OpenCL 1.2 pour carte AMD
Sur mon ordinateur portable, j'ai une carte discrète qui devrait supporter OpenCL 1.2 dont j'ai besoin pour exécuter le framework souhaité:
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] (rev ff)
J'ai installé des pilotes opensource comme décrit dans la réponse à cette question et également téléchargé et installé l'application AMD sdk 3.0. Code de test devices.c et hello.c compiler et exécuter, mais tout indique OpenCL 1.1 MESA même après avoir remplacé le lien symbolique pour libOpenCL.so dans /usr/lib/x86_64-linux-gnu/ avec celui du SDK:
$ /opt/AMDAPPSDK-3.0/bin/x86_64/clinfo
Number of platforms: 1
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.1 MESA 11.2.0
Platform Name: Clover
Platform Vendor: Mesa
Platform Extensions: cl_khr_icd
Platform Name: Clover
Number of devices: 1
Device Type: CL_DEVICE_TYPE_GPU
Vendor ID: 1002h
Max compute units: 2
Max work items dimensions: 3
Max work items[0]: 256
Max work items[1]: 256
Max work items[2]: 256
Max work group size: 256
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 4
Preferred vector width double: 0
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 4
Native vector width double: 0
Max clock frequency: 750Mhz
Address bits: 32
Max memory allocation: 268435456
Image support: No
Max size of kernel argument: 1024
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: No
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: No
Round to +ve and infinity: No
IEEE754-2008 fused multiply-add: No
Cache type: None
Cache line size: 0
Cache size: 0
Global memory size: 1073741824
Constant buffer size: 268435456
Max number of constant args: 13
Local memory type: Scratchpad
Local memory size: 32768
Kernel Preferred work group size multiple: 64
Error correction support: 0
Unified memory for Host and Device: 1
Profiling timer resolution: 0
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: No
Queue on Host properties:
Out-of-Order: No
Profiling : Yes
Platform ID: 0x7f9d5e667ac0
Name: AMD CAICOS (DRM 2.43.0, LLVM 3.8.0)
Vendor: AMD
Device OpenCL C version: OpenCL C 1.1
Driver version: 11.2.0
Profile: FULL_PROFILE
Version: OpenCL 1.1 MESA 11.2.0
Extensions: cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store
Question : Existe-t-il un moyen de savoir si mon périphérique ne prend effectivement pas en charge OpenCL 1.2 ou si le support est présent, l'activer alors? Merci beaucoup!
P.S. Je n'ai pas installé de pilotes pour carte discrète, mais on dit que je n'en ai pas besoin. J'utilise X sur la carte intégrée:
$ glxinfo | grep -i vendor
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
Vendor: Intel Open Source Technology Center (0x8086)
OpenGL vendor string: Intel Open Source Technology Center
P.S.2. Lorsque j'ai désinstallé opencl-headers et mesa-opencl-icd, même /opt/AMDAPPSDK-3.0/bin/x86_64/clinfo a cessé de fonctionner (impossible d'obtenir les ID de plate-forme).
Edit3: Correction du précédent, en créant un lien vers
Sudo ln -s '/opt/AMDAPPSDK-3.0/lib/x86_64/sdk/libamdocl64.so' /usr/lib/x86_64-linux-gnu/libamdocl64.so
mais à présent, il indique que la CPU est un périphérique OpenCL !
$ clinfo
Number of platforms: 1
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 2.0 AMD-APP (1800.8)
Platform Name: AMD Accelerated Parallel Processing
Platform Vendor: Advanced Micro Devices, Inc.
