OpenCL build failure with NVIDIA GeForce GTX 980 Ti GPU #48972

New Issue

Rob-ART Morgan · 2016-07-29T18:08:24+02:00

Rob-ART Morgan commented

2016-07-29 18:08:24 +02:00

System Information
OS X 10.11.5, 2013 Mac Pro 8-core, Dual FirePro D700 internal GPUs, Single GTX 980 Ti in BizonBOX connected via Thunderbolt 2 port

Blender Version
Broken: 2.77a
Worked: (optional)

Short description of error
OpenCL build failure

Exact steps for others to reproduce the error
If the NVIDIA GeForce GTX 980 Ti is selected as CUDA device the scene renders normally, but build fails with OpenCL render selected. This GTX 980 Ti does support OpenCL because it is successfully used in OpenCL mode on other apps like DaVinci Resolve.

**System Information** OS X 10.11.5, 2013 Mac Pro 8-core, Dual FirePro [D700](https://archive.blender.org/developer/D700) internal GPUs, Single GTX 980 Ti in BizonBOX connected via Thunderbolt 2 port **Blender Version** Broken: 2.77a Worked: (optional) **Short description of error** OpenCL build failure **Exact steps for others to reproduce the error** If the NVIDIA GeForce GTX 980 Ti is selected as CUDA device the scene renders normally, but build fails with OpenCL render selected. This GTX 980 Ti does support OpenCL because it is successfully used in OpenCL mode on other apps like DaVinci Resolve.

Rob-ART Morgan self-assigned this 2016-07-29 18:08:24 +02:00

Rob-ART Morgan commented

2016-07-29 18:08:24 +02:00

Changed status to: 'Open'

Rob-ART Morgan commented

2016-07-29 18:08:24 +02:00

Added subscriber: @barefeats

Thomas Dinges commented

2016-07-29 18:12:54 +02:00

Added subscriber: @ThomasDinges

Thomas Dinges commented

2016-07-29 18:12:54 +02:00

There is no real point in using OpenCL on a nvidia card, as CUDA is usually faster and supports more features. I suspect the issue is the Apple driver here, which we cannot fix.

You can attach the error log if there is any (start Blender from the Terminal).

There is no real point in using OpenCL on a nvidia card, as CUDA is usually faster and supports more features. I suspect the issue is the Apple driver here, which we cannot fix. You can attach the error log if there is any (start Blender from the Terminal).

Rob-ART Morgan commented

2016-07-29 18:18:06 +02:00

Agree that CUDA is preferred for NVIDIA GPUs, but in my situation, I have two internal FirePro GPUs and one external GTX 980 Ti (in GPU expander). The only way to get Blender to render with all three is to designate all three as OpenCL devices.

This scenario works just fine with DaVinci Resolve when rendering GPU intensive Noise Reduction. Using all three provides a performance gain in that case.

Agree that CUDA is preferred for NVIDIA GPUs, but in my situation, I have two internal FirePro GPUs and one external GTX 980 Ti (in GPU expander). The only way to get Blender to render with all three is to designate all three as OpenCL devices. This scenario works just fine with DaVinci Resolve when rendering GPU intensive Noise Reduction. Using all three provides a performance gain in that case.

Thomas Dinges commented

2016-07-29 18:30:29 +02:00

I understand the issue. As suggested, you can try to start Blender from a Terminal and see if there is an error message. Also you may want to try a new build from builder.blender.org, 2.77 is pretty old by now, maybe the issue has been fixed (if on our side).

Rob-ART Morgan was unassigned by Bastien Montagne

2016-07-29 19:04:01 +02:00

Rob-ART Morgan commented

2016-07-30 01:51:45 +02:00

Hmm. I went to builder.blender.org and 2.77 is the latest build version. What am I missing?

Meanwhile, here is the error message that showed up when launched in Terminal:

Device init success
Compiling OpenCL kernel ...
Build flags:
OpenCL error (GeForce GTX 980 Ti): [CL_DEVICE_NOT_AVAILABLE] : OpenCL Error : Error: Build Program driver returned (10007)
OpenCL error (GeForce GTX 980 Ti): OpenCL Warning : clBuildProgram failed: could not build program for 0x1022700 (GeForce GTX 980 Ti) (err:-2)
OpenCL error (GeForce GTX 980 Ti): [CL_BUILD_ERROR] : OpenCL Build Error : Compiler build log:
Error getting function data from server

OpenCL kernel build output:
Error getting function data from server
OpenCL build failed: errors in console
Error: OpenCL build failed: errors in console

Hmm. I went to builder.blender.org and 2.77 is the latest build version. What am I missing? Meanwhile, here is the error message that showed up when launched in Terminal: Device init success Compiling OpenCL kernel ... Build flags: OpenCL error (GeForce GTX 980 Ti): [CL_DEVICE_NOT_AVAILABLE] : OpenCL Error : Error: Build Program driver returned (10007) OpenCL error (GeForce GTX 980 Ti): OpenCL Warning : clBuildProgram failed: could not build program for 0x1022700 (GeForce GTX 980 Ti) (err:-2) OpenCL error (GeForce GTX 980 Ti): [CL_BUILD_ERROR] : OpenCL Build Error : Compiler build log: Error getting function data from server OpenCL kernel build output: Error getting function data from server OpenCL build failed: errors in console Error: OpenCL build failed: errors in console

Denis commented

2016-08-11 05:53:10 +02:00

Added subscriber: @Denis-3

Denis commented

2016-08-11 05:53:10 +02:00

I need gtx 980ti OpenCl to work too, so what is the problem with that error?

Sergey Sharybin commented

2016-10-11 11:39:25 +02:00

Added subscriber: @Sergey

Sergey Sharybin commented

2016-10-11 11:39:25 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2016-10-11 11:39:25 +02:00

Sergey Sharybin self-assigned this 2016-10-11 11:39:25 +02:00

Sergey Sharybin commented

2016-10-11 11:39:25 +02:00

This is a bug in the compiler. It's possibly to try working something around in the code, but overall it is not officially supported configuration and fixing this will happen outside of the bug tracker.

Please also note that we are starting to push split kernel to a product level now (and as a side effect make all related code easier for maintenance) so that work should solve OpenCL errors on all platforms (or at least make them much easier to investigate).

This is a bug in the compiler. It's possibly to try working something around in the code, but overall it is not officially supported configuration and fixing this will happen outside of the bug tracker. Please also note that we are starting to push split kernel to a product level now (and as a side effect make all related code easier for maintenance) so that work should solve OpenCL errors on all platforms (or at least make them much easier to investigate).

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OpenCL build failure with NVIDIA GeForce GTX 980 Ti GPU #48972