Intel ARC B580 and opencl in darktable not available

Hardware
, ,
1

Hi- I just installed an Intel Arc B580 on my desktop, and have no opencl available in daarktable. Here’s cli output on dt startup:

 darktable -d opencl

(darktable:7942): Gtk-WARNING **: 11:00:58.025: Theme parsing error: gtk.css:2:33: Failed to import: Error opening file /home/marcs/.config/gtk-3.0/window_decorations.css: No such file or directory
     0.2705 [dt_get_sysresource_level] switched to 2 as `large'
     0.2705   total mem:       61877MB
     0.2705   mipmap cache:    7734MB
     0.2705   available mem:   42298MB
     0.2705   singlebuff:      966MB
     0.2876 [opencl_init] opencl disabled via darktable preferences
     0.2877 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
     0.2877 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
     0.2878 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
     0.2878 [opencl_init] 0 platforms detected, error: Unknown OpenCL error
     0.2878 [opencl_init] FINALLY: opencl PREFERENCE=OFF is NOT AVAILABLE and NOT ENABLED.


❯ clinfo
Number of platforms                               0

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.3.2
  ICD loader Profile                              OpenCL 3.0

I’m running Aurora, an atomic distro based on Fedora kinoite, kernel 6.12.10-200.fc41.x86_64 (64-bit)

darktable is 5.0.1 installed from Fedora repo.

Any help troubleshooting would be great, not sure what is missing.

Thanks

2

I’d assume since its kinoite, this is a flatpak, which means only nvidia opencl works, sorry

3

Hi Mica-

No, it’s not a flatpak, it was installed as layered software from the current stable Fedora OS repo.

4

Ah OK. Then turn on the opencl preference, then run the darktable cltest again.

5

Hi there-

I set up a Fedora distrobox and installed darktable and the intel-opencl package, and openCL did become active in darktable, so I’m part way there. I have to decide whether to layer it in to my atomic distro, or point my distrobox version of darktable to my darktable config files and go from there.

6

I also layered in intel-opencl and was able to enable and use openCL in darktable successfully for editing. Haven’t tested export yet.

I decided against distrobox method, at least for now.

7

You have no openCL drivers available in your OS.

8

That was the problem. Sorted out now.

9

If it were me, I’d layer it in. If you’re using distrobox, you’re using some sort of remote desktop, no? That is subpar.

10

I did end up layering it, although the performance was about the same in the box.
Having the openCL seems only a bit faster than not using it, and it seems like darktable hangs a bit more with openCL enabled. I’ll use it for a while and then decide if it’s worth it.

I’ve been working with just the onboard graphics for the past couple months, and pretty impressed with how fast it is on a modern system. I’m not sure the GPU really makes much difference.

11

If you post the output from darktable-opencl and then the output from darktable -d perf working on one image we might discover why it hangs. I don’t recall see a lot of Intel cards, so it might be worth the investigation even if it doesn’t help your system.

2 Likes
12

I don’t know how good/bad the Intel drivers are, but it should feel quite a bit faster with that card. Have you tried with a heavy module like Diffuse or Sharpen?

DT does run well on my CPU only and laptop, its quite responsive. But my desktop with an RTX 3060 is way faster, it’s not even close

1 Like
13

Hi Mica-

Yes, D/S is a module I use frequently since building a new PC. I had avoided it on my 2018 era pc, as it was too slow. New build, works fine with or w/out GPU.

I’ve noticed the hang in the exposure module and had a crash in the Sigmoid module.

As g-man requested, I’ll run those tests as soon as I get a chance.

14

Hi g-man,

Hopefully I did this correctly. Please let me know if you need another run.

Thanks,

❯ darktable -d opencl
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.

     0.0000 [dt starting]
 darktable -d opencl

(darktable:43811): Gtk-WARNING **: 09:59:08.331: Theme parsing error: gtk.css:2:33: Failed to import: Error opening file /home/marcs/.config/gtk-3.0/window_decorations.css: No such file or directory
     0.2436 [dt_get_sysresource_level] switched to 2 as `large'
     0.2436   total mem:       61877MB
     0.2436   mipmap cache:    7734MB
     0.2436   available mem:   42298MB
     0.2436   singlebuff:      966MB
     0.2605 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL'
     0.2606 [dt_dlopencl_init] could not find default opencl runtime library 'libOpenCL.so'
     0.2607 [opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded, preference 'default path'
     0.2824 [opencl_init] found 1 platform
[opencl_init] found 1 device

[dt_opencl_device_init]

❯ darktable -d perf
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.

