Is it possible to run the sum computation in parallel in OpenCL?

Is it possible to run the sum computation in parallel in OpenCL?

References

Reference NO 1

http://stackoverflow.com/questions/15200159/is-it-possible-to-run-the-sum-computation-in-parallel-in-opencl

Reference NO 2

http://stackoverflow.com/questions/13970020/possible-to-use-opencl-on-multi-computers

Reference NO 3

http://www.pgroup.com/lit/articles/insider/v5n1a4.htm

Reference NO 4

http://developer.amd.com/resources/documentation-articles/articles-whitepapers/opencl-optimization-case-study-simple-reductions/

Reference NO 5

http://www.cmsoft.com.br/index.php?option=com_content&view=category&layout=blog&id=59&Itemid=106

Reference NO 6

http://www.mql5.com/en/articles/405

Reference NO 7

https://developer.nvidia.com/opencl

Reference NO 8

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