[RÉSOLU] OpenCl non disponible

Utilisation du logiciel Chambre Noire
1

Bonjour,

J’ai réussi à installer l’openCL sur mon système :
Système d’exploitation : KDE neon User Edition
Version de KDE Plasma : 6.6.4
Version de KDE Frameworks : 6.24.0
Version de Qt : 6.10.2
Version de noyau : 6.17.0-20-generic (64-bit)
Plate-forme graphique : Wayland
Processeurs : 20 × Intel® Core™ Ultra 7 265T
Mémoire : 32 Gio de mémoire vive (30,6 Gio de RAM utilisable)
Processeur graphique : Intel® Graphics
Fabricant : ASUS

OpenCL :
Number of platforms 1
Platform Name Intel(R) OpenCL Graphics
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 3.0
Platform Profile FULL_PROFILE

Mais il n’est toujours pas disponible dans les préférences de darktable 5.5 version master OBS.
Cela ne m’empêche pas de fonctionner correctement mais c’est dommage.
Merci pour vos réponses.

2

Bonjour,

Que donne :

darktable-cltest

Peux-tu poster ici (dans un bloc Code, la feuille avec <> dans les icônes) ce que rend cette commande ?

3

Merci pour ta réponse rapide.

[code]zakfm@zak:~$ darktable-cltest
darktable 5.5.0~git225.0927dd14-1+13677.1
Copyright (C) 2012-2026 Johannes Hanika and other contributors.

Compile options:
Bit depth → 64 bit
Exiv2 → 0.27.6
Lensfun → 0.3.4
Debug → DISABLED
SSE2 optimizations → ENABLED
OpenMP → ENABLED
OpenCL → ENABLED
Lua → ENABLED - API version 9.6.0
Colord → ENABLED
gPhoto2 → ENABLED
OSMGpsMap → ENABLED - map view is available
GMIC → ENABLED - Compressed LUTs are supported
GraphicsMagick → ENABLED
ImageMagick → DISABLED
libavif → DISABLED
libheif → ENABLED
libjxl → ENABLED
LibRaw → ENABLED - Version 0.22.0-Release
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.

[opencl_init] opencl disabled via darktable preferences
[opencl_init] opencl library ‹ libOpenCL › found on your system and loaded, preference ‹ default path ›
[opencl_init] found 1 platform
[check platform] platform ‹ Intel(R) OpenCL Graphics › with key ‹ clplatform_intelropenclgraphics › is NOT active
[opencl_init] found 0 device
[opencl_init] FINALLY: opencl PREFERENCE=NO is NOT AVAILABLE and NOT ENABLED
zakfm@zak:~$[/code]

Et si j’active le pilote openCL Intel GPU, darktable ne démarre plus du tout.

4

Bonsoir, il me semble que Intel Grapics n’est pris en charge qu’a partir de la génération 8 des processeurs Intel !

5

BonjourJean-Paul,
Le processeur Intel Core Ultra 7 265T intègre un iGPU Intel Arc Xe‑LPG.
Cette architecture est la première génération d’iGPU d’Intel après les générations 8 e (HD 620/630) et 9 e (Xe‑LP).
Il se peut justement qu’il soit trop moderne pour les mises à jours logiciels.

6

Bonjour, là je ne connais pas cette architecture, c’est juste le 7 qui m’a interpelé, désolé ! Possible effectivement que les drivers ne soit pas pris en charge pour toutes les versions de systèmes d’exploitation ou juste par certaines versions de Linux !
Là, il va falloir faire des recherches, j’ai vu qu’il supporte l’OpenGl et n’ai rien vu pour l’OpenCl !

7

J’utilise le gpu intégré d’un processeur Intel core I7 de 12ème génération (Intel® UHD Graphics 770), pas de problème avec les drivers. Mais ce n’est pas le même GPU dont tu parles, c’est un Intel ARC et pour celui-ci, je ne sais pas s’il existe un driver sous Linux pour ce GPU

8

Si ça peut aider :

[code]zakfm@zak:~$ lspci
00:00.0 Host bridge: Intel Corporation Device 7d1b (rev 01)
00:01.0 PCI bridge: Intel Corporation Device 7ecc (rev 10)
00:02.0 VGA compatible controller: Intel Corporation Arrow Lake-U [Intel Graphics] (rev 06)
00:04.0 Signal processing controller: Intel Corporation Device ad03 (rev 01)
00:06.0 PCI bridge: Intel Corporation Device ae4d (rev 10)
00:07.0 PCI bridge: Intel Corporation Meteor Lake-P Thunderbolt 4 PCI Express Root Port #0 (rev 10)
00:07.1 PCI bridge: Intel Corporation Meteor Lake-P Thunderbolt 4 PCI Express Root Port #1 (rev 10)
00:08.0 System peripheral: Intel Corporation Device ae4c (rev 10)
00:0a.0 Signal processing controller: Intel Corporation Device ad0d (rev 01)
00:0b.0 Processing accelerators: Intel Corporation Arrow Lake NPU (rev 01)
00:0d.0 USB controller: Intel Corporation Meteor Lake-P Thunderbolt 4 USB Controller (rev 10)
00:0d.2 USB controller: Intel Corporation Meteor Lake-P Thunderbolt 4 NHI #0 (rev 10)
00:0e.0 RAID bus controller: Intel Corporation Volume Management Device NVMe RAID Controller Intel Corporation
00:14.0 RAM memory: Intel Corporation Device ae7f (rev 10)
00:1f.0 ISA bridge: Intel Corporation Device ae0d (rev 10)
00:1f.5 Serial bus controller: Intel Corporation Device ae23 (rev 10)
01:00.0 Non-Volatile memory controller: Shenzhen Longsys Electronics Co., Ltd. Lexar NM610 PRO NVME SSD (DRAM-less) (rev 01)
80:14.0 USB controller: Intel Corporation Device 7f6e (rev 10)
80:14.5 Non-VGA unclassified device: Intel Corporation Device 7f2f (rev 10)
80:15.0 Serial bus controller: Intel Corporation Device 7f4c (rev 10)
80:15.1 Serial bus controller: Intel Corporation Device 7f4d (rev 10)
80:15.2 Serial bus controller: Intel Corporation Device 7f4e (rev 10)
80:16.0 Communication controller: Intel Corporation Device 7f68 (rev 10)
80:17.0 SATA controller: Intel Corporation Device 7f62 (rev 10)
80:1b.0 PCI bridge: Intel Corporation Device 7f44 (rev 10)
80:1c.0 PCI bridge: Intel Corporation Device 7f38 (rev 10)
80:1c.2 PCI bridge: Intel Corporation Device 7f3a (rev 10)
80:1c.3 PCI bridge: Intel Corporation Device 7f3b (rev 10)
80:1d.0 PCI bridge: Intel Corporation Device 7f36 (rev 10)
80:1f.0 ISA bridge: Intel Corporation Device 7f06 (rev 10)
80:1f.3 Audio device: Intel Corporation Device 7f50 (rev 10)
80:1f.4 SMBus: Intel Corporation Device 7f23 (rev 10)
80:1f.5 Serial bus controller: Intel Corporation Device 7f24 (rev 10)
83:00.0 Ethernet controller: Intel Corporation Ethernet Controller I226-V (rev 06)
84:00.0 Network controller: MEDIATEK Corp. Device 7925
zakfm@zak:~$

