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Thread Contributor: manudarktable-cltest
#1
Bonjour, je poste dans installation faute de trouver mieux/plus approprié.

Ma machine est maintenant un peu vieille avec son AMD Athlon™ 64 X2 Dual Core Processor 4200+ × 2, ses 8Go de RAM et sa carte graphique GeForce GT 620/PCIe/SSE2 avec 2Go de RAM.

Aussi l'exploitation d'OpenCL me semble peut-être une bonne opportunité pour grappiller le peu de puissance que je peux encore trouver sur cette conf.

Sur ma machine fraîchement bootée, quand je lance DT, je vois dans l'onglet "fonctionnement" de la config que "activer le support d'Open CL" est grisé.
Dans un terminal, je lance un darktable-cltest qui me crache pas mal de chose, cf. plus bas.

Je relance DT et là, "activer le support d'OpenCL" n'est plus grisé ! Cool.

Pas facile de dire si la machine est plus rapide, faudrait un bench. Disons que si ça ne paraît pas nettement plus rapide, ça ne paraît pas moins rapide non lus !

Le pb, c'est que si je redémarre la machine, je constate que je reviens à la situation du début, et qu'il me faut refaire un darktable-cltest pour re-activer le support d'OpenCL.

Bon, je peux mettre ça en cron au boot, mais ça vous paraît normal à la base ?

Ci-dessous l'output du darktable-cltest, ce qui me chiffonne aussi un peu c'est la dernière ligne...

manu@manubuntu:~$ darktable-cltest
[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] could not find opencl runtime library 'libOpenCL'
[opencl_init] could not find opencl runtime library 'libOpenCL.so'
[opencl_init] found opencl runtime library 'libOpenCL.so.1'
[opencl_init] opencl library 'libOpenCL.so.1' found on your system and loaded
[opencl_init] found 1 platform
[opencl_init] found 1 device
[opencl_init] device 0 `GeForce GT 620' has sm_20 support.
[opencl_init] device 0 `GeForce GT 620' supports image sizes of 16384 x 16384
[opencl_init] device 0 `GeForce GT 620' allows GPU memory allocations of up to 511MB
[opencl_init] device 0: GeForce GT 620
GLOBAL_MEM_SIZE:          2047MB
MAX_WORK_GROUP_SIZE:      1024
MAX_WORK_ITEM_DIMENSIONS: 3
MAX_WORK_ITEM_SIZES:      [ 1024 1024 64 ]
DRIVER_VERSION:           352.63
DEVICE_VERSION:           OpenCL 1.1 CUDA
[opencl_init] compiling program `demosaic_ppg.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/demosaic_ppg.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/demosaic_ppg.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `atrous.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/atrous.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/atrous.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `basic.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/basic.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/basic.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `blendop.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/blendop.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/blendop.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `highpass.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/highpass.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/highpass.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `nlmeans.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/nlmeans.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/nlmeans.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `gaussian.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/gaussian.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/gaussian.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `sharpen.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/sharpen.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/sharpen.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `extended.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/extended.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/extended.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `soften.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/soften.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/soften.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `bilateral.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/bilateral.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/bilateral.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `denoiseprofile.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/denoiseprofile.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/denoiseprofile.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `bloom.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/bloom.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/bloom.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `colorreconstruction.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/colorreconstruction.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/colorreconstruction.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] compiling program `demosaic_other.cl' ..
[opencl_fopen_stat] could not open file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/demosaic_other.cl.bin'!
[opencl_load_program] could not load cached binary program, trying to compile source
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/demosaic_other.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:


[opencl_build_program] saving binary
[opencl_init] kernel loading time: 35.9945
[opencl_init] OpenCL successfully initialized.
[opencl_init] here are the internal numbers and names of OpenCL devices available to darktable:
[opencl_init]        0    'GeForce GT 620'
[opencl_init] these are your device priorities:
[opencl_init]         image    preview    export    thumbnail
[opencl_init]        0    -1    0    0
[opencl_init] FINALLY: opencl is AVAILABLE on this system.
[opencl_init] initial status of opencl enabled flag is ON.
[opencl_create_kernel] successfully loaded kernel `zero' (0) for device 0
[opencl_create_kernel] successfully loaded kernel `splat' (1) for device 0
[opencl_create_kernel] successfully loaded kernel `blur_line' (2) for device 0
[opencl_create_kernel] successfully loaded kernel `blur_line_z' (3) for device 0
[opencl_create_kernel] successfully loaded kernel `slice' (4) for device 0
[opencl_create_kernel] successfully loaded kernel `slice_to_output' (5) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_column_1c' (6) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_transpose_1c' (7) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_column_4c' (8) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_transpose_4c' (9) for device 0
[opencl_create_kernel] successfully loaded kernel `interpolation_resample' (10) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_Lab' (11) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_RAW' (12) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_rgb' (13) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_Lab' (14) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_RAW' (15) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_rgb' (16) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_copy_alpha' (17) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_set_mask' (18) for device 0
[opencl_create_kernel] successfully loaded kernel `graduatedndp' (19) for device 0
[opencl_create_kernel] successfully loaded kernel `graduatedndm' (20) for device 0
[opencl_create_kernel] successfully loaded kernel `levels' (21) for device 0
[opencl_create_kernel] successfully loaded kernel `highlights_1f' (22) for device 0
[opencl_create_kernel] successfully loaded kernel `highlights_4f' (23) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_zero' (24) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_splat' (25) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_blur_line' (26) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_slice' (27) for device 0
[opencl_create_kernel] successfully loaded kernel `channelmixer' (28) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_precondition' (29) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_init' (30) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_dist' (31) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_horiz' (32) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_vert' (33) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_accu' (34) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_finish' (35) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_backtransform' (36) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_decompose' (37) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_synthesize' (38) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_reduce_first' (39) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_reduce_second' (40) for device 0
[opencl_create_kernel] successfully loaded kernel `eaw_decompose' (41) for device 0
[opencl_create_kernel] successfully loaded kernel `eaw_synthesize' (42) for device 0
[opencl_create_kernel] successfully loaded kernel `lowpass_mix' (43) for device 0
[opencl_create_kernel] successfully loaded kernel `colorcontrast' (44) for device 0
[opencl_create_kernel] successfully loaded kernel `colorcorrection' (45) for device 0
[opencl_create_kernel] successfully loaded kernel `colorbalance' (46) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_hblur' (47) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_vblur' (48) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_mix' (49) for device 0
[opencl_create_kernel] successfully loaded kernel `colorize' (50) for device 0
[opencl_create_kernel] successfully loaded kernel `overexposed' (51) for device 0
[opencl_create_kernel] successfully loaded kernel `vibrance' (52) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_threshold' (53) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_hblur' (54) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_vblur' (55) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_mix' (56) for device 0
[opencl_create_kernel] successfully loaded kernel `pixelmax_first' (57) for device 0
[opencl_create_kernel] successfully loaded kernel `pixelmax_second' (58) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_reinhard' (59) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_drago' (60) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_filmic' (61) for device 0
[opencl_create_kernel] successfully loaded kernel `rawprepare_1f' (62) for device 0
[opencl_create_kernel] successfully loaded kernel `rawprepare_4f' (63) for device 0
[opencl_create_kernel] successfully loaded kernel `vignette' (64) for device 0
[opencl_create_kernel] successfully loaded kernel `borders_fill' (65) for device 0
[opencl_create_kernel] successfully loaded kernel `relight' (66) for device 0
[opencl_create_kernel] successfully loaded kernel `tonecurve' (67) for device 0
[opencl_create_kernel] successfully loaded kernel `whitebalance_4f' (68) for device 0
[opencl_create_kernel] successfully loaded kernel `whitebalance_1f' (69) for device 0
[opencl_create_kernel] successfully loaded kernel `splittoning' (70) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom_demosaic_half_size' (71) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_green' (72) for device 0
[opencl_create_kernel] successfully loaded kernel `green_equilibration' (73) for device 0
[opencl_create_kernel] successfully loaded kernel `pre_median' (74) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_green_median' (75) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_redblue' (76) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom' (77) for device 0
[opencl_create_kernel] successfully loaded kernel `border_interpolate' (78) for device 0
[opencl_create_kernel] successfully loaded kernel `color_smoothing' (79) for device 0
[opencl_create_kernel] successfully loaded kernel `passthrough_monochrome' (80) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom_demosaic_passthrough_monochrome' (81) for device 0
[opencl_create_kernel] successfully loaded kernel `profilegamma' (82) for device 0
[opencl_create_kernel] successfully loaded kernel `colorout' (83) for device 0
[opencl_create_kernel] successfully loaded kernel `colorin_unbound' (84) for device 0
[opencl_create_kernel] successfully loaded kernel `colorin_clipping' (85) for device 0
[opencl_create_kernel] successfully loaded kernel `lowlight' (86) for device 0
[opencl_create_kernel] successfully loaded kernel `basecurve' (87) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_overexposed' (88) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_hblur' (89) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_vblur' (90) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_mix' (91) for device 0
[opencl_create_kernel] successfully loaded kernel `flip' (92) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_invert' (93) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_hblur' (94) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_vblur' (95) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_mix' (96) for device 0
[opencl_create_kernel] successfully loaded kernel `colormapping_histogram' (97) for device 0
[opencl_create_kernel] successfully loaded kernel `colormapping_mapping' (98) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_bilinear' (99) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_bicubic' (100) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_lanczos2' (101) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_lanczos3' (102) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_vignette' (103) for device 0
[opencl_create_kernel] successfully loaded kernel `colorzones' (104) for device 0
[opencl_create_kernel] successfully loaded kernel `colisa' (105) for device 0
[opencl_create_kernel] successfully loaded kernel `zonesystem' (106) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_bilinear' (107) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_bicubic' (108) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_lanczos2' (109) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_lanczos3' (110) for device 0
[opencl_create_kernel] successfully loaded kernel `monochrome_filter' (111) for device 0
[opencl_create_kernel] successfully loaded kernel `monochrome' (112) for device 0
[opencl_create_kernel] successfully loaded kernel `invert_1f' (113) for device 0
[opencl_create_kernel] successfully loaded kernel `invert_4f' (114) for device 0
[opencl_create_kernel] successfully loaded kernel `velvia' (115) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_init' (116) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_dist' (117) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_horiz' (118) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_vert' (119) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_accu' (120) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_finish' (121) for device 0
[opencl_create_kernel] successfully loaded kernel `exposure' (122) for device 0
[opencl_create_kernel] successfully loaded kernel `shadows_highlights_mix' (123) for device 0
[opencl_summary_statistics] device 'GeForce GT 620': NOT utilized
Ubuntu 18.04 + dt 2.6 & Pentax K5 & K3-II + cailloux Pentax et Sigma

