说明：  Altera的OpenCL主要面向信号处理类应用的客户，是用C语言开发FPGA的利器，开放计算语言(OpenCL)联盟著名的公司有FPGA巨头Altera、两大显卡GPU巨头AMD、英伟达、CPU巨头Intel、软件和服务器巨头IBM以及全世界最大的公司Apple（苹果）等等。不过AMD和英伟达是用GPU实现的OpenCL并行运算，Altera是用FPGA实现并行运算。
(Altera's OpenCL is mainly a client for signal processing applications, a tool for developing FPGA in the C language. The famous companies in the open computing language (OpenCL) alliance are FPGA giant Altera, two big card GPU tycoons AMD, Ying Weida, CPU giant Intel, software and server giants IBM, and the world's largest company (Apple) Wait. But AMD and Nvidia use GPU to implement OpenCL parallel computing, while Altera uses FPGA to implement parallel computing.)