Multiplication tables and fine headgear
"Divide and conquer" (or "divide et impera") is an age old saying used by Florentine philosopher Niccolo Machiavelli (1469-1527). While we were unfortunately but a few generations late to hear him speak these words, we commend him on setting a fine example for the future of fashion in the late 1400’s.
Put simply, using distributed rendering we can call on the power of multiple processors to generate a single image in much less time that before! The now famous cow theory involved using multiple processors to share the load over the creation of animations, but that involved each processor being dedicated to a single image. Distributed rendering over a single image means that each image can be broken down into a series of segments that are generated by multiple processors. Going one step even further, the processors that we use can be split into two pseudo-processors of their own, giving us a nice exponential growth to the number of processors that we have available at any one time. With dual physical processors this means we actually have four pseudo processors at our disposal! Could this explanation get any more convoluted?
You could think of it as lots of mice eating one piece of cheese, with each mouse having two heads, but that wouldn’t help to explain this concept any clearer and would probably confuse you even more than necessary. Instead, if you look at the image below this paragraph you can see how the single image is broken down into little individual boxes. Each box is then assigned to a processor – thus the whole image is generated by as many processors as we can throw at it!
For the tech-buffs out there, this image took 2min 47secs on a P4 3.0Ghz box alone, and 1min 3secs with the assistance of a dual Xeon 2.8Ghz machine over the network.
Machiavelli you genius!
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