Clinfo support for Rocky 8 linux

Edvinas3113 — Fri, 07 Jul 2023 19:55:11 GMT

Hi, I was looking at the requirements and started wondering whether opencl is supported on Rocky 8 linux. I tried to install clinfo on my machine using "dnf install clinfo" and started to get this:

[root@warewulf clinfo_test]# clinfo
Number of platforms 1
Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_image2d_from_buffer cl_intel_vec_len_hint
Platform Extensions function suffix INTEL
Platform Host timer resolution 1ns

Platform Name Intel(R) CPU Runtime for OpenCL(TM) Applications
Number of devices 1
Device Name Intel Core 2 Duo P9xxx (Penryn Class Core 2)
Device Vendor Intel(R) Corporation
Device Vendor ID 0x8086
Device Version OpenCL 2.1 (Build 0)
Driver Version 18.1.0.0920
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 6
Max clock frequency 0MHz
Device Partition (core)
Max number of sub-devices 6
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 (kernel) <getWGsizes:1474: create context : error -2>
Max sub-groups per work group 1
Preferred / native vector sizes
char 1 / 16
short 1 / 8
int 1 / 4
long 1 / 2
half 0 / 0 (n/a)
float 1 / 4
double 0 / 0 (n/a)
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 (n/a)
Address bits 64, Little-Endian
Global memory size 16595570688 (15.46GiB)
Error Correction support No
Max memory allocation 4148892672 (3.864GiB)
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 524288 (512KiB)
Global Memory cache line size 64 bytes
Image support Yes
Max number of samplers per kernel 480
Max size for 1D images from buffer 259305792 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 43690
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_byte_addressable_store cl_khr_depth_images cl_khr_3d_image_writes cl_intel_exec_by_local_thread cl_khr_spir cl_khr_image2d_from_buffer cl_intel_vec_len_hint

NULL platform behavior
clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...) Intel(R) CPU Runtime for OpenCL(TM) Applications
clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...) Success [INTEL]
clCreateContext(NULL, ...) [default] <checkNullCtx:3402: 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 2.2.12
ICD loader Profile OpenCL 2.2

And it basically crashed, because I had to kill the command. I attached the system requirements I am referring to down below. My main question is whether there is a support for rocky 8 ?

Re:Clinfo support for Rocky 8 linux

cw_intel — Wed, 12 Jul 2023 02:13:49 GMT

Hi，

Sorry to say that rocky 8 is not supported in OpenCL CPU RT.

Thanks

Re: Clinfo support for Rocky 8 linux

Edvinas3113 — Wed, 12 Jul 2023 09:23:35 GMT

Are there any plans to support it in the nearest future?

Re:Clinfo support for Rocky 8 linux

cw_intel — Thu, 13 Jul 2023 03:51:42 GMT

Hi,

Sorry for the wrong information. I checked with our related team again, Rocky8 should work.

Checked your the output of "clinfo", the version you used is a bit old (Driver Version 18.1.0.0920). And the latest version is 2023.15.3.0.20_160000. Can you install the latest version and check if it can work successfully on your machine?

Please take one of the following methods to install the latest Intel CPU Runtime for OpenCL™ Applications.

Download and install Intel® oneAPI Base Toolkit which includes the OpenCL CPU Runtime (https://www.intel.com/content/www/us/en/developer/tools/oneapi/base-toolkit-download.html). Please Note: if you finish the installation and run clinfo, but clinfo can not work successfully, you can use command "source /opt/intel/oneapi/setvars.sh" to setup the oneapi environment, then run 'clinfo' command.

Or you can install a standalone package for Intel OpenCL CPU Runtime. Please follow the instructions on Install Using Package Managers(https://www.intel.com/content/www/us/en/docs/oneapi/installation-guide-linux/2023-0/install-using-package-managers.html#GUID-4260DDA2-66FD-4D78-A272-23E49F5E1E24) to setup repository and install the package "intel-oneapi-runtime-opencl"

Please let me know if the latest version can work on your machine.

Thanks.

Re: Clinfo support for Rocky 8 linux

Edvinas3113 — Thu, 13 Jul 2023 15:34:46 GMT

Hu, it looks like we managed to make it work. Thanks!

Re:Clinfo support for Rocky 8 linux

cw_intel — Fri, 14 Jul 2023 09:15:31 GMT

Glad to know that you managed to make it work. As your issue is resolved we will no longer monitor this thread. Please post a new thread if you have any other issues.

Thanks.

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