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Maniphest T38712

Cycles render is not updating
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Description

System Information
Operating system and graphics card
Ubuntu 13.10 64
Blender Version
Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: (optional)
2.69 official
Short description of error
hitting f12 starts cycles render, but doesnot update the renderwindow until tile is finished
Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps
any startup with cube will do...

Revisions and Commits

rB Blender
rB6b1a4fc66ef4 Cycle CUDA: revert the f1aeb2ccf4 and 84f958754 busywait fixes for now.
rBAC Blender Add-ons Contrib
rBAC6b1a4fc66ef4 Cycle CUDA: revert the f1aeb2ccf4 and 84f958754 busywait fixes for now.

Event Timeline

Karsten Bitter (tencars) created this task.Feb 18 2014, 11:50 PM
Karsten Bitter (tencars) raised the priority of this task from to 90.
Karsten Bitter (tencars) updated the task description. (Show Details)
Karsten Bitter (tencars) added a project: BF Blender.
Karsten Bitter (tencars) edited a custom field.
Karsten Bitter (tencars) added a subscriber: Karsten Bitter (tencars).
Thomas Dinges (dingto) lowered the priority of this task from 90 to 30.Feb 19 2014, 12:47 AM
Thomas Dinges (dingto) added a subscriber: Thomas Dinges (dingto).

This is not enough information. I cannot reproduce such an error.
The currently rendered tiles update every second or so. Do you render with CPU or GPU?

Also please check with a build from builder.blender.org.

Karsten Bitter (tencars) added a comment.Feb 19 2014, 12:56 AM

Hi Thomas,

I use GPU GFORCE 580 gtx on Ubuntu.
I used a "daily build" yesterday and today, both same problem. Not in regular 2.69.
Tomorrow I will test on similar System (Ubuntu as well) but with 560 gtx ti.

thank you for your great work!
KB

Karsten Bitter (tencars) added a comment.Feb 19 2014, 12:58 AM

I just checked:

I used the build blender-2.69-688d098-linux-glibc211-x86_64.tar.bz2 from builder.blender.org.

regards,
kb

Karsten Bitter (tencars) added a comment.Feb 19 2014, 1:40 AM

Ok,

I just tried on the same Hardware (GFORCE 580gtx) but the windows 7 64bit Operating system:
todays windows version of builder.blender.org same behaviour: GPU rendering does not update, cpu does.

best regards,
kb

Thomas Dinges (dingto) raised the priority of this task from 30 to 50.Feb 19 2014, 1:46 AM

Thanks for the additional info. Can confirm it now with GPU.

It updates though, even before a tile is finished. If I render the bmw scene with 500 samples and 256x256 tile size, I get updates about every 150 samples. So I guess the updates are just not as frequent as before.

Guys, is that intentional?

Thomas Dinges (dingto) added subscribers: Martijn Berger (juicyfruit), Brecht Van Lommel (brecht).Feb 19 2014, 1:46 AM
Martijn Berger (juicyfruit) added a comment.Feb 19 2014, 7:53 AM

@Thomas Dinges (dingto). This is a direct result of my last fix to device_cuda.

It can happen depending on the driver and the exact timing that almost all path_trace jobs get pushed into the Cuda event queue it seems.
I am not sure how often we want to update but I am pretty sure I can fix it to update more often.

Ill look into this tonight.

Lukas Tönne (lukastoenne) assigned this task to Martijn Berger (juicyfruit).Feb 19 2014, 4:00 PM
Lukas Tönne (lukastoenne) added a subscriber: Lukas Tönne (lukastoenne).
Brecht Van Lommel (brecht) edited this Maniphest Task.Feb 19 2014, 4:17 PM
Thomas Dinges (dingto) changed the task status from Unknown Status to Resolved.Feb 19 2014, 6:36 PM

This is solved in newer builds. Thanks for the report.

Karsten Bitter (tencars) added a comment.Feb 19 2014, 10:40 PM

Welcome,

Thank you for the excellent work to all you guys!

best regards,
kb

Brecht Van Lommel (brecht) edited this Maniphest Task.May 12 2014, 4:41 PM