[/code]

9

Je pencherais pour un driver pas au niveau par rapport au iGPU.

Que donne :

sudo lshw -C video | grep driver

Tu pourrais avoir besoin de faire un tour sur ce site d’Intel pour chercher le bon driver pour ce modèle précis d’iGPU, éventuellement…

10

zakfm@zak:~$ sudo lshw -C video | grep driver [sudo] Mot de passe de zakfm : configuration: depth=32 driver=i915 latency=0 mode=3840x2160 resolution=3840,2160 visual=truecolor xres=3840 yres=2160 zakfm@zak:~$
[hr]

Réponse de qwant :

11

OK, je vois que KDE neon user edition est basé sur Ubuntu, il se peut qu’il y ait un souci du côté du pilote i915…

C’est délicat à distance, d’autant qu’en fonction des manips, parfois on se retrouve sans display (rebooter en mode sans erreur).

Un autre lien éventuellement : https://thedroidguy.com/install-latest-intel-graphics-drivers-on-linux-for-optimal-performance-1263100

12

Merci pour le lien, mais comme tu dis « parfois on se retrouve sans display », c’est d’ailleurs à cette occasion que j’ai réinstallé neon à la place de Kubuntu dans l’espoir d’avoir des drivers plus à jour, en vain.

13

Bonjour,
La commande « clinfo »(dans une console) peut peut-être donner des infos sur le driver.
Cordialement.

14

[code]zakfm@zak:~$ clinfo
Number of platforms 1
Platform Name Intel(R) OpenCL Graphics
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 3.0
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_byte_addressable_store cl_khr_device_uuid cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_command_queue_families cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_subgroup_extended_types cl_khr_subgroup_non_uniform_vote cl_khr_subgroup_ballot cl_khr_subgroup_non_uniform_arithmetic cl_khr_subgroup_shuffle cl_khr_subgroup_shuffle_relative cl_khr_subgroup_clustered_reduce cl_intel_device_attribute_query cl_khr_suggested_local_work_size cl_intel_split_work_group_barrier cl_khr_fp64 cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_linkonce_odr cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_ext_float_atomics cl_khr_external_memory cl_intel_planar_yuv cl_intel_packed_yuv cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_3d_image_writes cl_intel_media_block_io cl_intel_create_buffer_with_properties cl_intel_dot_accumulate cl_intel_subgroup_local_block_io cl_khr_integer_dot_product cl_khr_gl_sharing cl_khr_gl_depth_images cl_khr_gl_event cl_khr_gl_msaa_sharing cl_intel_va_api_media_sharing cl_intel_sharing_format_query cl_khr_pci_bus_info
Platform Extensions with Version cl_khr_byte_addressable_store 0x400000 (1.0.0)
cl_khr_device_uuid 0x400000 (1.0.0)
cl_khr_fp16 0x400000 (1.0.0)
cl_khr_global_int32_base_atomics 0x400000 (1.0.0)
cl_khr_global_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_icd 0x400000 (1.0.0)
cl_khr_local_int32_base_atomics 0x400000 (1.0.0)
cl_khr_local_int32_extended_atomics 0x400000 (1.0.0)
cl_intel_command_queue_families 0x400000 (1.0.0)
cl_intel_subgroups 0x400000 (1.0.0)
cl_intel_required_subgroup_size 0x400000 (1.0.0)
cl_intel_subgroups_short 0x400000 (1.0.0)
cl_khr_spir 0x400000 (1.0.0)
cl_intel_accelerator 0x400000 (1.0.0)
cl_intel_driver_diagnostics 0x400000 (1.0.0)
cl_khr_priority_hints 0x400000 (1.0.0)
cl_khr_throttle_hints 0x400000 (1.0.0)
cl_khr_create_command_queue 0x400000 (1.0.0)
cl_intel_subgroups_char 0x400000 (1.0.0)
cl_intel_subgroups_long 0x400000 (1.0.0)
cl_khr_il_program 0x400000 (1.0.0)
cl_intel_mem_force_host_memory 0x400000 (1.0.0)
cl_khr_subgroup_extended_types 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_vote 0x400000 (1.0.0)
cl_khr_subgroup_ballot 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_arithmetic 0x400000 (1.0.0)
cl_khr_subgroup_shuffle 0x400000 (1.0.0)
cl_khr_subgroup_shuffle_relative 0x400000 (1.0.0)
cl_khr_subgroup_clustered_reduce 0x400000 (1.0.0)
cl_intel_device_attribute_query 0x400000 (1.0.0)
cl_khr_suggested_local_work_size 0x400000 (1.0.0)
cl_intel_split_work_group_barrier 0x400000 (1.0.0)
cl_khr_fp64 0x400000 (1.0.0)
cl_intel_spirv_media_block_io 0x400000 (1.0.0)
cl_intel_spirv_subgroups 0x400000 (1.0.0)
cl_khr_spirv_linkonce_odr 0x400000 (1.0.0)
cl_khr_spirv_no_integer_wrap_decoration 0x400000 (1.0.0)
cl_intel_unified_shared_memory 0x400000 (1.0.0)
cl_khr_mipmap_image 0x400000 (1.0.0)
cl_khr_mipmap_image_writes 0x400000 (1.0.0)
cl_ext_float_atomics 0x400000 (1.0.0)
cl_khr_external_memory 0x400000 (1.0.0)
cl_intel_planar_yuv 0x400000 (1.0.0)
cl_intel_packed_yuv 0x400000 (1.0.0)
cl_khr_int64_base_atomics 0x400000 (1.0.0)
cl_khr_int64_extended_atomics 0x400000 (1.0.0)
cl_khr_image2d_from_buffer 0x400000 (1.0.0)
cl_khr_depth_images 0x400000 (1.0.0)
cl_khr_3d_image_writes 0x400000 (1.0.0)
cl_intel_media_block_io 0x400000 (1.0.0)
cl_intel_create_buffer_with_properties 0x400000 (1.0.0)
cl_intel_dot_accumulate 0x400000 (1.0.0)
cl_intel_subgroup_local_block_io 0x400000 (1.0.0)
cl_khr_integer_dot_product 0x800000 (2.0.0)
cl_khr_gl_sharing 0x400000 (1.0.0)
cl_khr_gl_depth_images 0x400000 (1.0.0)
cl_khr_gl_event 0x400000 (1.0.0)
cl_khr_gl_msaa_sharing 0x400000 (1.0.0)
cl_intel_va_api_media_sharing 0x400000 (1.0.0)
cl_intel_sharing_format_query 0x400000 (1.0.0)
cl_khr_pci_bus_info 0x400000 (1.0.0)
Platform Numeric Version 0xc00000 (3.0.0)
Platform Extensions function suffix INTEL
Platform Host timer resolution 1ns
Platform External memory handle types DMA buffer

