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Data organisation by domain knowledge 05/01/2012:09:24:17

Structures of arrays is better than arrays of structures, but sometimes, if you're accessing the arrays in a sparse manner, keeping the data you would need together is even better. Thus you end up with a structure of arrays of structures.

This can be found by profiling, but sometimes domain knowledge can leverage the most optimal solutions. In this example by Julien Hamaide he finds locality patterns based on the transforms that will be run on his data through profiling and through knowledge of the data relationships.

http://altdevblogaday.com/2011/03/04/particle-system-memory-patterns/