Maniphest T68634

Blender 2.80 GUI disappears during Cycles render with two GPU
Closed, Archived
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Assigned To
Richard Antalik (ISS)
Authored By
Rainer Osselmann (RainerO)
Aug 14 2019, 10:06 AM
Tags
  • BF Blender
  • Cycles
Subscribers
Bastien Montagne (mont29)
Brecht Van Lommel (brecht)
Rainer Osselmann (RainerO)
Richard Antalik (ISS)
William Reynish (billreynish)

Description

System Information
Operating system: Windows 10
Graphics card: NVIdia Quadro M4000 (2x)

Blender Version
Broken: 2.80 all Versions since i started tests - 2.79 Dayli Builds (i think it came with support of rendering GPU and CPU together)
Worked: 2.79b official

Short description of error
Rendering with Cycles and both GPU's activated stopped Blender GUI without a message

Exact steps for others to reproduce the error
Just render a Scene with some Objects - GUI will disappear during rendering or shortly after the rendering. Rendering same Scene without GUI works fine and fast.

20009007928.pdp.blend8 MBDownload

Event Timeline

Rainer Osselmann (RainerO) created this task.Aug 14 2019, 10:06 AM
William Reynish (billreynish) added a subscriber: William Reynish (billreynish).Aug 14 2019, 10:47 AM

I somehow doubt that you mean Blender 1.8, which was released in year 2000, 19 years ago. Especially since it didn't include Cycles at all.

Rainer Osselmann (RainerO) added a comment.Aug 14 2019, 10:52 AM

oppps sorry should be 2.89 :-(

Bastien Montagne (mont29) renamed this task from Blender 1.80 GUI disappears during Cycles render with two GPU to Blender 2.80 GUI disappears during Cycles render with two GPU.Aug 14 2019, 11:21 AM
Bastien Montagne (mont29) updated the task description.
Bastien Montagne (mont29) added a project: Cycles.
Bastien Montagne (mont29) lowered the priority of this task from 90 to 30.Aug 14 2019, 11:24 AM
Bastien Montagne (mont29) added subscribers: Brecht Van Lommel (brecht), Bastien Montagne (mont29).

@Brecht Van Lommel (brecht) might know more here? Not sure we have that kind of config here to test it though...

In the mean time, please ensure that your drivers are fully up to date, and please try to start blender from a console with --debug-cycles option, and report here any error you should get.

Rainer Osselmann (RainerO) added a comment.Aug 14 2019, 12:24 PM

Hi,

strange.. starting "blender --debug-cycles" Blender disappears again and the last i saw in the console window was "CUDA ERROR".
Then i used
"blender --debug-cycles --python-expr "import bpy; bpy.ops.wm.sysinfo(filepath=r'%temp%\blender\debug_logs\blender_system_info.txt')" > "%temp%\blender\debug_logs\blender_debug_output.txt" 2>&1 < %0 "
rendered withou an error...
I will do further testing, in the meantime her are the logs.

blender_system_info_2GPU_OK.txt26 KBDownload

blender_debug_output_2GPU_OK.txt263 KBDownload

Rainer Osselmann (RainerO) added a comment.Aug 14 2019, 1:00 PM

Ok, got it now - first rendering needed about 4 minutes (in debug mode, against ca. 40 seconds without) and completed,
then 2nd try with render write still finished with a cuda error - seems to be something like an timing issue - btw rendering in GUI with only one GPU aktivated works fine.

blender_debug_output.txt283 KBDownload

Bastien Montagne (mont29) raised the priority of this task from 30 to 80.Aug 27 2019, 12:35 PM
Richard Antalik (ISS) changed the task status from Needs Information from Developers to Needs Information from User.Jan 7 2020, 8:42 PM
Richard Antalik (ISS) added a subscriber: Richard Antalik (ISS).

@Rainer Osselmann (RainerO) Is this still an issue with latest build? https://builder.blender.org/download/

Rainer Osselmann (RainerO) added a comment.Jan 9 2020, 12:37 PM

Hi,

1st Test with V 2.8.2: Rendering with 2 GPU on an existing Blend file works – but after rendering in File Menu “Search Missing Files” Blender disappears.

Mit freundlichen Grüßen aus dem Allgäu

Rainer Osselmann

Richard Antalik (ISS) added a comment.Jan 9 2020, 1:03 PM
In T68634#844832, @Rainer Osselmann (RainerO) wrote:

Hi,

1st Test with V 2.8.2: Rendering with 2 GPU on an existing Blend file works – but after rendering in File Menu “Search Missing Files” Blender disappears.

Just to clarify, if I understood correctly:

  • You can render provided file with 2 GPU's
  • Then you click on File > Search Missing Files
  • Blender UI dissapears (it is still running in task manager)

Is that correct?

Rainer Osselmann (RainerO) added a comment.Jan 9 2020, 1:31 PM

Not realy - Blender was not in Taskmanager any longer

Now i did a 2nd test - rendering "freezes" at 11 from 12 tiles,(in Render Window) but time goes on - clicking "X" in Renderwindow also kills Blender ( not in Taskmanager any longer).
I'll try again :-)

Rainer Osselmann (RainerO) added a comment.Jan 9 2020, 1:55 PM

So - now i did Find missing Files 1rst, than saved the Blendfile and rendered several times with different samples - works fine :-)

Richard Antalik (ISS) closed this task as Archived.Jan 19 2020, 11:37 PM
Richard Antalik (ISS) claimed this task.

Thanks for update.