RadeonVII Cycles render freezes on complex volumetric scenes #76489

New Issue

Gregor Katzschner · 2020-05-07T02:41:51+02:00

Gregor Katzschner commented

2020-05-07 02:41:51 +02:00

System Information
Operating system: Windows 10
Graphics card: dual Radeon VII

Blender Version
Broken: (All Blender Versions)
Short description of error
When i want to render big szenes with complex volumetrics (Smoke simulations) the render is freezing (the usage goes to 0% and it stops rendering but dont close blender)
it is the same issue with a fresh reinstall of windows or an other mainboard / CPU / Radeon VII(i testet 3) / RAM (i used a 9900K, z390designare, 64gb 3200 ram, 7920X, 64gb 3000 ram, ASUS Tuff x299 mark 2)
Exact steps for others to reproduce the error
download the following project files (rar) as example https://www.patreon.com/posts/36626880 its free
open the Flat Large Scale 1
bake the simulation
bake the noise at 3
render frame 65
wait

Based on the default startup or an attached .blend file (as simple as possible).

**System Information** Operating system: Windows 10 Graphics card: dual Radeon VII **Blender Version** Broken: (All Blender Versions) **Short description of error** When i want to render big szenes with complex volumetrics (Smoke simulations) the render is freezing (the usage goes to 0% and it stops rendering but dont close blender) it is the same issue with a fresh reinstall of windows or an other mainboard / CPU / Radeon VII(i testet 3) / RAM (i used a 9900K, z390designare, 64gb 3200 ram, 7920X, 64gb 3000 ram, ASUS Tuff x299 mark 2) **Exact steps for others to reproduce the error** download the following project files (rar) as example https://www.patreon.com/posts/36626880 its free open the Flat Large Scale 1 bake the simulation bake the noise at 3 render frame 65 wait Based on the default startup or an attached .blend file (as simple as possible).

Gregor Katzschner commented

2020-05-07 02:41:51 +02:00

Added subscriber: @GregorBoxer

Alaska commented

2020-05-07 07:07:25 +02:00

Added subscriber: @Alaska

Alaska commented

2020-05-07 07:07:25 +02:00

Flat Large Scale - 01.blend

Here's the .blend file for people who don't want to go to the Patreon link.

[Flat Large Scale - 01.blend](https://archive.blender.org/developer/F8517490/Flat_Large_Scale_-_01.blend) Here's the .blend file for people who don't want to go to the Patreon link.

Alaska commented

2020-05-07 07:10:05 +02:00

Also, @GregorBoxer by "Broken: All versions of Blender", what do you mean? Specifically what versions of Blender have you tried.

Ankit Meel changed title from ~~AMD-RadeonVII-unstable-cycles-opencl~~ to RadeonVII Cycles render freezes on complex volumetric scenes

2020-05-07 13:43:45 +02:00

Ankit Meel commented

2020-05-07 13:44:15 +02:00

Added subscriber: @ankitm

Ankit Meel commented

2020-05-07 13:44:15 +02:00

Can you render with less samples & less resolution divisions ?

Gregor Katzschner commented

2020-05-07 14:01:46 +02:00

I tried blender 2.80 2.81 2.82 2.83 2.79b and the blender 2.83.9 vdm branch and blender 2.90
(For the blender versions i dont know the specific one because i deltet them and mainly use the vdm version but the issue is on all blender versions on the top)

I tried blender 2.80 2.81 2.82 2.83 2.79b and the blender 2.83.9 vdm branch and blender 2.90 (For the blender versions i dont know the specific one because i deltet them and mainly use the vdm version but the issue is on all blender versions on the top)

Alaska commented

2020-05-07 14:03:26 +02:00

I've tried playing around with this scene a few times on my computer and I haven't been able to get to a point where I can reproduce the error. This is due to a few reasons:

I don't have a AMD GPU. So I'm just running my GTX 1050ti in Blender with the OpenCL testing mode.
The simulation takes up lots of RAM and I'm generally having a hard time getting it to work due to this.

I believe the issue is possibly caused by the scene exceeding the VRAM of the Radeon VII, but that card does have a lot of VRAM (16GB) so I'm not 100% sure.

Hopefully someone else can help you with sorting this issue.

I've tried playing around with this scene a few times on my computer and I haven't been able to get to a point where I can reproduce the error. This is due to a few reasons: 1. I don't have a AMD GPU. So I'm just running my GTX 1050ti in Blender with the OpenCL testing mode. 2. The simulation takes up lots of RAM and I'm generally having a hard time getting it to work due to this. I believe the issue is possibly caused by the scene exceeding the VRAM of the Radeon VII, but that card does have a lot of VRAM (16GB) so I'm not 100% sure. Hopefully someone else can help you with sorting this issue.

Gregor Katzschner commented

2020-05-07 14:04:28 +02:00

Yeah with less samples it is rendering correctly
And less light bounces

Yeah with less samples it is rendering correctly And less light bounces

Gregor Katzschner commented

2020-05-07 14:06:30 +02:00

It takes up to 6gb vram

Alaska commented

2020-05-07 14:18:15 +02:00

@GregorBoxer then I don't know what's causing the issue, I will leave the handling of this report and the fixing of the issue to the Blender developers.
I wish you luck in getting this sorted.

@GregorBoxer then I don't know what's causing the issue, I will leave the handling of this report and the fixing of the issue to the Blender developers. I wish you luck in getting this sorted.

Gregor Katzschner commented

2020-05-07 14:33:32 +02:00

Thanks @Alaska

Gregor Katzschner commented

2020-05-07 14:44:12 +02:00

I could render on the cpu but it would take hours

Lowerd the samples and lightbounces and then it runs (but thats not what i want) so the render takes under 3min and with my cpu an hour and 12min

I could render on the cpu but it would take hours Lowerd the samples and lightbounces and then it runs (but thats not what i want) so the render takes under 3min and with my cpu an hour and 12min

Richard Antalik commented

2020-06-16 20:43:38 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-06-16 20:43:38 +02:00

With recent build I got crash when I tried to bake noise.

This file is very complex however. @GregorBoxer is it possible to reduce file complexity(or time it takes to test bug like baking only 1 frame)?

With recent build I got crash when I tried to bake noise. This file is very complex however. @GregorBoxer is it possible to reduce file complexity(or time it takes to test bug like baking only 1 frame)?

Richard Antalik commented

2020-11-26 20:47:05 +01:00

@GregorBoxer I am looking at older reports, is this still an issue? Or have anything changed?

Ankit Meel commented

2021-04-18 12:19:26 +02:00

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

Ankit Meel closed this issue

2021-04-18 12:19:26 +02:00

Ankit Meel commented

2021-04-18 12:19:26 +02:00

Tried to redo on b9207fb43d, macOS 10.14, Intel HD 6000. No freezes.

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 report with the required information.

Tried to redo on b9207fb43d6fb55b83ee25263a3963c8c736f876, macOS 10.14, Intel HD 6000. No freezes. 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 report with the required information.

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RadeonVII Cycles render freezes on complex volumetric scenes #76489