Hi, Try this (info gathered mostly from this forum): http://tech.kovacs-telekes.org/2014-07-29-darktable-opencl-nvidia-ubuntu-1404-mint-17
Kofa On 5 October 2014 20:39, Michael Below <be...@judiz.de> wrote: > Hi, > > I am trying to use darktable with OpenCL with my NVidia GTX750, using > Debian testing, kernel 3.16 and the NVidia driver 340.32. > > According to clinfo, two OpenCL platforms are there. According to > darktable, libOpenCL is not found. In fact, libOpenCL.so.1 is there, as well > as the necessary nvidia opencl library. > > Any ideas? What are the requirements for darktable to recognize an OpenCL > platform? May darktable be confused because the CPU is also offered as an > OpenCL platform? > > Thanks for your input... > > Michael > > ##### > > $ darktable -d opencl > [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: 0 > [opencl_init] opencl_synch_cache: 0 > [opencl_init] opencl_number_event_handles: 25 > [opencl_init] opencl_micro_nap: 1000 > [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] could not find opencl runtime library 'libOpenCL' > [opencl_init] no working opencl library found. Continue with opencl > disabled > [opencl_init] FINALLY: opencl is NOT AVAILABLE on this system. > [opencl_init] initial status of opencl enabled flag is OFF. > > ##### > > $ clinfo > Number of platforms: 2 > Platform Profile: FULL_PROFILE > Platform Version: OpenCL 1.2 AMD-APP > (937.2) Platform Name: AMD > Accelerated Parallel Processing Platform > Vendor: Advanced Micro Devices, Inc. > Platform Extensions: cl_khr_icd > cl_amd_event_callback cl_amd_offline_devices Platform > Profile: FULL_PROFILE Platform > Version: OpenCL 1.1 CUDA 6.5.14 Platform > Name: NVIDIA CUDA Platform > Vendor: NVIDIA Corporation Platform > Extensions: cl_khr_byte_addressable_store > cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options > cl_nv_device_attribute_query cl_nv_pragma_unroll > > > Platform Name: AMD Accelerated > Parallel Processing Number of devices: 1 > Device Type: CL_DEVICE_TYPE_CPU > Device ID: 4098 > Max compute units: 4 > Max work items dimensions: 3 > Max work items[0]: 1024 > Max work items[1]: 1024 > Max work items[2]: 1024 > Max work group size: 1024 > Preferred vector width char: 16 > Preferred vector width short: 8 > Preferred vector width int: 4 > Preferred vector width long: 2 > Preferred vector width float: 4 > Preferred vector width double: 0 > Native vector width char: 16 > Native vector width short: 8 > Native vector width int: 4 > Native vector width long: 2 > Native vector width float: 4 > Native vector width double: 0 > Max clock frequency: 2600Mhz > Address bits: 64 > Max memory allocation: 2147483648 > Image support: Yes > Max number of images read arguments: 128 > Max number of images write arguments: 8 > Max image 2D width: 8192 > Max image 2D height: 8192 > Max image 3D width: 2048 > Max image 3D height: 2048 > Max image 3D depth: 2048 > Max samplers within kernel: 16 > Max size of kernel argument: 4096 > Alignment (bits) of base address: 1024 > Minimum alignment (bytes) for any datatype: 128 > Single precision floating point capability > Denorms: Yes > Quiet NaNs: Yes > Round to nearest even: Yes > Round to zero: Yes > Round to +ve and infinity: Yes > IEEE754-2008 fused multiply-add: Yes > Cache type: Read/Write > Cache line size: 64 > Cache size: 65536 > Global memory size: 6257696768 > Constant buffer size: 65536 > Max number of constant args: 8 > Local memory type: Global > Local memory size: 32768 > Error correction support: 0 > Unified memory for Host and Device: 1 > Profiling timer resolution: 1 > Device endianess: Little > Available: Yes > Compiler available: Yes > Execution capabilities: > Execute OpenCL kernels: Yes > Execute native function: Yes > Queue properties: > Out-of-Order: No > Profiling : Yes > Platform ID: 0x7f6d2d2930c0 > Name: AMD Phenom(tm) II X4 > 810 Processor Vendor: > AuthenticAMD Device OpenCL C version: OpenCL C > 1.2 Driver version: 2.0 (sse2) > Profile: FULL_PROFILE > Version: OpenCL 