Répondre
#2
Effectivement opencl n'est pas utilisé. C'est curieux, car il a fait tout le boulot de compil des 'noyaux' avant. Avec quand même un problème concernant l'ouverture du dossier sensé les contenir. Il y a aussi un pb concernant la taille de mémoire disponible : [opencl_init] device 0 `GeForce GT 620′ allows GPU memory allocations of up to 511MB

Comme ta carte annonce 2GB de mémoire il faudrait peut être forcer le paramètre opencl_memory_requirement dans ton fichier $HOME/.config/darktable/darktablerc
Concernant opencl et les réglages afférents, je te recommande la lecture du chapitre 10.2 du manuel de darktable.
Mes photos : jpverrue.fr
Répondre
#3
Le paquet nvidia-modprobe est installé ?
Répondre
#4
Merci jpv, c'est intéressant tout ça. Smile

Dans l'intervalle, j'ai installé la dernière version de nVidia CUDA, qui semble nécessaire pour faire fonctionner OpenCL avec une carte nVidia (il existe un package de la version 7.5 de CUDA pour les distros principales).

Depuis, nvidia-settings me montre une activité GPU, par exemple quand je switche d'espace de travail, et l'affichage me paraît globalement plus fluide, c'est déjà ça de gagné. Non pas que c'était lent, mais à présent plus fluide.

Avec la doc que tu m'as indiquée, j'ai pu avancer en (re)installant certains paquets.

nvidia-352                                                  352.63-0ubuntu0.15.10.1
nvidia-352-dev                                          352.63-0ubuntu0.15.10.1
nvidia-352-uvm                                        352.39-0ubuntu1
nvidia-libopencl1-352                              352.63-0ubuntu0.15.10.1
nvidia-modprobe                                      352.39-0ubuntu1
nvidia-opencl-dev:amd64                       6.5.14-2
nvidia-opencl-icd-352                              352.63-0ubuntu0.15.10.1
nvidia-prime                                              0.8.1
nvidia-settings                                           352.39-0ubuntu1

J'ai bien les modules du noyau :

nvidia_uvm             77824  0
nvidia               8646656  58 nvidia_uvm
drm                   360448  3 nvidia

et mes devices nvidia* (en rw pour ugo) :

crw-rw-rw- 1 root root 195,   0 juin  26 20:12 /dev/nvidia0
crw-rw-rw- 1 root root 195, 255 juin  26 20:12 /dev/nvidiactl
crw-rw-rw- 1 root root 246,   0 juin  26 20:12 /dev/nvidia-uvm

Après, opencl_memory_requirement sert à indiquer la limite basse en termes de RAM sur le GPU pour passer en OpenCL, plutôt que le monter à 2048, je l'ai descendu à 500, tenant compte de la ligne :

[opencl_init] device 0 `GeForce GT 620′ allows GPU memory allocations of up to 511MB

Je ne sais pas vraiment d'où sort cette limite... nvidia-settings m'indique de son côté, pour ce GPU :

Total Memory: 2048 MB
Total Dedicated Memory: 2047 MB
Used Dedicated Memory: 417 MB (20%)

La dernière valeur varie un peu tout le temps, je l'ai déjà vue au dessus de 511 Mo, par exemple en visualisation d'une vidéo...

Disons que j'ai mis 500 en tant que valeur inférieure à 511MB, pour éviter qu'OpenCL ne juge que la CG ne peut être utilisée faute de RAM suffisante...

Et comme vu dans la partie AMD/AIT de la doc, j'ai essayé de réduire <em>opencl_memory_headroom</em> à 0, manière de laisser le maximum de champs à DT.

