Benedict R. Gaster, AMD Architect, OpenCL
AMD just published its public OpenCL Beta for the CPU, soon to be followed with support for AMD’s latest GPUs. OpenCL is a young technology, and, while a specification has been published (www.khronos.org/registry/cl/ ), there are currently few documents that provide a basic introduction with examples. This article helps make OpenCL easier to understand and implement.
Note that:
- I work at AMD, and, as such, I will test all example code on our implementation for both Windows® and Linux®; however, my intention is to illustrate the use of OpenCL regardless of platform. All examples are written in pure OpenCL and should run equally well on any implementation.
-
I have done my best to provide examples that work out-of-the-box on non-AMD implementations of OpenCL, but I will not be testing them on non-AMD implementations; therefore, it is possible that an example might not work as expected on such systems. If this is the case, please let me know via our Stream Computing forum, and I will do my best to rectify the code and publish an update.
The following “Hello World” tutorial provides a simple introduction to OpenCL. I hope to follow up this first tutorial with additional ones covering topics such as:
- Using platform and device layers to build robust OpenCL
- Program compilation and kernel objects
- Managing buffers
- Kernel execution
- Kernel programming - basics
- Kernel programming - synchronization
- Matrix multiply - a case study
- Kernel programming - built-ins
詳情可訪問：http://developer.amd.com/gpu/ATIStreamSDK/pages/TutorialOpenCL.aspx