1.2 AMD-APP > (937.2) Extensions: cl_khr_fp64 > cl_amd_fp64 cl_khr_global_int32_base_atomics > cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics > cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics > cl_khr_int64_extended_atomics cl_khr_byte_addressable_store > cl_khr_gl_sharing cl_ext_device_fission cl_amd_device_attribute_query > cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_popcnt > > > Platform Name: NVIDIA CUDA > Number of devices: 1 > Device Type: CL_DEVICE_TYPE_GPU > Device ID: 4318 > Max compute units: 5 > Max work items dimensions: 3 > Max work items[0]: 1024 > Max work items[1]: 1024 > Max work items[2]: 64 > Max work group size: 1024 > Preferred vector width char: 1 > Preferred vector width short: 1 > Preferred vector width int: 1 > Preferred vector width long: 1 > Preferred vector width float: 1 > Preferred vector width double: 1 > Native vector width char: 1 > Native vector width short: 1 > Native vector width int: 1 > Native vector width long: 1 > Native vector width float: 1 > Native vector width double: 1 > Max clock frequency: 1084Mhz > Address bits: 32 > Max memory allocation: 536690688 > Image support: Yes > Max number of images read arguments: 256 > Max number of images write arguments: 16 > Max image 2D width: 32768 > Max image 2D height: 32768 > Max image 3D width: 4096 > Max image 3D height: 4096 > Max image 3D depth: 4096 > Max samplers within kernel: 32 > Max size of kernel argument: 4352 > Alignment (bits) of base address: 4096 > Minimum alignment (bytes) for any datatype: 128 > Single precision floating point capability > Denorms: Yes > Quiet NaNs: Yes > Round to nearest even: Yes > Round to zero: Yes > Round to +ve and infinity: Yes > IEEE754-2008 fused multiply-add: Yes > Cache type: Read/Write > Cache line size: 128 > Cache size: 81920 > Global memory size: 2146762752 > Constant buffer size: 65536 > Max number of constant args: 9 > Local memory type: Local > Local memory size: 49151 > Error correction support: 0 > Unified memory for Host and Device: 0 > Profiling timer resolution: 1000 > Device endianess: Little > Available: Yes > Compiler available: Yes > Execution capabilities: > Execute OpenCL kernels: Yes > Execute native function: No > Queue properties: > Out-of-Order: Yes > Profiling : Yes > Platform ID: 0xe31050 > Name: GeForce GTX 750 Ti > Vendor: NVIDIA Corporation > Device OpenCL C version: OpenCL C 1.1 > Driver version: 340.32 > Profile: FULL_PROFILE > Version: OpenCL 1.1 CUDA > Extensions: > cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing > cl_nv_compiler_options cl_nv_device_attribute_query > cl_nv_pragma_unroll cl_khr_global_int32_base_atomics > cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics > cl_khr_local_int32_extended_atomics cl_khr_fp64 > > ##### > > $ locate libOpenCL > /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 > /usr/lib/x86_64-linux-gnu/libOpenCL.so.1.0.0 > > > ##### > > $ ls -l /usr/lib/x86_64-linux-gnu/libOpenCL.so* > lrwxrwxrwx 1 root root 18 Sep 1 16:57 > /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 -> libOpenCL.so.1.0.0 > -rw-r--r-- 1 root root 39304 Sep 1 16:57 > /usr/lib/x86_64-linux-gnu/libOpenCL.so.1.0.0 > > ##### > > $ ls -l /etc/OpenCL/vendors/ > insgesamt 8 > -rw-r--r-- 1 root root 15 Nov 8 2011 amdocl64.icd > -rw-r--r-- 1 root root 22 Aug 6 04:58 nvidia.icd > > ##### > > $ cat /etc/OpenCL/vendors/nvidia.icd > libnvidia-opencl.so.1 > > ##### > > $ locate libnvidia-opencl.so > /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 > /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.340.32 > > ##### > > $ ls -l /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so* > lrwxrwxrwx 1 root root 26 Aug 18 11:31 > /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1 -> libnvidia-opencl.so.340.32 > -rw-r--r-- 1 root root 14085968 Aug 6 05:46 > /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.340.32 > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you 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