Optimization_4x4_3

Copy the contents of file MMult2.c into a file named MMult_4x4_3.c and change the contents:

|| from || to || ||<^> -Include(HowToOptimizeGemm/Details/MMult2)- ||<^> -Include(HowToOptimizeGemm/Details/MMult_4x4_3)- ||

Change the first lines in the makefile to {{{ OLD := MMult2 NEW := MMult_4x4_3 # Notice the two underscores!! }}}

• make run {{{ octave:3> PlotAll % this will create the plot }}}

This time the performance graph will look something like

ImageLink(http://www.cs.utexas.edu/users/rvdg/HowToOptimizeGemm/Graphs/compare_MMult2_MMult-4x4-3.png,http://www.cs.utexas.edu/users/rvdg/HowToOptimizeGemm/Graphs/compare_MMult2_MMult-4x4-3.png,width=40%) ImageLink(http://www.cs.utexas.edu/users/rvdg/HowToOptimizeGemm/Graphs/compare_MMult-1x4-3_MMult-4x4-3.png,http://www.cs.utexas.edu/users/rvdg/HowToOptimizeGemm/Graphs/compare_MMult-1x4-3_MMult-4x4-3.png,width=40%)

No performance benefit, yet.