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OpenCV and MPI (Open MPI)

I'm just wondering if anyone has any experience running OpenCV programs over multiple machines using MPI (Open MPI) and the MPI Libraries in C/C++.

Background:

I'm developing a project which detects and identifies all kinds of moving objects such as vehicles and pedestrians on 496 separate camera feeds, each at a resolution of 352x240, and 1 frame per second. This obviously requires a good amount of computing power, and this is being run on servers which do not have very powerful GPUs so that is out of the question. Instead I am going to attempt to run the program across multiple machines using MPI (or something else if anyone has any suggestions).