Bug#770588: Bug#769072: #769191, #770588: nvidia-opencl-icd breaking non-nvidia systems

[Frederico Rodrigues Abraham]

guys, sorry to ask, but there's no link: how to unsubscribe ?


On 23/11/2014 08:35, Rebecca N. Palmer wrote:
> Rebecca Palmerr wrote:
>> The only other [than pyopencl]
>> Depends or Recommends on opencl-icd in the current archive is bfgminer.
> Sorry...only ones found by "path:debian/control opencl-icd" in 
> sources.debian.net search (apt-cache rdepends doesn't work on virtual 
> packages), which evidently doesn't search non-free as it missed that 
> nvidia-libopencl1 Recommends: nvidia-opencl-icd.
>
> Nathaniel Smith wrote:
>> Looking through my apt history, it looks like the critical operation
>> that gave me nvidia stuff was the installation of libboost[-all-dev] 
>> (!?):
> libboost-all-dev Depends: libboost-mpi-dev Depends: 
> libboost-mpi1.55-dev Depends: libboost-mpi1.55.0 Depends: libhwloc5 
> Recommends: libhwloc-plugins, which at the time had Depends: 
> libopencl-1.1-1, a virtual package provided by (among other things) 
> nvidia-libopencl1, which Recommends: nvidia-opencl-icd.
>
> This has already been reported (#739409) and fixed: libhwloc-plugins 
> now Depends: ocl-icd-libopencl1 | libopencl-1.1-1.  However, cutting 
> the chain there doesn't remove nvidia-opencl-icd if already installed, 
> hence this bug.
>
> On 23/11/14 02:09, Andreas Beckmann wrote:
>> I don't know how seriously the missing libcuda1 breaks
>> nvidia-opencl-icd. I can see that this is being dlopen()ed, but at least
>> clinfo still reports something about the GPU. I don't have a better
>> testcase right now, suggestions welcome.
> If you want a quick "does OpenCL work" test, try
> python3 accuracy_speed_test.py
> (from 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=accuracy_speed_test.py;att=1;bug=768090 
> , Depends: python3-pyopencl, python3-scipy ).  (Note that some of 
> those tests are expected to give high/NaN errors because not all the 
> inputs used are valid for all the functions: for the present purpose 
> we're mainly looking for crashes/exceptions.)
>
> Given that we also don't want to break systems that are intentionally 
> using nvidia-opencl-icd, a better fix might be for whatever sets 
> nvidia as default graphics provider to only do so if the hardware is 
> present, but I don't know whether that's practical.
>