Transfer complete. Please open scene10.mb.

[yolov]

Downloading now.

[yolov]

Just an update - no luck reproducing this so far, but I'll let you know if I manage to find something.

[Fredrik Averpil]

I suspected it could be hard to track this one down. There's no way to increase the verbosity of the render log?

[vlado]

Could you try build 27844 or later from the V-Ray 3.6 stable builds and see if it helps?

Best regards,
Vlado

[GoodbyeKansas]

We are having similar problems. Renders just stops. Maya is still responsive but cpu load goes down to 0%.

Using: vrayVersion ['3.60.03', '27878']

-- Erik