Can't install OpenCL driver for Intel HD Graphics 620 from a Gen7 (Kaby Lake) processor

ducbueno__ — Wed, 04 Aug 2021 00:51:47 GMT

Hello.

I'm having some trouble running OpenCL on my system. My clinfo and other OpenCL applications I have say that an OpenCL context could not be created (error code -2).

I've followed this excellent article (https://github.com/bashbaug/OpenCLPapers/blob/master/OpenCLOnLinux.asciidoc) and was able to see that my system has a working libOpenCL.so and that it has a readable .icd file.

I had a previous working installation of OpenCL, and my .icd file is pointing to a file that doesn't exists (/usr/lib/x86_64-linux-gnu/intel-opencl/libigdrcl.so). I've assumed that the pointed file was a driver file the was missing, so I downloaded the file given in https://software.intel.com/content/www/us/en/develop/articles/legacy-opencl-drivers.html#latest_linux_driver.

By installing the file mentioned above I got the directory /opt/intel/opencl which has a libigdrcl.so file. I wrote another .icd pointing to this new file but clinfo still tells me it was impossible to create an OpenCL context.

Does anyone know whats is going on? The problem is with the driver? Where can I get correct Linux drivers for my specific hardware?

P.S.: here is the output of clinfo:

Number of platforms 1
Platform Name Intel(R) OpenCL
Platform Vendor Intel(R) Corporation
Platform Version OpenCL 2.1 LINUX
Platform Profile FULL_PROFILE
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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_unified_shared_memory_preview cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer
Platform Host timer resolution 1ns
Platform Extensions function suffix INTEL

Platform Name Intel(R) OpenCL
Number of devices 1
Device Name Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 2.1 (Build 0)
Driver Version 2020.10.3.0.04
Device OpenCL C Version OpenCL C 2.0
Device Type CPU
Device Profile FULL_PROFILE
Device Available Yes
Compiler Available Yes
Linker Available Yes
Max compute units 4
Max clock frequency 2700MHz
Device Partition (core)
Max number of sub-devices 4
Supported partition types by counts, equally, by names (Intel)
Supported affinity domains (n/a)
Max work item dimensions 3
Max work item sizes 8192x8192x8192
Max work group size 8192
Preferred work group size multiple <getWGsizes:1171: create context : error -2>
Max sub-groups per work group 1
Preferred / native vector sizes
char 1 / 32
short 1 / 16
int 1 / 8
long 1 / 4
half 0 / 0 (n/a)
float 1 / 8
double 1 / 4 (cl_khr_fp64)
Half-precision Floating-point support (n/a)
Single-precision Floating-point support (core)
Denormals Yes
Infinity and NANs Yes
Round to nearest Yes
Round to zero No
Round to infinity No
IEEE754-2008 fused multiply-add No
Support is emulated in software No
Correctly-rounded divide and sqrt operations No
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
Global memory size 16684314624 (15.54GiB)
Error Correction support No
Max memory allocation 4171078656 (3.885GiB)
Unified memory for Host and Device Yes
Shared Virtual Memory (SVM) capabilities (core)
Coarse-grained buffer sharing Yes
Fine-grained buffer sharing Yes
Fine-grained system sharing Yes
Atomics Yes
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 0 bytes
Max size for global variable 65536 (64KiB)
Preferred total size of global vars 65536 (64KiB)
Global Memory cache type Read/Write
Global Memory cache size 262144 (256KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 480
Max size for 1D images from buffer 260692416 pixels
Max 1D or 2D image array size 2048 images
Base address alignment for 2D image buffers 64 bytes
Pitch alignment for 2D image buffers 64 pixels
Max 2D image size 16384x16384 pixels
Max 3D image size 2048x2048x2048 pixels
Max number of read image args 480
Max number of write image args 480
Max number of read/write image args 480
Max number of pipe args 16
Max active pipe reservations 65535
Max pipe packet size 1024
Local memory type Global
Local memory size 32768 (32KiB)
Max number of constant args 480
Max constant buffer size 131072 (128KiB)
Max size of kernel argument 3840 (3.75KiB)
Queue properties (on host)
Out-of-order execution Yes
Profiling Yes
Local thread execution (Intel) Yes
Queue properties (on device)
Out-of-order execution Yes
Profiling Yes
Preferred size 4294967295 (4GiB)
Max size 4294967295 (4GiB)
Max queues on device 4294967295
Max events on device 4294967295
Prefer user sync for interop No
Profiling timer resolution 1ns
Execution capabilities
Run OpenCL kernels Yes
Run native kernels Yes
Sub-group independent forward progress No
IL version SPIR-V_1.0
SPIR versions 1.2
printf() buffer size 1048576 (1024KiB)
Built-in kernels (n/a)
Device 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_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_khr_il_program cl_intel_unified_shared_memory_preview cl_intel_exec_by_local_thread cl_intel_vec_len_hint cl_intel_device_partition_by_names cl_khr_spir cl_khr_fp64 cl_khr_image2d_from_buffer

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Intel(R) OpenCL
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [INTEL]
clCreateContext(NULL, ...) [default] <checkNullCtx:2758: create context with device from default platform : error -2>
clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT) No devices available in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU) No devices available in platform
clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU) No devices found in platform
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) No devices available in platform

ICD loader properties
ICD loader Name OpenCL ICD Loader
ICD loader Vendor OCL Icd free software
ICD loader Version 2.2.11
ICD loader Profile OpenCL 2.1

Re: Can't install OpenCL driver for Intel HD Graphics 620 from a Gen7 (Kaby Lake) processor

Ben_A_Intel — Wed, 04 Aug 2021 18:19:26 GMT

Hi, if you're using a Linux distribution that can use .deb install packages can you try downloading and installing the latest compute-runtime release?

https://github.com/intel/compute-runtime/releases/latest

These packages are much more up-to-date than the packages on the link above and will support your Kaby Lake GPU.

With your current install, I suspect some of the required dependencies are missing (e.g. the GPU compiler) and this is why clinfo is only enumerating a CPU OpenCL device. Please be sure to download all of the installation packages and install them as described in the "Installation procedure".

If this still doesn't work, or if you cannot install from .deb packages, can you please include a bit more information about your system, such as which distro you are using? Thanks!

topic Can't install OpenCL driver for Intel HD Graphics 620 from a Gen7 (Kaby Lake) processor in GPU Compute Software

Can't install OpenCL driver for Intel HD Graphics 620 from a Gen7 (Kaby Lake) processor

Re: Can't install OpenCL driver for Intel HD Graphics 620 from a Gen7 (Kaby Lake) processor