Decomposition.md

 Every structure should divide the information that they store across processors, in order to do this two main approach are considered inside OpenFPM.
 
 * Model decomposition
-* Data driven decomposition
 * Fixed decomposition
+* Data driven decomposition
+
+
+The fist approach try to create a model for computation and comunication and try to find a decomposition that minimize it.
 
-The fist approach try to create a model for the interactions across processors and try to minimize the space
+The second just divide the domain as the user specified and assign 1 sub-domain to each processor
 
-The second instead try to divide the quantity of information the structure store without considering the interactions
+The third is the default decomposition when a decomposition is not available yet, it basically divide
+the data consistently across processors regardless of geometrical meaning or communication
 
 ## Model decomposition