I use Fedora Linux KDE/Wayland. darktable works like a charm with no issues at all. I’m wondering if I could accelerate the pixel pipe. darktable-cltest shows ASYNC PIXELPIPE: NO
Is there any parameter to enable the async pixelpipe?
darktable-cltest
darktable 5.0.1
Copyright (C) 2012-2025 Johannes Hanika and other contributors.
Compile options:
Bit depth -> 64 bit
Debug -> DISABLED
SSE2 optimizations -> ENABLED
OpenMP -> ENABLED
OpenCL -> ENABLED
Lua -> ENABLED - API version 9.4.0
Colord -> ENABLED
gPhoto2 -> ENABLED
GMIC -> ENABLED - Compressed LUTs are supported
GraphicsMagick -> ENABLED
ImageMagick -> DISABLED
libavif -> ENABLED
libheif -> ENABLED
libjxl -> ENABLED
LibRaw -> ENABLED - Version 0.22.0-Devel202403
OpenJPEG -> ENABLED
OpenEXR -> ENABLED
WebP -> ENABLED
See https://www.darktable.org/resources/ for detailed documentation.
See https://github.com/darktable-org/darktable/issues/new/choose to report bugs.
0.4042 [dt_get_sysresource_level] switched to 2 as `large'
0.4042 total mem: 64206MB
0.4042 mipmap cache: 8025MB
0.4042 available mem: 43891MB
0.4042 singlebuff: 1003MB
0.4052 [opencl_init] opencl library 'libOpenCL' found on your system and loaded, preference 'default path'
0.8487 [opencl_init] found 1 platform
[opencl_init] found 1 device
[dt_opencl_device_init]
DEVICE: 0: 'NVIDIA GeForce RTX 3060 Ti'
CONF KEY: cldevice_v5_nvidiacudanvidiageforcertx3060ti
PLATFORM, VENDOR & ID: NVIDIA CUDA, NVIDIA Corporation, ID=4318
CANONICAL NAME: nvidiacudanvidiageforcertx3060ti
DRIVER VERSION: 570.133.07
DEVICE VERSION: OpenCL 3.0 CUDA, SM_20 SUPPORT
DEVICE_TYPE: GPU, dedicated mem
GLOBAL MEM SIZE: 7851 MB
MAX MEM ALLOC: 1963 MB
MAX IMAGE SIZE: 32768 x 32768
MAX WORK GROUP SIZE: 1024
MAX WORK ITEM DIMENSIONS: 3
MAX WORK ITEM SIZES: [ 1024 1024 64 ]
**ASYNC PIXELPIPE: NO**
PINNED MEMORY TRANSFER: NO
USE HEADROOM: 400Mb
AVOID ATOMICS: NO
MICRO NAP: 250
ROUNDUP WIDTH & HEIGHT 16x16
CHECK EVENT HANDLES: 128
TILING ADVANTAGE: 0.000
DEFAULT DEVICE: NO
KERNEL BUILD DIRECTORY: /usr/share/darktable/kernels
KERNEL DIRECTORY: /home/jim/.cache/darktable/cached_v5_kernels_for_NVIDIACUDANVIDIAGeForceRTX3060Ti_57013307
CL COMPILER OPTION: -cl-fast-relaxed-math
CL COMPILER COMMAND: -w -cl-fast-relaxed-math -DNVIDIA_SM_20=1 -DNVIDIA=1 -I"/usr/share/darktable/kernels"
KERNEL LOADING TIME: 2.0942 sec
[opencl_init] OpenCL successfully initialized. internal numbers and names of available devices:
[opencl_init] 0 'NVIDIA CUDA NVIDIA GeForce RTX 3060 Ti'
3.0570 [opencl_init] FINALLY: opencl PREFERENCE=ON is AVAILABLE and ENABLED.
[opencl_init] opencl_scheduling_profile: 'very fast GPU'
[opencl_init] opencl_device_priority: '1,*/1,*/1,*/1,*/0,*'
[opencl_init] opencl_mandatory_timeout: 20000
[opencl_update_priorities] these are your device priorities:
[opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[opencl_update_priorities] image preview export thumbs preview2
[opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
[opencl_update_priorities] these are your device priorities:
[opencl_update_priorities] image preview export thumbs preview2
[dt_opencl_update_priorities] 0 0 0 0 0
[opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[opencl_update_priorities] image preview export thumbs preview2
[opencl_update_priorities] 1 1 1 1 1
[opencl_synchronization_timeout] synchronization timeout set to 0
3.3861 [iop_load_module] failed to open `rawdenoise': /usr/lib64/darktable/plugins/librawdenoise.so: undefined symbol: _ZGVbM4v_sqrtf
The preference screen looks like this:
