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*** Dependency of Intel OpenCL runtime for Linux Ubuntu ( CPU device only ) on lsb-core package ***
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During installation of Intel OpenCL runtime ( opencl_runtime_16.1.1_x64_ubuntu_6.4.0.025.tgz ) on Linux Ubuntu 16.04 LTS 64-bit in a virtualized environment of VMware Workstation 12 Player I was notified that there is a missing dependency on lsb-core package. I've terminated installation, installed lsb-core package, rebooted Linux Ubuntu, resumed installation, but the notification about missing lsb-core package was displayed again. I've continued installation and Intel OpenCL runtime was successfully installed.
There are a couple of questions:
- Could you explain why that dependency on lsb-core package is needed?
- It looks like there is a bug in a script of the installer when packages consistency is verified since the message about missing lsb-core package did not disappear even if it was installed before. Could you check it?
- Are there any plans to release an updated Intel OpenCL runtime for Linux Ubuntu 16.04 LTS 64-bit? Right now the installer informs that only 14.04 version of Linux Ubuntu is supported.
Note: opencl_runtime_16.1.1_x64_ubuntu_6.4.0.025.tgz ( CPU devices only ) was used.
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I've finally completed OpenCL environment setups on Linux Ubuntu and two platforms, Intel OpenCL and AMD APP SDK, currently displayed by clinfo utility...
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[ clinfo - Part 1 ]
ubuntu@ubuntu-vm:~$ clinfo
Number of platforms: 2
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 LINUX
Platform Name: Intel(R) OpenCL
Platform Vendor: Intel(R) Corporation
Platform Extensions: cl_khr_icd 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_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_fp64
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 AMD-APP (1214.3)
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
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[ clinfo - Part 2 ]
Platform Name: Intel(R) OpenCL
Number of devices: 1
Device Type: CL_DEVICE_TYPE_CPU
Device ID: 32902
Max compute units: 8
Max work items dimensions: 3
Max work items[0]: 8192
Max work items[1]: 8192
Max work items[2]: 8192
Max work group size: 8192
Preferred vector width char: 1
Preferred vector width short: 1
Preferred vector width int: 1
Preferred vector width long: 1
Preferred vector width float: 1
Preferred vector width double: 1
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: 2800Mhz
Address bits: 64
Max memory allocation: 6316211200
Image support: Yes
Max number of images read arguments: 480
Max number of images write arguments: 480
Max image 2D width: 16384
Max image 2D height: 16384
Max image 3D width: 2048
Max image 3D height: 2048
Max image 3D depth: 2048
Max samplers within kernel: 480
Max size of kernel argument: 3840
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: No
Round to +ve and infinity: No
IEEE754-2008 fused multiply-add: No
Cache type: Read/Write
Cache line size: 64
Cache size: 262144
Global memory size: 25264844800
Constant buffer size: 131072
Max number of constant args: 480
Local memory type: Global
Local memory size: 32768
Kernel Preferred work group size multiple: 128
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 properties:
Out-of-Order: Yes
Profiling : Yes
Platform ID: 0x0000000000cf1b60
Name: Intel(R) Core(TM) i7-3840QM CPU @ 2.80GHz
Vendor: Intel(R) Corporation
Device OpenCL C version: OpenCL C 1.2
Driver version: 1.2.0.25
Profile: FULL_PROFILE
Version: OpenCL 1.2 (Build 25)
Extensions: cl_khr_icd 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_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_fp64
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[ clinfo - Part 3 ]
Platform Name: AMD Accelerated Parallel Processing
Number of devices: 1
Device Type: CL_DEVICE_TYPE_CPU
Device ID: 4098
Board name:
Max compute units: 8
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: 2790Mhz
Address bits: 64
Max memory allocation: 6316211200
Image support: Yes
Max number of images read arguments: 128
Max number of images write arguments: 8
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: 25264844800
Constant buffer size: 65536
Max number of constant args: 8
Local memory type: Global
Local memory size: 32768
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 properties:
Out-of-Order: No
Profiling : Yes
Platform ID: 0x00007fe6f0de0fc0
Name: Intel(R) Core(TM) i7-3840QM CPU @ 2.80GHz
Vendor: GenuineIntel
Device OpenCL C version: OpenCL C 1.2
Driver version: 1214.3 (sse2,avx)
Profile: FULL_PROFILE
Version: OpenCL 1.2 AMD-APP (1214.3)
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
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Thanks for this info. Very interesting to see this comparison!