Platform Name Intel(R) OpenCL Graphics
Number of devices 1
Device Name Intel(R) Graphics [0x7d67]
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 3.0 NEO
Device UUID 8680677d-0600-0000-0002-000000000000
Driver UUID 32332e34-332e-3032-3736-343200000000
Valid Device LUID No
Device LUID d011-168efe7f0000
Device Node Mask 0
Device Numeric Version 0xc00000 (3.0.0)
Driver Version 23.43.027642
Device OpenCL C Version OpenCL C 1.2
Device OpenCL C all versions OpenCL C 0x400000 (1.0.0)
OpenCL C 0x401000 (1.1.0)
OpenCL C 0x402000 (1.2.0)
OpenCL C 0xc00000 (3.0.0)
Device OpenCL C features __opencl_c_int64 0xc00000 (3.0.0)
__opencl_c_3d_image_writes 0xc00000 (3.0.0)
__opencl_c_images 0xc00000 (3.0.0)
__opencl_c_read_write_images 0xc00000 (3.0.0)
__opencl_c_atomic_order_acq_rel 0xc00000 (3.0.0)
__opencl_c_atomic_order_seq_cst 0xc00000 (3.0.0)
__opencl_c_atomic_scope_all_devices 0xc00000 (3.0.0)
__opencl_c_atomic_scope_device 0xc00000 (3.0.0)
__opencl_c_generic_address_space 0xc00000 (3.0.0)
__opencl_c_program_scope_global_variables 0xc00000 (3.0.0)
__opencl_c_work_group_collective_functions 0xc00000 (3.0.0)
__opencl_c_subgroups 0xc00000 (3.0.0)
__opencl_c_ext_fp32_global_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp32_local_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp32_global_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp32_local_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp16_global_atomic_load_store 0xc00000 (3.0.0)
__opencl_c_ext_fp16_local_atomic_load_store 0xc00000 (3.0.0)
__opencl_c_ext_fp16_global_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp16_local_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_fp64 0xc00000 (3.0.0)
__opencl_c_ext_fp64_global_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp64_local_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp64_global_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp64_local_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_integer_dot_product_input_4x8bit 0xc00000 (3.0.0)
__opencl_c_integer_dot_product_input_4x8bit_packed 0xc00000 (3.0.0)
Latest conformance test passed v2023-05-16-00
Device Type GPU
Device PCI bus info (KHR) PCI-E, 0000:00:02.0
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 64
Max clock frequency 1950MHz
Device IP (Intel) 0x3118000 (12.280.0)
Device ID (Intel) 32103
Slices (Intel) 1
Sub-slices per slice (Intel) 4
EUs per sub-slice (Intel) 16
Threads per EU (Intel) 8
Feature capabilities (Intel) DP4A
Device Partition (core)
Max number of sub-devices 0
Supported partition types None
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 1024x1024x1024
Max work group size 1024
Preferred work group size multiple (device) 64
=== CL_PROGRAM_BUILD_LOG ===
IGC: Internal Compiler Error: Segmentation violation Preferred work group size multiple (kernel) <getWGsizes:1980: create kernel : error -45>
Max sub-groups per work group 128
Sub-group sizes (Intel) 8, 16, 32
Preferred / native vector sizes
char 16 / 16
short 8 / 8
int 4 / 4
long 1 / 1
half 8 / 8 (cl_khr_fp16)
float 1 / 1
double 1 / 1 (cl_khr_fp64)
Half-precision Floating-point support (cl_khr_fp16)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations Yes
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 64, Little-Endian
External memory handle types DMA buffer
Global memory size 30432698368 (28.34GiB)
Error Correction support No
Max memory allocation 4294959104 (4GiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing No
Fine-grained system sharing No
Atomics No
Unified Shared Memory (USM) (cl_intel_unified_shared_memory)
Host USM capabilities (Intel) USM access, USM atomic access
Device USM capabilities (Intel) USM access, USM atomic access
Single-Device USM caps (Intel) USM access, USM atomic access
Cross-Device USM caps (Intel) USM access, USM atomic access
Shared System USM caps (Intel) (n/a)
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 64 bytes
Global 64 bytes
Local 64 bytes
Atomic memory capabilities relaxed, acquire/release, sequentially-consistent, work-group scope, device scope, all-devices scope
Atomic fence capabilities relaxed, acquire/release, sequentially-consistent, work-item scope, work-group scope, device scope, all-devices scope
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 4294959104 (4GiB)
Global Memory cache type Read/Write
Global Memory cache size 4194304 (4MiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 268434944 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 4 bytes
Pitch alignment for 2D image buffers 4 pixels
Max 2D image size 16384x16384 pixels
Max planar YUV image size 16384x16128 pixels
Max 3D image size 16384x16384x2048 pixels
Max number of read image args 128
Max number of write image args 128
Max number of read/write image args 128
Pipe support No
Max number of pipe args 0
Max active pipe reservations 0
Max pipe packet size 0
Local memory type Local
Local memory size 65536 (64KiB)
Max number of constant args 8
Max constant buffer size 4294959104 (4GiB)
Generic address space support Yes
Max size of kernel argument 2048 (2KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Device enqueue capabilities (n/a)
Queue properties (on device)
Out-of-order execution No
Profiling No
Preferred size 0
Max size 0
Max queues on device 0
Max events on device 0
Device queue families ccs (1)
Queue properties Out-of-order execution, Profiling
Capabilities create single-queue events, create cross-queue events
rcs (1)
Queue properties Out-of-order execution, Profiling
Capabilities create single-queue events, create cross-queue events
bcs (1)
Queue properties Out-of-order execution, Profiling
Capabilities create single-queue events, create cross-queue events
Prefer user sync for interop Yes
Profiling timer resolution 52ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Non-uniform work-groups Yes
Work-group collective functions Yes
Sub-group independent forward progress No
IL version SPIR-V_1.2
ILs with version SPIR-V 0x402000 (1.2.0)
SPIR versions 1.2
printf() buffer size 4194304 (4MiB)
Built-in kernels (n/a)
Built-in kernels with version (n/a)
Device Extensions cl_khr_byte_addressable_store cl_khr_device_uuid cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_command_queue_families cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_subgroup_extended_types cl_khr_subgroup_non_uniform_vote cl_khr_subgroup_ballot cl_khr_subgroup_non_uniform_arithmetic cl_khr_subgroup_shuffle cl_khr_subgroup_shuffle_relative cl_khr_subgroup_clustered_reduce cl_intel_device_attribute_query cl_khr_suggested_local_work_size cl_intel_split_work_group_barrier cl_khr_fp64 cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_linkonce_odr cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_ext_float_atomics cl_khr_external_memory cl_intel_planar_yuv cl_intel_packed_yuv cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_3d_image_writes cl_intel_media_block_io cl_intel_create_buffer_with_properties cl_intel_dot_accumulate cl_intel_subgroup_local_block_io cl_khr_integer_dot_product cl_khr_gl_sharing cl_khr_gl_depth_images cl_khr_gl_event cl_khr_gl_msaa_sharing cl_intel_va_api_media_sharing cl_intel_sharing_format_query cl_khr_pci_bus_info
Device Extensions with Version cl_khr_byte_addressable_store 0x400000 (1.0.0)
cl_khr_device_uuid 0x400000 (1.0.0)
cl_khr_fp16 0x400000 (1.0.0)
cl_khr_global_int32_base_atomics 0x400000 (1.0.0)
cl_khr_global_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_icd 0x400000 (1.0.0)
cl_khr_local_int32_base_atomics 0x400000 (1.0.0)
cl_khr_local_int32_extended_atomics 0x400000 (1.0.0)
cl_intel_command_queue_families 0x400000 (1.0.0)
cl_intel_subgroups 0x400000 (1.0.0)
cl_intel_required_subgroup_size 0x400000 (1.0.0)
cl_intel_subgroups_short 0x400000 (1.0.0)
cl_khr_spir 0x400000 (1.0.0)
cl_intel_accelerator 0x400000 (1.0.0)
cl_intel_driver_diagnostics 0x400000 (1.0.0)
cl_khr_priority_hints 0x400000 (1.0.0)
cl_khr_throttle_hints 0x400000 (1.0.0)
cl_khr_create_command_queue 0x400000 (1.0.0)
cl_intel_subgroups_char 0x400000 (1.0.0)
cl_intel_subgroups_long 0x400000 (1.0.0)
cl_khr_il_program 0x400000 (1.0.0)
cl_intel_mem_force_host_memory 0x400000 (1.0.0)
cl_khr_subgroup_extended_types 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_vote 0x400000 (1.0.0)
cl_khr_subgroup_ballot 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_arithmetic 0x400000 (1.0.0)
cl_khr_subgroup_shuffle 0x400000 (1.0.0)
cl_khr_subgroup_shuffle_relative 0x400000 (1.0.0)
cl_khr_subgroup_clustered_reduce 0x400000 (1.0.0)
cl_intel_device_attribute_query 0x400000 (1.0.0)
cl_khr_suggested_local_work_size 0x400000 (1.0.0)
cl_intel_split_work_group_barrier 0x400000 (1.0.0)
cl_khr_fp64 0x400000 (1.0.0)
cl_intel_spirv_media_block_io 0x400000 (1.0.0)
cl_intel_spirv_subgroups 0x400000 (1.0.0)
cl_khr_spirv_linkonce_odr 0x400000 (1.0.0)
cl_khr_spirv_no_integer_wrap_decoration 0x400000 (1.0.0)
cl_intel_unified_shared_memory 0x400000 (1.0.0)
cl_khr_mipmap_image 0x400000 (1.0.0)
cl_khr_mipmap_image_writes 0x400000 (1.0.0)
cl_ext_float_atomics 0x400000 (1.0.0)
cl_khr_external_memory 0x400000 (1.0.0)
cl_intel_planar_yuv 0x400000 (1.0.0)
cl_intel_packed_yuv 0x400000 (1.0.0)
cl_khr_int64_base_atomics 0x400000 (1.0.0)
cl_khr_int64_extended_atomics 0x400000 (1.0.0)
cl_khr_image2d_from_buffer 0x400000 (1.0.0)
cl_khr_depth_images 0x400000 (1.0.0)
cl_khr_3d_image_writes 0x400000 (1.0.0)
cl_intel_media_block_io 0x400000 (1.0.0)
cl_intel_create_buffer_with_properties 0x400000 (1.0.0)
cl_intel_dot_accumulate 0x400000 (1.0.0)
cl_intel_subgroup_local_block_io 0x400000 (1.0.0)
cl_khr_integer_dot_product 0x800000 (2.0.0)
cl_khr_gl_sharing 0x400000 (1.0.0)
cl_khr_gl_depth_images 0x400000 (1.0.0)
cl_khr_gl_event 0x400000 (1.0.0)
cl_khr_gl_msaa_sharing 0x400000 (1.0.0)
cl_intel_va_api_media_sharing 0x400000 (1.0.0)
cl_intel_sharing_format_query 0x400000 (1.0.0)
cl_khr_pci_bus_info 0x400000 (1.0.0)