     0.0001 [dt starting]
 darktable -d perf

(darktable:45789): Gtk-WARNING **: 10:02:38.471: Theme parsing error: gtk.css:2:33: Failed to import: Error opening file /home/marcs/.config/gtk-3.0/window_decorations.css: No such file or directory
     4.8277 [dt_dev_load_raw] loading the image. took 0.207 secs (0.254 CPU)
     5.1297 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.1726 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     5.1894 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full]
     5.2068 [dev_pixelpipe] took 0.017 secs (0.003 CPU) [full] processed `rawprepare' on GPU, blended on GPU
     5.2163 [dev_pixelpipe] took 0.010 secs (0.002 CPU) [full] processed `temperature' on GPU, blended on GPU
     5.2556 [dev_pixelpipe] took 0.039 secs (0.007 CPU) [full] processed `highlights' on GPU, blended on GPU
     5.2838 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.2903 [resample_cl] plan 0.000 secs (0.000 CPU) resample 0.034 secs (0.012 CPU)
     5.3149 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.3232 [dev_pixelpipe] took 0.068 secs (0.133 CPU) [full] processed `demosaic' on GPU, blended on GPU
     5.3316 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.3693 [dev_pixelpipe] took 0.046 secs (0.077 CPU) [full] processed `denoiseprofile' on GPU, blended on GPU
     5.3793 [dev_pixelpipe] took 0.010 secs (0.011 CPU) [full] processed `lens' on GPU, blended on GPU
     5.3807 [dev_pixelpipe] took 0.001 secs (0.003 CPU) [full] processed `exposure' on GPU, blended on GPU
     5.3836 [dev_pixelpipe] took 0.003 secs (0.003 CPU) [full] processed `colorin' on GPU, blended on GPU
     5.3853 [dt_ioppr_transform_image_colorspace_cl] IOP_CS_LAB-->IOP_CS_RGB took 0.001 secs (0.001 GPU) [channelmixerrgb]
     5.3875 [dev_pixelpipe] took 0.004 secs (0.004 CPU) [full] processed `channelmixerrgb' on GPU, blended on GPU
     5.4699 [dt_dev_load_raw] loading the image. took 0.182 secs (0.339 CPU)
     5.4853 [export] creating pixelpipe took 0.013 secs (0.030 CPU)
     5.4854 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [thumbnail]
     5.4907 [dev_pixelpipe] took 0.005 secs (0.024 CPU) [thumbnail] processed `rawprepare' on CPU, blended on CPU
     5.4963 [dev_pixelpipe] took 0.006 secs (0.020 CPU) [thumbnail] processed `temperature' on CPU, blended on CPU
     5.5010 [dev_pixelpipe] took 0.005 secs (0.079 CPU) [thumbnail] processed `highlights' on CPU, blended on CPU
     5.5031 [dev_pixelpipe] took 0.002 secs (0.041 CPU) [thumbnail] processed `demosaic' on CPU, blended on CPU
     5.5031 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [thumbnail] processed `exposure' on CPU, blended on CPU
     5.5032 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [thumbnail] processed `colorin' on CPU, blended on CPU
     5.5032 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.000 secs (0.000 CPU) [channelmixerrgb]
     5.5033 [dev_pixelpipe] took 0.000 secs (0.001 CPU) [thumbnail] processed `channelmixerrgb' on CPU, blended on CPU
     5.5035 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [thumbnail] processed `sigmoid' on CPU, blended on CPU
     5.5035 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.000 secs (0.000 CPU) [colorout]
     5.5037 [dev_pixelpipe] took 0.000 secs (0.002 CPU) [thumbnail] processed `colorout' on CPU, blended on CPU
     5.5037 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [thumbnail] processed `gamma' on CPU, blended on CPU
     5.5037 [dev_process_thumbnail] pixel pipeline processing took 0.018 secs (0.172 CPU)
     5.5152 [dev_pixelpipe] took 0.128 secs (0.335 CPU) [full] processed `diffuse' on GPU, blended on GPU
     5.5340 [dev_pixelpipe] took 0.019 secs (0.025 CPU) [full] processed `colorbalancergb' on GPU, blended on GPU
     5.5354 [dev_pixelpipe] took 0.001 secs (0.000 CPU) [full] processed `sigmoid' on GPU, blended on GPU
     5.5648 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.003 secs (0.028 CPU) [colorout]
     5.5962 [dev_pixelpipe] took 0.061 secs (0.616 CPU) [full] processed `colorout' on CPU, blended on CPU
     5.6080 [dev_pixelpipe] took 0.012 secs (0.040 CPU) [full] processed `watermark' on CPU, blended on CPU
     5.6105 [dev_pixelpipe] took 0.002 secs (0.041 CPU) [full] processed `gamma' on CPU, blended on CPU
     5.6135 [dev_process_image] pixel pipeline took 0.424 secs (1.300 CPU) processing `_0M10819.ORF'
     5.6243 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     5.6349 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.6409 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     5.6518 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [preview]
     5.6520 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [preview] processed `rawprepare' on CPU, blended on CPU
     5.6524 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [preview] processed `temperature' on CPU, blended on CPU
     5.6527 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [preview] processed `highlights' on CPU, blended on CPU
     5.6569 [dev_pixelpipe] took 0.004 secs (0.027 CPU) [preview] processed `demosaic' on CPU, blended on CPU
