Darktable 4.6, openSUSE Tumbleweed, JXL libraries installed
I can export to lossless JXL with GIMP, Krita, Digikam … however when I try to export to JXL (quality 100, so lossless) with with Darktable , it remains exporting forever, but doing nothing about (Darktable is loaded and working, but not exporting). If I try to close while exporting to lossless JXL, Darktable window is closed, but however I can see it remains loaded in “system activity” (Plasma, KDE).
What’s happening?
Thank you
run darktable with -d common to get debug information …
without that info no one can tell you, what’s happening
I tried it on my old windows box at work just now… I got tired of waiting but I minimized DT and just left it and it finished… I exported a 62 MB DNG from a recent playraw and it was slightly larger as a JXL… almost 63mb when exported at 100%. It did finish I just don’t know how long it took… I could retest but my work PC is pretty old…
dartable -d output print darktable parameters info, like -h.
However, “-v” shows:
darktable 4.6.0
Copyright (C) 2012-2023 Johannes Hanika and other contributors.
Compile options:
Bit depth -> 64 bit
Debug -> DISABLED
SSE2 optimizations -> ENABLED
OpenMP -> ENABLED
OpenCL -> ENABLED
Lua -> ENABLED - API version 9.2.0
Colord -> ENABLED
gPhoto2 -> ENABLED
GMIC -> ENABLED - Compressed LUTs are supported
GraphicsMagick -> DISABLED
ImageMagick -> DISABLED
libavif -> ENABLED
libheif -> ENABLED
libjxl -> ENABLED
OpenJPEG -> ENABLED
OpenEXR -> ENABLED
WebP -> ENABLED
and it’s strange GraphicsMaigk and ImageMagick are disabled …
Exporting to DNG is a step that doesn’t do much for me, since viewers or image managers like Gwenview or Digikam won’t show the final result after applying the filters. In my case, I prefer to keep the original RAW files and export them after processing them with Dartable to JXL lossless, once I have seen that it provides more benefits than TIFF natively, the first one, lossless compression, extended metadata support and transparencies, properties that TIFF does not have natively, but with extensions that are often incompatible if the viewer used does not implement them.
My computer is quite fast and I have waited much longer than when exporting to JXL from any other application, but Darktable does not process the queue of selected elements, it keeps showing the first element in the process of exporting indefinitely.
You need to provide a txt file of the -d common output from you export. This will be a long file with multiple rows that tell us what the system is doing.
FYI, I exported an image using 100 JXL on my system (Fedora 39 KDE) + current master and had no issues.
Is the issue only when you export to JXL? Or do you have the same issue when you export the same image/processing to jpg?
Please note I was not suggesting DNG…it was just one of the larger files that I had handy so I used it as a test image. And it was slow but completed… That was all I meant… sorry if I implied DNG use
It seems you missed the “common”. It should be
darktable -d common
Or
darktable -d common | tee output.txt
To directly save everything to a file
I executed exactly what MSTraeten tell me, without missing nothing, but your parameter worked. I launched it, did same task (3 files selected to export to lossless JXL) and again, 15 minutes without changes. And after cancel export queue and exit Dartable, he remains loaded in memory till I kill it.
darktable -d common | tee output.txt
darktable 4.6.0
Copyright (C) 2012-2023 Johannes Hanika and other contributors.
Compile options:
Bit depth -> 64 bit
Debug -> DISABLED
SSE2 optimizations -> ENABLED
OpenMP -> ENABLED
OpenCL -> ENABLED
Lua -> ENABLED - API version 9.2.0
Colord -> ENABLED
gPhoto2 -> ENABLED
GMIC -> ENABLED - Compressed LUTs are supported
GraphicsMagick -> DISABLED
ImageMagick -> DISABLED
libavif -> ENABLED
libheif -> ENABLED
libjxl -> ENABLED
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.