Résultat ? <strong>Idem ! </strong>Sad

manu@manubuntu:~$ darktable-cltest
[opencl_init] opencl related configuration options:
[opencl_init]
[opencl_init] opencl: 1
[opencl_init] opencl_library: ''
[opencl_init] opencl_memory_requirement: 500
[opencl_init] opencl_memory_headroom: 0
[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] found opencl runtime library 'libOpenCL'
[opencl_init] opencl library 'libOpenCL' found on your system and loaded
[opencl_init] found 1 platform
[opencl_init] found 1 device
[opencl_init] device 0 `GeForce GT 620' has sm_20 support.
[opencl_init] device 0 `GeForce GT 620' supports image sizes of 16384 x 16384
[opencl_init] device 0 `GeForce GT 620' allows GPU memory allocations of up to 511MB
[opencl_init] device 0: GeForce GT 620
GLOBAL_MEM_SIZE:          2047MB
MAX_WORK_GROUP_SIZE:      1024
MAX_WORK_ITEM_DIMENSIONS: 3
MAX_WORK_ITEM_SIZES:      [ 1024 1024 64 ]
DRIVER_VERSION:           352.63
DEVICE_VERSION:           OpenCL 1.1 CUDA
[opencl_init] compiling program `demosaic_ppg.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/demosaic_ppg.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/demosaic_ppg.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `atrous.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/atrous.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/atrous.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `basic.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/basic.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/basic.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `blendop.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/blendop.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/blendop.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `highpass.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/highpass.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/highpass.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `nlmeans.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/nlmeans.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/nlmeans.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `gaussian.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/gaussian.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/gaussian.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `sharpen.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/sharpen.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/sharpen.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `extended.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/extended.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/extended.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `soften.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/soften.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/soften.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `bilateral.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/bilateral.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/bilateral.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `denoiseprofile.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/denoiseprofile.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/denoiseprofile.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `bloom.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/bloom.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/bloom.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `colorreconstruction.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/colorreconstruction.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/colorreconstruction.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] compiling program `demosaic_other.cl' ..
[opencl_load_program] loaded cached binary program from file `/home/manu/.cache/darktable/cached_kernels_for_GeForceGT620/demosaic_other.cl.bin'
[opencl_load_program] successfully loaded program from `/usr/share/darktable/kernels/demosaic_other.cl'
[opencl_build_program] successfully built program
[opencl_build_program] BUILD STATUS: 0
BUILD LOG:

[opencl_init] kernel loading time: 21.9250
[opencl_init] OpenCL successfully initialized.
[opencl_init] here are the internal numbers and names of OpenCL devices available to darktable:
[opencl_init]        0    'GeForce GT 620'
[opencl_init] these are your device priorities:
[opencl_init]         image    preview    export    thumbnail
[opencl_init]        0    -1    0    0
[opencl_init] FINALLY: opencl is AVAILABLE on this system.
[opencl_init] initial status of opencl enabled flag is ON.
[opencl_create_kernel] successfully loaded kernel `zero' (0) for device 0
[opencl_create_kernel] successfully loaded kernel `splat' (1) for device 0
[opencl_create_kernel] successfully loaded kernel `blur_line' (2) for device 0
[opencl_create_kernel] successfully loaded kernel `blur_line_z' (3) for device 0
[opencl_create_kernel] successfully loaded kernel `slice' (4) for device 0
[opencl_create_kernel] successfully loaded kernel `slice_to_output' (5) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_column_1c' (6) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_transpose_1c' (7) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_column_4c' (8) for device 0
[opencl_create_kernel] successfully loaded kernel `gaussian_transpose_4c' (9) for device 0
[opencl_create_kernel] successfully loaded kernel `interpolation_resample' (10) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_Lab' (11) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_RAW' (12) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_mask_rgb' (13) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_Lab' (14) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_RAW' (15) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_rgb' (16) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_copy_alpha' (17) for device 0
[opencl_create_kernel] successfully loaded kernel `blendop_set_mask' (18) for device 0
[opencl_create_kernel] successfully loaded kernel `graduatedndp' (19) for device 0
[opencl_create_kernel] successfully loaded kernel `graduatedndm' (20) for device 0
[opencl_create_kernel] successfully loaded kernel `levels' (21) for device 0
[opencl_create_kernel] successfully loaded kernel `highlights_1f' (22) for device 0
[opencl_create_kernel] successfully loaded kernel `highlights_4f' (23) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_zero' (24) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_splat' (25) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_blur_line' (26) for device 0
[opencl_create_kernel] successfully loaded kernel `colorreconstruction_slice' (27) for device 0
[opencl_create_kernel] successfully loaded kernel `channelmixer' (28) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_precondition' (29) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_init' (30) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_dist' (31) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_horiz' (32) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_vert' (33) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_accu' (34) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_finish' (35) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_backtransform' (36) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_decompose' (37) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_synthesize' (38) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_reduce_first' (39) for device 0
[opencl_create_kernel] successfully loaded kernel `denoiseprofile_reduce_second' (40) for device 0
[opencl_create_kernel] successfully loaded kernel `eaw_decompose' (41) for device 0
[opencl_create_kernel] successfully loaded kernel `eaw_synthesize' (42) for device 0
[opencl_create_kernel] successfully loaded kernel `lowpass_mix' (43) for device 0
[opencl_create_kernel] successfully loaded kernel `colorcontrast' (44) for device 0
[opencl_create_kernel] successfully loaded kernel `colorcorrection' (45) for device 0
[opencl_create_kernel] successfully loaded kernel `colorbalance' (46) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_hblur' (47) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_vblur' (48) for device 0
[opencl_create_kernel] successfully loaded kernel `sharpen_mix' (49) for device 0
[opencl_create_kernel] successfully loaded kernel `colorize' (50) for device 0
[opencl_create_kernel] successfully loaded kernel `overexposed' (51) for device 0
[opencl_create_kernel] successfully loaded kernel `vibrance' (52) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_threshold' (53) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_hblur' (54) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_vblur' (55) for device 0
[opencl_create_kernel] successfully loaded kernel `bloom_mix' (56) for device 0
[opencl_create_kernel] successfully loaded kernel `pixelmax_first' (57) for device 0
[opencl_create_kernel] successfully loaded kernel `pixelmax_second' (58) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_reinhard' (59) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_drago' (60) for device 0