     5.6980 [dev_pixelpipe] took 0.041 secs (0.564 CPU) [preview] processed `denoiseprofile' on CPU, blended on CPU
     5.7099 [dev_pixelpipe] took 0.012 secs (0.135 CPU) [preview] processed `lens' on CPU, blended on CPU
     5.7107 [dev_pixelpipe] took 0.001 secs (0.000 CPU) [preview] processed `exposure' on CPU, blended on CPU
     5.7116 [dev_pixelpipe] took 0.001 secs (0.006 CPU) [preview] processed `colorin' on CPU, blended on CPU
     5.7119 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.000 secs (0.005 CPU) [channelmixerrgb]
     5.7149 [dev_pixelpipe] took 0.003 secs (0.072 CPU) [preview] processed `channelmixerrgb' on CPU, blended on CPU
     5.7469 [dev_pixelpipe] took 0.032 secs (0.414 CPU) [preview] processed `diffuse' on CPU, blended on CPU
     5.7648 [dev_pixelpipe] took 0.018 secs (0.297 CPU) [preview] processed `colorbalancergb' on CPU, blended on CPU
     5.7713 [dev_pixelpipe] took 0.006 secs (0.075 CPU) [preview] processed `sigmoid' on CPU, blended on CPU
     5.7720 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.000 secs (0.005 CPU) [colorout]
     5.7802 [dev_pixelpipe] took 0.009 secs (0.150 CPU) [preview] processed `colorout' on CPU, blended on CPU
     5.7887 [dev_pixelpipe] took 0.008 secs (0.027 CPU) [preview] processed `watermark' on CPU, blended on CPU
     5.7895 [dev_pixelpipe] took 0.001 secs (0.011 CPU) [preview] processed `gamma' on CPU, blended on CPU
     5.7914 [dt_ioppr_transform_image_colorspace_rgb] `system display profile' -> `sRGB' took 0.002 secs (0.028 CPU) [final histogram]
     5.8261 [histogram] took 0.037 secs (0.078 CPU) final waveform
     5.8268 [dev_process_image] pixel pipeline took 0.175 secs (1.863 CPU) processing `_0M10819.ORF'
     5.8389 [histogram] took 0.001 secs (0.001 CPU) scope draw
     7.3003 [dt_dev_load_raw] loading the image. took 0.000 secs (0.000 CPU)
     7.3043 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     7.3223 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full/dev]
     7.3301 [dev_pixelpipe] took 0.008 secs (0.000 CPU) [full/dev] processed `rawprepare' on GPU, blended on GPU
     7.3327 [dev_pixelpipe] took 0.003 secs (0.000 CPU) [full/dev] processed `temperature' on GPU, blended on GPU
     7.3559 [dev_pixelpipe] took 0.023 secs (0.011 CPU) [full/dev] processed `highlights' on GPU, blended on GPU
     7.3590 [resample_cl] plan 0.000 secs (0.000 CPU) resample 0.002 secs (0.000 CPU)
     7.4002 [dev_pixelpipe] took 0.044 secs (0.004 CPU) [full/dev] processed `demosaic' on GPU, blended on GPU
     7.4021 [dev_pixelpipe] took 0.002 secs (0.000 CPU) [full/dev] processed `exposure' on GPU, blended on GPU
     7.4061 [dev_pixelpipe] took 0.004 secs (0.000 CPU) [full/dev] processed `colorin' on GPU, blended on GPU
     7.4087 [dt_ioppr_transform_image_colorspace_cl] IOP_CS_LAB-->IOP_CS_RGB took 0.002 secs (0.000 GPU) [channelmixerrgb]
     7.4111 [dev_pixelpipe] took 0.005 secs (0.001 CPU) [full/dev] processed `channelmixerrgb' on GPU, blended on GPU
     7.4133 [dev_pixelpipe] took 0.002 secs (0.001 CPU) [full/dev] processed `sigmoid' on GPU, blended on GPU
     7.4417 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.002 secs (0.033 CPU) [colorout]
     7.4692 [dev_pixelpipe] took 0.056 secs (0.650 CPU) [full/dev] processed `colorout' on CPU, blended on CPU
     7.4717 [dev_pixelpipe] took 0.003 secs (0.042 CPU) [full/dev] processed `gamma' on CPU, blended on CPU
     7.4743 [dev_process_image] pixel pipeline took 0.152 secs (0.711 CPU) processing `_0M10819.ORF'
    25.7795 [histogram] took 0.002 secs (0.002 CPU) scope draw
    25.9440 [dt_dev_load_raw] loading the image. took 0.000 secs (0.000 CPU)
    25.9734 [histogram] took 0.000 secs (0.000 CPU) scope draw
    25.9948 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    26.0180 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full]
    26.0540 [dev_pixelpipe] took 0.036 secs (0.024 CPU) [full] processed `rawprepare' on GPU, blended on GPU
    26.0689 [dev_pixelpipe] took 0.015 secs (0.009 CPU) [full] processed `temperature' on GPU, blended on GPU
    26.0982 [dev_pixelpipe] took 0.029 secs (0.014 CPU) [full] processed `highlights' on GPU, blended on GPU
    26.1017 [resample_cl] plan 0.000 secs (0.000 CPU) resample 0.003 secs (0.003 CPU)
    26.1495 [dev_pixelpipe] took 0.051 secs (0.030 CPU) [full] processed `demosaic' on GPU, blended on GPU
    26.1510 [dev_pixelpipe] took 0.001 secs (0.001 CPU) [full] processed `exposure' on GPU, blended on GPU
    26.1541 [dev_pixelpipe] took 0.003 secs (0.004 CPU) [full] processed `colorin' on GPU, blended on GPU
    26.1565 [dt_ioppr_transform_image_colorspace_cl] IOP_CS_LAB-->IOP_CS_RGB took 0.002 secs (0.001 GPU) [channelmixerrgb]
    26.1636 [dev_pixelpipe] took 0.009 secs (0.005 CPU) [full] processed `channelmixerrgb' on GPU, blended on GPU
    26.1652 [dev_pixelpipe] took 0.002 secs (0.000 CPU) [full] processed `sigmoid' on GPU, blended on GPU
    26.1984 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.003 secs (0.036 CPU) [colorout]