0.0001 application_directory: /usr/bin
0.0001 darktable.datadir: /usr/share/darktable
0.0001 darktable.plugindir: /usr/lib64/darktable
0.0002 darktable.localedir: /usr/share/locale
0.0002 darktable.configdir: /home/myuser/.config/darktable
0.0002 darktable.cachedir: /home/myuser/.cache/darktable
0.0002 darktable.sharedir: /usr/share
0.0002 darktable.tmpdir: /tmp
0.0002 new_xdg_data_dirs: (null)
1.1961 [dt_worker_threads] using 6 worker threads
1.1982 [dt_get_sysresource_level] switched to 1 as `default'
1.1982 total mem: 32009MB
1.1982 mipmap cache: 4001MB
1.1982 available mem: 16004MB
1.1982 singlebuff: 250MB
1.2297 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
1.2298 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
1.2304 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
1.3413 [opencl_init] found 2 platforms
1.3413 [check platform] platform 'Clover' with key 'clplatform_clover' is NOT active
1.3413 [check platform] platform 'rusticl' with key 'clplatform_rusticl' is NOT active
[opencl_init] found 0 device
1.3413 [opencl_init] FINALLY: opencl is NOT AVAILABLE and NOT ENABLED.
1.3977 [dt_worker_threads] using 6 worker threads
44.0342 [avif_open] failed to parse `/home/myuser/Fotos/Mías/Lugares/Europa/España/Lagunas Ruidera y Tablas Daimiel/_1020641.RW2': BMFF parsing failed
44.0343 [rawspeed_open] extensions list to ignore: `cr3'
44.0847 [dt_dev_read_history_ext] temporary history deleted
44.0847 [dt_iop_reload_defaults] defaults reloaded for filmicrgb
44.0847 [dt_iop_reload_defaults] defaults reloaded for colormapping
44.0847 [dt_iop_reload_defaults] defaults reloaded for channelmixerrgb
44.0851 [dt_iop_reload_defaults] defaults reloaded for colorin
44.0852 [dt_iop_reload_defaults] defaults reloaded for basecurve
44.0852 [dt_iop_reload_defaults] defaults reloaded for crop
44.0852 [dt_iop_reload_defaults] defaults reloaded for clipping
44.0852 [dt_iop_reload_defaults] defaults reloaded for flip
44.0852 [dt_iop_reload_defaults] defaults reloaded for scalepixels
44.0852 [dt_iop_reload_defaults] defaults reloaded for rotatepixels
44.0852 [dt_iop_reload_defaults] defaults reloaded for ashift
44.0852 [dt_iop_reload_defaults] defaults reloaded for cacorrectrgb
44.0867 [dt_iop_reload_defaults] defaults reloaded for lens
44.0867 [dt_iop_reload_defaults] defaults reloaded for retouch
44.0867 [dt_iop_reload_defaults] defaults reloaded for exposure
44.0868 [dt_iop_reload_defaults] defaults reloaded for denoiseprofile
44.0868 [dt_iop_reload_defaults] defaults reloaded for demosaic
44.0868 [dt_iop_reload_defaults] defaults reloaded for rawdenoise
44.0868 [dt_iop_reload_defaults] defaults reloaded for hotpixels
44.0868 [dt_iop_reload_defaults] defaults reloaded for cacorrect
44.0868 [dt_iop_reload_defaults] defaults reloaded for highlights
44.0868 [dt_iop_reload_defaults] temperature: D65 2.489 1.000 1.711, AS-SHOT 2.230 1.000 1.953
44.0868 [dt_iop_reload_defaults] defaults reloaded for temperature
44.0868 [dt_iop_reload_defaults] defaults reloaded for invert
44.0868 [dt_iop_reload_defaults] defaults reloaded for rawprepare
44.0898 [dt_dev_read_history_ext] temporary history initialised with default params and presets
44.0898 [dt_dev_read_history_ext] temporary history merged with image history
44.0898 [history] successfully loaded module rawprepare from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
44.0898 [history] successfully loaded module gamma from history
blendop v. 13: version ok params ok
params v. 1: version ok params ok
44.0898 [history] successfully loaded module temperature from history
blendop v. 13: version ok params ok
params v. 3: version ok params ok
44.0898 [history] successfully loaded module flip from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
44.0898 [history] successfully loaded module demosaic from history
blendop v. 13: version ok params ok
params v. 4: version ok params ok
44.0898 [history] successfully loaded module colorin from history
blendop v. 13: version ok params ok
params v. 7: version ok params ok
44.0898 [history] successfully loaded module colorout from history
blendop v. 13: version ok params ok
params v. 5: version ok params ok
44.0898 [history] successfully loaded module highlights from history
blendop v. 13: version ok params ok
params v. 4: version ok params ok
44.0898 [history] successfully loaded module sharpen from history
blendop v. 13: version ok params ok
params v. 1: version ok params ok
44.0899 [history] successfully loaded module basecurve from history
blendop v. 13: version ok params ok
params v. 6: version ok params ok
44.0899 [history] successfully loaded module colorzones from history
blendop v. 13: version ok params ok
params v. 5: version ok params ok
44.0899 [history] successfully loaded module colorcorrection from history
blendop v. 13: version ok params ok
params v. 1: version ok params ok
44.0899 [history] successfully loaded module colorzones from history
blendop v. 13: version ok params ok
params v. 5: version ok params ok
44.0899 [history] successfully loaded module colorcorrection from history
blendop v. 13: version ok params ok
