Trying to render on the GPU with tiles larger than a few hundred makes Blender crash #70336

New Issue

Frozen_Death_Knight · 2019-09-28T22:30:29+02:00

2019-09-28 22:30:29 +02:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 980/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30

Blender Version
Broken: version: 2.81 (sub 12), branch: master (modified), commit date: 2019-09-27 17:16, hash: be985bdde2

Short description of error
I have had this issue since I started using 2.8x back in December. I've been trying to follow the Cycles optimisation tips by the Blender Guru in this video , but when I try to set the render tiles to 512 or 1024 with the GPU selected, Blender has consistently been crashing every time, especially right at the end of a completed render of some reason. Also, rendering on the CPU does not cause these crashes for me strangely.

Exact steps for others to reproduce the error
Set the render tiles to one of those numbers on a scene. I don't know what is causing the issue, but if it is a universal problem, Blender should crash eventually from rendering with those settings.

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 980/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30 **Blender Version** Broken: version: 2.81 (sub 12), branch: master (modified), commit date: 2019-09-27 17:16, hash: `be985bdde2` **Short description of error** I have had this issue since I started using 2.8x back in December. I've been trying to follow the Cycles optimisation tips by the Blender Guru in [this video ](https://www.youtube.com/watch?v=8gSyEpt4-60), but when I try to set the render tiles to 512 or 1024 with the GPU selected, Blender has consistently been crashing every time, especially right at the end of a completed render of some reason. Also, rendering on the CPU does not cause these crashes for me strangely. **Exact steps for others to reproduce the error** Set the render tiles to one of those numbers on a scene. I don't know what is causing the issue, but if it is a universal problem, Blender should crash eventually from rendering with those settings.

Frozen_Death_Knight commented

2019-09-28 22:30:29 +02:00

Added subscriber: @Frozen_Death_Knight

Stephen Swaney commented

2019-09-28 22:44:46 +02:00

Added subscriber: @StephenSwaney

Stephen Swaney commented

2019-09-28 22:44:46 +02:00

/me guesses randomly: perhaps you are blowing out the GPU memory. Can you show us the error message? Also a .blend would be useful

Optimal tile size depends on your card. Maybe do a bit of testing to find appropriate size

/me guesses randomly: perhaps you are blowing out the GPU memory. Can you show us the error message? Also a .blend would be useful Optimal tile size depends on your card. Maybe do a bit of testing to find appropriate size

Frozen_Death_Knight commented

2019-09-30 18:15:05 +02:00

@StephenSwaney That's the thing, Blender rendering rarely works out properly and I have been trying out different settings for a long time. I've tried everything from 100 up to 1k and it rarely works out the way I expect it to. Here's another example of an error I get fairly often, a CUDA error:

@StephenSwaney That's the thing, Blender rendering rarely works out properly and I have been trying out different settings for a long time. I've tried everything from 100 up to 1k and it rarely works out the way I expect it to. Here's another example of an error I get fairly often, a CUDA error: ![CUDA Error.png](https://archive.blender.org/developer/F7781882/CUDA_Error.png)

Ray molenkamp commented

2019-09-30 18:25:48 +02:00

Added subscriber: @LazyDodo

Ray molenkamp commented

2019-09-30 18:25:48 +02:00

I'm gonna guess it's a TDR issue, too much work is queued and the OS kills the GPU driver after it gets unresponsive for more than a few seconds.

Frozen_Death_Knight commented

2019-09-30 18:41:53 +02:00

@LazyDodo Okay. Anything that can be done on my end to avoid those issues?

Ray molenkamp commented

2019-09-30 22:07:59 +02:00

I'd probably start by validating it is a TDR issue, by looking in the event viewer from around the time of the crash and see if there are any TDR events reported.

Brecht Van Lommel commented

2019-10-02 23:38:52 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-10-02 23:38:52 +02:00

It is not recommended anymore to use such large tile sizes, and smaller ones often render faster now. When using denoising or many render passes in general, large tile sizes will also run out of memory.

In any case we require a .blend file and exact steps to reproduce problem, this bug report is too vague.

It is not recommended anymore to use such large tile sizes, and smaller ones often render faster now. When using denoising or many render passes in general, large tile sizes will also run out of memory. In any case we require a .blend file and exact steps to reproduce problem, this bug report is too vague.

Frozen_Death_Knight commented

2019-10-04 16:52:51 +02:00

@brecht Okay, I will keep that in mind.

Here is is a file I am currently working on which crashes for me every time I press render. Since I don't know what setting is causing the crash, this is all I can really give you. I am using a Geforce GTX 980 card and quite recently installed the latest drivers.

Old Bird.blend

@brecht Okay, I will keep that in mind. Here is is a file I am currently working on which crashes for me every time I press render. Since I don't know what setting is causing the crash, this is all I can really give you. I am using a Geforce GTX 980 card and quite recently installed the latest drivers. [Old Bird.blend](https://archive.blender.org/developer/F7789183/Old_Bird.blend)

Richard Antalik commented

2020-01-13 20:29:57 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-01-13 20:29:57 +01:00

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

Richard Antalik commented

2020-01-13 20:29:57 +01:00

@Frozen_Death_Knight Is this still an issue with latest build? https://builder.blender.org/download/

Philipp Oeser commented

2020-01-22 15:06:18 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-01-22 15:06:18 +01:00

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

Philipp Oeser closed this issue

2020-01-22 15:06:18 +01:00

Philipp Oeser self-assigned this 2020-01-22 15:06:18 +01:00

Philipp Oeser commented

2020-01-22 15:06:18 +01:00

Will close since we did not hear back and this is most probably an issue with large tile sizes and denoising [which are not only slow, but eat a lot of (v)RAM].

This is a documented limitation:
https://docs.blender.org/manual/en/dev/render/layers/denoising.html#notes-and-issues

When using GPU rendering, the denoising process may use a significant amount of vRAM. If the GPU runs out of memory but renders fine without denoising, try reducing the tile size.

(I can render the file on GPU with a small tilesize -- but have to go down one multires level as well due to my poor 970m)

Thx for the report anyways, feel free to comment again if issues persist...

Will close since we did not hear back and this is most probably an issue with large tile sizes and denoising [which are not only slow, but eat a lot of (v)RAM]. This is a documented limitation: https://docs.blender.org/manual/en/dev/render/layers/denoising.html#notes-and-issues > When using GPU rendering, the denoising process may use a significant amount of vRAM. If the GPU runs out of memory but renders fine without denoising, try reducing the tile size. (I can render the file on GPU with a small tilesize -- but have to go down one multires level as well due to my poor 970m) Thx for the report anyways, feel free to comment again if issues persist...

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Trying to render on the GPU with tiles larger than a few hundred makes Blender crash #70336