    26.2308 [dev_pixelpipe] took 0.066 secs (0.641 CPU) [full] processed `colorout' on CPU, blended on CPU
    26.2333 [dev_pixelpipe] took 0.002 secs (0.044 CPU) [full] processed `gamma' on CPU, blended on CPU
    26.2343 [dev_process_image] pixel pipeline took 0.227 secs (0.775 CPU) processing `_0M10819.ORF'
    26.2571 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    26.2683 [histogram] took 0.000 secs (0.000 CPU) scope draw
    26.2748 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    26.2951 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [preview]
    26.2962 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [preview] processed `rawprepare' on CPU, blended on CPU
    26.2965 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [preview] processed `temperature' on CPU, blended on CPU
    26.2969 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [preview] processed `highlights' on CPU, blended on CPU
    26.3011 [dev_pixelpipe] took 0.004 secs (0.027 CPU) [preview] processed `demosaic' on CPU, blended on CPU
    26.3017 [dev_pixelpipe] took 0.001 secs (0.000 CPU) [preview] processed `exposure' on CPU, blended on CPU
    26.3027 [dev_pixelpipe] took 0.001 secs (0.000 CPU) [preview] processed `colorin' on CPU, blended on CPU
    26.3031 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.000 secs (0.002 CPU) [channelmixerrgb]
    26.3073 [dev_pixelpipe] took 0.005 secs (0.071 CPU) [preview] processed `channelmixerrgb' on CPU, blended on CPU
    26.3113 [dev_pixelpipe] took 0.004 secs (0.088 CPU) [preview] processed `sigmoid' on CPU, blended on CPU
    26.3117 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.000 secs (0.007 CPU) [colorout]
    26.3194 [dev_pixelpipe] took 0.008 secs (0.159 CPU) [preview] processed `colorout' on CPU, blended on CPU
    26.3202 [dev_pixelpipe] took 0.001 secs (0.009 CPU) [preview] processed `gamma' on CPU, blended on CPU
    26.3218 [dt_ioppr_transform_image_colorspace_rgb] `system display profile' -> `sRGB' took 0.002 secs (0.031 CPU) [final histogram]
    26.3261 [histogram] took 0.006 secs (0.053 CPU) final waveform
    26.3263 [dev_process_image] pixel pipeline took 0.042 secs (0.418 CPU) processing `_0M10819.ORF'
    26.3352 [histogram] took 0.001 secs (0.001 CPU) scope draw
    33.7631 [histogram] took 0.002 secs (0.001 CPU) scope draw
    33.7856 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    33.7860 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    33.8032 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full]
    33.8200 [dev_pixelpipe] took 0.017 secs (0.139 CPU) [full] processed `rawprepare' on GPU, blended on GPU
    33.8296 [dev_pixelpipe] took 0.009 secs (0.163 CPU) [full] processed `temperature' on GPU, blended on GPU
    33.8375 [dev_pixelpipe] took 0.008 secs (0.116 CPU) [full] processed `highlights' on GPU, blended on GPU
    33.8464 [resample_cl] plan 0.000 secs (0.002 CPU) resample 0.007 secs (0.095 CPU)
    33.9108 [dev_pixelpipe] took 0.073 secs (1.088 CPU) [full] processed `demosaic' on GPU, blended on GPU
    33.9139 [dev_pixelpipe] took 0.003 secs (0.048 CPU) [full] processed `exposure' on GPU, blended on GPU
    33.9204 [dev_pixelpipe] took 0.006 secs (0.109 CPU) [full] processed `colorin' on GPU, blended on GPU
    33.9223 [dt_ioppr_transform_image_colorspace_cl] IOP_CS_LAB-->IOP_CS_RGB took 0.001 secs (0.004 GPU) [channelmixerrgb]
    33.9256 [dev_pixelpipe] took 0.005 secs (0.072 CPU) [full] processed `channelmixerrgb' on GPU, blended on GPU
    34.3959 [dev_pixelpipe] took 0.593 secs (8.824 CPU) [preview] processed `diffuse' on CPU, blended on CPU
    34.4021 [dev_pixelpipe] took 0.006 secs (0.093 CPU) [preview] processed `sigmoid' on CPU, blended on CPU
    34.4029 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.001 secs (0.009 CPU) [colorout]
    34.4122 [dev_pixelpipe] took 0.010 secs (0.165 CPU) [preview] processed `colorout' on CPU, blended on CPU
    34.4130 [dev_pixelpipe] took 0.001 secs (0.013 CPU) [preview] processed `gamma' on CPU, blended on CPU
    34.4152 [dt_ioppr_transform_image_colorspace_rgb] `system display profile' -> `sRGB' took 0.002 secs (0.027 CPU) [final histogram]
    34.4193 [histogram] took 0.006 secs (0.048 CPU) final waveform
    34.4195 [dev_process_image] pixel pipeline took 0.616 secs (9.145 CPU) processing `_0M10819.ORF'
    34.4219 [histogram] took 0.001 secs (0.003 CPU) scope draw
    35.6925 [dev_pixelpipe] took 1.767 secs (7.831 CPU) [full] processed `diffuse' on GPU, blended on GPU
    35.6943 [dev_pixelpipe] took 0.002 secs (0.000 CPU) [full] processed `sigmoid' on GPU, blended on GPU
    35.7224 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.002 secs (0.034 CPU) [colorout]
    35.7497 [dev_pixelpipe] took 0.055 secs (0.605 CPU) [full] processed `colorout' on CPU, blended on CPU
    35.7530 [dev_pixelpipe] took 0.003 secs (0.043 CPU) [full] processed `gamma' on CPU, blended on CPU
    35.7538 [dev_process_image] pixel pipeline took 1.959 secs (10.236 CPU) processing `_0M10819.ORF'
    42.5293 [histogram] took 0.002 secs (0.001 CPU) scope draw
    42.6927 [histogram] took 0.001 secs (0.001 CPU) scope draw

