nec_09mar2004_training_2

Seite Seite Vectorization examples ex. 1: v = s + v (cont.) Seite Chaining ex. 1: v = s + v (cont.) ex. 1: v = s + v (cont.) ex. 1: v = s + v ex. 2: v = v + v Seite ex. 3: v = v + s * v Seite ex. 3: v = v + s * v Seite ex. 4: s = s + v * v ex. 4: s = s + v * v (cont.) ex. 5: matrix multiply ex. s1: matrix multiply Levels of Parallelism Seite Basic Rules to achieve Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance: Concurrency Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance Basic Rules for Performance: Pointers Basic Rules for Performance vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks vectorization of if-blocks constant if boundary if ex. s1: matrix multiply IO optimization Basic Rules for Performance IO optimization Basic Rules for Performance Seite FORTRAN 90 !cdir FORTRAN 90 !cdir FORTRAN 90 !cdir FORTRAN 90 !cdir FORTRAN 90 !cdir Stride for 1d-Arrays Bank busy time measured Stride for 1d-Arrays Bank busy time measured Stride for 1d-Arrays FORTRAN 90 !cdir Stride for 1d-Arrays Bank busy time measured Seite loop interchange loop interchange loop expansion loop expansion loop expansion loop expansion loop expansion loop division loop expansion loop division loop division loop division call to function vectorization example vectorization example (2) vectorization example (3) vectorization example (4) Seite 2D recursion 2D recursion (2) Seite Seite Basic Rules for Performance Seite