1.AMD opencl-optimization-guide
http://developer.amd.com/tools-and-sdks/opencl-zone/amd-accelerated-parallel-processing-app-sdk/opencl-optimization-guide/#50401315_pgfId-520800
2.apple 的OpenCL_MacProgGuide
https://developer.apple.com/library/mac/documentation/Performance/Conceptual/OpenCL_MacProgGuide/TuningPerformanceOntheGPU/TuningPerformanceOntheGPU.html#//apple_ref/doc/uid/TP40008312-CH22-SW6
3.opencl overview
4. opencl 1.2 API
https://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/
5.OpenCL_Programming_Overview
http://wenku.baidu.com/link?url=0ZtQPjBQqXSjyRRp1dqDC3zkDBnGTAanEJ7KeG_PJzZIxaMYKmeWSCylr_h03GK0ssdPafeTAXTcxDGmOw4Of-mobT3C_WPqZew5GzOOls_
6.nvidia_opencl_best practices guide
www.nvidia.com/content/cudazone/cudabrowser/downloads/papers/nvidia_opencl_bestpracticesguide.pdf