Super long render often crashes on Image Save

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1. That the issue has not already been disclosed
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All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
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Renbry
Licensed Customer
Posts: 43
Joined: Fri Nov 23, 2018 9:09 am

Hi there,

I know this is a bit of a long shot but I wanted to record it down in case it may lead to something.

I'm doing a lot of Baking using Houdini 18.5.596 & Octane 2020.2.4.0 on Windows 10 with a mix of 1080, 1080Ti, 2080Ti, A4000 & A6000 cards.

The bakes can run for several days. The problem is that the render crashes as it's saving the image. The renders are 16k in size, are EXR format, no render passes, no RLE compression and no EXR Layers. I've even tried disabling asynchronous file saves to test.
What did seem to be successful is keeping the samples low. I started with 16000 which meant ultra clean renders but no renders were able to save (after 2+ days of rendering) and so i tried 128/256 as high speed tests and these saved successfully! So i've been increasing the sample count to around 8192 which as you see in the screenshot, does let some frames finish - but not all.

As I said, i know this is a long shot but could there be any ideas on what may be happening here ? It's terrible to loose several days of rendering as the image is saved at 100% complete : (

Thanks so much!

Matt Hermans
Electric Lens Co
Capture.PNG
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juanjgon
Octane Plugin Developer
Posts: 8867
Joined: Tue Jan 19, 2010 12:01 pm
Location: Spain

Can you please share an example scene, as simple as possible, to reproduce this problem here? I can't figure out why the samples can be related to this crash unless you are running out of CPU RAM or VRAM, but I don't think so.

Thanks,
-Juanjo
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