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, …) Intel(R) OpenCL Graphics
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, …) Success [INTEL]
clCreateContext(NULL, …) [default] Success [INTEL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name Intel(R) OpenCL Graphics
Device Name Intel(R) Graphics [0x7d67]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name Intel(R) OpenCL Graphics
Device Name Intel(R) Graphics [0x7d67]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
Platform Name Intel(R) OpenCL Graphics
Device Name Intel(R) Graphics [0x7d67]

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
zakfm@zak:~$
[/code]

15

Bonjour,

Je crois que j’ai peut-être la réponse… En consultant la doc à cette page, je lis tout à la fin :

Serais-tu dans ce cas avec ce iGPU, soit un GPU intégré au CPU ?

Facile à vérifier : darktable arrêté tu édites le fichier ~/.config/darktable/darktablerc pour passer opencl_use_cpu_devices à true (doit être à false actuellement).

Et tu relances dt.

16

Bon,
difficile à interpréter,
tout « semble » analogue à chez moi, sauf une ligne faisant référence à une grosse erreur de compilation.

=== CL_PROGRAM_BUILD_LOG ===
IGC: Internal Compiler Error: Segmentation violation Preferred work group size multiple (kernel) <getWGsizes:1980: create kernel : error -45>

difficile te t’aider.
Je ne sais pas si quelqu’un a un opencl fonctionnant avec le build OBS?

Cordialement

17

Merci à tous pour vos réponses.
Après le clinfo, j’ai fait de la maintenance :