   DEVICE:                   0: 'Intel(R) Graphics [0xe20b]'
   CONF KEY:                 cldevice_v5_intelropenclgraphicsintelrgraphics0xe20b
   PLATFORM, VENDOR & ID:    Intel(R) OpenCL Graphics, Intel(R) Corporation, ID=32902
   CANONICAL NAME:           intelropenclgraphicsintelrgraphics0xe20b
   DRIVER VERSION:           24.35.30872.32
   DEVICE VERSION:           OpenCL 3.0 NEO
   DEVICE_TYPE:              GPU, dedicated mem
   GLOBAL MEM SIZE:          11605 MB
   MAX MEM ALLOC:            11605 MB
   MAX IMAGE SIZE:           16384 x 16384
   MAX WORK GROUP SIZE:      1024
   MAX WORK ITEM DIMENSIONS: 3
   MAX WORK ITEM SIZES:      [ 1024 1024 1024 ]
   ASYNC PIXELPIPE:          NO
   PINNED MEMORY TRANSFER:   NO
   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:         /var/home/marcs/.cache/darktable/cached_v5_kernels_for_IntelROpenCLGraphicsIntelRGraphics0xe20b_24353087232
   CL COMPILER OPTION:
   CL COMPILER COMMAND:      -w  -DINTEL=1 -I"/usr/share/darktable/kernels"
   KERNEL LOADING TIME:       0.1177 sec
[opencl_init] OpenCL successfully initialized. internal numbers and names of available devices:
[opencl_init]		0	'Intel(R) OpenCL Graphics Intel(R) Graphics [0xe20b]'
     0.4003 [opencl_init] FINALLY: opencl PREFERENCE=ON is AVAILABLE and ENABLED.
[opencl_init] opencl_scheduling_profile: 'default'
[opencl_init] opencl_device_priority: '*/!0,*/*/*/!0,*'
[opencl_init] opencl_mandatory_timeout: 400
[opencl_update_priorities] these are your device priorities:
[opencl_update_priorities] 		image	preview	export	thumbs	preview2
[dt_opencl_update_priorities]		0	-1	0	0	-1
[opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[opencl_update_priorities] 		image	preview	export	thumbs	preview2
[opencl_update_priorities]		0	0	0	0	0
[opencl_synchronization_timeout] synchronization timeout set to 200
[opencl_update_priorities] these are your device priorities:
[opencl_update_priorities] 		image	preview	export	thumbs	preview2
[dt_opencl_update_priorities]		0	-1	0	0	-1
[opencl_update_priorities] show if opencl use is mandatory for a given pixelpipe:
[opencl_update_priorities] 		image	preview	export	thumbs	preview2
[opencl_update_priorities]		0	0	0	0	0
[opencl_synchronization_timeout] synchronization timeout set to 200
16

