Kernel loading crash #45330

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Federico · 2015-07-05T21:02:57+02:00

Federico commented

2015-07-05 21:02:57 +02:00

Windows 8.1, AMD HD 7870

Broken: 2.75
Worked: 2.75 RC2

Blender 2.75 crashes at kernel loading time when I try to make a Cycles GPU render. But Blender 2.75 RC2 succeed to load and render.

Create a new project, select cycles render and presse render button.

Windows 8.1, AMD HD 7870 Broken: 2.75 Worked: 2.75 RC2 Blender 2.75 crashes at kernel loading time when I try to make a Cycles GPU render. But Blender 2.75 RC2 succeed to load and render. Create a new project, select cycles render and presse render button.

Federico commented

2015-07-05 21:02:57 +02:00

Changed status to: 'Open'

Federico self-assigned this 2015-07-05 21:02:57 +02:00

Federico commented

2015-07-05 21:02:57 +02:00

Added subscriber: @JurassicMark

Federico was unassigned by Aaron Carlisle

2015-07-06 01:46:36 +02:00

Aaron Carlisle commented

2015-07-06 01:46:36 +02:00

Added subscriber: @Blendify

Sergey Sharybin commented

2015-07-06 12:11:26 +02:00

Added subscriber: @Sergey

Sergey Sharybin commented

2015-07-06 12:11:26 +02:00

it's not that much changed in the kernel between rc2 and final release.

Please:

Confirm that 2.75-rc2 still works fine for you
Attach output of blender run with --debug-cycles command line argument

it's not that much changed in the kernel between rc2 and final release. Please: - Confirm that 2.75-rc2 still works fine for you - Attach output of blender run with --debug-cycles command line argument

Federico commented

2015-07-07 02:38:45 +02:00

I confirm that Blender 2.75 RC2" works fine rendering meshes, but render smoke domains as black cubes.
Please, be more specific with your second request, I don't understand what I have to do. I'm not PRO.

I confirm that Blender 2.75 RC2" works fine rendering meshes, but render smoke domains as black cubes. Please, be more specific with your second request, I don't understand what I have to do. I'm not PRO.

Aaron Carlisle commented

2015-07-07 03:57:18 +02:00

Smoke and fire are not supported please see http://blender.org/manual/render/cycles/features.html

Federico commented

2015-07-07 09:29:27 +02:00

Sorry I wash rushin, my last comment was wrong. I meant "I confirm that Blender 2.75 RC2 (NOT 2.75) works fine rendering meshes, but render smoke domains as black cubes.
Please, be more specific with your second request, I don't understand what I have to do. I'm not PRO."
Blender 2.75 DOESN'T WORK EVER, 2.75 RC2 fails just smoke domain.

Sorry I wash rushin, my last comment was wrong. I meant "I confirm that Blender 2.75 RC2 (NOT 2.75) works fine rendering meshes, but render smoke domains as black cubes. Please, be more specific with your second request, I don't understand what I have to do. I'm not PRO." Blender 2.75 DOESN'T WORK EVER, 2.75 RC2 fails just smoke domain.

Aaron Carlisle commented

2015-07-07 18:49:07 +02:00

Go to the folder that contains blender.exe then open Command Prompt by under the file menu in the file explore. Then type blender.exe --debug-cycles or copy and paste. Hope this helps

Go to the folder that contains `blender.exe` then open Command Prompt by under the file menu in the file explore. Then type `blender.exe --debug-cycles` or copy and paste. Hope this helps

Federico commented

2015-07-08 01:49:06 +02:00

Ok, all clear. I hope these can help. 2.75_RC2_Run.txt

2.75_Run.txt

Ok, all clear. I hope these can help. [2.75_RC2_Run.txt](https://archive.blender.org/developer/F204494/2.75_RC2_Run.txt) [2.75_Run.txt](https://archive.blender.org/developer/F204495/2.75_Run.txt)

Sergey Sharybin commented

2015-07-08 12:11:31 +02:00

Ok, apparently rc2 was using megakernel for you (which was wrong, because it's split kernel which sohuld be used for AMD now),

Can you attach system-info.txt geenrated by Help -> System Info from both rc2 and 2.75 release?

Ok, apparently rc2 was using megakernel for you (which was wrong, because it's split kernel which sohuld be used for AMD now), Can you attach system-info.txt geenrated by `Help -> System Info` from both rc2 and 2.75 release?

Federico commented

2015-07-08 15:39:34 +02:00

Voilà. system-info-2.75.txt

system-info-2.75_RC2.txt

Voilà. [system-info-2.75.txt](https://archive.blender.org/developer/F204790/system-info-2.75.txt) [system-info-2.75_RC2.txt](https://archive.blender.org/developer/F204791/system-info-2.75_RC2.txt)

Bastien Montagne commented

2015-07-15 09:22:09 +02:00

Added subscriber: @mont29

Sergey Sharybin commented

2015-07-18 16:59:10 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2015-07-18 16:59:10 +02:00

Sergey Sharybin self-assigned this 2015-07-18 16:59:10 +02:00

Sergey Sharybin commented

2015-07-18 16:59:10 +02:00

It's not really a Blender bug, it's just driver not capable of building some of the kernels.

I've committed some workarounds which are related on disabling code in kernel which is not needed to render scene, so simplier scenes should be working fine now. Hopefully. Those fixes are included into the latest builds from https://builder.blender.org/download/

We're also collecting such reports in there http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/OpenCL to use it as a reference for AMD developers once they'll be working on solving their driver.

So thanks for the report, but it's not much else we can do here.

It's not really a Blender bug, it's just driver not capable of building some of the kernels. I've committed some workarounds which are related on disabling code in kernel which is not needed to render scene, so simplier scenes should be working fine now. Hopefully. Those fixes are included into the latest builds from https://builder.blender.org/download/ We're also collecting such reports in there http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/OpenCL to use it as a reference for AMD developers once they'll be working on solving their driver. So thanks for the report, but it's not much else we can do here.

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Kernel loading crash #45330