[code]zakfm@zak:~$ clinfo
Number of platforms 1
Platform Name Intel(R) OpenCL Graphics
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 3.0
Platform Profile FULL_PROFILE
Platform Extensions cl_khr_byte_addressable_store cl_khr_device_uuid cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_command_queue_families cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_subgroup_extended_types cl_khr_subgroup_non_uniform_vote cl_khr_subgroup_ballot cl_khr_subgroup_non_uniform_arithmetic cl_khr_subgroup_shuffle cl_khr_subgroup_shuffle_relative cl_khr_subgroup_clustered_reduce cl_intel_device_attribute_query cl_khr_expect_assume cl_khr_extended_bit_ops cl_khr_suggested_local_work_size cl_intel_split_work_group_barrier cl_khr_fp64 cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_linkonce_odr cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_ext_float_atomics cl_khr_external_memory cl_intel_planar_yuv cl_intel_packed_yuv cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_3d_image_writes cl_intel_media_block_io cl_intel_create_buffer_with_properties cl_intel_subgroup_local_block_io cl_khr_integer_dot_product cl_khr_gl_sharing cl_khr_gl_depth_images cl_khr_gl_event cl_khr_gl_msaa_sharing cl_intel_va_api_media_sharing cl_intel_sharing_format_query cl_khr_pci_bus_info
Platform Extensions with Version cl_khr_byte_addressable_store 0x400000 (1.0.0)
cl_khr_device_uuid 0x400000 (1.0.0)
cl_khr_fp16 0x400000 (1.0.0)
cl_khr_global_int32_base_atomics 0x400000 (1.0.0)
cl_khr_global_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_icd 0x400000 (1.0.0)
cl_khr_local_int32_base_atomics 0x400000 (1.0.0)
cl_khr_local_int32_extended_atomics 0x400000 (1.0.0)
cl_intel_command_queue_families 0x400000 (1.0.0)
cl_intel_subgroups 0x400000 (1.0.0)
cl_intel_required_subgroup_size 0x400000 (1.0.0)
cl_intel_subgroups_short 0x400000 (1.0.0)
cl_khr_spir 0x400000 (1.0.0)
cl_intel_accelerator 0x400000 (1.0.0)
cl_intel_driver_diagnostics 0x400000 (1.0.0)
cl_khr_priority_hints 0x400000 (1.0.0)
cl_khr_throttle_hints 0x400000 (1.0.0)
cl_khr_create_command_queue 0x400000 (1.0.0)
cl_intel_subgroups_char 0x400000 (1.0.0)
cl_intel_subgroups_long 0x400000 (1.0.0)
cl_khr_il_program 0x400000 (1.0.0)
cl_intel_mem_force_host_memory 0x400000 (1.0.0)
cl_khr_subgroup_extended_types 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_vote 0x400000 (1.0.0)
cl_khr_subgroup_ballot 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_arithmetic 0x400000 (1.0.0)
cl_khr_subgroup_shuffle 0x400000 (1.0.0)
cl_khr_subgroup_shuffle_relative 0x400000 (1.0.0)
cl_khr_subgroup_clustered_reduce 0x400000 (1.0.0)
cl_intel_device_attribute_query 0x400000 (1.0.0)
cl_khr_expect_assume 0x400000 (1.0.0)
cl_khr_extended_bit_ops 0x400000 (1.0.0)
cl_khr_suggested_local_work_size 0x400000 (1.0.0)
cl_intel_split_work_group_barrier 0x400000 (1.0.0)
cl_khr_fp64 0x400000 (1.0.0)
cl_intel_spirv_media_block_io 0x400000 (1.0.0)
cl_intel_spirv_subgroups 0x400000 (1.0.0)
cl_khr_spirv_linkonce_odr 0x400000 (1.0.0)
cl_khr_spirv_no_integer_wrap_decoration 0x400000 (1.0.0)
cl_intel_unified_shared_memory 0x400000 (1.0.0)
cl_khr_mipmap_image 0x400000 (1.0.0)
cl_khr_mipmap_image_writes 0x400000 (1.0.0)
cl_ext_float_atomics 0x400000 (1.0.0)
cl_khr_external_memory 0x9001 (0.9.1)
cl_intel_planar_yuv 0x400000 (1.0.0)
cl_intel_packed_yuv 0x400000 (1.0.0)
cl_khr_int64_base_atomics 0x400000 (1.0.0)
cl_khr_int64_extended_atomics 0x400000 (1.0.0)
cl_khr_image2d_from_buffer 0x400000 (1.0.0)
cl_khr_depth_images 0x400000 (1.0.0)
cl_khr_3d_image_writes 0x400000 (1.0.0)
cl_intel_media_block_io 0x400000 (1.0.0)
cl_intel_create_buffer_with_properties 0x400000 (1.0.0)
cl_intel_subgroup_local_block_io 0x400000 (1.0.0)
cl_khr_integer_dot_product 0x800000 (2.0.0)
cl_khr_gl_sharing 0x400000 (1.0.0)
cl_khr_gl_depth_images 0x400000 (1.0.0)
cl_khr_gl_event 0x400000 (1.0.0)
cl_khr_gl_msaa_sharing 0x400000 (1.0.0)
cl_intel_va_api_media_sharing 0x400000 (1.0.0)
cl_intel_sharing_format_query 0x400000 (1.0.0)
cl_khr_pci_bus_info 0x400000 (1.0.0)
Platform Numeric Version 0xc00000 (3.0.0)
Platform Extensions function suffix INTEL
Platform Host timer resolution 1ns
Platform External memory handle types DMA buffer