params v. 1: version ok params ok
44.0899 [history] successfully loaded module toneequal from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
44.0899 [history] successfully loaded module atrous from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
44.0899 [history] successfully loaded module atrous from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
44.0899 [history] successfully loaded module lens from history
blendop v. 13: version ok params ok
params v. 10: version ok params ok
44.0959 synch all modules with defaults [export]
44.0959 [iop_validate_params] `temperature' failed for type "float", field: various
44.0959 [iop_validate_params] `temperature' failed for type "dt_iop_temperature_params_t"
44.1366 [iop_validate_params] `borders' failed for type "float", field: aspect
44.1366 [iop_validate_params] `borders' failed for type "dt_iop_borders_params_t"
44.1366 synch all modules with history [export]
44.1366 committed params [export] rawprepare piece hash=d3b5ab98d2582995,
44.1366 committed params [export] gamma piece hash=1ae2f37bb34a05,
44.1366 [iop_validate_params] `temperature' failed for type "float", field: various
44.1366 [iop_validate_params] `temperature' failed for type "dt_iop_temperature_params_t"
44.1366 committed params [export] temperature piece hash=155378a5caad3f37,
44.1366 committed params [export] flip piece hash=0,
44.1366 committed params [export] demosaic piece hash=b0702bc252c2d1d2,
44.1367 committed params [export] colorin piece hash=7563a39ceae1e96a,
44.1372 committed params [export] colorout piece hash=8e5a0f73242a7524,
44.1372 committed params [export] highlights piece hash=7f5e0368566e7fd,
44.1372 committed params [export] sharpen piece hash=473597dc29ab04f0,
44.1379 committed params [export] basecurve piece hash=ff815aa67895c728,
44.1415 committed params [export] colorzones piece hash=6cc027d29af939b1,
44.1416 committed params [export] colorcorrection piece hash=5b75be7e4881e48f,
44.1454 committed params [export] colorzones piece hash=6cc027d29af939b1,
44.1454 committed params [export] colorcorrection piece hash=5b75be7e4881e48f,
44.1493 committed params [export] toneequal piece hash=0,
44.1493 committed params [export] atrous piece hash=bcd7a96a0cee9c44,
44.1493 committed params [export] atrous piece hash=bcd7a96a0cee9c44,
44.1508 committed params [export] lens piece hash=0,
44.1508 dt_dev_pixelpipe_synch_all [export] defaults 0.0407s, history 0.0142s
44.1508 [dt_imageio_export_with_flags] 44.1508
44.1508 rawprepare 44.1508 temperature 44.1508 highlights 44.1508 demosaic 44.1508 basecurve 44.1508 colorin 44.1508 atrous 44.1508 colorzones 44.1508 colorcorrection 44.1508 sharpen 44.1508 colorout 44.1508 finalscale 44.1508 gamma 44.1508 (13)
44.1508 [dt_imageio_export] [export] imgid 4618, 5200x3904 --> 5200x3904 (scale 1.000000). upscale=no, hq=yes
44.1508 pixelpipe starting on CPU [export] ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
44.1513 modify roi IN [export] rawprepare ( 0/ 0) 5264x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
44.1513 pixelpipe data: full [export] ( 0/ 0) 5264x3904 scale=1.0000 --> ( 0/ 0) 5264x3904 scale=1.0000
44.1513 pixelpipe process CPU [export] rawprepare ( 0/ 0) 5264x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW
44.1607 pixelpipe process CPU [export] temperature ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW
44.1727 pixelpipe process CPU [export] highlights ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW
44.1854 opposed chroma CPU [export] highlights ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 red: 0.0000, green: 0.0000, blue: 0.0000 for hash=3cfdbfa631102dd6
44.1962 pixelpipe process CPU [export] demosaic ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW -> IOP_CS_RGB
44.2794 pixelpipe process CPU [export] basecurve ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RGB
44.3259 pixelpipe process CPU [export] colorin ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RGB -> IOP_CS_LAB
44.3260 matrix conversion on CPU [export] colorin ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 `matriz de color estándar'
44.3586 pixelpipe process CPU [export] atrous ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB
45.4488 pixelpipe process CPU [export] colorzones ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB
45.5338 pixelpipe process CPU [export] colorcorrection ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB
45.5728 pixelpipe process CPU [export] sharpen ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB
45.6214 pixelpipe process CPU [export] colorout ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB -> IOP_CS_RGB
45.9103 pixelpipe process CPU [export] finalscale ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RGB
45.9103 clip_and_zoom_roi [export] finalscale ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
45.9506 cache report [export] 2 lines (important=0, used=0, invalid=0). Using 627MB, limit=0MB. Hits/run=0.00. Hits/test=0.000
45.9506 pixelpipe finished [export] ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
If I do the same to TIFF, no issues.