I am not sure if this is relevant to performance in DT, but i read recently that (according to Intel PR) the new ARC cards expect re-size BAR to be enabled in BIOS for the cards to operate properly.

You probably already knew that, but I thought it was worth a mention. I am really hoping the ARC cards can deliver good performance in Linux based DT, as the price point is awefully compelling.

17

Absolutely correct, BAR must be enabled, along with a few other settings or the card won’t work. I think it’s the early days for this card series, and the drivers will be tuned as time goes on. Mine sat on the shelf for two months while I waited for the Linux kernel to get to 6.12 on my OS.

18

Ah! I didnt know the card wouldnt work at all without BAR. It sounded like the card just didn’t perform well without it. I may have been looking at something that was in regards to the A series card.

I am curious what the difference in export time is between utilizing openCL and just the cpu. Maybe I missed something, but it looks like the log you posted is only while you were making adjustments?

19

Hi Rob-

I’ll post the adjustment w/o openCL enabled in a bit. I made one adjustment in the diffuse/sharpen module applying the local contrast preset. Everything else is from the default workflow.

20 
 darktable -d perf

(darktable:67261): Gtk-WARNING **: 16:36:54.751: Theme parsing error: gtk.css:2:33: Failed to import: Error opening file /home/marcs/.config/gtk-3.0/window_decorations.css: No such file or directory
     5.5433 [dt_dev_load_raw] loading the image. took 0.199 secs (0.286 CPU)
     5.8527 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.8959 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     5.9094 [histogram] took 0.000 secs (0.000 CPU) scope draw
     5.9122 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full]
     5.9166 [dev_pixelpipe] took 0.004 secs (0.018 CPU) [full] processed `rawprepare' on CPU, blended on CPU
     5.9214 [dev_pixelpipe] took 0.005 secs (0.027 CPU) [full] processed `temperature' on CPU, blended on CPU
     5.9385 [dev_pixelpipe] took 0.017 secs (0.188 CPU) [full] processed `highlights' on CPU, blended on CPU
     6.0030 [resample_plain] plan 0.000 secs (0.000 CPU) resample 0.022 secs (0.371 CPU)
     6.0138 [dev_pixelpipe] took 0.075 secs (0.973 CPU) [full] processed `demosaic' on CPU, blended on CPU
     6.0974 [histogram] took 0.000 secs (0.000 CPU) scope draw
     6.2044 [dev_pixelpipe] took 0.191 secs (3.002 CPU) [full] processed `denoiseprofile' on CPU, blended on CPU
     6.2470 [dev_pixelpipe] took 0.042 secs (0.632 CPU) [full] processed `lens' on CPU, blended on CPU
     6.2507 [dev_pixelpipe] took 0.004 secs (0.038 CPU) [full] processed `exposure' on CPU, blended on CPU
     6.2550 [dev_pixelpipe] took 0.004 secs (0.039 CPU) [full] processed `colorin' on CPU, blended on CPU
     6.2567 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.002 secs (0.029 CPU) [channelmixerrgb]
     6.2722 [dt_dev_load_raw] loading the image. took 0.230 secs (3.539 CPU)
     6.2744 [dev_pixelpipe] took 0.019 secs (0.291 CPU) [full] processed `channelmixerrgb' on CPU, blended on CPU
     6.3109 [export] creating pixelpipe took 0.035 secs (0.350 CPU)
     6.3111 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [thumbnail]
     6.3213 [dev_pixelpipe] took 0.010 secs (0.097 CPU) [thumbnail] processed `rawprepare' on CPU, blended on CPU
     6.3279 [dev_pixelpipe] took 0.007 secs (0.075 CPU) [thumbnail] processed `temperature' on CPU, blended on CPU
     6.3389 [dev_pixelpipe] took 0.011 secs (0.237 CPU) [thumbnail] processed `highlights' on CPU, blended on CPU
     6.3423 [dev_pixelpipe] took 0.003 secs (0.062 CPU) [thumbnail] processed `demosaic' on CPU, blended on CPU
     6.3457 [dev_pixelpipe] took 0.003 secs (0.059 CPU) [thumbnail] processed `exposure' on CPU, blended on CPU
     6.3459 [dev_pixelpipe] took 0.000 secs (0.018 CPU) [thumbnail] processed `colorin' on CPU, blended on CPU
     6.3491 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.003 secs (0.068 CPU) [channelmixerrgb]
     6.3499 [dev_pixelpipe] took 0.004 secs (0.086 CPU) [thumbnail] processed `channelmixerrgb' on CPU, blended on CPU
     6.3502 [dev_pixelpipe] took 0.000 secs (0.004 CPU) [thumbnail] processed `sigmoid' on CPU, blended on CPU
     6.3503 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.000 secs (0.001 CPU) [colorout]
     6.3506 [dev_pixelpipe] took 0.000 secs (0.004 CPU) [thumbnail] processed `colorout' on CPU, blended on CPU
     6.3510 [dev_pixelpipe] took 0.000 secs (0.004 CPU) [thumbnail] processed `gamma' on CPU, blended on CPU
     6.3510 [dev_process_thumbnail] pixel pipeline processing took 0.040 secs (0.648 CPU)
     6.4249 [dev_pixelpipe] took 0.150 secs (2.008 CPU) [full] processed `diffuse' on CPU, blended on CPU
     6.4959 [dev_pixelpipe] took 0.071 secs (1.159 CPU) [full] processed `colorbalancergb' on CPU, blended on CPU
     6.5121 [dev_pixelpipe] took 0.016 secs (0.351 CPU) [full] processed `sigmoid' on CPU, blended on CPU
     6.5138 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.002 secs (0.033 CPU) [colorout]
