Blender crashes in editor preview mode, but not in rendering #46960

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Peter Boos · 2015-12-12T17:56:50+01:00

Peter Boos commented

2015-12-12 17:56:50 +01:00

System Information
Windows 10, Nividea 630M.

Blender Version
Broken: 2.76 dde4fc6
I now think this never worked.

Short description of error
Using the demo Barcelona blend file.
Set my render engine to GPU
And then turning on render preview in edit mode, then Blender Crashes with a TDR has been detected.
Meaning an Error that the GPU timeouts on responding back to the system.

Strangely though .. rendering the scene F12 (that's not the preview mode), works fine.
Also if i Enable progressive render mode to do a final render it works fine too.
I thought not all effects are in preview mode, so it should render render more lightweight, but apparently its not.
I'm suggesting maybe its an idea to have preview mode work in tile chunks too, or in a progressive like mode.

I think the crashing happens not upon uploading the model to the GPU, from the looks of it, 1 preview cycle is rendered (but even with setting preview to 1) it still crashes.

Exact steps for others to reproduce the error
Simple barcelona-paviloen demo scene, and a low end graphics card,

notes
(1) i first thought this never happened in older versions, but i was wrong, my own project simply got bigger
(2) This is not something critical to me, i dont depend on it, workaround is to use CPU i7 for larger blend files.

(who with latest updates seams to speed beat gpu again)
(they're speed is about roughly the same, depends on build).

**System Information** Windows 10, Nividea 630M. **Blender Version** Broken: 2.76 dde4fc6 I now think this never worked. **Short description of error** Using the demo Barcelona blend file. Set my render engine to GPU And then turning on render preview in edit mode, then Blender Crashes with a TDR has been detected. Meaning an Error that the GPU timeouts on responding back to the system. Strangely though .. rendering the scene F12 (that's not the preview mode), works fine. Also if i Enable progressive render mode to do a final render it works fine too. I thought not all effects are in preview mode, so it should render render more lightweight, but apparently its not. I'm suggesting maybe its an idea to have preview mode work in tile chunks too, or in a progressive like mode. I think the crashing happens not upon uploading the model to the GPU, from the looks of it, 1 preview cycle is rendered (but even with setting preview to 1) it still crashes. **Exact steps for others to reproduce the error** Simple barcelona-paviloen demo scene, and a low end graphics card, notes (1) i first thought this never happened in older versions, but i was wrong, my own project simply got bigger (2) This is not something critical to me, i dont depend on it, workaround is to use CPU i7 for larger blend files. (who with latest updates seams to speed beat gpu again) (they're speed is about roughly the same, depends on build).

Peter Boos commented

2015-12-12 17:56:50 +01:00

Changed status to: 'Open'

Peter Boos commented

2015-12-12 17:56:50 +01:00

Added subscriber: @PeterBoos

Bastien Montagne commented

2015-12-13 11:32:02 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2015-12-13 11:32:02 +01:00

Will let Cycles guys decide, but pretty sure it’s no bug here, 630m is not really suited for GPU rendering anyway…

Sergey Sharybin was assigned by Bastien Montagne

2015-12-13 11:32:38 +01:00

Bastien Montagne commented

2015-12-13 11:32:38 +01:00

Added subscribers: @MartijnBerger, @ThomasDinges

Peter Boos commented

2015-12-13 14:25:47 +01:00

Well it has no problem to do the BMW speed tests
And lots of other work i do too, but yes i know cannt update the gpu of a laptop and its not the fastest gpu
Depending on blender build, the 630M can outperform the laptop octocore i7 2.3Ghz
if the drawing of the edit viewport where to be handled as suggested it might work .

Well it has no problem to do the BMW speed tests And lots of other work i do too, but yes i know cannt update the gpu of a laptop and its not the fastest gpu Depending on blender build, the 630M can outperform the laptop octocore i7 2.3Ghz if the drawing of the edit viewport where to be handled as suggested it might work .

Sergey Sharybin commented

2015-12-14 17:56:08 +01:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2015-12-14 17:56:08 +01:00

Sergey Sharybin commented

2015-12-14 17:56:08 +01:00

This is just an additional timeout which Windows puts onto the GPU driver -- it has to give control back to the system in some specified timelimit. The reasons why this is happening for the viewport only are:

Viewport uses dynamic BVH which is slower to traverse
Tile size for the viewport is fixed and likely bigger than for the final render
Viewport will do some extra OpenGL stuff like, which could stress timings a bit more than final render.

Thing is, you'll tun into such timeouts sooner than later with a complex enough scene so would not really consider this a bug. The following link might help you https://blender.org/manual/render/cycles/gpu_rendering.html#the-nvidia-opengl-driver-lost-connection-with-the-display-driver

Would not really consider this a bug, it's just some specifics of how GPU compute works. Thanks for the report anyway.

This is just an additional timeout which Windows puts onto the GPU driver -- it has to give control back to the system in some specified timelimit. The reasons why this is happening for the viewport only are: - Viewport uses dynamic BVH which is slower to traverse - Tile size for the viewport is fixed and likely bigger than for the final render - Viewport will do some extra OpenGL stuff like, which could stress timings a bit more than final render. Thing is, you'll tun into such timeouts sooner than later with a complex enough scene so would not really consider this a bug. The following link might help you https://blender.org/manual/render/cycles/gpu_rendering.html#the-nvidia-opengl-driver-lost-connection-with-the-display-driver Would not really consider this a bug, it's just some specifics of how GPU compute works. Thanks for the report anyway.

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Blender crashes in editor preview mode, but not in rendering #46960