Question

can any one explain me more on opencl ?

Answer 1

"OpenCL™ is the first open, royalty-free standard for cross-platform, parallel programming of modern processors found in personal computers, servers and handheld/embedded devices. OpenCL (Open Computing Language) greatly improves speed and responsiveness for a wide spectrum of applications in numerous market categories from gaming and entertainment to scientific and medical software."

The programming language used to write computation kernels is based on C99 with some limitations and additions. It omits the use of function pointers, recursion, bit fields, variable-length arrays, and standard C99 header files. The language is extended to easily use parallelism with vector types and operations, synchronization, functions to work with work-items/groups.

OpenCL was initially developed by Apple Inc.
OpenCL 1.0 has been released with Mac OS X Snow Leopard.

Hope this helps