Cycles gets stuck rendering final tile at 100% CPU #43562

New Issue

Caleb · 2015-02-04T14:52:05+01:00

Caleb commented

2015-02-04 14:52:05 +01:00

System Information
Operating system and graphics card

Blender Version
Broken: 2.73a bbf09d9

Short description of error
Cycles gets stuck rendering the final tile of this blend file , using 100% CPU. This only seems to happen above a certain sample count; when using a low sample count such as 10 it does not occur.

Exact steps for others to reproduce the error
Open the linked .blend file and render it.

**System Information** Operating system and graphics card **Blender Version** Broken: 2.73a bbf09d9 **Short description of error** Cycles gets stuck rendering the final tile of [this blend file ](https://dl.dropboxusercontent.com/u/3760757/test.blend), using 100% CPU. This only seems to happen above a certain sample count; when using a low sample count such as 10 it does not occur. **Exact steps for others to reproduce the error** Open the linked .blend file and render it.

Caleb commented

2015-02-04 14:52:05 +01:00

Changed status to: 'Open'

Sebastian Koenig was assigned by Caleb

2015-02-04 14:52:05 +01:00

Caleb commented

2015-02-04 14:52:05 +01:00

Added subscriber: @comcal116

Sebastian Koenig was unassigned by Julian Eisel

2015-02-04 14:55:13 +01:00

Sergey Sharybin was assigned by Julian Eisel

2015-02-04 14:55:13 +01:00

Julian Eisel commented

2015-02-04 14:55:13 +01:00

Added subscribers: @sebastian_k, @JulianEisel

Julian Eisel commented

2015-02-04 14:55:13 +01:00

Assigning to sergey as requested on IRC

Caleb commented

2015-02-04 15:08:32 +01:00

Appears to be related to volumetrics, as disabling them causes the render to complete successfully. I've also tested this on OS X and Windows, so it doesn't appear to be a platform-specific issue.

ronan ducluzeau commented

2015-02-04 15:58:15 +01:00

Added subscriber: @zeauro

ronan ducluzeau commented

2015-02-04 15:58:15 +01:00

It looks like a problematic geometry. Disabling last bevel modifier is sufficient to render.

Aaron Carlisle commented

2015-02-04 16:00:44 +01:00

Added subscriber: @Blendify

Aaron Carlisle commented

2015-02-04 17:08:13 +01:00

Please fill out the information on your computer

GPU or CPU rendering all this is need to help with this bug

I am not able to reproduce when rendering on CPU

Please fill out the information on your computer GPU or CPU rendering all this is need to help with this bug I am not able to reproduce when rendering on CPU

Caleb commented

2015-02-04 17:11:52 +01:00

On one machine I tested I was using an Intel i7 3770K and on another an Intel i5 4288U.

Aaron Carlisle commented

2015-02-04 17:13:23 +01:00

so both are rendering on cpu

how long about is it getting "Stuck"

so both are rendering on cpu how long about is it getting "Stuck"

Caleb commented

2015-02-04 17:15:26 +01:00

Forever - the last tile never finishes rendering and uses 100% CPU for the thread rendering the tile.

Aaron Carlisle commented

2015-02-04 17:25:51 +01:00

well i have completed the render could you try changing these settings

Auto detect threads instead of fixed
the order of rendering tiles
and what happens in the view port
also what GPU are you using

well i have completed the render could you try changing these settings 1. Auto detect threads instead of fixed 2. the order of rendering tiles 3. and what happens in the view port 4. also what GPU are you using

Aaron Carlisle commented

2015-02-04 17:26:05 +01:00

well i have completed the render could you try changing these settings

Auto detect threads instead of fixed
the order of rendering tiles
and what happens in the view port
also what GPU are you using

well i have completed the render could you try changing these settings 1. Auto detect threads instead of fixed 2. the order of rendering tiles 3. and what happens in the view port 4. also what GPU are you using

Caleb commented

2015-02-04 17:41:28 +01:00

Same result; in fact it doesn't matter how many threads I use.
Tried 'Top to Bottom' - same result. It appears to get stuck on the same tile as when I use 'Center'.
In the viewport it gets stuck rendering the 6th sample and can't be stopped. If I make the viewport smaller, the number of samples I can render without freezing increases from 6 to about 10 or so.
This shouldn't be relevant - but I am using an NVIDIA GTX 460 on my 3770K system and the integrated GPU (Intel Iris 5100) on the 4288U.

1. Same result; in fact it doesn't matter how many threads I use. 2. Tried 'Top to Bottom' - same result. It appears to get stuck on the same tile as when I use 'Center'. 3. In the viewport it gets stuck rendering the 6th sample and can't be stopped. If I make the viewport smaller, the number of samples I can render without freezing increases from 6 to about 10 or so. 4. This shouldn't be relevant - but I am using an NVIDIA GTX 460 on my 3770K system and the integrated GPU (Intel Iris 5100) on the 4288U.

Aaron Carlisle commented

2015-02-04 17:49:12 +01:00

Have tried rendering on cpu and gpu not at the same time of course

The render does not get stuck but the view does get stuck saying it is "paused"

is that a feature?

Have tried rendering on cpu and gpu not at the same time of course The render does not get stuck but the view does get stuck saying it is "paused" is that a feature?

Caleb commented

2015-02-04 18:01:17 +01:00

No, the viewport wasn't paused when I tested it; that's only how the file was saved. I can't render the scene on my GPU since it uses too much memory for my card. It'd be great if someone could test this on a GPU with more VRAM.

@zeauro was able to reproduce the issue above, so I don't think it's just my setup.

No, the viewport wasn't paused when I tested it; that's only how the file was saved. I can't render the scene on my GPU since it uses too much memory for my card. It'd be great if someone could test this on a GPU with more VRAM. @zeauro was able to reproduce the issue above, so I don't think it's just my setup.

Aaron Carlisle commented

2015-02-04 18:35:31 +01:00

can confirm but it happen when i tried to abort the render

ronan ducluzeau commented

2015-02-04 19:00:13 +01:00

If it can help, my CPU is an i7 4770K. I am under ubuntu 14.04 64 bits.

It is weird that it is not the same tile that freeze when I use official 2.73a and master 810c7ee.

If it can help, my CPU is an i7 4770K. I am under ubuntu 14.04 64 bits. It is weird that it is not the same tile that freeze when I use official 2.73a and master 810c7ee.

blender-admin commented

2015-02-05 12:10:50 +01:00

This issue was referenced by 25f33e058a

This issue was referenced by 25f33e058a7b57d4f5964609b29b3f0834b3e6b6

Sergey Sharybin commented

2015-02-05 12:19:06 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2015-02-05 12:19:06 +01:00

Sergey Sharybin commented

2015-02-05 12:19:06 +01:00

Closed by commit 25f33e058a.