[opencl_create_kernel] successfully loaded kernel `global_tonemap_filmic' (61) for device 0
[opencl_create_kernel] successfully loaded kernel `rawprepare_1f' (62) for device 0
[opencl_create_kernel] successfully loaded kernel `rawprepare_4f' (63) for device 0
[opencl_create_kernel] successfully loaded kernel `vignette' (64) for device 0
[opencl_create_kernel] successfully loaded kernel `borders_fill' (65) for device 0
[opencl_create_kernel] successfully loaded kernel `relight' (66) for device 0
[opencl_create_kernel] successfully loaded kernel `tonecurve' (67) for device 0
[opencl_create_kernel] successfully loaded kernel `whitebalance_4f' (68) for device 0
[opencl_create_kernel] successfully loaded kernel `whitebalance_1f' (69) for device 0
[opencl_create_kernel] successfully loaded kernel `splittoning' (70) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom_demosaic_half_size' (71) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_green' (72) for device 0
[opencl_create_kernel] successfully loaded kernel `green_equilibration' (73) for device 0
[opencl_create_kernel] successfully loaded kernel `pre_median' (74) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_green_median' (75) for device 0
[opencl_create_kernel] successfully loaded kernel `ppg_demosaic_redblue' (76) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom' (77) for device 0
[opencl_create_kernel] successfully loaded kernel `border_interpolate' (78) for device 0
[opencl_create_kernel] successfully loaded kernel `color_smoothing' (79) for device 0
[opencl_create_kernel] successfully loaded kernel `passthrough_monochrome' (80) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_and_zoom_demosaic_passthrough_monochrome' (81) for device 0
[opencl_create_kernel] successfully loaded kernel `profilegamma' (82) for device 0
[opencl_create_kernel] successfully loaded kernel `colorout' (83) for device 0
[opencl_create_kernel] successfully loaded kernel `colorin_unbound' (84) for device 0
[opencl_create_kernel] successfully loaded kernel `colorin_clipping' (85) for device 0
[opencl_create_kernel] successfully loaded kernel `lowlight' (86) for device 0
[opencl_create_kernel] successfully loaded kernel `basecurve' (87) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_overexposed' (88) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_hblur' (89) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_vblur' (90) for device 0
[opencl_create_kernel] successfully loaded kernel `soften_mix' (91) for device 0
[opencl_create_kernel] successfully loaded kernel `flip' (92) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_invert' (93) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_hblur' (94) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_vblur' (95) for device 0
[opencl_create_kernel] successfully loaded kernel `highpass_mix' (96) for device 0
[opencl_create_kernel] successfully loaded kernel `colormapping_histogram' (97) for device 0
[opencl_create_kernel] successfully loaded kernel `colormapping_mapping' (98) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_bilinear' (99) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_bicubic' (100) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_lanczos2' (101) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_distort_lanczos3' (102) for device 0
[opencl_create_kernel] successfully loaded kernel `lens_vignette' (103) for device 0
[opencl_create_kernel] successfully loaded kernel `colorzones' (104) for device 0
[opencl_create_kernel] successfully loaded kernel `colisa' (105) for device 0
[opencl_create_kernel] successfully loaded kernel `zonesystem' (106) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_bilinear' (107) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_bicubic' (108) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_lanczos2' (109) for device 0
[opencl_create_kernel] successfully loaded kernel `clip_rotate_lanczos3' (110) for device 0
[opencl_create_kernel] successfully loaded kernel `monochrome_filter' (111) for device 0
[opencl_create_kernel] successfully loaded kernel `monochrome' (112) for device 0
[opencl_create_kernel] successfully loaded kernel `invert_1f' (113) for device 0
[opencl_create_kernel] successfully loaded kernel `invert_4f' (114) for device 0
[opencl_create_kernel] successfully loaded kernel `velvia' (115) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_init' (116) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_dist' (117) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_horiz' (118) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_vert' (119) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_accu' (120) for device 0
[opencl_create_kernel] successfully loaded kernel `nlmeans_finish' (121) for device 0
[opencl_create_kernel] successfully loaded kernel `exposure' (122) for device 0
[opencl_create_kernel] successfully loaded kernel `shadows_highlights_mix' (123) for device 0
[opencl_summary_statistics] device 'GeForce GT 620': NOT utilized
Ubuntu 18.04 + dt 2.6 & Pentax K5 & K3-II + cailloux Pentax et Sigma

