Rendering Fire in Cycles Crashes Blender 2.82 on Ubuntu #82499

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Rotartsi · 2020-11-08T00:33:29+01:00

Rotartsi commented

2020-11-08 00:33:29 +01:00

System Information
Operating system: Linux-5.4.0-52-generic-x86_64-with-glibc2.29 64 Bits

Ubuntu 20.04.1
Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.80.02 Cuda 11.0

Blender Version
Broken: version: 2.82 (sub 7), branch: Unknown, commit date: Unknown Unknown, hash: rBUnknown
Worked: 2.90.1 seems to work.

I have noticed that rendering the smoke/fire tiles seems to be MUCH faster in 2.90.1 compared to 2.82

Short description of error
When trying to render a fire/smoke sim in cycles on blender 2.82, blender will crash with:

blender: /build/blender-RL3axj/blender-2.82.a+dfsg/intern/cycles/kernel/../kernel/kernel_accumulate.h:690: ccl::float3 ccl::path_radiance_clamp_and_sum(ccl::KernelGlobals*, ccl::PathRadiance*, float*): Assertion `!"Non-finite final sum in path_radiance_clamp_and_sum!"' failed.

Maybe related to https://developer.blender.org/T62121?

That bug is about the render mode in the viewport, but in my case, the viewport works perfectly.
Switching the viewport to render mode with cycles and playing (or even scrubbing) works perfectly, but trying to actually render results in this crash.

The crash isn't consistent either. Sometimes it would crash on the second frame, and sometimes it won't crash until the 4th or 5th frame.

Exact steps for others to reproduce the error
Download blend file. https:*blend-exchange.giantcowfilms.com/b/9bA5QBRK/
Bake fluid sim.
Render animation.
Wait a few frames, blender should crash after rendering <12 frames? Not very consistent.

Other info, might not be relevant

I have denoising on, but it doesn't seem to be the culprit as it will sill crash if you turn it off. I should have everything else on the render side on default settings.

I also changed the nodes for the fluid domain material, following directions from https://www.youtube.com/watch?v=YzeXCfWLD0Q/

**System Information** Operating system: Linux-5.4.0-52-generic-x86_64-with-glibc2.29 64 Bits - Ubuntu 20.04.1 Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.80.02 Cuda 11.0 **Blender Version** Broken: version: 2.82 (sub 7), branch: Unknown, commit date: Unknown Unknown, hash: `rBUnknown` Worked: 2.90.1 seems to work. I have noticed that rendering the smoke/fire tiles seems to be MUCH faster in 2.90.1 compared to 2.82 **Short description of error** When trying to render a fire/smoke sim in cycles on blender 2.82, blender will crash with: ``` blender: /build/blender-RL3axj/blender-2.82.a+dfsg/intern/cycles/kernel/../kernel/kernel_accumulate.h:690: ccl::float3 ccl::path_radiance_clamp_and_sum(ccl::KernelGlobals*, ccl::PathRadiance*, float*): Assertion `!"Non-finite final sum in path_radiance_clamp_and_sum!"' failed. ``` Maybe related to https://developer.blender.org/T62121? That bug is about the render mode in the viewport, but in my case, the viewport works perfectly. Switching the viewport to render mode with cycles and playing (or even scrubbing) works perfectly, but trying to actually render results in this crash. The crash isn't consistent either. Sometimes it would crash on the second frame, and sometimes it won't crash until the 4th or 5th frame. **Exact steps for others to reproduce the error** [Download blend file. https:*blend-exchange.giantcowfilms.com/b/9bA5QBRK/ ](https:*blend-exchange.giantcowfilms.com/b/9bA5QBRK/) Bake fluid sim. Render animation. Wait a few frames, blender should crash after rendering <12 frames? Not very consistent. **Other info, might not be relevant** I have denoising on, but it doesn't seem to be the culprit as it will sill crash if you turn it off. I should have everything else on the render side on default settings. I also changed the nodes for the fluid domain material, following directions from https://www.youtube.com/watch?v=YzeXCfWLD0Q/

