Am 28.04.2014 11:26, schrieb Pascal Obry:
> Since I've upgraded to Nvidia 331.67 I cannot get OpenCL to work. I
> have run darktable with -d open and got:
>
> [opencl_init] opencl related configuration options:
> [opencl_init]
> [opencl_init] opencl: 1
> [opencl_init] opencl_library: ''
> [opencl_init] opencl_memory_requirement: 768
> [opencl_init] opencl_memory_headroom: 300
> [opencl_init] opencl_device_priority: '*/!0,*/*/*'
> [opencl_init] opencl_size_roundup: 16
> [opencl_init] opencl_async_pixelpipe: 1
> [opencl_init] opencl_synch_cache: 0
> [opencl_init] opencl_number_event_handles: 100
> [opencl_init] opencl_micro_nap: 0
> [opencl_init] opencl_use_pinned_memory: 0
> [opencl_init] opencl_use_cpu_devices: 0
> [opencl_init] opencl_avoid_atomics: 0
> [opencl_init] opencl_omit_whitebalance: 0
> [opencl_init]
> [opencl_init] trying to load opencl library: '<system default>'
> [opencl_init] opencl library 'libOpenCL' found on your system and loaded
> [opencl_init] could not get platforms: -1001
> [opencl_init] FINALLY: opencl is NOT AVAILABLE on this system.
> [opencl_init] initial status of opencl enabled flag is OFF.
>
> This -1001 issue is usually because the vendor OpenCL library is not
> found. But this is not the problem here as under strace I have seen
> that the proper vendor library is searched and loaded. The relevant
> lines are:
>
> 6633 open("/etc/OpenCL/vendors/nvidia.icd", O_RDONLY) = 5
> ...
> 6633 open("/usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.331.67",
> O_RDONLY|O_CLOEXEC) = 6
>
> So I'm wondering if there is not an issue with this specific version
> of Nvidia driver.
>
> Any feedback?
>
Might be a regression in that driver version, but I don't know for sure.
Are the device special files in place and readable/writeable by you?
Something like:
crw-rw----+ 1 root video 195, 0 28. Apr 17:52 /dev/nvidia0
crw-rw----+ 1 root video 195, 255 28. Apr 17:52 /dev/nvidiactl
Ulrich
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