27-06-16, 14:33
Merci jpv, c'est intéressant tout ça. 
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>
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
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>
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
dt stable / Ubuntu 22.04