Platform Name Intel(R) OpenCL Graphics
Number of devices 1
Device Name Intel(R) Graphics
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 3.0 NEO
Device UUID 8680677d-0600-0000-0002-000000000000
Driver UUID 32352e31-382e-3333-3537-380000000000
Valid Device LUID No
Device LUID 50f6-4dc3fd7f0000
Device Node Mask 0
Device Numeric Version 0xc00000 (3.0.0)
Driver Version 25.18.33578
Device OpenCL C Version OpenCL C 1.2
Device OpenCL C all versions OpenCL C 0x400000 (1.0.0)
OpenCL C 0x401000 (1.1.0)
OpenCL C 0x402000 (1.2.0)
OpenCL C 0xc00000 (3.0.0)
Device OpenCL C features __opencl_c_int64 0xc00000 (3.0.0)
__opencl_c_3d_image_writes 0xc00000 (3.0.0)
__opencl_c_images 0xc00000 (3.0.0)
__opencl_c_read_write_images 0xc00000 (3.0.0)
__opencl_c_atomic_order_acq_rel 0xc00000 (3.0.0)
__opencl_c_atomic_order_seq_cst 0xc00000 (3.0.0)
__opencl_c_atomic_scope_all_devices 0xc00000 (3.0.0)
__opencl_c_atomic_scope_device 0xc00000 (3.0.0)
__opencl_c_generic_address_space 0xc00000 (3.0.0)
__opencl_c_program_scope_global_variables 0xc00000 (3.0.0)
__opencl_c_work_group_collective_functions 0xc00000 (3.0.0)
__opencl_c_subgroups 0xc00000 (3.0.0)
__opencl_c_ext_fp32_global_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp32_local_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp32_global_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp32_local_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp16_global_atomic_load_store 0xc00000 (3.0.0)
__opencl_c_ext_fp16_local_atomic_load_store 0xc00000 (3.0.0)
__opencl_c_ext_fp16_global_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp16_local_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_fp64 0xc00000 (3.0.0)
__opencl_c_ext_fp64_global_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp64_local_atomic_add 0xc00000 (3.0.0)
__opencl_c_ext_fp64_global_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_ext_fp64_local_atomic_min_max 0xc00000 (3.0.0)
__opencl_c_integer_dot_product_input_4x8bit 0xc00000 (3.0.0)
__opencl_c_integer_dot_product_input_4x8bit_packed 0xc00000 (3.0.0)
Latest conformance test passed v2025-04-14-00
Device Type GPU
Device PCI bus info (KHR) PCI-E, 0000:00:02.0
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 64
Max clock frequency 1950MHz
Device IP (Intel) 0x3118004 (12.280.4)
Device ID (Intel) 32103
Slices (Intel) 1
Sub-slices per slice (Intel) 4
EUs per sub-slice (Intel) 16
Threads per EU (Intel) 8
Feature capabilities (Intel) DP4A
Device Partition (core)
Max number of sub-devices 0
Supported partition types None
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 1024x1024x1024
Max work group size 1024
Preferred work group size multiple (device) 64
Preferred work group size multiple (kernel) 64
Max sub-groups per work group 128
Sub-group sizes (Intel) 8, 16, 32
Preferred / native vector sizes
char 16 / 16
short 8 / 8
int 4 / 4
long 1 / 1
half 8 / 8 (cl_khr_fp16)
float 1 / 1
double 1 / 1 (cl_khr_fp64)
Half-precision Floating-point support (cl_khr_fp16)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Correctly-rounded divide and sqrt operations Yes
Double-precision Floating-point support (cl_khr_fp64)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero Yes
Round to infinity Yes
IEEE754-2008 fused multiply-add Yes
Support is emulated in software No
Address bits 64, Little-Endian
External memory handle types DMA buffer
Global memory size 30432702464 (28.34GiB)
Error Correction support No
Max memory allocation 4294959104 (4GiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing No
Fine-grained system sharing No
Atomics No
Unified Shared Memory (USM) (cl_intel_unified_shared_memory)
Host USM capabilities (Intel) USM access, USM atomic access
Device USM capabilities (Intel) USM access, USM atomic access
Single-Device USM caps (Intel) USM access, USM atomic access
Cross-Device USM caps (Intel) USM access, USM atomic access
Shared System USM caps (Intel) (n/a)
Minimum alignment for any data type 128 bytes
Alignment of base address 1024 bits (128 bytes)
Preferred alignment for atomics
SVM 64 bytes
Global 64 bytes
Local 64 bytes
Atomic memory capabilities relaxed, acquire/release, sequentially-consistent, work-group scope, device scope, all-devices scope
Atomic fence capabilities relaxed, acquire/release, sequentially-consistent, work-item scope, work-group scope, device scope, all-devices scope
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 4294959104 (4GiB)
Global Memory cache type Read/Write
Global Memory cache size 4194304 (4MiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 16
Max size for 1D images from buffer 268434944 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 4 bytes
Pitch alignment for 2D image buffers 4 pixels
Max 2D image size 16384x16384 pixels
Max planar YUV image size 16384x16128 pixels
Max 3D image size 16384x16384x2048 pixels
Max number of read image args 128
Max number of write image args 128
Max number of read/write image args 128
Pipe support No
Max number of pipe args 0
Max active pipe reservations 0
Max pipe packet size 0
Local memory type Local
Local memory size 65536 (64KiB)
Max number of constant args 8
Max constant buffer size 4294959104 (4GiB)
Generic address space support Yes
Max size of kernel argument 2048 (2KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Device enqueue capabilities (n/a)