     6.5399 [dev_pixelpipe] took 0.028 secs (0.619 CPU) [full] processed `colorout' on CPU, blended on CPU
     6.5534 [dev_pixelpipe] took 0.013 secs (0.069 CPU) [full] processed `watermark' on CPU, blended on CPU
     6.5563 [dev_pixelpipe] took 0.003 secs (0.042 CPU) [full] processed `gamma' on CPU, blended on CPU
     6.5590 [dev_process_image] pixel pipeline took 0.647 secs (9.461 CPU) processing `_0M10819.ORF'
     6.5702 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     6.5835 [histogram] took 0.000 secs (0.000 CPU) scope draw
     6.5904 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     6.6011 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [preview]
     6.6013 [dev_pixelpipe] took 0.000 secs (0.004 CPU) [preview] processed `rawprepare' on CPU, blended on CPU
     6.6016 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [preview] processed `temperature' on CPU, blended on CPU
     6.6019 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [preview] processed `highlights' on CPU, blended on CPU
     6.6059 [dev_pixelpipe] took 0.004 secs (0.038 CPU) [preview] processed `demosaic' on CPU, blended on CPU
     6.6432 [dev_pixelpipe] took 0.037 secs (0.573 CPU) [preview] processed `denoiseprofile' on CPU, blended on CPU
     6.6553 [dev_pixelpipe] took 0.012 secs (0.138 CPU) [preview] processed `lens' on CPU, blended on CPU
     6.6561 [dev_pixelpipe] took 0.001 secs (0.001 CPU) [preview] processed `exposure' on CPU, blended on CPU
     6.6570 [dev_pixelpipe] took 0.001 secs (0.010 CPU) [preview] processed `colorin' on CPU, blended on CPU
     6.6574 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.000 secs (0.004 CPU) [channelmixerrgb]
     6.6609 [dev_pixelpipe] took 0.004 secs (0.070 CPU) [preview] processed `channelmixerrgb' on CPU, blended on CPU
     6.6912 [dev_pixelpipe] took 0.030 secs (0.396 CPU) [preview] processed `diffuse' on CPU, blended on CPU
     6.7093 [dev_pixelpipe] took 0.018 secs (0.298 CPU) [preview] processed `colorbalancergb' on CPU, blended on CPU
     6.7145 [dev_pixelpipe] took 0.005 secs (0.085 CPU) [preview] processed `sigmoid' on CPU, blended on CPU
     6.7150 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.000 secs (0.008 CPU) [colorout]
     6.7222 [dev_pixelpipe] took 0.008 secs (0.162 CPU) [preview] processed `colorout' on CPU, blended on CPU
     6.7298 [dev_pixelpipe] took 0.008 secs (0.021 CPU) [preview] processed `watermark' on CPU, blended on CPU
     6.7306 [dev_pixelpipe] took 0.001 secs (0.012 CPU) [preview] processed `gamma' on CPU, blended on CPU
     6.7323 [dt_ioppr_transform_image_colorspace_rgb] `system display profile' -> `sRGB' took 0.002 secs (0.027 CPU) [final histogram]
     6.7682 [histogram] took 0.038 secs (0.076 CPU) final waveform
     6.7688 [dev_process_image] pixel pipeline took 0.168 secs (1.891 CPU) processing `_0M10819.ORF'
     6.7714 [histogram] took 0.001 secs (0.001 CPU) scope draw
     9.1509 [dt_dev_load_raw] loading the image. took 0.000 secs (0.000 CPU)
     9.1547 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
     9.1735 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full/dev]
     9.1769 [dev_pixelpipe] took 0.003 secs (0.032 CPU) [full/dev] processed `rawprepare' on CPU, blended on CPU
     9.1817 [dev_pixelpipe] took 0.005 secs (0.038 CPU) [full/dev] processed `temperature' on CPU, blended on CPU
     9.2007 [dev_pixelpipe] took 0.016 secs (0.194 CPU) [full/dev] processed `highlights' on CPU, blended on CPU
     9.2687 [resample_plain] plan 0.000 secs (0.000 CPU) resample 0.021 secs (0.373 CPU)
     9.2811 [dev_pixelpipe] took 0.078 secs (1.069 CPU) [full/dev] processed `demosaic' on CPU, blended on CPU
     9.2869 [dev_pixelpipe] took 0.003 secs (0.024 CPU) [full/dev] processed `exposure' on CPU, blended on CPU
     9.2893 [dev_pixelpipe] took 0.002 secs (0.052 CPU) [full/dev] processed `colorin' on CPU, blended on CPU
     9.2910 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.002 secs (0.032 CPU) [channelmixerrgb]
     9.3049 [dev_pixelpipe] took 0.016 secs (0.281 CPU) [full/dev] processed `channelmixerrgb' on CPU, blended on CPU
     9.3210 [dev_pixelpipe] took 0.016 secs (0.355 CPU) [full/dev] processed `sigmoid' on CPU, blended on CPU
     9.3227 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.002 secs (0.028 CPU) [colorout]
     9.3551 [dev_pixelpipe] took 0.034 secs (0.612 CPU) [full/dev] processed `colorout' on CPU, blended on CPU
     9.3575 [dev_pixelpipe] took 0.002 secs (0.045 CPU) [full/dev] processed `gamma' on CPU, blended on CPU
     9.3599 [dev_process_image] pixel pipeline took 0.186 secs (2.703 CPU) processing `_0M10819.ORF'
    20.8761 [histogram] took 0.002 secs (0.002 CPU) scope draw
    21.0387 [dt_dev_load_raw] loading the image. took 0.000 secs (0.000 CPU)
    21.0684 [histogram] took 0.000 secs (0.000 CPU) scope draw
    21.1032 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    21.1534 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [full]
    21.1586 [dev_pixelpipe] took 0.005 secs (0.033 CPU) [full] processed `rawprepare' on CPU, blended on CPU