Thank you very much for the clarification. I wrongly inferred that I was suggesting saving in DNG and I appreciate you taking the test. Maybe it’s my system, I don’t know, and with mine being Linux, it may be more complicated to get the problem right. In any case, I leave as a suggestion to anyone what I am doing, and that is to convert my TIFF to JXL lossless, that even if it is little, you save space and above all, the issue of compatibility. The native compression of JXL is excellent and compatible with any JXL viewer.
You don’t seem to have opencl working in this log when you export a raw file…in the log when you export a tif vs a raw to jxl is it the same no opencl??
No, you didn’t. He wrote:
run darktable with
-d common
And you ran darktable -d, without common:
My mistake. When I read it, even though I saw it marked as “code”, I interpreted it directly from “common”, in the sense that it was something “common” that I should even know. I apologise. It was a typical “lost in translation”.
I exported to compressed TIFF with “deflation with prediction” in about 7 seconds, and this is the result:
darktable 4.6.0
Copyright (C) 2012-2023 Johannes Hanika and other contributors.
Compile options:
Bit depth -> 64 bit
Debug -> DISABLED
SSE2 optimizations -> ENABLED
OpenMP -> ENABLED
OpenCL -> ENABLED
Lua -> ENABLED - API version 9.2.0
Colord -> ENABLED
gPhoto2 -> ENABLED
GMIC -> ENABLED - Compressed LUTs are supported
GraphicsMagick -> DISABLED
ImageMagick -> DISABLED
libavif -> ENABLED
libheif -> ENABLED
libjxl -> ENABLED
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.
0.0001 application_directory: /usr/bin
0.0001 darktable.datadir: /usr/share/darktable
0.0001 darktable.plugindir: /usr/lib64/darktable
0.0002 darktable.localedir: /usr/share/locale
0.0002 darktable.configdir: /home/myuser/.config/darktable
0.0002 darktable.cachedir: /home/myuser/.cache/darktable
0.0002 darktable.sharedir: /usr/share
0.0002 darktable.tmpdir: /tmp
0.0002 new_xdg_data_dirs: (null)
0.4226 [dt_worker_threads] using 6 worker threads
0.4256 [dt_get_sysresource_level] switched to 1 as `default'
0.4256 total mem: 32009MB
0.4256 mipmap cache: 4001MB
0.4256 available mem: 16004MB
0.4256 singlebuff: 250MB
0.4365 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
0.4365 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
0.4371 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
0.5125 [opencl_init] found 2 platforms
0.5125 [check platform] platform 'Clover' with key 'clplatform_clover' is NOT active
0.5125 [check platform] platform 'rusticl' with key 'clplatform_rusticl' is NOT active
[opencl_init] found 0 device
0.5125 [opencl_init] FINALLY: opencl is NOT AVAILABLE and NOT ENABLED.