Platform Extensions: cl_khr_icd cl_AMD_event_callback cl_AMD_offline_devices
Platform Name: AMD Accelerated Parallel Processing
Number of devices: 1
Device Type: CL_DEVICE_TYPE_CPU
Vendor ID: 1002h
Board name:
Max compute units: 4
Max work items dimensions: 3
Max work items[0]: 1024
Max work items[1]: 1024
Max work items[2]: 1024
Max work group size: 1024
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 8
Preferred vector width double: 4
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 8
Native vector width double: 4
Max clock frequency: 1044Mhz
Address bits: 64
Max memory allocation: 2147483648
Image support: Yes
Max number of images read arguments: 128
Max number of images write arguments: 64
Max image 2D width: 8192
Max image 2D height: 8192
Max image 3D width: 2048
Max image 3D height: 2048
Max image 3D depth: 2048
Max samplers within kernel: 16
Max size of kernel argument: 4096
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: Yes
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: Yes
Round to +ve and infinity: Yes
IEEE754-2008 fused multiply-add: Yes
Cache type: Read/Write
Cache line size: 64
Cache size: 32768
Global memory size: 8301789184
Constant buffer size: 65536
Max number of constant args: 8
Local memory type: Global
Local memory size: 32768
Max pipe arguments: 16
Max pipe active reservations: 16
Max pipe packet size: 2147483648
Max global variable size: 1879048192
Max global variable preferred total size: 1879048192
Max read/write image args: 64
Max on device events: 0
Queue on device max size: 0
Max on device queues: 0
Queue on device preferred size: 0
SVM capabilities:
Coarse grain buffer: No
Fine grain buffer: No
Fine grain system: No
Atomics: No
Preferred platform atomic alignment: 0
Preferred global atomic alignment: 0
Preferred local atomic alignment: 0
Kernel Preferred work group size multiple: 1
Error correction support: 0
Unified memory for Host and Device: 1
Profiling timer resolution: 1
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: Yes
Queue on Host properties:
Out-of-Order: No
Profiling : Yes
Queue on Device properties:
Out-of-Order: No
Profiling : No
Platform ID: 0x7fbb72e8c430
Name: Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz
Vendor: GenuineIntel
Device OpenCL C version: OpenCL C 1.2
Driver version: 1800.8 (sse2,avx)
Profile: FULL_PROFILE
Version: OpenCL 1.2 AMD-APP (1800.8)
Extensions: cl_khr_fp64 cl_AMD_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_device_fission cl_AMD_device_attribute_query cl_AMD_vec3 cl_AMD_printf cl_AMD_media_ops cl_AMD_media_ops2 cl_AMD_popcnt cl_khr_spir cl_khr_gl_event
Edit 4: essayé cette version du pilote fglrx pour OpenCL sur Ubuntu 16.04, clinfo vient de planter.
Edit 5: Cette approche a fonctionné sur le LiveCD jessie 8 personnalisé, il indique le processeur graphique OpenCL 1.2 (fglrx-driver + AMD APP SDK installé dans le chroot sur VM (malgré cela fglrx. pas réussi à détecter le matériel et à mettre à jour Xorg, mais le module DKMS a été installé) et emballé dans Live USB selon les guides en ligne), mais n'a pas réussi à faire de même avec Ubuntu 14.04 (Debian n’est pas supporté par le programme dont j’ai besoin). Le problème sur mon Ubuntu 16.04 et plus ancien semble être:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] (rev ff) (prog-if ff)
!!! Unknown header type 7f
Kernel driver in use: radeon
Kernel modules: radeon
Non, je peux faire en sorte que fglrx affiche AMD comme moteur de rendu actuel (14.04) en définissant la variable d'environnement DRI_PRIME=1, mais clinfo s'y bloque toujours.
Maintenant, j'ai lu que fglrx est obsolète et que les nouveaux pilotes AMD ne prennent pas en charge Radeon xxxxM, alors que opensource radeon ne supporte pas OpenCL.
Vous avez partiellement résolu mon problème sur APU A10-7850k. J'ai couru:
Sudo ln -s '/opt/AMDAPPSDK-3.0/lib/x86_64/sdk/libamdocl64.so' /usr/lib/x86_64-linux-gnu/libamdocl64.so
Mais maintenant, le processeur est sur OpenCL 1.2 mais le GPU est sur 1.1. Il semble que le GPU utilise les pilotes open source amdgpu compilés avec libclc, à l'aide d'opencl 1.1. Je ne vois pas comment forcer le pilote graphique à utiliser la librairie AMD ... Voici ma sortie clinfo:
Number of platforms: 2
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.1 Mesa 17.1.0-devel - padoka PPA
Platform Name: Clover
Platform Vendor: Mesa
Platform Extensions: cl_khr_icd
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 2.0 AMD-APP (1800.8)
Platform Name: AMD Accelerated Parallel Processing
Platform Vendor: Advanced Micro Devices, Inc.
