Part 8 : Optimisation of a reduction

8.1) What is a reduction ?
8.2) The classical approach
8.3) The vectorization of reduction
8.4) The vectorization of reduction with intrinsic functions
8.5) How to optimize more
8.6) How to create a reduction python module

You can find the associated presentation here.

Let's create a directory 4-Reduction in the directory ExampleOptimisation for this example :

$ mkdir 4-Reduction

Do not forget to complete the ExampleOptimisation/CMakeLists.txt file :

project(HPC_ASTERICS)
cmake_minimum_required(VERSION 3.0)

set(PYTHON_EXECUTABLE "python3" CACHE BOOL "Python program")

add_subdirectory(Performances)

include(runExample.cmake)
include(pythonCheck.cmake)

set(VECTOR_ALIGNEMENT 32)
add_definitions(-DVECTOR_ALIGNEMENT=${VECTOR_ALIGNEMENT})

add_subdirectory(0-CMakeHelloWorld)
add_subdirectory(AstericsHPC)
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/AstericsHPC)

add_subdirectory(1-HadamardProduct)

add_subdirectory(3-Saxpy)
add_subdirectory(4-Reduction)