Intel® CPU Runtime for OpenCL™ Applications Release Notes

ID 762850
Updated 9/26/2022
Version 2022



This page provides the current Release Notes for Intel® CPU Runtime for OpenCL™ Applications for Intel® Core™ and Intel® Xeon® processors. This page covers the CPU (x86-64) OpenCL™ implementation only. See the OpenCL™ Runtimes for Intel® Processors article for additional Intel® Graphics Technology information. The notes are categorized by year, from newest to oldest, with individual releases listed within each year.

Click a version to expand it into a summary of new features and changes in that version since the last release, and access the download buttons for the detailed release notes, which include important information, such as pre-requisites, software compatibility, installation instructions, and known issues.

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For OpenCL™ developer tools, visit the Intel® SDK for OpenCL™ Applications 2019 page.
For questions or technical support, visit Intel® Software Developer Support.



Release Notes


  • Add device attribute query extension “cl_intel_device_attribute_query”.  This extension can be used to query additional information about Intel OpenCL devices. The additional information may be useful to tailor a specific workload to the properties of the device. User can query the following information for CPU device:   

               CL_DEVICE_NUM_SLICES_INTEL:  Number of NUMA nodes of the device.

                    For root device, it's the total number of NUMA nodes on the machine.

                     If sub-devices are partitioned with CL_DEV_PARTITION_AFFINITY_NUMA, it should be 1.

               CL_DEVICE_NUM_SUB_SLICES_PER_SLICE_INTEL:   return 1

               CL_DEVICE_NUM_EUS_PER_SUB_SLICE_INTEL: Number of physical cores on each NUMA node.

               CL_DEVICE_NUM_THREADS_PER_EU_INTEL:  Number of threads per core.

  • Prompt the user-friendly error message when TBB libraries are not loaded correctly.
  • OpenCL ICD loader is uplifted and “OCL_ICD_ENABLE_TRACE” environment variable is enabled. When set OCL_ICD_ENABLE_TRACE=1 or true, detailed information of OpenCL ICD loader execution will be provided.


Release Notes 


  • Enable the automatic stack size allocation and allocation for kernel execution. This will reduce the possibility of out of resource error.
  • Minor bug fixings.


Release Notes 


  • Enlarge the default memory size to adapt user application better.
  • Minor bug fixings.

OS Deprecation Notice

These operating systems are deprecated in the Intel oneAPI 2022.1 release, and will be removed in a future release:

  • Windows Server 2016*
  • SUSE Linux Enterprise Server* 15 SP2

Known Issue

Intel® oneAPI Toolkits 2022.1.3 and earlier and Intel® Parallel Studio XE (any version) do not support Microsoft Visual Studio 2022. On systems with Microsoft Visual Studio 2022 installed, Intel® oneAPI and Intel® Parallel Studio XE installers may fail during installation, upgrade, modification, or uninstallation. Refer to this article for more information.

Previous Release Notes

Here is the link to the previous release notes