Re: AMD OpenCL support

[Linux-Fan]

piorunz writes:

On 17/10/2021 09:00, didier gaumet wrote:

[...]

Yes I have that mesa version of OpenCL installed. Unfortunately, this
version is too old and not recognized. I need OpenCL 1.2 at least I
think. clinfo says, among many other things:
  Device Version                                  OpenCL 1.1 Mesa 20.3.5
  Driver Version                                  20.3.5
  Device OpenCL C Version                         OpenCL C 1.1

Perhaps your claim of not having OpenCL support is erroneous and what
happens actually is you have uncomplete/unsufficent support for your
use case: a typical example is Darktable not having OpenCL image
support, this requiring more recent OpenCL implementation that the Mesa
one.

Then you would probably have to either:
- revert to use the proprietary amdgpu-pro driver (including an AMD
ICD) instead of the free amdgpu one

https://www.amd.com/en/support/kb/faq/amdgpu-installation

This procedure requires downloading .deb drivers from
https://support.amd.com/en-us/download. Only distros supported are
Ubuntu 18.04.5 HWE, Ubuntu 20.04.3. They will most likely fail in Debian.

[...]

Hello,

I happened to have some issues wrt. a bug similar to this:
https://bugs.freedesktop.org/show_bug.cgi?id=111481





Excerpt from clinfo:

~~~
 Platform Name:                          AMD Accelerated Parallel Processing
Number of devices:                               1
 Device Type:                                    CL_DEVICE_TYPE_GPU
 Device OpenCL C version:                        OpenCL C 2.0
 Driver version:                                 3261.0 (HSA1.1,LC)
 Profile:                                        FULL_PROFILE
 Version:                                        OpenCL 2.0
~~~

btw. I do not seem to have a `Device Version` string in there?

~~~
# dpkg -l | grep opencl | cut -c -90

~~~

To summarize: It might be worth trying the Ubuntu-.debs out on Debian.
Although its not a "clean" solution by any means, it might "just work"?

HTH
Linux-Fan

öö

There, the suggested fix is to switch to amdgpu-pro (which seems to remedy the issue but not entirely...) which lead me to try the `.deb` files from AMD. I downloaded `amdgpu-pro-21.20-1292797-ubuntu-20.04.tar.xz` and it seems to have installed just fine. As a result, I should be running the proprietary driver now and thus have OpenCL running -- I only ever tested it with a demo application, though... ii amdgpu-pro-rocr-opencl 21.20-1292797 ii ocl-icd-libopencl1:amd64 2.2.14-2 ii ocl-icd-libopencl1:i386 2.2.14-2 ii ocl-icd-libopencl1-amdgpu-pro:amd64 21.20-1292797 ii ocl-icd-libopencl1-amdgpu-pro-dev:amd64 21.20-1292797 ii ocl-icd-opencl-dev:amd64 2.2.14-2 ii opencl-base 1.2-4.4.0.117 ii opencl-c-headers 3.0~2020.12.18-1 ii opencl-clhpp-headers 3.0~2.0.13-1 ii opencl-headers 3.0~2020.12.18-1 ii opencl-intel-cpu 1.2-4.4.0.117 ii opencl-orca-amdgpu-pro-icd:amd64 21.20-1292797 ii opencl-rocr-amdgpu-pro:amd64 21.20-1292797 ii opencl-rocr-amdgpu-pro-dev:amd64 21.20-1292797

pgpyhukeY7BBf.pgp
Description: PGP signature