The matrix processor is an example of a typical 'regular' problem.
We require to compute a 2d Grid of values. All the elements from each Row are processed in a Row-by-Row calculation and similarly all elements from each Column are processed in a Column-by-Column calculation. Finally a result is computed from all of the Row and Column results. Each process is independent apart from the input data.
For the complete tutorial please refer to the documentation library under the section "Blueprint -> Example Projects".