Queue properties (on device)
Out-of-order execution No
Profiling No
Preferred size 0
Max size 0
Max queues on device 0
Max events on device 0
Device queue families ccs (1)
Queue properties Out-of-order execution, Profiling
Capabilities create single-queue events, create cross-queue events
rcs (1)
Queue properties Out-of-order execution, Profiling
Capabilities create single-queue events, create cross-queue events
bcs (1)
Queue properties Out-of-order execution, Profiling
Capabilities create single-queue events, create cross-queue events
Prefer user sync for interop Yes
Profiling timer resolution 52ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels No
Non-uniform work-groups Yes
Work-group collective functions Yes
Sub-group independent forward progress No
IL version SPIR-V_1.3 SPIR-V_1.2 SPIR-V_1.1 SPIR-V_1.0
ILs with version SPIR-V 0x403000 (1.3.0)
SPIR-V 0x402000 (1.2.0)
SPIR-V 0x401000 (1.1.0)
SPIR-V 0x400000 (1.0.0)
SPIR versions 1.2
printf() buffer size 4194304 (4MiB)
Built-in kernels (n/a)
Built-in kernels with version (n/a)
Device Extensions cl_khr_byte_addressable_store cl_khr_device_uuid cl_khr_fp16 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_icd cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_intel_command_queue_families cl_intel_subgroups cl_intel_required_subgroup_size cl_intel_subgroups_short cl_khr_spir cl_intel_accelerator cl_intel_driver_diagnostics cl_khr_priority_hints cl_khr_throttle_hints cl_khr_create_command_queue cl_intel_subgroups_char cl_intel_subgroups_long cl_khr_il_program cl_intel_mem_force_host_memory cl_khr_subgroup_extended_types cl_khr_subgroup_non_uniform_vote cl_khr_subgroup_ballot cl_khr_subgroup_non_uniform_arithmetic cl_khr_subgroup_shuffle cl_khr_subgroup_shuffle_relative cl_khr_subgroup_clustered_reduce cl_intel_device_attribute_query cl_khr_expect_assume cl_khr_extended_bit_ops cl_khr_suggested_local_work_size cl_intel_split_work_group_barrier cl_khr_fp64 cl_intel_spirv_media_block_io cl_intel_spirv_subgroups cl_khr_spirv_linkonce_odr cl_khr_spirv_no_integer_wrap_decoration cl_intel_unified_shared_memory cl_khr_mipmap_image cl_khr_mipmap_image_writes cl_ext_float_atomics cl_khr_external_memory cl_intel_planar_yuv cl_intel_packed_yuv cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_image2d_from_buffer cl_khr_depth_images cl_khr_3d_image_writes cl_intel_media_block_io cl_intel_create_buffer_with_properties cl_intel_subgroup_local_block_io cl_khr_integer_dot_product cl_khr_gl_sharing cl_khr_gl_depth_images cl_khr_gl_event cl_khr_gl_msaa_sharing cl_intel_va_api_media_sharing cl_intel_sharing_format_query cl_khr_pci_bus_info
Device Extensions with Version cl_khr_byte_addressable_store 0x400000 (1.0.0)
cl_khr_device_uuid 0x400000 (1.0.0)
cl_khr_fp16 0x400000 (1.0.0)
cl_khr_global_int32_base_atomics 0x400000 (1.0.0)
cl_khr_global_int32_extended_atomics 0x400000 (1.0.0)
cl_khr_icd 0x400000 (1.0.0)
cl_khr_local_int32_base_atomics 0x400000 (1.0.0)
cl_khr_local_int32_extended_atomics 0x400000 (1.0.0)
cl_intel_command_queue_families 0x400000 (1.0.0)
cl_intel_subgroups 0x400000 (1.0.0)
cl_intel_required_subgroup_size 0x400000 (1.0.0)
cl_intel_subgroups_short 0x400000 (1.0.0)
cl_khr_spir 0x400000 (1.0.0)
cl_intel_accelerator 0x400000 (1.0.0)
cl_intel_driver_diagnostics 0x400000 (1.0.0)
cl_khr_priority_hints 0x400000 (1.0.0)
cl_khr_throttle_hints 0x400000 (1.0.0)
cl_khr_create_command_queue 0x400000 (1.0.0)
cl_intel_subgroups_char 0x400000 (1.0.0)
cl_intel_subgroups_long 0x400000 (1.0.0)
cl_khr_il_program 0x400000 (1.0.0)
cl_intel_mem_force_host_memory 0x400000 (1.0.0)
cl_khr_subgroup_extended_types 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_vote 0x400000 (1.0.0)
cl_khr_subgroup_ballot 0x400000 (1.0.0)
cl_khr_subgroup_non_uniform_arithmetic 0x400000 (1.0.0)
cl_khr_subgroup_shuffle 0x400000 (1.0.0)
cl_khr_subgroup_shuffle_relative 0x400000 (1.0.0)
cl_khr_subgroup_clustered_reduce 0x400000 (1.0.0)
cl_intel_device_attribute_query 0x400000 (1.0.0)
cl_khr_expect_assume 0x400000 (1.0.0)
cl_khr_extended_bit_ops 0x400000 (1.0.0)
cl_khr_suggested_local_work_size 0x400000 (1.0.0)
cl_intel_split_work_group_barrier 0x400000 (1.0.0)
cl_khr_fp64 0x400000 (1.0.0)
cl_intel_spirv_media_block_io 0x400000 (1.0.0)
cl_intel_spirv_subgroups 0x400000 (1.0.0)
cl_khr_spirv_linkonce_odr 0x400000 (1.0.0)
cl_khr_spirv_no_integer_wrap_decoration 0x400000 (1.0.0)
cl_intel_unified_shared_memory 0x400000 (1.0.0)
cl_khr_mipmap_image 0x400000 (1.0.0)
cl_khr_mipmap_image_writes 0x400000 (1.0.0)
cl_ext_float_atomics 0x400000 (1.0.0)
cl_khr_external_memory 0x9001 (0.9.1)
cl_intel_planar_yuv 0x400000 (1.0.0)
cl_intel_packed_yuv 0x400000 (1.0.0)
cl_khr_int64_base_atomics 0x400000 (1.0.0)
cl_khr_int64_extended_atomics 0x400000 (1.0.0)
cl_khr_image2d_from_buffer 0x400000 (1.0.0)
cl_khr_depth_images 0x400000 (1.0.0)
cl_khr_3d_image_writes 0x400000 (1.0.0)
cl_intel_media_block_io 0x400000 (1.0.0)
cl_intel_create_buffer_with_properties 0x400000 (1.0.0)
cl_intel_subgroup_local_block_io 0x400000 (1.0.0)
cl_khr_integer_dot_product 0x800000 (2.0.0)
cl_khr_gl_sharing 0x400000 (1.0.0)
cl_khr_gl_depth_images 0x400000 (1.0.0)
cl_khr_gl_event 0x400000 (1.0.0)
cl_khr_gl_msaa_sharing 0x400000 (1.0.0)
cl_intel_va_api_media_sharing 0x400000 (1.0.0)
cl_intel_sharing_format_query 0x400000 (1.0.0)
cl_khr_pci_bus_info 0x400000 (1.0.0)