0.5896 [dt_worker_threads] using 6 worker threads
3.2995 [_gamepad_open_devices] opened game controller 'Atari Xbox 360 Game Controller'
21.0063 [avif_open] failed to parse `/home/myuser/Fotos/Mías/Lugares/Europa/España/Lagunas Ruidera y Tablas Daimiel/_1020827.RW2': BMFF parsing failed
21.0069 [rawspeed_open] extensions list to ignore: `cr3'
21.0548 [dt_dev_read_history_ext] temporary history deleted
21.0549 [dt_iop_reload_defaults] defaults reloaded for filmicrgb
21.0549 [dt_iop_reload_defaults] defaults reloaded for colormapping
21.0549 [dt_iop_reload_defaults] defaults reloaded for channelmixerrgb
21.0552 [dt_iop_reload_defaults] defaults reloaded for colorin
21.0553 [dt_iop_reload_defaults] defaults reloaded for basecurve
21.0553 [dt_iop_reload_defaults] defaults reloaded for crop
21.0553 [dt_iop_reload_defaults] defaults reloaded for clipping
21.0553 [dt_iop_reload_defaults] defaults reloaded for flip
21.0553 [dt_iop_reload_defaults] defaults reloaded for scalepixels
21.0553 [dt_iop_reload_defaults] defaults reloaded for rotatepixels
21.0553 [dt_iop_reload_defaults] defaults reloaded for ashift
21.0553 [dt_iop_reload_defaults] defaults reloaded for cacorrectrgb
21.0569 [dt_iop_reload_defaults] defaults reloaded for lens
21.0569 [dt_iop_reload_defaults] defaults reloaded for retouch
21.0569 [dt_iop_reload_defaults] defaults reloaded for exposure
21.0570 [dt_iop_reload_defaults] defaults reloaded for denoiseprofile
21.0570 [dt_iop_reload_defaults] defaults reloaded for demosaic
21.0570 [dt_iop_reload_defaults] defaults reloaded for rawdenoise
21.0570 [dt_iop_reload_defaults] defaults reloaded for hotpixels
21.0570 [dt_iop_reload_defaults] defaults reloaded for cacorrect
21.0570 [dt_iop_reload_defaults] defaults reloaded for highlights
21.0570 [dt_iop_reload_defaults] temperature: D65 2.489 1.000 1.711, AS-SHOT 2.535 1.000 1.492
21.0570 [dt_iop_reload_defaults] defaults reloaded for temperature
21.0570 [dt_iop_reload_defaults] defaults reloaded for invert
21.0570 [dt_iop_reload_defaults] defaults reloaded for rawprepare
21.0601 [dt_dev_read_history_ext] temporary history initialised with default params and presets
21.0601 [dt_dev_read_history_ext] temporary history merged with image history
21.0601 [history] successfully loaded module rawprepare from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
21.0601 [history] successfully loaded module demosaic from history
blendop v. 13: version ok params ok
params v. 4: version ok params ok
21.0601 [history] successfully loaded module colorin from history
blendop v. 13: version ok params ok
params v. 7: version ok params ok
21.0601 [history] successfully loaded module colorout from history
blendop v. 13: version ok params ok
params v. 5: version ok params ok
21.0601 [history] successfully loaded module gamma from history
blendop v. 13: version ok params ok
params v. 1: version ok params ok
21.0601 [history] successfully loaded module temperature from history
blendop v. 13: version ok params ok
params v. 3: version ok params ok
21.0601 [history] successfully loaded module highlights from history
blendop v. 13: version ok params ok
params v. 4: version ok params ok
21.0602 [history] successfully loaded module flip from history
blendop v. 13: version ok params ok
params v. 2: version ok params ok
21.0602 [history] successfully loaded module sharpen from history
blendop v. 13: version ok params ok
params v. 1: version ok params ok
21.0602 [history] successfully loaded module basecurve from history
blendop v. 13: version ok params ok
params v. 6: version ok params ok
21.0650 synch all modules with defaults [export]
21.0650 [iop_validate_params] `temperature' failed for type "float", field: various
21.0650 [iop_validate_params] `temperature' failed for type "dt_iop_temperature_params_t"
21.1084 [iop_validate_params] `borders' failed for type "float", field: aspect
21.1084 [iop_validate_params] `borders' failed for type "dt_iop_borders_params_t"
21.1084 synch all modules with history [export]
21.1084 committed params [export] rawprepare piece hash=9ba668fdc010df95,
21.1085 committed params [export] demosaic piece hash=b0702bc252c2d1d2,
21.1085 committed params [export] colorin piece hash=7563a39ceae1e96a,
21.1090 committed params [export] colorout piece hash=8e5a0f73242a7524,
21.1090 committed params [export] gamma piece hash=1ae2f37bb34a05,
21.1090 [iop_validate_params] `temperature' failed for type "float", field: various
21.1090 [iop_validate_params] `temperature' failed for type "dt_iop_temperature_params_t"
21.1090 committed params [export] temperature piece hash=155378a5caad3f37,
21.1090 committed params [export] highlights piece hash=7f5e0368566e7fd,
21.1090 committed params [export] flip piece hash=0,
21.1090 committed params [export] sharpen piece hash=473597dc29ab04f0,
21.1097 committed params [export] basecurve piece hash=ff815aa67895c728,
21.1097 dt_dev_pixelpipe_synch_all [export] defaults 0.0434s, history 0.0013s
21.1097 [dt_imageio_export_with_flags] 21.1097
21.1097 rawprepare 21.1097 temperature 21.1097 highlights 21.1097 demosaic 21.1097 basecurve 21.1097 colorin 21.1097 sharpen 21.1097 colorout 21.1097 finalscale 21.1097 gamma 21.1097 (10)
21.1097 [dt_imageio_export] [export] imgid 4637, 5200x3904 --> 5200x3904 (scale 1.000000). upscale=no, hq=yes
21.1097 pixelpipe starting on CPU [export] ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
21.1097 modify roi IN [export] rawprepare ( 0/ 0) 5264x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
21.1098 pixelpipe data: full [export] ( 0/ 0) 5264x3904 scale=1.0000 --> ( 0/ 0) 5264x3904 scale=1.0000
21.1098 pixelpipe process CPU [export] rawprepare ( 0/ 0) 5264x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW
21.1198 pixelpipe process CPU [export] temperature ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW
21.1338 pixelpipe process CPU [export] highlights ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW
21.1554 opposed chroma CPU [export] highlights ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 red: 0.0000, green: 0.0000, blue: 0.0000 for hash=a2ed7cb62a153808
21.1646 pixelpipe process CPU [export] demosaic ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RAW -> IOP_CS_RGB
21.2590 pixelpipe process CPU [export] basecurve ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RGB
21.3091 pixelpipe process CPU [export] colorin ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RGB -> IOP_CS_LAB
21.3092 matrix conversion on CPU [export] colorin ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 `matriz de color estándar'
21.3824 pixelpipe process CPU [export] sharpen ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB
21.4277 pixelpipe process CPU [export] colorout ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_LAB -> IOP_CS_RGB
21.7096 pixelpipe process CPU [export] finalscale ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000 IOP_CS_RGB
21.7096 clip_and_zoom_roi [export] finalscale ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
21.7483 cache report [export] 2 lines (important=0, used=0, invalid=0). Using 627MB, limit=0MB. Hits/run=0.00. Hits/test=0.000
21.7483 pixelpipe finished [export] ( 0/ 0) 5200x3904 scale=1.0000 --> ( 0/ 0) 5200x3904 scale=1.0000
26.9184 [export_job] exported to `/home/myuser/Fotos/Mías/Lugares/Europa/España/Lagunas Ruidera y Tablas Daimiel/_1020827.tif'
126.4553 Session fullpipe cache report. hits/run=0.00, hits/test=0.000
As can be seen, the “export_job” does not even appear.
Regarding openCL, unfortunately, for the Tumbleweed version of openSUSE, AMD does not offer the compiled version of amdgpu-pro (ROCm) and as it is not open source, I cannot compile it and consequently I cannot make use of the GPU with openCL 
It’s not an openCL issue.
I found an RW2 image with similar dimensions as yours (5200x3904). It took a long time to encode at 8 bit (I cant tell what your settings are for bit depth).
I know encoding lossless takes time and I’m not sure how optimize it currently is. It might be using just one CPU core.
Also libjxl is likely relatively unoptimized compared to other libs like tiff/jpg/png
After about 35 minutes, debug file showed this message
1187.8119 [jxl] libjxl call failed with err 1 (src/imageio/format/jxl.c#L375)
1187.8192 [imageio_storage_disk] could not export to file: `/home/myuser/PhotoPath/_1020827.jxl'!
Also, when I let those 35 minutes elapse until I got that error, when I closed Darktable, it no longer loaded in memory.
But the time it took for the error to occur is not at all normal, nor does it take that long with only one CPU thread. I have exported images of that size of 16 bits as I said with other software without problems and without taking that time. In all cases, it was “lossless” export to JXL.
I don’t know what libraries the other applications mentioned use, but none of them fail to export.
According to
JXL should be about as fast to encode as JPG. I don’t know if that applies to the lossless mode.
You are right. You can export from any of the other applications mentioned and you will find that it takes even less time than exporting to TIFF.