    21.1641 [dev_pixelpipe] took 0.005 secs (0.035 CPU) [full] processed `temperature' on CPU, blended on CPU
    21.1813 [dev_pixelpipe] took 0.017 secs (0.195 CPU) [full] processed `highlights' on CPU, blended on CPU
    21.2483 [resample_plain] plan 0.000 secs (0.000 CPU) resample 0.022 secs (0.393 CPU)
    21.2609 [dev_pixelpipe] took 0.080 secs (1.052 CPU) [full] processed `demosaic' on CPU, blended on CPU
    21.2647 [dev_pixelpipe] took 0.004 secs (0.031 CPU) [full] processed `exposure' on CPU, blended on CPU
    21.2696 [dev_pixelpipe] took 0.005 secs (0.033 CPU) [full] processed `colorin' on CPU, blended on CPU
    21.2712 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.002 secs (0.029 CPU) [channelmixerrgb]
    21.2884 [dev_pixelpipe] took 0.019 secs (0.271 CPU) [full] processed `channelmixerrgb' on CPU, blended on CPU
    21.3076 [dev_pixelpipe] took 0.019 secs (0.344 CPU) [full] processed `sigmoid' on CPU, blended on CPU
    21.3098 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.002 secs (0.035 CPU) [colorout]
    21.3396 [dev_pixelpipe] took 0.032 secs (0.617 CPU) [full] processed `colorout' on CPU, blended on CPU
    21.3427 [dev_pixelpipe] took 0.003 secs (0.044 CPU) [full] processed `gamma' on CPU, blended on CPU
    21.3434 [dev_process_image] pixel pipeline took 0.228 secs (2.669 CPU) processing `_0M10819.ORF'
    21.3589 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    21.3690 [histogram] took 0.000 secs (0.000 CPU) scope draw
    21.3744 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    21.3895 [dev_pixelpipe] took 0.000 secs (0.000 CPU) initing base buffer [preview]
    21.3898 [dev_pixelpipe] took 0.000 secs (0.003 CPU) [preview] processed `rawprepare' on CPU, blended on CPU
    21.3901 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [preview] processed `temperature' on CPU, blended on CPU
    21.3905 [dev_pixelpipe] took 0.000 secs (0.000 CPU) [preview] processed `highlights' on CPU, blended on CPU
    21.3947 [dev_pixelpipe] took 0.004 secs (0.033 CPU) [preview] processed `demosaic' on CPU, blended on CPU
    21.3955 [dev_pixelpipe] took 0.001 secs (0.000 CPU) [preview] processed `exposure' on CPU, blended on CPU
    21.3965 [dev_pixelpipe] took 0.001 secs (0.000 CPU) [preview] processed `colorin' on CPU, blended on CPU
    21.3969 [dt_ioppr_transform_image_colorspace] IOP_CS_LAB-->IOP_CS_RGB took 0.000 secs (0.000 CPU) [channelmixerrgb]
    21.4017 [dev_pixelpipe] took 0.005 secs (0.065 CPU) [preview] processed `channelmixerrgb' on CPU, blended on CPU
    21.4059 [dev_pixelpipe] took 0.004 secs (0.090 CPU) [preview] processed `sigmoid' on CPU, blended on CPU
    21.4064 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.000 secs (0.006 CPU) [colorout]
    21.4141 [dev_pixelpipe] took 0.008 secs (0.154 CPU) [preview] processed `colorout' on CPU, blended on CPU
    21.4151 [dev_pixelpipe] took 0.001 secs (0.011 CPU) [preview] processed `gamma' on CPU, blended on CPU
    21.4166 [dt_ioppr_transform_image_colorspace_rgb] `system display profile' -> `sRGB' took 0.001 secs (0.026 CPU) [final histogram]
    21.4203 [histogram] took 0.005 secs (0.049 CPU) final waveform
    21.4205 [dev_process_image] pixel pipeline took 0.036 secs (0.408 CPU) processing `_0M10819.ORF'
    21.4337 [histogram] took 0.001 secs (0.001 CPU) scope draw
    31.6272 [histogram] took 0.002 secs (0.001 CPU) scope draw
    31.6447 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    31.6447 [dt_dev_process_image_job] loading image. took 0.000 secs (0.000 CPU)
    32.8222 [dev_pixelpipe] took 1.158 secs (23.585 CPU) [preview] processed `diffuse' on CPU, blended on CPU
    32.8306 [dev_pixelpipe] took 0.008 secs (0.182 CPU) [preview] processed `sigmoid' on CPU, blended on CPU
    32.8351 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.004 secs (0.108 CPU) [colorout]
    32.8469 [dev_pixelpipe] took 0.016 secs (0.380 CPU) [preview] processed `colorout' on CPU, blended on CPU
    32.8530 [dev_pixelpipe] took 0.006 secs (0.134 CPU) [preview] processed `gamma' on CPU, blended on CPU
    32.8557 [dt_ioppr_transform_image_colorspace_rgb] `system display profile' -> `sRGB' took 0.003 secs (0.045 CPU) [final histogram]
    32.8651 [histogram] took 0.012 secs (0.247 CPU) final waveform
    32.8655 [dev_process_image] pixel pipeline took 1.202 secs (24.531 CPU) processing `_0M10819.ORF'
    32.8682 [histogram] took 0.001 secs (0.011 CPU) scope draw
    33.8070 [dev_pixelpipe] took 2.143 secs (43.140 CPU) [full] processed `diffuse' on CPU, blended on CPU
    33.8234 [dev_pixelpipe] took 0.016 secs (0.345 CPU) [full] processed `sigmoid' on CPU, blended on CPU
    33.8253 [dt_ioppr_transform_image_colorspace] IOP_CS_RGB-->IOP_CS_LAB took 0.002 secs (0.036 CPU) [colorout]
    33.8521 [dev_pixelpipe] took 0.029 secs (0.621 CPU) [full] processed `colorout' on CPU, blended on CPU
    33.8556 [dev_pixelpipe] took 0.004 secs (0.045 CPU) [full] processed `gamma' on CPU, blended on CPU
    33.8564 [dev_process_image] pixel pipeline took 2.193 secs (44.151 CPU) processing `_0M10819.ORF'
    41.8139 [histogram] took 0.002 secs (0.002 CPU) scope draw
    41.9798 [histogram] took 0.002 secs (0.002 CPU) scope draw