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, …) Intel(R) OpenCL Graphics
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, …) Success [INTEL]
clCreateContext(NULL, …) [default] Success [INTEL]
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) Success (1)
Platform Name Intel(R) OpenCL Graphics
Device Name Intel(R) Graphics
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) Success (1)
Platform Name Intel(R) OpenCL Graphics
Device Name Intel(R) Graphics
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM) No devices found in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL) Success (1)
Platform Name Intel(R) OpenCL Graphics
Device Name Intel(R) Graphics

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
zakfm@zak:~$[/code]

La stack OpenCL Intel est maintenant saine et à jour. La balle est dans le camp de darktable.
[hr]

Merci Manu. Dans ~/.config/darktable/darktablerc j’ai passé clplatform_intelropenclhdgraphics=FALSE à TRUE et changéle premier 0 en 1 dans cldevice_v5_intelropenclgraphicsintelrgraphics0x7d67=0 250 0 16 16 128 0 0 0.000 0.000 0.250
Et j’ai enfin pu activer l’openCL dans mon darktable. Cela faisait un moment que je pataugeais. Ouf !

18

Super !

Si tu veux aller plus loin, tu peux regarder un peu la section performance de darktable.info, en anglais ou en allemand, non encore traduite.

C’est un outil qui permet de mesurer effectivement les performances de sa machine avec darktable. Il y a un outil à disposition (on utilise un photo étalon fournie, on téléverse ensuite un log) et des tas de recommandations et autres conseils.

Par exemple, pour les iGPU (traduit) :

Entre cette section et la doc sur la mémoire et l’optimisation des performances, j’ai considérablement amélioré les temps de traitement sur ma machine.
[hr]
Parce qu’une fois OpenCL activé, la question devient : est-ce pour le mieux ?

19

Merci pour ces liens très instructifs. Encore du taf… :wink: