CUDA ERROR Illegal address in cuCtXSynchronize(), line 1812 #56844

New Issue

Elison G. Bradley · 2018-09-19T17:11:51+02:00

Elison G. Bradley commented

2018-09-19 17:11:51 +02:00

System Information
Operating system and graphics card
Windows 10 64
Nvidia GTX 1080

Blender Version
Blender 2.8 Alpha 2 69aac13524
Blender 2.79.6 06fd94140c

When attempting to bake any texture of any size, Windows will throw a "Application has been blocked from accessing your GPU Hardware" error pop up, and the Console will throw a huge screen of various CUDA errors like the above.

Steps to Reproduce:

Load Blender with the provided .blend file Skunkworks.blend
Insure that the image texture node with an appropriate blank image texture is selected.
Insure that the Blender console is open to observe any error messages.
Press Bake.

Observered Result (10/10):

Blender will at the 3-5% progress point stop baking leaving a still blank image. Windows will show a pop up error stating that it stopped Blender from using the GPU hardware. The error console will show the error "CUDA ERROR Illegal address in cuCtXSynchronize(), line 1812" and display a large number of related CUDA error messages. See attached error log. CUDA ERROR LOG.txt

Expected Resulted:

Blender bakes the texture without issue.

Note: Issue does not occur on a different computer that also has a GTX 1080 and Windows 10. Issue does not occur on Blender 2.79b that can be downloaded on Blender's official website (But I really need that Bevel node...)

Note 2: Issue does not occur when in preview rendering mode, or when rendering a frame in active scene in 2.79.6

Note 3: Issue also does not occur when rendering in preview mode/realtime rendering using EEVEE in 2.8.

Edit / Addendum: Branched Path Tracing causes the issue to tentatively no longer occur.

Edit / Addendum 2: Branched Path Tracing will still cause the issue to occur depending on the settings, such as AA samples to 4 and Diffuse samples to 25, or AA to 1 and Diffuse to 100.

**System Information** Operating system and graphics card Windows 10 64 Nvidia GTX 1080 **Blender Version** Blender 2.8 Alpha 2 69aac135243 Blender 2.79.6 06fd94140cb When attempting to bake any texture of any size, Windows will throw a "Application has been blocked from accessing your GPU Hardware" error pop up, and the Console will throw a huge screen of various CUDA errors like the above. Steps to Reproduce: 1. Load Blender with the provided .blend file [Skunkworks.blend](https://archive.blender.org/developer/F4754583/Skunkworks.blend) 2. Insure that the image texture node with an appropriate blank image texture is selected. 3. Insure that the Blender console is open to observe any error messages. 4. Press Bake. Observered Result (10/10): - Blender will at the 3-5% progress point stop baking leaving a still blank image. Windows will show a pop up error stating that it stopped Blender from using the GPU hardware. The error console will show the error "CUDA ERROR Illegal address in cuCtXSynchronize(), line 1812" and display a large number of related CUDA error messages. See attached error log. [CUDA ERROR LOG.txt](https://archive.blender.org/developer/F4754637/CUDA_ERROR_LOG.txt) Expected Resulted: - Blender bakes the texture without issue. Note: Issue does not occur on a different computer that also has a GTX 1080 and Windows 10. Issue does not occur on Blender 2.79b that can be downloaded on Blender's official website (But I really need that Bevel node...) Note 2: Issue does not occur when in preview rendering mode, or when rendering a frame in active scene in 2.79.6 Note 3: Issue also does not occur when rendering in preview mode/realtime rendering using EEVEE in 2.8. Edit / Addendum: Branched Path Tracing causes the issue to tentatively no longer occur. Edit / Addendum 2: Branched Path Tracing will still cause the issue to occur depending on the settings, such as AA samples to 4 and Diffuse samples to 25, or AA to 1 and Diffuse to 100.

Elison G. Bradley commented

2018-09-19 17:11:51 +02:00

Added subscriber: @ElisonRSalazar

Bastien Montagne commented

2018-09-20 08:50:57 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2018-09-20 08:50:57 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2018-09-20 08:50:57 +02:00

Bastien Montagne self-assigned this 2018-09-20 08:50:57 +02:00

Bastien Montagne commented

2018-09-20 08:50:57 +02:00

This is an intrinsic limitation of CUDA which puts a timelimit on the kernels when using display device for compute. See also the documentation.

This is an intrinsic limitation of CUDA which puts a timelimit on the kernels when using display device for compute. See also [the documentation](https://docs.blender.org/manual/en/dev/render/cycles/gpu_rendering.html#the-nvidia-opengl-driver-lost-connection-with-the-display-driver).

Elison G. Bradley commented

2018-09-20 14:33:51 +02:00

What do you mean by that because this issue completely prevents me from using Baking when using 2.79.6 or 2.8 but not in 2.79B, and doesn't occur on a different machine that also has a Nvidia 1080. In fact the documentation you linked me says nothing at all about my issue. The problem has nothing to do with losing connection as that doesn't describe the windows error pop up which is just a symptom. I'm pretty sure "This application has been BLOCKED from accessing the GPU Hardware" and ""The NVIDIA OpenGL driver lost connection with the display driver" are unrelated error messages.

It doesn't make sense that a GTX 1080 can't bake a simple 1024 by 1024 pixel texture, that's not an inherent limitation, that's clearly a bug.

To reiterate, hitting the bake button on any sized texture in Blender 2.79.6 and 2.8 in even the simplest of scenery instantly stops baking and prints the error message in the title of the message: "CUDA ERROR Illegal address in cuCtXSynchronize(), line 1812" followed by being unable to enter render mode at all until I restart Blender. This is clearly not supposed to be typical.

What do you mean by that because this issue completely prevents me from using Baking when using 2.79.6 or 2.8 but not in 2.79B, and doesn't occur on a different machine that also has a Nvidia 1080. In fact the documentation you linked me says nothing at all about my issue. The problem has nothing to do with losing connection as that doesn't describe the windows error pop up which is just a symptom. I'm pretty sure "This application has been BLOCKED from accessing the GPU Hardware" and ""The NVIDIA OpenGL driver lost connection with the display driver" are unrelated error messages. It doesn't make sense that a GTX 1080 can't bake a simple 1024 by 1024 pixel texture, that's not an inherent limitation, that's clearly a bug. To reiterate, hitting the bake button on any sized texture in Blender 2.79.6 and 2.8 in even the simplest of scenery instantly stops baking and prints the error message in the title of the message: "CUDA ERROR Illegal address in cuCtXSynchronize(), line 1812" followed by being unable to enter render mode at all until I restart Blender. This is clearly not supposed to be typical.

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CUDA ERROR Illegal address in cuCtXSynchronize(), line 1812 #56844