Move nvidia.icd to /usr/share/OpenCL/vendors ?

[sndirsch]

openSUSE Report -> https://bugzilla.suse.com/show_bug.cgi?id=1235084

nvidia-compute-G06 package installs 'nvidia.icd' below directory "/etc/OpenCL/vendors/"

However, mesa opencl implementation packages like rusticl or clover installs .icd file under "/usr/share/OpenCL/vendors".

When I run 'clinfo', it only detects nvidia platform. But, if I move .icd file of rusticl into "/etc/OpenCL/vendors", it detects both platform well.

My response:
Indeed /etc/OpenCL/vendors/ gets preferred. As workaround you can create symlinks from /etc/OpenCL/vendors/ to /usr/share/OpenCL/vendors or set OPENCL_VENDOR_PATH environment variable to /usr/share/OpenCL/vendors to see only the Mesa CL drivers.

@scaronni-nvidia Any opinion on that? Background: We patch ocl-icd,

Sat Aug 22 16:49:25 UTC 2020 - Stefan Dirsch [email protected]

• n_UsrShare.patch
  • first try /etc/OpenCL/vendors, then /usr/share/OpenCL/vendors
    (boo#1173005, comment#8)
• supersedes configure option --enable-custom-vendordir

[scaronni-nvidia]

I think the patch on ocl-icd is not correct, as it should allow to source icd files from both locations, not just one replacing the other.

Having said that, /usr/share/OpenCL/vendors is not standard at all. In some distributions we also allow the Khronos OpenCL ICD Loader (https://github.com/KhronosGroup/OpenCL-ICD-Loader) as a valid package for providing libOpenCL.so.1, and that does not support /usr/share/OpenCL/vendors as a valid location.

If this is what SUSE uses as the standard I think it's fine, but the patch needs to be udpated. If you want to be 100% compliant you should keep on using /etc/OpenCL/vendors or update the patch to allow both locations and submit a patch to the Khronos ICD Loader.

[sndirsch]

Thanks a lot for the input @scaronni-nvidia !

The background is explained here:

https://en.opensuse.org/openSUSE:Packaging_UsrEtc

I opened a bug for Mesa and ocl-icd to address that.

https://bugzilla.suse.com/show_bug.cgi?id=1173005

Later I decide to change location from /usr/etc/OpenCL/vendors to /usr/share/OpenCL/vendors. I can't remember why.

https://bugzilla.suse.com/show_bug.cgi?id=1173005#c5