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#5
Je viens d'écrire à darktable-devel@lists.sourceforge.net pour avoir leur avis...
Ubuntu 18.04 + dt 2.6 & Pentax K5 & K3-II + cailloux Pentax et Sigma

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#6
Sauf que cette adresse mail n'existe pas... Sad(
Ubuntu 18.04 + dt 2.6 & Pentax K5 & K3-II + cailloux Pentax et Sigma

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#7
Finalement un coup d'IRC et bon, cette ligne à la fin est trompeuse.
Citation :means that the given device was not used to run any kernels during the run of current executable, which is totally expected because dt-cltest does not run any kernels
En fait, le GPU est bien utilisé, ça se voit avec un lancement en mode console par darktable -d perf -d opencl

Restera à faire quelques tests, rigoureux, pour voir si OpenCL apporte vraiment qqch.

À vue de nez comme ça, je dirais "plutôt oui", mais pas super flagrant avec cette config.
Ubuntu 18.04 + dt 2.6 & Pentax K5 & K3-II + cailloux Pentax et Sigma

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#8
Les adresses mail des listes de diffusion ont changé depuis quelque temps déjà.

Pour liste 'développeurs' : darktable-dev@lists.darktable.org

Et pour la liste 'utilisateurs'  : darktable-user@lists.darktable.org
Mes photos : jpverrue.fr
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#9
Effectivement c'est un peu vicieux comme message !
Mes photos : jpverrue.fr
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#10
Pour mesurer l'efficacité tu fais  un run avec darktable -d opencl -d perf  et un autre avec darktable ---disable-opencl -d perf et tu exportes la même photo à chaque fois. Tu devrais obtenir dans le log le total de temps de traitement dans les deux cas et ainsi pouvoir les comparer
Mes photos : jpverrue.fr
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