��1. About Intel� SDK for OpenCL* - CPU Only Runtime Package.



Intel� SDK for OpenCL* - CPU Only Runtime Package is an implementation of the OpenCL 1.2 standard optimized for Intel processors, running on Microsoft Windows* operating systems. 



2. Technical Requirements



Intel� SDK for OpenCL* - CPU Only Runtime Package requires support for the Intel� Streaming SIMD Extensions 4.2 (Intel� SSE 4.2) or higher (Intel Intel� Advanced Vector Extensions (Intel� AVX)). SDK works on the following CPUs, all of which contain support for the required instruction set extensions:



Mobile and Desktop Products:

- third Generation Intel� Core"! i7 Extreme Processors 

- third Generation Intel� Core"! i7 Processors

- third Generation Intel� Core"! i5 Processors

- third Generation Intel� Core"! i3 Processors

- second Generation Intel� Core"! i7 Extreme Processors 

- second Generation Intel� Core"! i7 Processors

- second Generation Intel� Core"! i5 Processors

- second Generation Intel� Core"! i3 Processors

- first Generation Intel� Core"! i7 Extreme Processors 

- first Generation Intel� Core"! i7 Processors

- first Generation Intel� Core"! i5 Processors

- first Generation Intel� Core"! i3 Processors 



Server Products:

- Intel� Xeon� Processors E7 Family

- Intel� Xeon� Processors E5 Family

- Intel� Xeon� Processors E3 Family

- Intel� Xeon� Processors, 7500, 7400, 6500 series 

- Intel� Xeon� Processors, 5500 series 

- Quad-Core Intel� Xeon� Processor 5400, 3300 series 

- Dual-Core Intel� Xeon� Processor, 5200, 3100 series



Intel� SDK for OpenCL* - CPU Only Runtime Package supports the following operating systems: 

- Microsoft Windows 7* (32-bit version)

- Microsoft Windows 7* (64-bit version)

- Microsoft Windows 7* Service Pack 1 (32-bit version)

- Microsoft Windows 7* Service Pack 1 (64-bit version) 

- Microsoft Windows Vista* Service Pack 2 (32-bit version)

- Microsoft Windows Vista* Service Pack 2 (64-bit version)

- Microsoft Windows 8* Release Preview OS 32-bit and 64-bit versions



Use Microsoft Windows 7* operating systems with Service Pack 1 to achieve better performance on 2nd Generation Intel� Core"! processors.



3. Supported features



3.1 Conformant with OpenCL 1.2 specification for the CPU, and with Microsoft Windows 7* operating systems.



3.2 Optional OpenCL 1.2 Standard Features

- Out-of-order execution model as defined in the OpenCL specification (CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE property of a command queue).

- Execution of native kernels as defined in the specification (CL_EXEC_NATIVE_KERNEL option of the CL_DEVICE_EXECUTION_CAPABILITIES property of device information).

- Image support with the minimum set of image formats, as defined in the specification (CL_DEVICE_IMAGE_SUPPORT property of device information).

- Optimization options: Intel� OpenCL SDK supports the OpenCL standard compiler flag -cl-fast-relaxed-math. Some optimizations may violate the IEEE 754 standard and the OpenCL numerical compliance. For a full list of optimized functions see Working with the cl-fast-relaxed-math Optimization Flag.

- Math intrinsic option: supports standard optional compiler flag -cl-denorms-are-zero.



3.3 OpenCL 1.2 Conformant Extensions

- cl_khr_icd - defines a simple mechanism through which the Khronos installable client driver loader (ICD Loader) may expose multiple separate vendor installable client drivers (Vendor ICDs) for OpenCL

- cl_khr_fp64 - double precision floating point support, as defined in the specification.

- cl_khr_gl_sharing - creating OpenCL context from an OpenGL* context or share group, as defined in the specification. This extension is supported on Microsoft Windows* operating systems only.

- cl_khr_gl_sharing - sharing memory objects with OpenGL* or OpenGL* ES buffers, texture and render bugger objects, as defined in the specification. 

- 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_dx9_media_sharing

- cl_khr_d3d11_sharing



3.4 OpenCL cl_ext Extensions

- Intel Device Fission Extension Support (cl_ext_device_fission)



3.5 Intel Vendor Extensions

- Intel Immediate Command Execution Extension (cl_intel_exec_by_local_thread)

- Intel DirectX* 9 Media Sharing Extension (cl_intel_dx9_media_sharing)



For specifications of Khronos and vendor-approved OpenCL extensions please visit the Khronos OpenCL API Registry (http://www.khronos.org/registry/cl/)



Intel� SDK for OpenCL* Applications is available for downloading through Intel� Software Network (http://software.intel.com/en-us/articles/vcsource-tools-opencl-sdk/)



* OpenCL and the OpenCL logo are trademarks of Apple Inc. used by permission by Khronos.

Copyright � 2012-2013 Intel Corporation. All rights reserved.