slides day-3 added

course/Day-3/presentation.cfg

course/Day-3/presentation.html

course/slides/images/achter.jpg

course/slides/images/ahmdal-slide.png

course/slides/images/blue_gene_p.jpg

course/slides/images/domain_decomposition.png

course/slides/images/mem_hierarchy.png

course/slides/images/memory_and_simd.png

course/slides/images/multi-verse.png

course/slides/images/simd.png

course/slides/images/singlecore_performance.png