At this time Ubuntu 14.04 is the only validated Ubuntu for this package. I have not seen any plans or timelines for Ubuntu 16.04 support across the OpenCL SDK, cpu-only runtime, standalone Gen graphics, or Media Server Studio. Let me check for more info. I'll post here if there are any updates.
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I've verified a couple of tests already and results for a MemoryOptimization test, when Intel OpenCL platform is selected, don't look right. That is, bandwidth numbers are too high:
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Here is the same test on Windows 7 for NVIDIA platform:
C:\...AMD\AMD APP SDK\2.9\Samples\OpenCL\Bin\x86_64>MemoryOptimizations.exe Platform 0 : Intel(R) Corporation Platform 1 : NVIDIA Corporation Platform found : NVIDIA Corporation Selected Platform Vendor : NVIDIA Corporation Device 0 : Quadro K1000M Device ID is 00000000003F6A60 ----------------------------------------- Copy 1D FastPath : 17.4474 GB/s ----------------------------------------- Copy 1D CompletePath : 16.6784 GB/s ----------------------------------------- Copy 2D 32-bit (64x2) : 16.7215 GB/s Copy 2D 128-bit (64x2) : 26.2851 GB/s ----------------------------------------- Copy 2D 32-bit (64x4) : 16.441 GB/s Copy 2D 128-bit (64x4) : 26.0899 GB/s ----------------------------------------- Copy 2D 32-bit (8x8) : 7.69187 GB/s Copy 2D 128-bit (8x8) : 22.6039 GB/s ----------------------------------------- Copy 2D 32-bit (256x1) : 16.5217 GB/s Copy 2D 128-bit (256x1) : 26.3462 GB/s ----------------------------------------- Copy 2D 32-bit (32x2) : 9.48022 GB/s Copy 2D 128-bit (32x2) : 23.4351 GB/s ----------------------------------------- Copy 2D 32-bit (64x1) : 9.52661 GB/s Copy 2D 128-bit (64x1) : 22.8418 GB/s ----------------------------------------- Copy 2D 32-bit (16x16) : 14.9595 GB/s Copy 2D 128-bit (16x16) : 26.0934 GB/s ----------------------------------------- Copy 2D 32-bit (16x4) : 8.69297 GB/s Copy 2D 128-bit (16x4) : 24.4265 GB/s ----------------------------------------- Copy 2D 32-bit (1x64) : 1.95445 GB/s Copy 2D 128-bit (1x64) : 7.63334 GB/s ----------------------------------------- Copy 1D 128-bit : 22.8878 GB/s ----------------------------------------- NoCoal Copy 1D 32-bit : 9.81886 GB/s ----------------------------------------- Split Copy 1D 32-bit : 8.7023 GB/s ----------------------------------------- HasLocalBankConflicts 32-bit : 8.80025 GB/s ----------------------------------------- NoLocalBankConflicts 32-bit : 84.4067 GB/s
As you see peak performance numbers are around 25 GB/s.
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Unfortunately, MemoryOptimizations test on Windows 7 for Intel OpenCL platforms failed:
...
C:\...AMD\AMD APP SDK\2.9\Samples\OpenCL\Bin\x86_64>MemoryOptimizations.exe -p 0
Platform 0 : Intel(R) Corporation
Platform 1 : NVIDIA Corporation
Selected Platform Vendor : Intel(R) Corporation
Device 0 : Intel(R) HD Graphics 4000 Device ID is 000007FEF5310300
Error: clGetDeviceIDs(CL_DEVICE_DOUBLE_FP_CONFIG) failed Error code : CL_INVALID_VALUE
Location : ../../../../include/SDKUtil\CLUtil.hpp:1904
Error: SDKDeviceInfo::setDeviceInfo() failed
Location : MemoryOptimizations.cpp:187
...
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>>...Let me check for more info. I'll post here if there are any updates...
Thank you. Please review a dependency on lsb-core package as well.
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>>- Could you explain why that dependency on lsb-core package is needed?
On another Linux Ubuntu 16.04 LTS computer I didn't do any 'apt' updates / installs related to lsb-core package and Intel OpenCL runtime ( opencl_runtime_16.1.1_x64_ubuntu_6.4.0.025.tgz ) was successfully installed. So far I don't see any runtime problems with OpenCL test applications that use Intel OpenCL CPU-only platform.
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