Rotartsi commented

2020-11-08 00:33:29 +01:00

Added subscriber: @Rotartsi

YAFU commented

2020-11-08 00:57:27 +01:00

Added subscriber: @YAFU

YAFU commented

2020-11-08 00:57:27 +01:00

I guess if this is a bug, then it won't be fixed in 2.82 anyway. You should test if the problem still occurs in Blender 2.83 LTS:
https://www.blender.org/download/Blender2.83/blender-2.83.8-linux64.tar.xz

I guess if this is a bug, then it won't be fixed in 2.82 anyway. You should test if the problem still occurs in Blender 2.83 LTS: https://www.blender.org/download/Blender2.83/blender-2.83.8-linux64.tar.xz

Rotartsi commented

2020-11-08 02:07:46 +01:00

Hm. Weird. It seems to work on 2.83. I guess this is a wontfix?

Maybe it's a issue with apt or ubuntu? 2.82 is the version you get when you run sudo apt install blender.

Hm. Weird. It seems to work on 2.83. I guess this is a wontfix? Maybe it's a issue with apt or ubuntu? 2.82 is the version you get when you run `sudo apt install blender`.

YAFU commented

2020-11-08 02:45:55 +01:00

You can download official portable versions from here:
https://download.blender.org/release/Blender2.82/

This could be a problem with Ubuntu package or something that was not fixed within 2.82 and it was fixed in later versions. When a new Blender version is released, previous versions are no longer maintained, except for the LTS version.
2.82a was the last version of 2.82. So your options are to use 2.83 LTS or 2.90.1

You can download official portable versions from here: https://download.blender.org/release/Blender2.82/ This could be a problem with Ubuntu package or something that was not fixed within 2.82 and it was fixed in later versions. When a new Blender version is released, previous versions are no longer maintained, except for the LTS version. 2.82a was the last version of 2.82. So your options are to use 2.83 LTS or 2.90.1

Robert Guetzkow commented

2020-11-08 10:34:24 +01:00

Added subscriber: @rjg

Robert Guetzkow commented

2020-11-08 10:34:24 +01:00

Changed status from 'Needs Triage' to: 'Resolved'

Robert Guetzkow closed this issue

2020-11-08 10:34:24 +01:00

Robert Guetzkow self-assigned this 2020-11-08 10:34:24 +01:00

Robert Guetzkow commented

2020-11-08 10:34:24 +01:00

@Rotartsi With the exception of LTS releases , only the current Blender release and versions that are in development will have patches developed for them. Once Blender 2.83 was released, 2.82a has reached its end of support. Since it works properly in all current versions, this has (presumably) already been fixed.

Do you think the guide should state more clearly that when the current release works properly, the issue should not be reported on the bug tracker?

@Rotartsi With the exception of [LTS releases ](https://www.blender.org/download/lts/), only the current Blender release and versions that are in development will have patches developed for them. Once Blender 2.83 was released, 2.82a has reached its end of support. Since it works properly in all current versions, this has (presumably) already been fixed. Do you think the [guide](https://blender.stackexchange.com/questions/1377/best-place-to-put-bug-reports/173685#173685) should state more clearly that when the current release works properly, the issue should not be reported on the bug tracker?

Rotartsi commented

2020-11-09 04:31:51 +01:00

Sorry about that. I just thought that 2.82 was the LTS release and not 2.83 since it was what came with apt install :P

But yeah, I think making the guide more clear would help. It doesn't even mention LTS releases at all.

Sorry about that. I just thought that 2.82 was the LTS release and not 2.83 since it was what came with apt install :P But yeah, I think making the guide more clear would help. It doesn't even mention LTS releases at all.

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Rendering Fire in Cycles Crashes Blender 2.82 on Ubuntu #82499