For the exact terms, read the license.txt included in the download. While Intel has moved most OpenCL development into the oneAPI ecosystem, the legacy 16.1.1 runtime remains a critical dependency for many production applications. If you need this exact version, your best sources are Intel’s archived downloads (via Intel Premier Support or legacy download center) or trusted redistributors. For most users, installing the Intel oneAPI Base Toolkit (which includes a modern, backward-compatible OpenCL CPU runtime) is the safest and most straightforward path forward.
# On Linux export OCL_ICD_VENDORS=/etc/OpenCL/vendors/intel.icd # On Windows, ensure Intel ICD is listed in registry at HKLM\SOFTWARE\Khronos\OpenCL\Vendors Solution: Install the OpenCL ICD loader: For the exact terms, read the license
sudo apt install ocl-icd-libopencl1 Solution: Fall back to OpenCL 1.2 mode. Set environment variable: For most users, installing the Intel oneAPI Base
| Processor Family | Minimum Generation | |----------------|--------------------| | Intel Core i3/i5/i7/i9 | 4th Gen (Haswell) | | Intel Xeon E3/E5/E7 | v3 (Haswell-EP) | | Intel Xeon Scalable | 1st Gen (Skylake-SP) | | Intel Xeon D | 1500 series+ | For Intel Core and Intel Xeon processors, the
Introduction OpenCL (Open Computing Language) is a framework for writing programs that execute across heterogeneous platforms, including CPUs, GPUs, and FPGAs. For Intel Core and Intel Xeon processors, the Intel® CPU Runtime for OpenCL™ Applications provides the necessary libraries and drivers to enable OpenCL 2.0, 2.1, and 3.0 features on the CPU itself.