Platform Extensions: cl_khr_icd cl_AMD_event_callback cl_AMD_offline_devices
Platform Name: Clover
Number of devices: 1
Device Type: CL_DEVICE_TYPE_GPU
Vendor ID: 1002h
Max compute units: 8
Max work items dimensions: 3
Max work items[0]: 256
Max work items[1]: 256
Max work items[2]: 256
Max work group size: 256
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 4
Preferred vector width double: 2
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 4
Native vector width double: 2
Max clock frequency: 720Mhz
Address bits: 64
Max memory allocation: 1497105612
Image support: No
Max size of kernel argument: 1024
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: No
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: No
Round to +ve and infinity: No
IEEE754-2008 fused multiply-add: No
Cache type: None
Cache line size: 0
Cache size: 0
Global memory size: 2138722304
Constant buffer size: 1497105612
Max number of constant args: 16
Local memory type: Scratchpad
Local memory size: 32768
Kernel Preferred work group size multiple: 64
Error correction support: 0
Unified memory for Host and Device: 1
Profiling timer resolution: 0
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: No
Queue on Host properties:
Out-of-Order: No
Profiling : Yes
Platform ID: 0x7fea637e5ee0
Name: AMD KAVERI (DRM 2.43.0 / 4.4.0-64-generic, LLVM 5.0.0)
Vendor: AMD
Device OpenCL C version: OpenCL C 1.1
Driver version: 17.1.0-devel - padoka PPA
Profile: FULL_PROFILE
Version: OpenCL 1.1 Mesa 17.1.0-devel - padoka PPA
Extensions: cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store cl_khr_fp64
Platform Name: AMD Accelerated Parallel Processing
Number of devices: 1
Device Type: CL_DEVICE_TYPE_CPU
Vendor ID: 1002h
Board name:
Max compute units: 4
Max work items dimensions: 3
Max work items[0]: 1024
Max work items[1]: 1024
Max work items[2]: 1024
Max work group size: 1024
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 8
Preferred vector width double: 4
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 8
Native vector width double: 4
Max clock frequency: 1700Mhz
Address bits: 64
Max memory allocation: 2147483648
Image support: Yes
Max number of images read arguments: 128
Max number of images write arguments: 64
Max image 2D width: 8192
Max image 2D height: 8192
Max image 3D width: 2048
Max image 3D height: 2048
Max image 3D depth: 2048
Max samplers within kernel: 16
Max size of kernel argument: 4096
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: Yes
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: Yes
Round to +ve and infinity: Yes
IEEE754-2008 fused multiply-add: Yes
Cache type: Read/Write
Cache line size: 64
Cache size: 16384
Global memory size: 7321481216
Constant buffer size: 65536
Max number of constant args: 8
Local memory type: Global
Local memory size: 32768
Max pipe arguments: 16
Max pipe active reservations: 16
Max pipe packet size: 2147483648
Max global variable size: 1879048192
Max global variable preferred total size: 1879048192
Max read/write image args: 64
Max on device events: 0
Queue on device max size: 0
Max on device queues: 0
Queue on device preferred size: 0
SVM capabilities:
Coarse grain buffer: No
Fine grain buffer: No
Fine grain system: No
Atomics: No
Preferred platform atomic alignment: 0
Preferred global atomic alignment: 0
Preferred local atomic alignment: 0
Kernel Preferred work group size multiple: 1
Error correction support: 0
Unified memory for Host and Device: 1
Profiling timer resolution: 1
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: Yes
Queue on Host properties:
Out-of-Order: No
Profiling : Yes
Queue on Device properties:
Out-of-Order: No
Profiling : No
Platform ID: 0x7fea585b9430
Name: AMD A10-7850K APU with Radeon(TM) R7 Graphics
Vendor: AuthenticAMD
Device OpenCL C version: OpenCL C 1.2
Driver version: 1800.8 (sse2,avx,fma4)
Profile: FULL_PROFILE
Version: OpenCL 1.2 AMD-APP (1800.8)
Extensions: cl_khr_fp64 cl_AMD_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_device_fission cl_AMD_device_attribute_query cl_AMD_vec3 cl_AMD_printf cl_AMD_media_ops cl_AMD_media_ops2 cl_AMD_popcnt cl_khr_spir cl_khr_gl_event ```