Denoise + File Output nodes: freezing at 99% of render #51717

New Issue

Seth L. · 2017-06-05T01:58:38+02:00

Seth L. commented

2017-06-05 01:58:38 +02:00

System Information
macOS Sierra 10.12.4
Processor: 2.8 GHz Intel Core i7
Memory: 8 GB 1067 MHz DDR3
Graphics: ATI Radeon HD 4850 512 MB

Blender Version
Broken: 2.78 0021268311
Worked: N/A (new feature)

Short description of error
When Cycles' Denoise is used with the File Output node Blender is often freezing at 99%.
Blender becomes unresponsive and requires a Force Quit.
No file is written, neither to the directory specified in the Output settings nor to the directory specified in the File Output node.

In my experience it doesn’t freeze when Denoise is off.

It is more likely to crash when rendering at higher resolutions than lower.
When I rendered at 10% resolution, frame 1 was able to render, but frame 2 still crashed even at the very low resolution.
However, I was finally able to render all frames at 10% when I tried later in the day. Perhaps because the memory usage by other applications was lower then. Rendering at higher resolutions still failed though.
I have never had success rendering all three frames at full HD (1920x1080). I have sometimes had success rendering all three frames at 10% (of 1920x1080).

It doesn’t crash when the File Output node is removed.
This seems to indicate a connection with the freezing at 99%, because it is at the end of the render when File Output is used.

I am attaching a .blend file for testing. The render resolution is presently at 10% of 1920x1080 for speedy troubleshooting, but if it doesn't freeze at the ultra-low resolution, try something higher.
The purpose of the .blend was to try lighting a simple indoor scene with an environment to see how much Denoise can help with this typically noisy task. (It helps a lot! I was amazed.)
The .blend has 3 frames of animation with the only difference being the exposure.
I added a File Output node because I wanted my stills to output a file just the same as animation.
I wasn't setting out to find bugs, but since that happened, hopefully the .blend can useful for debugging.
I should mention that this is the second time I've created a denoised environment-lit indoor scene like this, and both resulted in freezing after rendering 99%. It's not a one-time fluke.

Finally, I found that knocking out just about all of the materials stopped the freezing, but it's not much of a solution, and still doesn't explain the 99%.

Exact steps for others to reproduce the error

Set render engine to Cycles.
Model an indoor scene where light can enter through windows.
Assign some materials.
Add environment lighting.
Enable the Denoise option.
In the Compositor, connect a File Output node.
Render a still or an animation, and see if Blender freezes at 99%.

environment_lighting_interior_denoise.packed.blend

**System Information** macOS Sierra 10.12.4 Processor: 2.8 GHz Intel Core i7 Memory: 8 GB 1067 MHz DDR3 Graphics: ATI Radeon HD 4850 512 MB **Blender Version** Broken: 2.78 0021268311 Worked: N/A (new feature) **Short description of error** When Cycles' Denoise is used with the File Output node Blender is often freezing at 99%. Blender becomes unresponsive and requires a Force Quit. No file is written, neither to the directory specified in the Output settings nor to the directory specified in the File Output node. In my experience it doesn’t freeze when Denoise is off. It is more likely to crash when rendering at higher resolutions than lower. When I rendered at 10% resolution, frame 1 was able to render, but frame 2 still crashed even at the very low resolution. However, I was finally able to render *all* frames at 10% when I tried later in the day. Perhaps because the memory usage by other applications was lower then. Rendering at higher resolutions still failed though. I have never had success rendering all three frames at full HD (1920x1080). I have *sometimes* had success rendering all three frames at 10% (of 1920x1080). It doesn’t crash when the File Output node is removed. This seems to indicate a connection with the freezing at 99%, because it is at the end of the render when File Output is used. I am attaching a .blend file for testing. The render resolution is presently at 10% of 1920x1080 for speedy troubleshooting, but if it doesn't freeze at the ultra-low resolution, try something higher. The purpose of the .blend was to try lighting a simple indoor scene with an environment to see how much Denoise can help with this typically noisy task. (It helps a lot! I was amazed.) The .blend has 3 frames of animation with the only difference being the exposure. I added a File Output node because I wanted my stills to output a file just the same as animation. I wasn't setting out to find bugs, but since that happened, hopefully the .blend can useful for debugging. I should mention that this is the second time I've created a denoised environment-lit indoor scene like this, and both resulted in freezing after rendering 99%. It's not a one-time fluke. Finally, I found that knocking out just about all of the materials stopped the freezing, but it's not much of a solution, and still doesn't explain the 99%. **Exact steps for others to reproduce the error** 1. Set render engine to Cycles. 2. Model an indoor scene where light can enter through windows. 3. Assign some materials. 4. Add environment lighting. 5. Enable the Denoise option. 6. In the Compositor, connect a File Output node. 7. Render a still or an animation, and see if Blender freezes at 99%. [environment_lighting_interior_denoise.packed.blend](https://archive.blender.org/developer/F620344/environment_lighting_interior_denoise.packed.blend)

Seth L. commented

2017-06-05 01:58:38 +02:00

Changed status to: 'Open'

Seth L. commented

2017-06-05 01:58:38 +02:00

Added subscriber: @quantumanomaly

Seth L. commented

2017-06-05 05:28:23 +02:00

Update: I was able to reproduce the same result on another machine with the following specs:

macOS Sierra 10.12.5
Processor: 2.8 GHz Quad-Core Intel Xeon
Memory: 16 GB 1066 MHz DDR3
Graphics: ATI Radeon HD 5770 1024 MB

I opened the .blend, specified the output directories, and tried to render as an animation (leaving the render resolution low). On the first frame Blender became unresponsive at 99%.

Update: I was able to reproduce the same result on another machine with the following specs: macOS Sierra 10.12.5 Processor: 2.8 GHz Quad-Core Intel Xeon Memory: 16 GB 1066 MHz DDR3 Graphics: ATI Radeon HD 5770 1024 MB I opened the .blend, specified the output directories, and tried to render as an animation (leaving the render resolution low). On the first frame Blender became unresponsive at 99%.

Seth L. changed title from ~~Deniose + File Output nodes: freezing at 99% of render~~ to Denoise + File Output nodes: freezing at 99% of render

2017-06-05 05:29:28 +02:00

Lukas Stockner was assigned by Bastien Montagne

2017-06-05 08:41:24 +02:00

Bastien Montagne commented

2017-06-05 08:41:24 +02:00

Added subscriber: @mont29

Lukas Stockner commented

2017-06-09 17:13:08 +02:00

I can't reproduce the issue on Linux, maybe this is a Mac-specific problem?

If yes, it would be great if someone who can reproduce this on Mac could do so in a debug build and give me a backtrace of the freezing thread(s).

I can't reproduce the issue on Linux, maybe this is a Mac-specific problem? If yes, it would be great if someone who can reproduce this on Mac could do so in a debug build and give me a backtrace of the freezing thread(s).

Joel Godin commented

2017-06-09 21:50:23 +02:00

Added subscriber: @FloridaJo

Joel Godin commented

2017-06-09 21:50:23 +02:00

Wasn't able to reproduce on my mac.

Wasn't able to reproduce on my mac. ![System info.png](https://archive.blender.org/developer/F626452/System_info.png)

Seth L. commented

2017-06-13 11:21:04 +02:00

@LukasStockner I would be happy to. Where can I find a "debug build"? This is the first time I've heard of this type of build; pardon my ignorance.

Lukas Stockner was unassigned by Dalai Felinto

2019-12-23 16:36:40 +01:00

Dalai Felinto commented

2019-12-23 16:36:40 +01:00

Added subscriber: @LukasStockner

Germano Cavalcante commented

2020-01-23 16:53:15 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-01-23 16:53:15 +01:00

Changed status from 'Confirmed' to: 'Needs Developer To Reproduce'

Germano Cavalcante commented

2020-01-23 16:53:15 +01:00

I also cannot reproduce the problem.
Has it been solved in blender 2.83? https://builder.blender.org/download/

I also cannot reproduce the problem. Has it been solved in blender 2.83? https://builder.blender.org/download/

Aaron Lalor commented

2020-01-30 04:04:31 +01:00

Added subscriber: @CoderWolf

Sybren A. Stüvel commented

2020-02-04 11:52:11 +01:00

Added subscriber: @dr.sybren

Sybren A. Stüvel commented

2020-02-04 11:52:11 +01:00

Changed status from 'Needs Developer To Reproduce' to: 'Needs User Info'

Sybren A. Stüvel commented

2020-02-04 11:52:11 +01:00

@quantumanomaly can you reproduce this with a Blender 2.83 build from https://builder.blender.org/download/ ?

Aaron Carlisle commented

2020-02-10 21:13:23 +01:00

Added subscriber: @Blendify

Aaron Carlisle commented

2020-02-10 21:13:23 +01:00

Changed status from 'Needs User Info' to: 'Resolved'

Aaron Carlisle closed this issue

2020-02-10 21:13:23 +01:00

Aaron Carlisle self-assigned this 2020-02-10 21:13:23 +01:00

Aaron Carlisle commented

2020-02-10 21:13:23 +01:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

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Denoise + File Output nodes: freezing at 99% of render #51717