[Pkg-opencl-devel] Bug#933732: causes piglit test failure

[Brice Videau]

Hello Simon,

The behavior seems the correct one (from the spec):

   . How will the ICD handle a `NULL` cl_platform_id?
+
--
RESOLVED: The ICD will by default choose the first enumerated platform as
the `NULL` platform.
The user can override this default by setting an environment variable
OPENCL_ICD_DEFAULT_PLATFORM to the desired platform index.
The API calls that deal with platforms will return CL_INVALID_PLATFORM if
the index is not between zero and (number of platforms - 1), both inclusive.
--

Brice

On 02/08/2019 10:27, Simon Richter wrote:
> Package: ocl-icd-libopencl1
> Version: 2.2.12-2
> Severity: minor
> Tags: upstream
>
> Hi,
>
> I have a single OpenCL ICD installed, and am running piglit tests against
> it. I get a test failure in the clGetExtensionFunctionForPlatform test,
> which expects NULL to be returned when the platform parameter passed is
> NULL. The implementation in ocl-icd does
>
> 	platform=selectPlatformID(platform);
>
> which selects the platform if only one is available, causing the test to
> fail.
>
> If that is indeed correct behaviour according to the spec, then the
> testsuite is wrong, but as far as I've understood it, this function should
> not fall back to the default platform if the parameter that is passed is
> NULL.
>
>      Simon
>
> -- System Information:
> Debian Release: 10.0
>     APT prefers stable
>     APT policy: (990, 'stable'), (500, 'unstable')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 4.9.0-9-amd64 (SMP w/32 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: sysvinit (via /sbin/init)
>
> Versions of packages ocl-icd-libopencl1 depends on:
> ii  libc6  2.28-10
>
> ocl-icd-libopencl1 recommends no packages.
>
> Versions of packages ocl-icd-libopencl1 suggests:
> pn  opencl-icd  <none>
>
> -- no debconf information
>
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